U.S. patent application number 09/785077 was filed with the patent office on 2001-10-25 for method of installing contoured roof ventilation strip and installation system.
Invention is credited to Rotter, Martin J..
Application Number | 20010032421 09/785077 |
Document ID | / |
Family ID | 26878592 |
Filed Date | 2001-10-25 |
United States Patent
Application |
20010032421 |
Kind Code |
A1 |
Rotter, Martin J. |
October 25, 2001 |
Method of installing contoured roof ventilation strip and
installation system
Abstract
A contoured roof ventilation system having a strip with an
air-permeable portion located adjacent to a ridge slot. Stand-off
clips are provided which can be placed over the air-permeable strip
at fastener locations which are located on flat portions of the
roof panels. A sealing material may be placed beneath the
air-permeable strip at such fastener locations to prevent the
ingress of moisture beneath the panels.
Inventors: |
Rotter, Martin J.;
(Glenside, PA) |
Correspondence
Address: |
VOLPE AND KOENIG, P.C.
SUITE 400, ONE PENN CENTER
1617 JOHN F. KENNEDY BOULEVARD
PHILADELPHIA
PA
19103
US
|
Family ID: |
26878592 |
Appl. No.: |
09/785077 |
Filed: |
February 16, 2001 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
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60182959 |
Feb 16, 2000 |
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Current U.S.
Class: |
52/198 ;
52/302.3; 52/57 |
Current CPC
Class: |
E04D 13/174 20130101;
F24F 7/02 20130101 |
Class at
Publication: |
52/198 ; 52/57;
52/302.3 |
International
Class: |
E04D 013/17; E04B
007/00; F24F 007/02 |
Claims
What is claimed is:
1. A contoured roof ventilation system comprising: a strip having
an air permeable section located adjacent to a ridge slot of a roof
structure; a stand-off clip located over the strip; a ridge cap
located over the ridge slot and at least a portion of the strip;
and at least one fastener driven through the cap, clip and strip
into the roof structure such that the clip limits local deformation
of the strip at the fastener.
2. The contoured roof ventilation system of claim 1, wherein the
strip is formed to fit an exterior roof surface profile.
3. The contoured roof ventilation system of claim 1, wherein the
strip has a depression in a contact area of each of the stand-off
clips.
4. The contoured roof ventilation system of claim 1, wherein the
stand-off clip is generally U-shaped.
5. The contoured roof ventilation system of claim 1, wherein the
fasteners are threaded.
6. The contoured roof ventilation system of claim 1, wherein the
roof structure comprises roof panels having raised sections, and
the fasteners are located at the roof panel raised sections.
7. The contoured roof ventilation system of claim 1, wherein the
roof structure comprises roof panels having raised sections, and
the clips are located between roof panel raised sections.
Description
BACKGROUND
[0001] It is known to ventilate the roof structure of a building
utilizing a ridge vent. Such vents are created by an open slot
running along the roof ridge, which causes ventilation out of the
attic by convection air flow and by suction from wind blowing
across the roof. A strip of air permeable material is installed
over the ridge slot which prevents the ingress of moisture and
debris, but allows air flow for ventilation. A ridge cap is then
installed over the air permeable strip.
[0002] For roofs having contoured shapes, such as roofs having an
outer surface formed by a roofing panel having a plurality of
stiffening ribs and standing seams, it is known to use a
ventilation strip having a surface which includes a plurality of
recesses shaped to match the ribs or standing seams of the roof
panel. The strip has an air-permeable portion in order to allow
airflow. A ridge cap is then installed over the air-permeable
strip. Such a system is described in U.S. Pat. No. 5,561,953, which
was invented by the present inventor.
[0003] A problem has been identified, however, which arises during
the installation of a ridge cap over the ventilation strips. The
problem is based upon collapse of the air permeable strip in the
fastener connection area. The problem does not exist for some
styles of roofs in which fasteners can be installed on or near
stiffening ribs. However, when fastening occurs away from a
stiffening rib, through the ridge cap, the ventilation strip and
into the decking, the ventilation strip can collapse during
fastener installation, resulting in an uneven or damaged ridge cap.
This can also create an entry point for moisture through the ridge
cap and into the sheathing and internal roof support structure.
SUMMARY
[0004] The present invention is generally directed to a system for
installing a ridge vent on a contoured roof in which a strip having
an air-permeable portion is provided with a surface shape to match
the projections of the contoured roof surface. Stand-off clips are
provided which can be placed over the contoured, air-permeable
strip at fastener locations which are located on flat portions of
the roof panels.
[0005] In another aspect of the invention, a ridge vent system
utilizing contoured air-permeable strips is provided. Stand-off
clips are used at fastener locations on flat portions of the
roofing panels. A sealing material is placed beneath the
air-permeable strip at such fastener locations to prevent the
ingress of moisture beneath the panels.
BRIEF DESCRIPTION OF THE DRAWING(S)
[0006] The foregoing Summary, as well as the following detailed
description of the preferred embodiments of the invention will be
better understood when read in conjunction with the appended
drawings. For the purposes of illustrating the invention, there are
shown in the drawings embodiments which are currently preferred. It
should be understood, however, that the invention is not limited to
the precise arrangements shown.
[0007] FIG. 1 is a perspective view of a portion of a roof ridge
showing the installation of a roof ridge vent with a contoured
air-permeable and resilient strip and stand-off clips in accordance
with the present invention.
[0008] FIG. 2 is a cross-sectional view taken along line 2-2 in
FIG. 1.
[0009] FIG. 3 is a cross-sectional view of a portion of the roof
ridge shown in FIG. 1.
[0010] FIG. 4 is an enlarged perspective view of the air-permeable
and resilient strip on the contoured roof panels with the stand-off
clip positioned at a fastener location.
[0011] FIG. 5 is an enlarged perspective view of an alternative
embodiment of the air-permeable and resilient strip on alternate
roof panels with the stand-off clips being utilized at each of
fastener location.
[0012] FIG. 6 is a cross sectional view taken along line 6-6 in
FIG. 5.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT(S)
[0013] Certain terminology is used in the following description for
convenience only and is not considered limiting. The words
"right,""left,""lower," and "upper" designate directions in the
drawings to which reference is made. This terminology includes the
word specifically noted above, derivatives thereof and words of
similar import. Additionally, the terms "a" and "one" are defined
as including one or more of any reference item unless specifically
noted.
[0014] Referring now to FIG. 1, a roof venting system 10 in
accordance with the present invention is shown. The roof venting
system 10 is described in relation to a sloped roof 12 having a
decking 14 which is covered by an outer, weatherproof sheet 16,
preferably formed by a plurality of contoured roof panels 18. The
contoured roof panels 18 may be made of metal, fiber glass or any
other suitable material and preferably include a plurality of
stiffening ribs 28, with the ribs located at the edges of the
contoured roof panels 18 being used to form a standing seam 40
between adjacent panels.
[0015] The upper row of decking 14 terminates approximately 3/4 to
1 inch short of the crest of the roof ridge thereby defining a vent
slot 26. The vent slot 26 may also be created during construction
of the roof or may be retrofitted using a circular saw to cut a
slot in the decking 14.
[0016] A strip 30, having an air permeable portion to allow
ventilation, is preferably shaped on its lower surface 44 to match
the contours of the roof panes 18. Preferably, one strip 30 is
provided on either side of the vent slot 26. The ridge cap 24 is
secured to the decking 14 over the strips 30 using a series of
fasteners 36. As shown in FIG. 2, preferably the screw fasteners 36
are located at a standing seam 40 or at a stiffening rib 28, if
possible. However, fasteners 36 are often required at locations
along the contoured roof panels 18 at the spacing of 18-24 inches
in order to ensure that the ridge cap 24 is securely held in
position. At these intermediate, non-rib locations which fall in
the flat field area of the contoured roof panels 18, it is possible
to over-drive the screw fasteners 36, thereby bending the ridge cap
24 and over compressing the strip 30. In the preferred embodiment,
the fasteners are screws, however, those skilled in the art will
recognize other suitable fasteners, such as nails, can be used for
the application.
[0017] As shown in detail in FIGS. 1 through 4, preferably a
stand-off clip 52 is provided at these locations in order to
prevent the screw fasteners 36 from over compressing the strip 30.
Each stand-off clip 52 is preferably U shaped and is dimensioned to
fit over the strip 30. The legs 54 of the stand-off clip 52 can be
provided over-sized and trimmed to the proper size at installation.
Alternatively, different size stand-off clips 52 can be provided to
match the different thicknesses of the strip 30 which may be
utilized. In the preferred embodiment, the stand-off clip 52 is
made of galvanized metal. However, those skilled in the art will
recognize from the present disclosure that other suitable materials
could be used to make the stand-off clip 52. In a preferred
embodiment, the stand-off clip 52 is approximately 3 in. wide and
the legs are approximately 2 in. long such that they can be trimmed
to size at installation.
[0018] Because the stand-off clips 52 or typically utilized in the
flat field area of the contoured roof panels 18, preferably a
sealing material 56 is provided at each stand-off clip location.
The sealing material 56 may be a strip of butyl rubber, having an
adhesive located on one side, or any other suitable sealing
material compatible with the particular contoured roof panels 18.
The sealing material 56 may be provided in pre-cut pieces or
partially perforated strips which can be separated from a sheet of
release paper, and placed in position under the strip 30 at each
fastener location which does not correspond to a sufficiently large
stiffening rib 20 to prevent over-driving of the fastener 36.
[0019] While the strip 30 must have at least a portion that is
air-permeable to allow the passage of air to ventilate the roof,
preferably the entire strip 30 is an air-permeable material 32.
Although other air-permeable-materials could be used, the preferred
air permeable material 32 is a strip of non-woven synthetic fiber
matting, as described in the inventor's prior U.S. Pat. No.
5,167,579, which is incorporated herein by reference as if fully
set forth.
[0020] While the stand-off clips 52 are only located in the areas
on the contoured roof panels 18 which do not include a large
stiffening rib 28 or standing seam 40, as shown in the alternate
embodiment of the roofing system in FIGS. 5 and 6, certain types of
roof panels 18 include ribs 28 and standing seams 40 which are too
small to reliably be penetrated with the fastener 36. In such
installations, the stand-off clips 52 are located in the flat area
of the roofing panel 18 adjacent to the ribs 20 or standing seams
40 at the desired spacing required for holding the ridge cap 24 in
place. Preferably, the sealing material 56 is also provided at
these locations in order to prevent moisture in grants at the
positions where the screw fastener 36 penetrates the contoured roof
panel 18.
[0021] The strip 30 completely fills the space between the
contoured roof panel 18 and the ridge cap 24, with the ridge cap 24
engaging the planer upper surfaces 46 of the strip 30. The lower
surface 44 of the strip 30 matches the contour of the roof panels
18. Those skilled in the art will recognize from the present
disclosure that different contours in the strip 30 will be required
and that the thickness of the strip 30 may vary, depending upon the
height of the ribs 20 and standing seams 40.
[0022] In order to install the ridge vent in accordance with the
present invention, after the contoured roof panels 18 have been
installed on the decking 14, the strips 30 are placed along each
side of the open slot 26 running along the ridge. The stand off
clips 52 are placed at the desired spacing over the strip 30 at the
fastener locations for the ridge cap 24 which do not fall on
standing seams 40 or stiffening ribs 28 which can receive a
fastener 36 for holding the ridge cap 24 in position. Preferably,
the sealing material 56 is placed on the surface of the contoured
roof panel 18 under each stand-off clip 52. The ridge cap pieces 34
are then placed in position over the stand-off clips 52 and the
strips 30. The fasteners 36 are then driven through the ridge cap
24, the stand off clips 52, the strip 30, the contoured roof panels
18 and into the decking 14 at the desired locations along the ridge
cap 24 to hold the ridge cap 24 in position. The fasteners 36 may
also be driven through the ridge cap 24, the strip 30 and standing
seams 40 or ribs 28 of sufficient size.
[0023] While the preferred embodiments of the invention have been
described in detail, the invention is not limited to the specific
embodiments described above, which should be considered as merely
exemplary. For example, the stand-off clips 52 can be used in
conjunction with other types of roofs, such as composition rules,
as well as with other types of air-permeable strips 30 in order to
prevent over-driving of the fasteners through the ridge vent.
Further modifications and extensions of the present invention may
be developed, and all such modifications are deemed to be within
the scope of the present invention as defined by the appended
claims.
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