U.S. patent application number 15/920204 was filed with the patent office on 2018-09-20 for drip edge.
The applicant listed for this patent is James Hardie Technology Limited. Invention is credited to Thayne Dye, Jeremy Gearheart.
Application Number | 20180266115 15/920204 |
Document ID | / |
Family ID | 63521093 |
Filed Date | 2018-09-20 |
United States Patent
Application |
20180266115 |
Kind Code |
A1 |
Dye; Thayne ; et
al. |
September 20, 2018 |
DRIP EDGE
Abstract
A structurally robust roof drip edge system including a tail and
an outer section contiguous with the tail. The tail includes a
locally thin section nailable to a roof substrate. The outer
section includes a bridging member connecting an inner footing and
an outer footing. The outer footing includes a drip edge profile
for directing the flow of water off of a roof. The inner footing is
spaced from the outer footing by a suitable distance and configured
to be placed against an eave as a positioning aid such that the
drip edge can easily and reliably be installed with sufficient
spacing for the installation of a fascia board behind the drip edge
profile. The drip edge may be bendable to a user-selectable angle
between the tail and the outer section to accommodate a range of
roof pitches.
Inventors: |
Dye; Thayne; (Upland,
CA) ; Gearheart; Jeremy; (Thompson's Station,
TN) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
James Hardie Technology Limited |
Dublin 2 |
|
IE |
|
|
Family ID: |
63521093 |
Appl. No.: |
15/920204 |
Filed: |
March 13, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62471255 |
Mar 14, 2017 |
|
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
E04D 13/0459 20130101;
E04D 2013/0468 20130101 |
International
Class: |
E04D 13/04 20060101
E04D013/04 |
Claims
1. A drip edge configured to be installed to a substantially planar
roof substrate comprising an upper surface and a side-facing
surface, the drip edge comprising: a tail extending along the
length of the drip edge, the tail comprising a lower end and an
upper end thinner than the lower end, wherein the drip edge is
coupleable to the upper surface of the roof substrate by driving
one or more mechanical fasteners through the upper end of the tail
such that the tail lies adjacent to the upper surface of the roof
substrate; and an outer section contiguous with the tail at a
lengthwise joint defining a roof angle corresponding to a roof
pitch of the roof substrate, the outer section extending along the
length of the drip edge and comprising an inner footing disposed
proximal to the tail section, an outer footing disposed distal from
the tail section, and a bridging member disposed between the inner
footing and the outer footing such that the inner footing and the
outer footing extend perpendicularly from a bottom side of the
bridging member to form downward-facing c-shaped channel, wherein
the joint comprises a bendably thin region disposed proximate the
inner footing and the tail such that the roof angle is selectable
by bending the tail relative to the bridging member along the
bendably thin region, and wherein an inner surface of the inner
footing lies adjacent to the side-facing surface of the roof
substrate, wherein the c-shaped channel is sized and shaped to
accommodate installation of a fascia board having a substantially
rectangular cross-section disposed at least partially within the
c-shaped channel and fastened to the side-facing surface of the
roof substrate, and wherein the tail is configured to accommodate
installation of a roofing material coupled to the upper surface of
the roof substrate wherein at least a portion of the roofing
material lies adjacent to the upper surface and at least a portion
of the roofing material lies adjacent to the tail of the drip edge
such that at least a portion of the tail of the drip edge is
disposed between the upper surface of the roof substrate and an
underside of the roofing material.
2. The drip edge of claim 1, wherein the outer footing of the drip
edge comprises a top end contiguous with the bridging member and a
bottom end opposite the top end, the bottom end comprising a lip
extending outwardly at an angle of between 15 degrees and 60
degrees relative to the outer footing such that a liquid flowing
downward along the outer footing is directed away from the fascia
board.
3. The drip edge of claim 1, wherein the drip edge comprises a
plurality of adjacent discrete drip edge sections having
substantially identical cross sections, the drip edge sections
disposed adjacently to form a drip edge extending along
substantially the entire length of roof substrate.
4. The drip edge of claim 1, wherein the c-shaped channel has a
width of between 0.75 inch and 1 inch.
5. A universal drip edge comprising: a tail extending along the
length of the drip edge, the tail comprising a lower end and an
upper end thinner than the lower end; and an outer section
contiguous with the tail at a lengthwise joint defining a roof
angle, the outer section extending along the length of the drip
edge and comprising: an inner footing disposed proximal to the tail
section; an outer footing disposed distal from the tail section;
and a bridging member disposed between the inner footing and the
outer footing such that the inner footing and the outer footing
extend perpendicularly from a bottom side of the bridging member;
wherein the joint comprises a bendably thin region disposed
proximate the inner footing and the tail, wherein the roof angle is
selectable by bending the tail relative to the bridging member
along the bendably thin region; wherein the inner footing comprises
an inner surface proximate the tail, the inner surface configured
to be placed against an end surface of a roof substrate to define a
drip edge installation position; and wherein the bridging member,
the inner footing, and the outer footing define a downward-facing
channel configured to receive and partially surround a fascia
board.
6. The drip edge of claim 1, wherein the bridging member is
oriented at an angle between 5 degrees and 30 degrees relative to
the tail section.
7. The drip edge of claim 1, wherein the bendably thin region
comprises a lengthwise divot in a bottom surface of the joint.
8. The drip edge of claim 1, wherein the upper end of the tail is
configured to receive one or more mechanical fasteners for securing
the drip edge to a roof substrate.
9. The drip edge of claim 1, wherein the outer footing comprises a
top end contiguous with the bridging member and a bottom end
opposite the top end, the bottom end comprising a lip disposed at
an angle relative to the outer footing.
10. The drip edge of claim 9, wherein the lip is disposed at an
angle between 15 degrees and 60 degrees relative to the outer
footing.
11. The drip edge of claim 9, wherein the bottom end terminates in
a fillet, wherein an outer portion of the fillet has a radius of
curvature larger than a radius of curvature of an inner portion of
the fillet.
12. The drip edge of claim 1, wherein the outer section and the
tail comprise aluminum.
13. The drip edge of claim 12, wherein the outer section and the
tail are manufactured by extruding to form an integral drip edge
system.
14. The drip edge of claim 1, wherein the outer footing is
configured to accommodate and direct a flow of water received from
a roof
15. The drip edge of claim 1, wherein the inner footing, the outer
footing, the bridging member, and the lower section of the tail
have a thickness between 1/32 inch and 1/8 inch.
16. A method of installing a drip edge on a roof substrate, the
method comprising: providing a drip edge comprising a tail and an
outer section having an inner footing, an outer footing, and a
channel disposed between the inner footing and the outer footing;
placing the drip edge against the roof substrate such that a bottom
surface of the tail is adjacent and substantially parallel to an
upper surface of the roof substrate and an inward-facing surface of
the inner footing abuts a side-facing surface of the roof
substrate; attaching the tail to the roof substrate by placing one
or more mechanical fasteners through the tail and a portion of the
roof substrate; and installing a fascia board within the
channel.
17. The method of claim 16, wherein the tail and the outer section
of the drip edge are contiguous at a joint having an angle
adjustable by bending.
18. The method of claim 17, further comprising determining a pitch
of the roof substrate, and adjusting the angle of the joint based
on the measured pitch before placing the drip edge against the roof
substrate.
19. The method of claim 16, wherein the roof substrate comprises a
roof sheathing.
20. The method of claim 16, wherein attaching the tail to the roof
substrate comprises driving one or more nails through the tail and
a portion of the roof substrate.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims the benefit of U.S. Provisional
Application Ser. No. 62/471,255, filed Mar. 14, 2017, entitled
"DRIP EDGE," which is hereby incorporated by reference in its
entirety and for all purposes.
BACKGROUND
Field
[0002] The present disclosure generally relates to weather
resistant barrier systems, and more specifically to drip edge
systems and methods.
Description of the Related Art
[0003] A drip edge can be installed at roof edges to guide water
runoff away from fascia boards along roof linings and/or otherwise
improve water management properties of the roof. The drip edge is
typically a sheet of elongate metal bent across its length. The
upper portion of the drip edge is inserted under the first course
of roof shingles and attached to the roof while the lower portion
extends downwardly from the edge of the roof to protect the fascia
from roof runoff Because the fascia boards are often installed
after roofing is completed, drip edges are sometimes positioned too
close to the eaves without leaving sufficient space for the fascia
board to be installed behind the drip edge. The effectiveness of a
drip edge may also be affected by the pitch of the roof. Drip edges
designed for flat roofs do not function properly when installed on
a high pitch roof and vice versa.
SUMMARY
[0004] The systems, methods, and devices described herein address
one or more problems as described above and associated with current
runoff water management systems. The systems, methods and devices
described herein have innovative aspects, no single one of which is
indispensable or solely responsible for their desirable attributes.
Without limiting the scope of the claims, the summary below
describes some of the advantageous features.
[0005] The present disclosure provides various embodiments of a
universal drip edge that can be effectively installed and used to
protect fascia boards from roof water runoff regardless of the roof
pitch. The present disclosure also provides various embodiments of
a drip edge that can be reliably installed on roofs with sufficient
room for a fascia board despite being installed before the fascia
is attached. The present disclosure also provides various
embodiments of a drip edge configured to facilitate water
coalescing so that scattering or splashing of roof runoff is
significantly reduced. In some embodiments, the drip edge has a
varying thickness configured to add stability and strength while
improving the ease of installation. Enhanced strength may provide a
more robust product for shipping, installation, and long-term
performance following installation.
[0006] In one embodiment, a drip edge is described. The drip edge
is configured to be installed to a substantially planar roof
substrate comprising an upper surface and a side-facing surface.
The drip edge includes a tail extending along the length of the
drip edge, the tail comprising a lower end and an upper end thinner
than the lower end, wherein the drip edge is coupleable to the
upper surface of the roof substrate by driving one or more
mechanical fasteners through the upper end of the tail such that
the tail lies adjacent to the upper surface of the roof substrate;
and an outer section contiguous with the tail at a lengthwise joint
defining a roof angle corresponding to a roof pitch of the roof
substrate, the outer section extending along the length of the drip
edge and comprising an inner footing disposed proximal to the tail
section, an outer footing disposed distal from the tail section,
and a bridging member disposed between the inner footing and the
outer footing such that the inner footing and the outer footing
extend perpendicularly from a bottom side of the bridging member to
form downward-facing c-shaped channel, wherein the joint comprises
a bendably thin region disposed proximate the inner footing and the
tail such that the roof angle is selectable by bending the tail
relative to the bridging member along the bendably thin region, and
wherein an inner surface of the inner footing lies adjacent to the
side-facing surface of the roof substrate. The c-shaped channel is
sized and shaped to accommodate installation of a fascia board
having a substantially rectangular cross-section disposed at least
partially within the c-shaped channel and fastened to the
side-facing surface of the roof substrate. The tail is configured
to accommodate installation of a roofing material coupled to the
upper surface of the roof substrate wherein at least a portion of
the roofing material lies adjacent to the upper surface and at
least a portion of the roofing material lies adjacent to the tail
of the drip edge such that at least a portion of the tail of the
drip edge is disposed between the upper surface of the roof
substrate and an underside of the roofing material.
[0007] In some embodiments, the outer footing of the drip edge
comprises a top end contiguous with the bridging member and a
bottom end opposite the top end, the bottom end comprising a lip
extending outwardly at an angle of between 15 degrees and 60
degrees relative to the outer footing such that a liquid flowing
downward along the outer footing is directed away from the fascia
board.
[0008] In some embodiments, the drip edge includes a plurality of
adjacent discrete drip edge sections having substantially identical
cross sections, the drip edge sections disposed adjacently to form
a drip edge extending along substantially the entire length of roof
substrate.
[0009] In some embodiments, the c-shaped channel has a width of
between 0.75 inch and 1 inch.
[0010] In another embodiment, a universal drip edge is described.
The drip edge includes an outer section and a variable thickness
tail section, both extending along the length of the drip edge. The
upper end of the tail section is thinner than the lower end. The
outer section is contiguous with the tail at a lengthwise joint
defining a roof angle. The outer section comprises an inner footing
disposed proximal to the tail section, an outer footing disposed
distal from the tail section, and a bridging member disposed
between the inner footing and the outer footing such that the inner
footing and the outer footing extend perpendicularly from a bottom
side of the bridging member. The joint comprises a bendably thin
region disposed proximate the inner footing and the tail, wherein
the roof angle is selectable by bending the tail relative to the
bridging member along the bendably thin region. The inner footing
comprises an inner surface proximate the tail, the inner surface
configured to be placed against an end surface of a roof substrate
to define a drip edge installation position. The bridging member,
the inner footing, and the outer footing define a downward-facing
channel configured to receive and partially surround a fascia
board.
[0011] In some embodiments, the bridging member is oriented at an
angle between 5 degrees and 30 degrees relative to the tail
section.
[0012] In some embodiments, the bendably thin region comprises a
lengthwise divot in a bottom surface of the joint.
[0013] In some embodiments, the upper end of the tail is configured
to receive one or more mechanical fasteners for securing the drip
edge to a roof substrate.
[0014] In some embodiments, the outer footing comprises a top end
contiguous with the bridging member and a bottom end opposite the
top end, the bottom end comprising a lip disposed at an angle
relative to the outer footing.
[0015] In some embodiments, the lip is disposed at an angle between
15 degrees and 60 degrees relative to the outer footing.
[0016] In some embodiments, the bottom end terminates in a fillet,
wherein an outer portion of the fillet has a radius of curvature
larger than a radius of curvature of an inner portion of the
fillet.
[0017] In some embodiments, the outer section and the tail comprise
aluminum.
[0018] In some embodiments, the outer section and the tail are
manufactured by extruding to form an integral drip edge system.
[0019] In some embodiments, the outer footing is configured to
accommodate and direct a flow of water received from a roof.
[0020] In some embodiments, the inner footing, the outer footing,
the bridging member, and the lower section of the tail have a
thickness between 1/3 inch and 1/8 inch.
[0021] In another embodiment, a method of installing a drip edge on
a roof substrate is described. The method includes providing a drip
edge comprising a tail and an outer section having an inner
footing, an outer footing, and a channel disposed between the inner
footing and the outer footing, placing the drip edge against the
roof substrate such that a bottom surface of the tail is adjacent
and substantially parallel to an upper surface of the roof
substrate and an inward-facing surface of the inner footing abuts a
side-facing surface of the roof substrate, attaching the tail to
the roof substrate by placing one or more mechanical fasteners
through the tail and a portion of the roof substrate, and
installing a fascia board within the channel.
[0022] In some embodiments, the tail and the outer section of the
drip edge are contiguous at a joint having an angle adjustable by
bending.
[0023] In some embodiments, the method further comprises
determining a pitch of the roof substrate, and adjusting the angle
of the joint based on the measured pitch before placing the drip
edge against the roof substrate.
[0024] In some embodiments, the roof substrate comprises a roof
sheathing.
[0025] In some embodiments, attaching the tail to the roof
substrate comprises driving one or more nails through the tail and
a portion of the roof substrate.
BRIEF DESCRIPTION OF THE DRAWINGS
[0026] Certain embodiments of the present disclosure will now be
described, by way of example only, with reference to the
accompanying drawings. From figure to figure, the same or similar
reference numerals are used to designate similar components of an
illustrated embodiment.
[0027] FIG. 1A is an isometric perspective view of a roof drip edge
in accordance with an example embodiment.
[0028] FIG. 1B is a top view of the roof drip edge of FIG. 1A.
[0029] FIG. 1C is a bottom view of the roof drip edge of FIGS. 1A
and 1B.
[0030] FIG. 1D is a side profile view of the roof drip edge of
FIGS. 1A-1C.
[0031] FIG. 2A is an isometric perspective view of an example
configuration of the roof drip edge depicted in FIGS. 1A-1D
installed on a roof sheathing.
[0032] FIG. 2B is a side profile view of the installed
configuration of FIG. 2A.
[0033] FIG. 2C is an isometric perspective view of the installed
roof drip edge of FIGS. 2A and 2B after installation of roofing
materials and a fascia.
[0034] FIG. 2D is a side profile view of the installed
configuration of FIG. 2C.
[0035] FIG. 3A is an isometric perspective view of a roof drip edge
in accordance with a second example embodiment.
[0036] FIG. 3B is a side profile view of the roof drip edge of FIG.
3A.
[0037] FIG. 4A is an isometric perspective view of a roof drip edge
in accordance with a third example embodiment.
[0038] FIG. 4B is a side profile view of the roof drip edge of FIG.
4A.
[0039] FIG. 5A is an isometric perspective view of a roof drip edge
in accordance with a fourth example embodiment.
[0040] FIG. 5B is a side profile view of the roof drip edge of FIG.
5A.
[0041] FIG. 6A is an isometric perspective view of a roof drip edge
in accordance with a fifth example embodiment.
[0042] FIG. 6B is a side profile view of the roof drip edge of FIG.
6A.
[0043] FIG. 7A is an isometric perspective view of a roof drip edge
in accordance with a sixth example embodiment.
[0044] FIG. 7B is a side profile view of the roof drip edge of FIG.
7A.
[0045] FIG. 8A is an isometric perspective view of a roof drip edge
in accordance with a seventh example embodiment.
[0046] FIG. 8B is a side profile view of the roof drip edge of FIG.
8A.
[0047] FIG. 9 is a side profile view of a roof drip edge in
accordance with a further example embodiment.
DETAILED DESCRIPTION
[0048] Although the present disclosure is described with reference
to specific examples, it will be appreciated by those skilled in
the art that the present disclosure may be embodied in many other
forms. The embodiments discussed herein are merely illustrative and
do not limit the scope of the present disclosure.
[0049] In the description which follows, like parts may be marked
throughout the specification and drawings with the same or similar
reference numerals. The drawing figures are not necessarily to
scale and certain features may be shown exaggerated in scale or in
somewhat generalized or schematic form in the interest of clarity
and conciseness.
[0050] Generally described, this disclosure describes improved roof
drip edges providing a variety of possible advantages over existing
flashing systems. As will be described with reference to the
figures, in some embodiments the drip edges described herein are
advantageously configured to be installed by roofers so as to
reliably provide sufficient space for a fascia board to be attached
to the eave by a cladding installer. In certain aspects, the drip
edges described herein may be structurally robust while being
nailable to a roof sheathing or other building substrate. In a
further advantage, some embodiments may be configured to be
bendable at one or more bending locations and/or along one or more
bending axes, such that identically manufactured drip edges may be
customizable by an installer for use with roofs having different
pitches. These and other advantages of various embodiments will be
apparent from the description that follows.
[0051] FIGS. 1A-1D depict an example configuration of a drip edge
100 or section thereof in accordance with an example embodiment.
The drip edge 100 includes an inner tail 110 and an outer section
120. The tail 110 includes a lower section 112 and an upper section
114 relatively thinner than the lower section 112, divided from the
lower section 112 at an interface 116. The outer section 120
includes a c-shaped channel 122, defined generally by an inner
footing 124, an outer footing 126, and a bridging member 128
disposed between the inner and outer footings 124, 126. The tail
110 is contiguous with the outer section 120 at an angled joint
130.
[0052] The drip edge 100 can comprise a metal, for example,
aluminum, steel, or other suitable metal. The drip edge 100 can be
formed in the profile depicted in FIG. 1D by any suitable metal
working method, for example, extruding, rolling, bending, molding,
or the like. In some embodiments, the drip edge 100 is made of
extruded aluminum. Structural strength may be provided by using a
relatively thick metal, for example, as compared to the thickness
of conventional drip edge flashing. For example, the drip edge 100
depicted in FIGS. 1A-1D has a thickness of approximately 1/16''
(1.5875 mm) along the lower section 112 of the tail 110, and at the
outer section 120. In other embodiments, the thickness of the drip
edge 100 can be any suitable range, such as between 1/64'' and
1/8'' (between 0.396875 mm and 3.175 mm), between 1/32'' and 1/16''
(between 0.79375 mm and 1.5875 mm), or the like.
[0053] The drip edge 100 can be made in various sizes. For example,
the width a of the tail (e.g., the distance between the angled
joint 130 and a distal end of the tail 110) can be any suitable
distance such as 2 inches (5.08 cm), 3 inches (7.62 cm), or longer.
In another example, the length b of the drip edge 100 (e.g., the
length of the drip edge 100 along the angled joint 130) can be less
than 1 foot (less than 0.3048 m), 1 foot (0.3048 m), 2 feet (0.6096
m), 5 feet (1.524 m), 10 feet (3.048 m), or longer. In some
embodiments, the drip edge 100 can be manufactured in a first
length b which can be cut down to a shorter custom length by a drip
edge installer based on the length of a section of roof edge to be
covered. Where a relatively long roof edge is to be covered, a
plurality of sections of drip edge 100 can be placed end-to-end to
achieve a longer drip edge system. It will be appreciated that the
various functions and advantages of the drip edges described herein
can be achieved with relatively short and/or long drip edge
sections.
[0054] To facilitate nailing of the relatively thick drip edge 100
to a roof sheathing or other building substrate, the upper section
114 of the tail 110 is relatively thinner than the lower section
112. In various embodiments the thickness of the upper section 114
can be thinner than the lower section 112 by approximately 10%,
25%, 40%, 50%, 75%, or any other suitable percentage or range of
percentages, such as between 25% and 50%. For example, the upper
section 114 of the tail 110 of the drip edge 100 is approximately
0.04 inches (1.016 mm) thick, approximately 36% thinner than the
lower section 112. The thickness of the upper section 114 of the
tail can be selected so as to be thin enough to be easily securable
to a substrate by nails or other mechanical fasteners, and thick
enough to retain a desired structural rigidity. The width c of the
upper section 114 can be any suitable width. In some embodiments,
the width c of the upper section 114 is selected so as to provide a
sufficiently large thin area to receive one or more mechanical
fasteners, without significantly reducing the strength or
dimensional stability of the drip edge 100. For example, in some
embodiments, the width c of the upper section 114 is between 0.375
inches (9.525 mm) and 0.75 inches (19.05 mm). In one embodiment,
the width c of the upper section is approximately 0.44 inches
(11.176 mm).
[0055] The interface 116 between the upper section 114 and lower
section 112 of the tail 110 can be a stepwise transition between
the two metal thicknesses, or can be chamfered to provide a more
gradual transition between the thickness of the upper section 114
and the thickness of the lower section 112. In the example drip
edge 100 of FIG. 1D, the interface 116 is a stepwise transition.
The angle of the chamfer can be selected so as to prevent the
pooling of water behind the interface 116. For example, the chamfer
angle may be approximately equal to or greater than the angle of
the joint 130 such that the surface of the interface 116 is
downward-sloping when installed on an angled building surface.
[0056] The outer section 120 of the drip edge 110 is configured to
extend and carry draining water away from an edge of a roof
surface. The inner footing 124 extends downward from the bridging
member 128 to serve as a guide for placement of the drip edge 100
against an eave of a roof. In various embodiments, the length of
the inner footing 124 can be any suitable length such as between
0.1'' and 1'' (between 2.54 mm and 25.4 mm), between 0.1'' and
0.5'' (between 2.54 mm and 12.7 mm), or the like. For example, the
inner footing 124 of the drip edge 100 is approximately 0.25''
(6.35 mm). In some embodiments, the inner footing may be
substantially longer than 1'' (25.4 mm).
[0057] The outer footing 126 is longer than the inner footing so as
to guide draining water to a height substantially lower than the
top edge of a fascia board installed within the c-shaped channel
122. In various embodiments, the length of the outer footing 126
can be any suitable length such as between 0.5'' and 6'' (between
12.7 mm and 152.4 mm), between 1'' and 5'' (between 25.4 mm and 127
mm), or the like. For example, the outer footing 126 of the drip
edge 100 is approximately 1.25'' (31.75 mm).
[0058] At least a portion of the outer footing 126 can be an angled
section 127 or lip configured to further guide water away from the
roof edge. The angled section 127 is located at a distal end of the
outer footing 126 and disposed at an angle relative to the
vertically oriented proximal portion of the outer footing 126. In
various embodiments the angle can be between 15 and 60 degrees so
as to direct water away from the side of a building while
continuing to facilitate the downward flow of water along the outer
footing 126. For example, the angled portion 127 of the drip edge
100 depicted is angled at approximately 45 degrees relative to the
remainder of the outer footing 126.
[0059] In some embodiments, the end of the angled section 127 of
the outer footing 126 is further shaped so as to facilitate the
coalescence of water at the end of the drip edge 100. As shown in
FIG. 1D, the angled section 127 terminates in an upper fillet 127a
and a lower fillet 127b . The upper fillet 127a can have a larger
radius of curvature than the lower fillet 127b . For example, the
radius of curvature of the upper fillet 127a can be larger than the
radius of curvature of the lower fillet 127b by a factor of 1.25,
1.5, 2, 3, or greater.
[0060] Thus, the inner footing 124, outer footing 126, and bridging
member 128 define the c-shaped channel 122. The width d of the
c-shaped channel 122 is defined by the length of the bridging
member 128. In various embodiments, the width d of the c-shaped
channel 122 can be any width in the range of approximately 0.5''
(12.7 mm), 0.75'' (19.05 mm), 1'' (25.4 mm), or greater. In the
drip edge 100 depicted in FIGS. 1A-1D, the width d of the c-shaped
channel 122 is approximately 0.85'' (21.59 mm). Preferably, the
width of the c-shaped channel 122 is at least slightly larger than
the thickness of a fascia board to be installed. For example, the
0.85'' c-shaped channel 122 depicted in FIGS. 1A-1D is conveniently
sized to accommodate a fascia board having a nominal thickness of 1
inch (e.g., dimensional lumber of nominal size 1.times.2,
1.times.4, 1.times.6, or the like, having an actual thickness of
approximately 0.75'' or 19 mm), with a tolerance of approximately
0.1'' (2.54 mm).
[0061] A divot 135 is disposed along the lower surface of the tail
110 of the drip edge 100 behind the inner footing 124. The divot
135 is preferably located at or near the end of the tail 110, and
may be directly adjacent to the inner footing 124. The divot 135
comprises a locally thinner region of the drip edge 100. For
example, the divot 135 may be thinner than the adjacent portions of
the drip edge 100 (e.g., the lower section 112 of the tail 110, the
inner footing 124, and/or the bridging member 128) by approximately
10%, 25%, 40%, 50%, 75%, or any other suitable percentage. The
thickness of the drip edge 100 at the divot 135 may be selected so
as to be small enough to make the drip edge 100 locally bendable at
the divot 135 along a bending axis parallel or substantially
parallel to the length of the drip edge 100, while being large
enough to provide a robust connection between the tail 100 and the
outer section 120. Moreover, the divot 135 can facilitate bending
of the drip edge 100 along a desired bending axis while preventing
unwanted bending along other directions. In some embodiments, the
thickness of the drip edge 100 at the divot 135 may be
approximately equal to the thickness of the upper section 114 of
the tail 110.
[0062] Referring now to FIGS. 2A-2D, a drip edge 200 is depicted as
installed to a building substrate 250. The drip edge 200 installed
in FIGS. 2A-2D can be any of the drip edges 100, 300, 400, 500,
600, 700, 800 depicted and described herein. The building substrate
250 can be an eave or a portion thereof, or any other upper
structural portion of a building. For example, the building
substrate 250 can include a rafter, a truss, or the like. In some
embodiments, the substrate 250 is covered with a sheathing 255,
such as oriented strand board, plywood, or the like. The substrate
250 and/or optional sheathing 255 can receive mechanical fasteners
(e.g., nails or other fasteners) to secure the drip edge 200 and a
roofing material 260 relative the substrate 250 and/or sheathing
255.
[0063] As shown in FIGS. 2A and 2B, the drip edge 200 can be
secured to the sheathing 255 before a roofing material and fascia
board (not shown in FIGS. 2A-2B) are installed. The drip edge 200
is positioned for installation by positioning the tail 210 against
an upper surface 256 of the sheathing 255 or substrate 250 and
positioning a back surface 225 of an inner footing 224 against a
side-facing surface 257 of the sheathing 255 or substrate 250. When
the drip edge 200 has been placed against the substrate 250 or
sheathing 255, it can be secured in place by the use of mechanical
fasteners, such as nails, which may be driven downward into the
substrate 250 and/or sheathing 255 through the relatively narrow
upper section 214 of the tail 210.
[0064] At any time before, during, or after installation of the
drip edge 200 to the building substrate 250, the angle between the
tail 210 and the outer section 220 can be adjusted based on the
pitch of the roof by bending the drip edge 200 at the divot 235.
For example, the angle can be adjusted such that, when the tail 210
is lying parallel to the sheathing 255, the bridging member 228 is
oriented in a substantially horizontal direction and the inner and
outer footings 224, 226 are oriented in a substantially vertical
direction. The drip edge 200 may be bent at the divot 235 to the
appropriate angle before installation based on a measurement of the
pitch of the roof, or may be bent after installation based on an
observed deviation from the desired final orientation of the outer
section 220.
[0065] As shown in FIGS. 2C and FIGS. 2D, a roofing material 260
and a fascia board 265 can then be installed by securing to the
substrate 250 and/or sheathing 255. The roofing material 260 can be
any exterior roofing, for example, asphalt shingle, wood or other
shingle, tile, membrane roofing, metal roofing, thatch, or the
like. The roofing material 260 can be secured to the upper surface
256 by one or more mechanical fasteners such that the roofing
material 260 at least partially covers the tail 210 of the drip
edge 200, thereby directing water from the roof to be drained away
from the building efficiently by the drip edge 200.
[0066] The fascia board 265, which can be wood, metal, plastic, or
the like, is placed within the c-shaped channel 222 of the outer
section 220 of the drip edge 200. The thickness of the fascia board
265 can be selected so as to fit within the c-shaped channel 222 of
the drip edge 200. After the fascia board 265 is placed within the
c-shaped channel 222, the fascia board 265 is secured to the
side-facing surface 257 by one or more mechanical fasteners. In
some aspects, the use of the inner footing 224 as a guide for
positioning the drip edge 200 can thus allow a roofer to easily and
efficiently install the drip edge 200 with sufficient space for the
fascia board 265.
[0067] With reference to FIGS. 3A-8B, additional embodiments of the
drip edges described herein will be described. Each embodiment of a
drip edge 300, 400, 500, 600, 700, 800 depicted in FIGS. 3A-8B
comprises a tail 310, 410, 510, 610, 710, 810, and an outer section
320, 420, 520, 620, 720, 820 including an inner footing 324, 424,
524, 624, 724, 824 and an outer footing 326, 426, 526, 626, 726,
826. Thus, drip edges 300, 400, 500, 600, 700, 800 can be installed
to a building substrate in substantially the same manner as drip
edges 100, 200 described above.
[0068] FIGS. 3A and 3B depict an alternate configuration of a drip
edge 300 in which the bridging member 328 extends laterally beyond
the outer footing 326. Accordingly, the outer end of the bridging
member 328 is connected to the vertical portion of the outer
footing 326 by a second angled section 329. In addition, the angled
section 327 at the distal end of the outer footing 326 terminates
in a flat profile, rather than the filleted profile depicted and
described with references to FIGS. 1A-2D. In some embodiments, the
drip edge 300 depicted in FIGS. 3A and 3B may be implemented with a
filleted end profile.
[0069] FIGS. 4A and4B depict an alternative configuration of a drip
edge 400 similar to the drip edge 300. In the configuration of
FIGS. 4A and 4B, a distal section 428a of the bridging member 428
extends at a relatively shallow downward angle, such as between 5
degrees and 20 degrees. The downward slope of the distal section
428a of the bridging member 428 may further aid in facilitating
drainage of water, as gravity may tend to pull water along the
distal portion 428a away from the building. In some embodiments,
the drip edge 400 may be implemented with a filleted end profile.
In some embodiments, the filleted profile can be formed by folding
over the lower edge of the drip edge 400 in a manner such that the
fold has a rounded profile.
[0070] FIGS. 5A and 5B depict an alternative configuration of a
drip edge 500 similar to the drip edge 400, with a downward sloping
distal section 528a of a bridging member 528. In the configuration
of FIGS. 5A and 5B, the tail 510 and bridging member 528 are
substantially parallel, collinear, and/or coplanar. The drip edge
500 does not include a divot or other bendable feature. Thus, when
manufacturing the drip edge 500, the angle between the inner and
outer footings 524, 526 and the bridging member 528 may be selected
to be compatible with a desired range of roof pitches. In addition,
the tail 510 of the drip edge 500 has a substantially uniform
thickness, and is depicted without a locally thinner section for
accommodating mechanical fasteners passing through the tail 510. A
tail 510 of uniform thickness may be used with chemical fastening
means, and/or may be manufactured with apertures for receiving
mechanical fasteners. It will be appreciated that the configuration
of drip edge 500 may readily be implemented with a locally thin and
nailable portion of the tail 510.
[0071] FIGS. 6A and 6B depict an alternative configuration of a
drip edge 600 in which the outer footing 626 comprises an angled
section 627 near the distal end of the outer footing 626, as well
as a second vertical section 625 disposed distal to the angled
section 627. In some aspects, the second vertical section 625 below
the angled section 627 may function similarly to the filleted
profiles described elsewhere herein to facilitate the coalescence
of water traveling to the end of the angled section 627. Although
the drip edge 600 depicted in FIGS. 6A and 6B does not include a
divot, some embodiments of the drip edge 600 may equally include a
divot or other bending feature so as to accommodate a larger range
of roof pitches. Similarly, the outer footing 626 profile of FIGS.
6A and 6B may be implemented with the locally thin upper tail
sections 114, 214 depicted in FIGS. 1A-2D.
[0072] FIGS. 7A and 7B depict an alternative configuration of a
drip edge 700 generally similar to the drip edges 100, 200 depicted
in FIGS. 1A-2D, without a divot or similar bending feature. As
described with reference to FIGS. 5A and 5B, the angle between the
tail 710 and the bridging member 728 can be predetermined based on
the pitch of a particular roof and/or selected to be compatible
with a particular range of roof pitches.
[0073] FIGS. 8A and 8B depict an alternative configuration of a
drip edge 800 having an outer footing 826 with a profile generally
similar to the outer footing 326 of the drip edge 300 depicted in
FIGS. 3A and 3B. Unlike the drip edge 300 of FIGS. 3A and 3B, drip
edge 800 does not include a divot and has a tail 810 of
substantially uniform thickness, similar to the tails 510, 610
depicted in FIGS. 5A-6B.
[0074] FIG. 9 is a side profile view showing example dimensions of
one embodiment of a drip edge having a side profile similar to the
side profile of drip edge 100 depicted in FIGS. 1A-1D. In the
embodiment shown in FIG. 9, the drip edge has a full width of 3.553
inches (90.2462 mm). The tail has a width of 2.390 inches (60.706
mm), of which the innermost 0.443 inches (11.2522 mm) comprise a
narrowed upper end. The upper end has a thickness of 0.040 inches
(1.016 mm), 38.5% thinner than the lower portion of the tail, which
has a thickness of 0.065 inches (1.651 mm). The end of the outer
footing has a filleted profile, with an upper radius of curvature
of 0.040 inches (1.016 mm) and a lower radius of curvature of 0.020
inches (0.508 mm). The outer footing extends downward 1.242 inches
(31.5468 mm) vertically from the bridging member. Other dimensions,
angles, curvatures, and/or relationships between the various
dimensions, angles, and/or curvatures of this embodiment will
readily be understood as marked within FIG. 9.
[0075] Thus, as demonstrated by the various configurations
illustrated in FIGS. 3A-8B, particular embodiments of the drip edge
systems disclosed herein may include any combination of the
advantages of individual features and/or combinations of features
depicted and described without departing from the spirit or scope
of the present disclosure.
[0076] Certain features that are described in this disclosure in
the context of separate implementations can also be implemented in
combination in a single implementation. Conversely, various
features that are described in the context of a single
implementation can also be implemented in multiple implementations
separately or in any suitable subcombination. Moreover, although
features may be described above as acting in certain combinations,
one or more features from a claimed combination can, in some cases,
be excised from the combination, and the combination may be claimed
as any subcombination or variation of any subcombination.
[0077] Moreover, while methods may be depicted in the drawings or
described in the specification in a particular order, such methods
need not be performed in the particular order shown or in
sequential order, and that all methods need not be performed, to
achieve desirable results. Other methods that are not depicted or
described can be incorporated in the example methods and processes.
For example, one or more additional methods can be performed
before, after, simultaneously, or between any of the described
methods. Further, the methods may be rearranged or reordered in
other implementations. Also, the separation of various system
components in the implementations described above should not be
understood as requiring such separation in all implementations, and
it should be understood that the described components and systems
can generally be integrated together in a single product or
packaged into multiple products. Additionally, other
implementations are within the scope of this disclosure.
[0078] Conditional language, such as "can," "could," "might," or
"may," unless specifically stated otherwise, or otherwise
understood within the context as used, is generally intended to
convey that certain embodiments include or do not include, certain
features, elements, and/or steps. Thus, such conditional language
is not generally intended to imply that features, elements, and/or
steps are in any way required for one or more embodiments.
[0079] Conjunctive language such as the phrase "at least one of X,
Y, and Z," unless specifically stated otherwise, is otherwise
understood with the context as used in general to convey that an
item, term, etc. may be either X, Y, or Z. Thus, such conjunctive
language is not generally intended to imply that certain
embodiments require the presence of at least one of X, at least one
of Y, and at least one of Z.
[0080] Although making and using various embodiments are discussed
in detail below, it should be appreciated that the description
provides many inventive concepts that may be embodied in a wide
variety of contexts. The specific aspects and embodiments discussed
herein are merely illustrative of ways to make and use the systems
and methods disclosed herein and do not limit the scope of the
disclosure. The systems and methods described herein may be used
for treatment of process water from cementitious and/or fiber
cement building articles and are described herein with reference to
this application. However, it will be appreciated that the
disclosure is not limited to this particular field of use.
[0081] Some embodiments have been described in connection with the
accompanying drawings. The figures are drawn to scale, but such
scale should not be limiting, since dimensions and proportions
other than what are shown are contemplated and are within the scope
of the disclosed inventions. Distances, angles, etc. are merely
illustrative and do not necessarily bear an exact relationship to
actual dimensions and layout of the devices illustrated. Components
can be added, removed, and/or rearranged. Further, the disclosure
herein of any particular feature, aspect, method, property,
characteristic, quality, attribute, element, or the like in
connection with various embodiments can be used in all other
embodiments set forth herein. Additionally, it will be recognized
that any methods described herein may be practiced using any device
suitable for performing the recited steps.
[0082] While a number of embodiments and variations thereof have
been described in detail, other modifications and methods of using
the same will be apparent to those of skill in the art.
Accordingly, it should be understood that various applications,
modifications, materials, and substitutions can be made of
equivalents without departing from the unique and inventive
disclosure herein or the scope of the claims.
* * * * *