U.S. patent application number 17/692565 was filed with the patent office on 2022-09-15 for roofing underlayment.
The applicant listed for this patent is BMIC LLC. Invention is credited to Wilson Cheung, Adem Chich.
Application Number | 20220290434 17/692565 |
Document ID | / |
Family ID | 1000006251517 |
Filed Date | 2022-09-15 |
United States Patent
Application |
20220290434 |
Kind Code |
A1 |
Cheung; Wilson ; et
al. |
September 15, 2022 |
ROOFING UNDERLAYMENT
Abstract
A roofing underlayment includes a first layer of synthetic woven
or nonwoven material; a second layer of woven or nonwoven material;
a third layer of elastic recoverable material; and a fourth layer
of fire resistant material. The third layer may have a weight of 50
gsm to 300 gsm. The elastic recoverable material includes an
elastomer. The roofing underlayment can be configured to be secured
to a roof such that the roofing underlayment meets (a) ASTM D4869
water shower exposure test, (b) UL790 burning brand rating, and (c)
ASTM D1970 nail sealability.
Inventors: |
Cheung; Wilson;
(Hillsborough, NJ) ; Chich; Adem; (Kearny,
NJ) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
BMIC LLC |
Dallas |
TX |
US |
|
|
Family ID: |
1000006251517 |
Appl. No.: |
17/692565 |
Filed: |
March 11, 2022 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
63161144 |
Mar 15, 2021 |
|
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|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
E04D 5/10 20130101; E04D
5/06 20130101; E04D 12/002 20130101; E04D 11/02 20130101 |
International
Class: |
E04D 5/10 20060101
E04D005/10; E04D 11/02 20060101 E04D011/02; E04D 12/00 20060101
E04D012/00; E04D 5/06 20060101 E04D005/06 |
Claims
1. A roofing underlayment, comprising: a first layer of synthetic
woven or nonwoven material; a second layer of woven or nonwoven
material; a third layer of elastic recoverable material; wherein
the third layer has a weight of 50 gsm to 300 gsm; wherein the
elastic recoverable material comprises an elastomer; and a fourth
layer of fire resistant material; wherein the roofing underlayment,
when secured to a roof, meets: a) ASTM D4869 water shower exposure
test; b) UL790 burning brand rating; and c) ASTM D1970 nail
sealability.
2. The roofing underlayment of claim 1, wherein the elastomer
comprises a rubber-like elastomer, a thermoplastic elastomer (TPE),
or any combination thereof.
3. The roofing underlayment of claim 1, wherein the elastomer is
not an adhesive.
4. The roofing underlayment of claim 1, wherein the first layer,
the second layer, the third layer, and the fourth layer are
laminated with extrusion materials.
5. The roofing underlayment of claim 1, wherein the first layer is
a synthetic nonwoven material and includes a spunbond
polypropylene.
6. The roofing underlayment of claim 1, wherein the second layer is
a woven material and includes a scrim of synthetic woven fabric
including polypropylene.
7. The roofing underlayment of claim 1, wherein the first layer or
the second layer includes a weatherable layer including a
UV-resistant material arranged to be an outermost first or second
layer of the roofing underlayment.
8. The roofing underlayment of claim 1, further comprising an
adhesive layer arranged to be an innermost layer.
9. The roofing underlayment of claim 8, wherein the adhesive layer
includes a cover sheet.
10. The roofing underlayment of claim 1, wherein a total weight of
the roofing underlayment is from 170 gsm to 600 gsm.
11. The roofing underlayment of claim 1, wherein a total weight of
the roofing underlayment is from 200 gsm to 560 gsm.
12. The roofing underlayment of claim 1, wherein the roofing
underlayment has a topside coefficient of friction of 0.3 to
1.5.
13. The roofing underlayment of claim 1, wherein the roofing
underlayment has a backside coefficient of friction of 0.3 to
1.5.
14. The roofing underlayment of claim 1, wherein the roofing
underlayment meets Class A of UL790 burning brand rating.
15. A method, comprising: obtaining a first layer of synthetic
woven material; obtaining a second layer of nonwoven material;
obtaining a third layer of elastic recoverable material; wherein
the third layer has a weight of 50 gsm to 300 gsm; wherein the
elastic recoverable material comprises an elastomer; obtaining a
fourth layer of fire resistant material; and laminating the first
layer, the second layer, the third layer, and the fourth layer, so
as to result in a roofing underlayment; wherein the roofing
underlayment, when secured to a roof, meets: a) ASTM D4869 water
shower exposure test; b) UL790 burning brand rating; and c) ASTM
D1970 nail sealability.
16. A method, comprising: obtaining a roofing underlayment
comprising: a first layer of synthetic woven material; a second
layer of nonwoven material; a third layer of elastic recoverable
material; and wherein the third layer has a weight of 50 gsm to 300
gsm; wherein the elastic recoverable material comprises an
elastomer; and a fourth layer of fire resistant material; applying
the roofing underlayment to a steep slope roof substrate; and
securing the roofing underlayment to the steep slope roof substrate
to form a secured roofing underlayment; wherein the secured roofing
underlayment meets: a) ASTM D4869 water shower exposure test; b)
UL790 burning brand rating; and c) ASTM D1970 nail sealability.
17. The method of claim 16, wherein applying the roofing
underlayment to the steep slope roof substrate comprises: peeling a
sheet from the roofing underlayment; exposing an adhesive of the
roofing underlayment; and adhering the roofing underlayment to the
steep slope roof substrate.
18. The method of claim 16, wherein securing the roofing
underlayment includes fastening the roofing underlayment using
fasteners that do not include capped roofing nails.
19. The method of claim 16, wherein securing the roofing
underlayment comprises stapling the roofing underlayment to the
steep slope roof substrate.
20. The method of claim 16, wherein securing the roofing
underlayment comprises nailing the roofing underlayment to the
steep slope roof substrate using capless roofing nails.
Description
RELATED APPLICATIONS
[0001] This application claims priority to U.S. Provisional
Application No. 63/161,144, filed on Mar. 15, 2021, and titled
"ROOFING UNDERLAYMENT," the entire contents of which are hereby
incorporated by reference.
FIELD
[0002] This disclosure relates generally to a roofing underlayment.
More specifically, this disclosure relates to roofing underlayment
having excellent nail sealability, water proofing, and
fireproofing.
BACKGROUND
[0003] A roofing underlayment may be covered with different types
of roofing materials including, but not limited to, asphalt
shingles, metal shingles, concrete tiles, cedar shakes, polymeric
shingles, and the like. The roofing underlayment should pass fire
testing and water proofing testing.
[0004] Improved roofing underlayments are desirable.
SUMMARY
[0005] In some embodiments, a roofing underlayment includes a first
layer of synthetic woven or nonwoven material; a second layer of
woven or nonwoven material; a third layer of elastic recoverable
material; and a fourth layer of fire resistant material. In some
embodiments, the third layer has a weight of 50 gsm to 300 gsm. In
some embodiments, the elastic recoverable material includes an
elastomer. In some embodiments, the roofing underlayment, when
secured to a roof, meets (a) ASTM D4869 water shower exposure test,
(b) UL790 burning brand rating, and (c) ASTM D1970 nail sealability
test.
[0006] In some embodiments, the first layer is a synthetic nonwoven
material and includes a spunbond polypropylene.
[0007] In some embodiments, the second layer is a woven material
and includes a scrim of synthetic woven fabric including
polypropylene.
[0008] In some embodiments, the first layer or the second layer of
the roofing underlayment includes a weatherable layer including a
UV-resistant material arranged to be an outermost first or second
layer of the roofing underlayment.
[0009] In some embodiments, the roofing underlayment includes an
adhesive layer arranged to be an innermost layer of the roofing
underlayment. In some embodiments, the adhesive layer includes a
cover sheet.
[0010] In some embodiments, the elastomer comprises a rubber-like
elastomer, a thermoplastic elastomer (TPE), or any combination
thereof. In some embodiments, the TPE is selected from the group
consisting of a thermoplastic olefin (TPO), a styrene, a
copolyester, a polyamide, a polyurethane, a thermoplastic
vulcanizate (TPV), or any combination thereof. In some embodiments,
the TPV can be a vulcanized PP/EPDM compound.
[0011] In some embodiments, the elastomer is not an adhesive.
[0012] In some embodiments, the first layer, the second layer, the
third layer, and the fourth layer are laminated with extrusion
materials.
[0013] In some embodiments, a total weight of the roofing
underlayment is from 170 gsm to 600 gsm. In some embodiments, the
total weight of the roofing underlayment is from 200 gsm to 560
gsm.
[0014] In some embodiments, the roofing underlayment has a topside
coefficient of friction of 0.3 to 1.5.
[0015] In some embodiments, the roofing underlayment has a backside
coefficient of friction of 0.3 to 1.5.
[0016] In some embodiments, the roofing underlayment meets Class A
of UL790 burning brand rating.
[0017] In some embodiments, a method includes obtaining a first
layer of synthetic woven or nonwoven material; obtaining a second
layer of woven or nonwoven material; obtaining a third layer of
elastic recoverable material; and obtaining a fourth layer of fire
resistant material. In some embodiments, the third layer has a
weight of 50 gsm to 300 gsm. In some embodiments, the elastic
recoverable material includes an elastomer. In some embodiments,
the method includes laminating the first layer, the second layer,
the third layer, and the fourth layer, so as to result in a roofing
underlayment. In some embodiments, the roofing underlayment, when
secured to a roof, meets (a) ASTM D4869 water shower exposure test,
(b) UL790 burning brand rating, and (c) ASTM D1970 nail sealability
test.
[0018] In some embodiments, a method includes obtaining a roofing
underlayment including a first layer of synthetic woven or nonwoven
material; a second layer of woven or nonwoven material; a third
layer of elastic recoverable material; and a fourth layer of fire
resistant material. In some embodiments, the third layer has a
weight of 50 gsm to 300 gsm. In some embodiments, the elastic
recoverable material includes an elastomer. In some embodiments,
the method further includes applying the roofing underlayment to a
steep slope roof substrate. In some embodiments, the method
includes securing the roofing underlayment to the steep slope roof
substrate to form a secured roofing underlayment. In some
embodiments, the secured roofing underlayment meets (a) ASTM D4869
water shower exposure test, (b) UL790 burning brand rating, and (c)
ASTM D1970 nail sealability test.
[0019] In some embodiments, securing the roofing underlayment to
the steep slope roof substrate includes using fasteners that do not
include capped roofing nails.
[0020] In some embodiments, securing the roofing underlayment to
the steep slope roof includes stapling the roofing underlayment to
the steep slope roof.
[0021] In some embodiments, securing the roofing underlayment to
the steep slope roof includes nailing the roofing underlayment to
the steep slope roof.
BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Reference is made to the drawings that form a part of this
disclosure, and which illustrate the embodiments in which the
devices and methods described herein can be practiced.
[0023] FIG. 1 shows a roofing underlayment, according to some
embodiments.
[0024] FIG. 2 shows an exploded view of the roofing underlayment of
FIG. 1, according to some embodiments.
[0025] FIG. 3 shows an exploded view of the roofing underlayment of
FIG. 1, according to some embodiments.
[0026] FIG. 4 shows a method, according to some embodiments.
[0027] FIG. 5 shows a method, according to some embodiments.
[0028] Like reference numbers represent the same or similar parts
throughout.
DETAILED DESCRIPTION
[0029] Embodiments of this disclosure are directed to roofing
underlayments having good waterproofing and nail sealability, and
meeting fire rating standards. For example, the roofing
underlayments described herein can meet ASTM D4869 water shower
exposure test, UL790 burning brand rating, and ASTM D1970 nail
sealability test.
[0030] In some embodiments, a roofing underlayment includes a fire
resistant, nail sealable, and weatherable synthetic laminate
composite material that is useful as a water resistant and
skid-resistant roofing underlayment. In some embodiments, the
roofing underlayment includes a plurality of layers. In some
embodiments, the plurality of layers include a layer of elastic
recoverable material, a fire barrier, and a weatherable coating
which can be secured, for example with capless roofing nails or
staples, to provide resistance to liquid water transmission using
ASTM D4869 liquid-water transmission shower test, to meet Class A
UL790 burning brand rating, and to meet ASTM D1970 nail sealability
test.
[0031] UL790 burning brand rating includes testing procedures that
can typically be performed on a roofing system including a roofing
underlayment and roof coverings to meet different fire ratings
including Class A, B, or C. Class A roof coverings are effective
against severe fire exposure. Class B roof coverings are effective
against moderate fire exposure. Class C roof coverings are
effective against light fire exposure. In some embodiments, the
presence of the elastic recoverable material can enable usage of
nails without caps (e.g., nails other than capped roofing
nails).
[0032] In some embodiments, a "steep slope roof" includes any roof
substrate that is disposed on a roof having a pitch of Y/X, where Y
and X are in a ratio of 4:12 to 12:12, where Y corresponds to the
"rise" of the roof, and where X corresponds to the "run" of the
roof
[0033] FIG. 1 shows a roofing underlayment 10, according to some
embodiments.
[0034] In some embodiments, the roofing underlayment 10 can have a
high strength to weight ratio, elasticity, UV resistance, water
resistance, and fire resistance. For example, in some embodiments,
the roofing underlayment 10 can be more than 10 times lighter, more
than 10 times stronger, or any combination thereof, relative to an
asphalt-saturated felt underlayment. In some embodiments, the
roofing underlayment 10 can have a UV resistance that provides at
least 10 years of outdoor exposure stability. In some embodiments,
the roofing underlayment 10 can be secured to a roof. In some
embodiments, the roof can be a steep slope roof. In some
embodiments, the roofing underlayment 10 can be secured to the roof
using nails, adhesive, or any combination thereof. In some
embodiments, when secured to a roof, the roofing underlayment 10
can meet the ASTM D4869 water shower exposure test. In some
embodiments, when secured to a roof, the roofing underlayment meets
Class A fire rating of UL790 burning brand rating.
[0035] In some embodiments, the roofing underlayment 10 has a
weight that is 170 gsm or more. In some embodiments, the roofing
underlayment 10 has a weight that is 170 gsm to 600 gsm. In some
embodiments, the roofing underlayment 10 has a weight that is 170
gsm to 550 gsm. In some embodiments, the roofing underlayment 10
has a weight that is 170 gsm to 500 gsm. In some embodiments, the
roofing underlayment 10 has a weight that is 170 gsm to 450 gsm. In
some embodiments, the roofing underlayment 10 has a weight that is
170 gsm to 400 gsm. In some embodiments, the roofing underlayment
10 has a weight that is 170 gsm to 350 gsm. In some embodiments,
the roofing underlayment 10 has a weight that is 170 gsm to 300
gsm. In some embodiments, the roofing underlayment 10 has a weight
that is 170 gsm to 250 gsm. In some embodiments, the roofing
underlayment 10 has a weight that is 170 gsm to 200 gsm.
[0036] In some embodiments, the roofing underlayment 10 has a
weight that is 200 gsm to 600 gsm. In some embodiments, the roofing
underlayment 10 has a weight that is 250 gsm to 600 gsm. In some
embodiments, the roofing underlayment 10 has a weight that is 300
gsm to 600 gsm. In some embodiments, the roofing underlayment 10
has a weight that is 350 gsm to 600 gsm. In some embodiments, the
roofing underlayment 10 has a weight that is 400 gsm to 600 gsm. In
some embodiments, the roofing underlayment 10 has a weight that is
450 gsm to 600 gsm. In some embodiments, the roofing underlayment
10 has a weight that is 500 gsm to 600 gsm. In some embodiments,
the roofing underlayment 10 has a weight that is 550 gsm to 600
gsm.
[0037] In some embodiments, the roofing underlayment 10 has a
weight that is 50% to 80% of a total weight of a peel-and-stick
conventional roofing underlayment. In some embodiments, the roofing
underlayment 10 has a weight that is 60% to 80% of a total weight
of a peel-and-stick conventional roofing underlayment. In some
embodiments, the roofing underlayment 10 has a weight that is 70%
to 80% of a total weight of a peel-and-stick conventional roofing
underlayment.
[0038] In some embodiments, the roofing underlayment 10 has a
weight that is 50% to 70% of a total weight of a peel-and-stick
conventional roofing underlayment. In some embodiments, the roofing
underlayment 10 has a weight that is 50% to 60% of a total weight
of a peel-and-stick conventional roofing underlayment.
[0039] In some embodiments, a peel-and-stick conventional roofing
underlayment can have a weight of 400 gsm to 700 gsm.
[0040] In some embodiments, the roofing underlayment 10 can
alternatively be used in other applications including, but not
limited to, housewrap, vapor barriers, industrial packaging,
geomembranes, flashing, and soundproofing underlayments.
[0041] In some embodiments, the roofing underlayment 10 can have a
topside coefficient of friction of any amount, but in some
embodiments can be from 0.3 to 1.5. In some embodiments, the
topside coefficient of friction can be from 0.4 to 1.5. In some
embodiments, the topside coefficient of friction can be from 0.5 to
1.5. In some embodiments, the topside coefficient of friction can
be from 0.6 to 1.5. In some embodiments, the topside coefficient of
friction can be from 0.7 to 1.5. In some embodiments, the topside
coefficient of friction can be from 0.8 to 1.5. In some
embodiments, the topside coefficient of friction can be from 0.9 to
1.5. In some embodiments, the topside coefficient of friction can
be from 1 to 1.5. In some embodiments, the topside coefficient of
friction can be from 1.1 to 1.5. In some embodiments, the topside
coefficient of friction can be from 1.2 to 1.5. In some
embodiments, the topside coefficient of friction can be from 1.3 to
1.5. In some embodiments, the topside coefficient of friction can
be from 1.4 to 1.5.
[0042] In some embodiments, the topside coefficient of friction can
be from 0.3 to 1.4. In some embodiments, the topside coefficient of
friction can be from 0.3 to 1.3. In some embodiments, the topside
coefficient of friction can be from 0.3 to 1.2. In some
embodiments, the topside coefficient of friction can be from 0.3 to
1.1. In some embodiments, the topside coefficient of friction can
be from 0.3 to 1. In some embodiments, the topside coefficient of
friction can be from 0.3 to 0.9. In some embodiments, the topside
coefficient of friction can be from 0.3 to 0.8. In some
embodiments, the topside coefficient of friction can be from 0.3 to
0.7. In some embodiments, the topside coefficient of friction can
be from 0.3 to 0.6. In some embodiments, the topside coefficient of
friction can be from 0.3 to 0.5. In some embodiments, the topside
coefficient of friction can be from 0.3 to 0.4.
[0043] In some embodiments, the roofing underlayment 10 can have a
backside coefficient of friction of any amount, but in some
embodiments can be from 0.3 to 1.5. In some embodiments, the
backside coefficient of friction can be from 0.4. to 1.5. In some
embodiments, the backside coefficient of friction can be from 0.5
to 1.5. In some embodiments, the backside coefficient of friction
can be from 0.6 to 1.5. In some embodiments, the backside
coefficient of friction can be from 0.7 to 1.5. In some
embodiments, the backside coefficient of friction can be from 0.8
to 1.5. In some embodiments, the backside coefficient of friction
can be from 0.9 to 1.5. In some embodiments, the backside
coefficient of friction can be from 1 to 1.5. In some embodiments,
the backside coefficient of friction can be from 1.1 to 1.5. In
some embodiments, the backside coefficient of friction can be from
1.2 to 1.5. In some embodiments, the backside coefficient of
friction can be from 1.3 to 1.5. In some embodiments, the backside
coefficient of friction can be from 1.4. to 1.5.
[0044] In some embodiments, the backside coefficient of friction
can be from 0.3 to 1.4. In some embodiments, the backside
coefficient of friction can be from 0.3 to 1.3. In some
embodiments, the backside coefficient of friction can be from 0.3
to 1.2. In some embodiments, the backside coefficient of friction
can be from 0.3 to 1.1. In some embodiments, the backside
coefficient of friction can be from 0.3 to 1. In some embodiments,
the backside coefficient of friction can be from 0.3 to 0.9. In
some embodiments, the backside coefficient of friction can be from
0.3 to 0.8. In some embodiments, the backside coefficient of
friction can be from 0.3 to 0.7. In some embodiments, the backside
coefficient of friction can be from 0.3 to 0.6. In some
embodiments, the backside coefficient of friction can be from 0.3
to 0.5. In some embodiments, the backside coefficient of friction
can be from 0.3 to 0.4.
[0045] FIG. 2 shows an exploded view of the roofing underlayment 10
of FIG. 1, according to some embodiments. In FIG. 2, layers of the
roofing underlayment 10 are visible.
[0046] In some embodiments, the roofing underlayment 10 includes a
first layer 15, a second layer 20, a third layer 25, and a fourth
layer 30.
[0047] In some embodiments, the first layer 15 can include a
synthetic woven or nonwoven material. In some embodiments, a
synthetic woven material can include a woven fabric. In some
embodiments, examples of woven fabrics that can be used can
include, but are not limited to, open weave leno scrim (1.times.1,
2.times.2, 3.times.3 or 4.times.4) or woven fabric with coverage
ranging from 50% to 100% with pic count of 5.times.5 to
24.times.24. In some embodiments, examples of synthetic woven
materials include any polyolefin, including, but not limited to,
polyethylene, polypropylene, polyester (PET), fiberglass, nylon,
rayon, and blends thereof. In some embodiments, a synthetic
nonwoven material can include a spunbond polypropylene.
[0048] In some embodiments, the second layer 20 can include a woven
or a nonwoven material. In some embodiments, the nonwoven material
can include melt blown nonwovens, needlepunch nonwovens, spunlace
nonwovens, polyester nonwovens, polymeric films, glass mats, and
combinations thereof. In some embodiments, the nonwoven material
may be calendared or embossed with different types of patterns. In
some embodiments, the nonwoven material may be a single layer
and/or bi-component nonwoven. In some embodiments, the nonwoven
material can be used either alone or laminated with other
substrates. In some embodiments, the woven material can be a scrim
of woven fabric.
[0049] In some embodiments, the third layer 25 can include an
elastic recoverable material. In some embodiments, a suitable
elastic recoverable material can include an elastomer with good
elastic recovery or resilience, which is a measure of the ability
of a material to return to its original shape when a compression
load is removed. Examples of an elastic recoverable material
includes, but is not limited to, adhesive, a rubber-like elastomer,
a TPE, or any combination thereof. In some embodiments, the TPE can
be a TPO, a styrene, a copolyester, a polyamide, a polyurethane, a
TPV, or any combination thereof. In some embodiments, the TPV can
be a vulcanized PP/EPDM compound.
[0050] ASTM D1970 includes the following test procedure. A material
to be tested ("test material") is cut to make test specimens sized
12''.times.12''. At least two specimens are to be tested. The test
specimens are installed on 12''.times.12'' (3/8'' thick--APA Grade,
Exposure 1) plywood by mechanically securing (staple gun) each of
the four corners. Two roofing nails (1.25'') are hammered 1'' to
2'' apart near the center of the plywood so that the nail heads are
flush with the surface of the test specimens. The nails are placed
on different grains of plywood so if one fails, it does not flow
into the other nail. The nails are backed out about 0.25'' from the
coated surface by tapping the pointed ends of the nails. The
assemblies are placed on a tray. The bottom is removed from a 1
gallon tin can. The can is then placed in the center of the surface
having the nails. A bead of silicone sealant is applied around the
outside and inside of the rim of the can. The silicone bead is
pushed into the gap between the tin can and the coated surface, and
the sealant is allowed to cure for about 24 hours. After waiting
about 24 hours, deionized water is mixed with food coloring (as an
indicator for water penetration) to produce a dyed water, which is
used to fill the can to a depth of 5''. The entire assemblies,
along with the bottom tray, are placed in a refrigeration unit
maintained at 4.degree. C..+-.2.degree. C. for three days. On the
third day ahead of water exposure, the dyed water is poured out,
the inside of the can is blotted dry, and the can is removed. The
assemblies are inspected for any signs of dyed water on the
underside of the plywood, around the nail shanks, and between the
plywood and test material. The nails are removed, and the test
material is removed from around the nail holes to examine the
plywood for any dye stains. Any signs of dyed water result in a
failure. If dry, the specimen meets the nail sealability ASTM
D1970.
[0051] In some embodiments, the third layer 25 has a weight of 50
grams per square meter ("gsm") to 300 gsm. In some embodiments, the
third layer 25 has a weight of 60 gsm to 300 gsm. In some
embodiments, the third layer 25 has a weight of 70 gsm to 300 gsm.
In some embodiments, the third layer 25 has a weight of 80 gsm to
300 gsm. In some embodiments, the third layer 25 has a weight of 90
gsm to 300 gsm. In some embodiments, the third layer 25 has a
weight of 100 gsm to 300 gsm. In some embodiments, the third layer
25 has a weight of 110 gsm to 300 gsm. In some embodiments, the
third layer 25 has a weight of 120 gsm to 300 gsm. In some
embodiments, the third layer 25 has a weight of 130 gsm to 300 gsm.
In some embodiments, the third layer 25 has a weight of 140 gsm to
300 gsm. In some embodiments, the third layer 25 has a weight of
150 gsm to 300 gsm. In some embodiments, the third layer 25 has a
weight of 160 gsm to 300 gsm. In some embodiments, the third layer
25 has a weight of 170 gsm to 300 gsm. In some embodiments, the
third layer 25 has a weight of 180 gsm to 300 gsm. In some
embodiments, the third layer 25 has a weight of 190 gsm to 300 gsm.
In some embodiments, the third layer 25 has a weight of 200 gsm to
300 gsm. In some embodiments, the third layer 25 has a weight of
210 gsm to 300 gsm. In some embodiments, the third layer 25 has a
weight of 220 gsm to 300 gsm. In some embodiments, the third layer
25 has a weight of 230 gsm to 300 gsm. In some embodiments, the
third layer 25 has a weight of 240 gsm to 300 gsm. In some
embodiments, the third layer 25 has a weight of 250 gsm to 300 gsm.
In some embodiments, the third layer 25 has a weight of 260 gsm to
300 gsm. In some embodiments, the third layer 25 has a weight of
270 gsm to 300 gsm. In some embodiments, the third layer 25 has a
weight of 280 gsm to 300 gsm. In some embodiments, the third layer
25 has a weight of 290 gsm to 300 gsm.
[0052] In some embodiments, the third layer 25 has a weight of 50
gsm to 290 gsm. In some embodiments, the third layer 25 has a
weight of 50 gsm to 280 gsm. In some embodiments, the third layer
25 has a weight of 50 gsm to 270 gsm. In some embodiments, the
third layer 25 has a weight of 50 gsm to 260 gsm. In some
embodiments, the third layer 25 has a weight of 50 gsm to 250 gsm.
In some embodiments, the third layer 25 has a weight of 50 gsm to
240 gsm. In some embodiments, the third layer 25 has a weight of 50
gsm to 230 gsm. In some embodiments, the third layer 25 has a
weight of 50 gsm to 220 gsm. In some embodiments, the third layer
25 has a weight of 50 gsm to 210 gsm. In some embodiments, the
third layer 25 has a weight of 50 gsm to 200 gsm. In some
embodiments, the third layer 25 has a weight of 50 gsm to 190 gsm.
In some embodiments, the third layer 25 has a weight of 50 gsm to
180 gsm. In some embodiments, the third layer 25 has a weight of 50
gsm to 170 gsm. In some embodiments, the third layer 25 has a
weight of 50 gsm to 160 gsm. In some embodiments, the third layer
25 has a weight of 50 gsm to 150 gsm. In some embodiments, the
third layer 25 has a weight of 50 gsm to 140 gsm. In some
embodiments, the third layer 25 has a weight of 50 gsm to 130 gsm.
In some embodiments, the third layer 25 has a weight of 50 gsm to
120 gsm. In some embodiments, the third layer 25 has a weight of 50
gsm to 110 gsm. In some embodiments, the third layer 25 has a
weight of 50 gsm to 100 gsm. In some embodiments, the third layer
25 has a weight of 50 gsm to 90 gsm. In some embodiments, the third
layer 25 has a weight of 50 gsm to 80 gsm. In some embodiments, the
third layer 25 has a weight of 50 gsm to 70 gsm. In some
embodiments, the third layer 25 has a weight of 50 gsm to 60
gsm.
[0053] In some embodiments, the fourth layer 30 can include a fire
resistant material. Any fire resistant material may be suitable
such as, but not limited to, aluminum foil, a fire resistant
coating including fire retardants such as sodium borate, aluminum
trihydrate, halogen flame retardants, halogen-free flame retardants
(e.g., phosphorus-nitrogen flame retardant, intumescent compound,
expanded graphite, metal hydroxide such aluminum trihydrate and
magnesium hydroxide), or any combination thereof
[0054] In some embodiments, the first layer 15, second layer 20,
third layer 25, and fourth layer 30 can be arranged in a different
order. An example of a different ordering is shown in FIG. 3 and
described below.
[0055] In some embodiments, the roofing underlayment 10 can include
one or more additional layers. In the illustrated embodiment of
FIG. 2, these additional layers are illustrated in dashed lines.
For example, in some embodiments, the roofing underlayment 10 can
include a UV resistant layer 35. In some embodiments, the UV
resistant layer 35 is an outermost layer of the roofing
underlayment 10. In some embodiments, the UV resistant layer 35 can
be laminated to the first layer 15 or the second layer 20. Thus,
the UV resistant layer 35 can be arranged to be one of the first or
second outermost layers of the roofing underlayment. In some
embodiments, the roofing underlayment 10 can include an adhesive
layer 40. In some embodiments, the adhesive layer 40 is an
innermost layer of the roofing underlayment 10. In some
embodiments, the adhesive layer 40 can include a sheet 45 to cover
the adhesive layer 40. In such embodiments, the sheet 45 can be
removed to expose the adhesive layer 40. Such an adhesive layer 40
and sheet 45 combination may be referred to as a peel-and-stick
application.
[0056] In some embodiments, the adhesive layer 40 can include
bitumen or a PSA coating.
[0057] FIG. 3 shows an exploded view of the roofing underlayment 10
of FIG. 1, according to some embodiments. In FIG. 3, layers of the
roofing underlayment 10 are visible.
[0058] In some embodiments, the roofing underlayment 10 includes an
arrangement in which the second layer 20 and the first layer 15 are
reversed from FIG. 2. That is, the arrangement of the layers
includes the second layer 20, the first layer 15, the third layer
25, and the fourth layer 30. For simplicity of this Specification,
aspects of the roofing underlayment 10 in FIG. 3 will not be
described in further detail.
[0059] FIG. 4 is a flowchart of a method 100, according to some
embodiments.
[0060] In some embodiments, at block 105 the method 100 includes
obtaining a first layer of synthetic woven material. At block 110
the method 100 includes obtaining a second layer of nonwoven
material. At block 115 the method 100 includes obtaining a third
layer of elastic recoverable material. At block 120 the method 100
includes obtaining a fourth layer of fire resistant material.
[0061] In some embodiments, at block 125 the method 100 includes
laminating the first layer, the second layer, the third layer, and
the fourth layer, so as to result in a roofing underlayment. In
some embodiments, laminating the layers can include extrusion
lamination, adhesive lamination, or any combination thereof In some
embodiments, laminating the layers can include laminating the first
layer and the second layer to form a first laminate, then
laminating the first laminate to the third layer to form a second
laminate, then laminating the second laminate to the fourth layer,
so as to result in a roofing underlayment. In some embodiments, the
laminating can include laminating the different layers in a
different order than the preceding example. In some embodiments,
more than one lamination method can be used (e.g., both extrusion
lamination and adhesive lamination). In some embodiments, the
resulting roofing underlayment corresponds to the roofing
underlayment 10 described in accordance with FIGS. 1 and 2 above.
In some embodiments, the roofing underlayment is configured to be
secured to a roof such that the roofing underlayment meets (a) ASTM
D4869 water shower exposure test, and (b) UL790 burning brand
rating. In some embodiments, the third layer has a weight of 50 gsm
to 300 gsm.
[0062] FIG. 5 is a flowchart of a method 150, according to some
embodiments.
[0063] In some embodiments, at block 155, the method 150 includes
obtaining a roofing underlayment (e.g., the roofing underlayment 10
of FIGS. 1-2). In some embodiments, the roofing underlayment
includes a first layer of synthetic woven material; a second layer
of nonwoven material; a third layer of elastic recoverable
material; and a fourth layer of fire resistant material. In some
embodiments, the third layer has a weight of 50 gsm to 300 gsm.
[0064] In some embodiments, at block 160 the method 150 further
includes applying the roofing underlayment to a steep slope roof
substrate. In some embodiments, applying the roofing underlayment
to the steep slope roof substrate includes peeling a sheet from the
roofing underlayment; exposing an adhesive of the roofing
underlayment; and adhering the roofing underlayment to the steep
slope roof substrate. In some embodiments, at block 165 the method
150 includes securing the roofing underlayment to the steep slope
roof substrate to form a secured roofing underlayment. In some
embodiments, securing the roofing underlayment to the steep slope
roof substrate includes fastening the roofing underlayment to the
steep slope roof substrate. In some embodiments, fastening the
roofing underlayment to the steep slope roof substrate includes
stapling, nailing, or any combination thereof. In some embodiments,
nailing the roofing underlayment includes using fasteners that do
not include capped roofing nails. A "capped roofing nail" as used
herein generally includes a roofing nail (such as, but not limited
to, a galvanized roofing nail) having a cap for disbursing a hold
of the roofing nail to a larger surface area than the head of the
nail by itself. The cap can generally be disk-shaped and may have a
diameter in the range of 3/4'' to 1-1/4''. The cap can be, for
example, plastic or the like. In some embodiments, the secured
roofing underlayment meets (a) ASTM D4869 water shower exposure
test, and (b) UL790 burning brand rating.
[0065] Among those benefits and improvements that have been
disclosed, other objects and advantages of this disclosure will
become apparent from the following description taken in conjunction
with the accompanying figures. Detailed embodiments of the present
disclosure are disclosed herein; however, the disclosed embodiments
are merely illustrative of the disclosure that may be embodied in
various forms. In addition, each of the examples given regarding
the various embodiments of the disclosure are intended to be
illustrative, and not restrictive.
[0066] Throughout the specification and claims, the following terms
take the meanings explicitly associated herein, unless the context
clearly dictates otherwise. The phrases "in one embodiment," "in an
embodiment," and "in some embodiments" as used herein do not
necessarily refer to the same embodiment(s), though it may.
Furthermore, the phrases "in another embodiment" and "in some other
embodiments" as used herein do not necessarily refer to a different
embodiment, although it may. All embodiments of the disclosure are
intended to be combinable without departing from the scope or
spirit of the disclosure.
[0067] All prior patents, publications, and test methods referenced
herein are incorporated by reference in their entireties.
[0068] The terminology used herein is intended to describe
embodiments and is not intended to be limiting. The terms "a,"
"an," and "the" include the plural forms as well, unless clearly
indicated otherwise. The terms "comprises" and/or "comprising,"
when used in this Specification, specify the presence of the stated
features, integers, steps, operations, elements, and/or components,
but do not preclude the presence or addition of one or more other
features, integers, steps, operations, elements, and/or
components.
[0069] It is to be understood that changes may be made in detail,
especially in matters of the construction materials employed and
the shape, size, and arrangement of parts without departing from
the scope of the present disclosure. This Specification and the
embodiments described are examples, with the true scope and spirit
of the disclosure being indicated by the claims that follow.
* * * * *