CA2308919C - Roofing material with encapsulated fibrous mat - Google Patents

Roofing material with encapsulated fibrous mat Download PDF

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Publication number
CA2308919C
CA2308919C CA 2308919 CA2308919A CA2308919C CA 2308919 C CA2308919 C CA 2308919C CA 2308919 CA2308919 CA 2308919 CA 2308919 A CA2308919 A CA 2308919A CA 2308919 C CA2308919 C CA 2308919C
Authority
CA
Canada
Prior art keywords
roofing membrane
coating
fibrous mat
membrane material
adhesive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CA 2308919
Other languages
French (fr)
Other versions
CA2308919A1 (en
Inventor
Thomas Zickell
James Karlis
Charles Diman
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Owens Corning Intellectual Capital LLC
Original Assignee
Northern Elastomeric Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/315,281 external-priority patent/US6531200B2/en
Application filed by Northern Elastomeric Inc filed Critical Northern Elastomeric Inc
Publication of CA2308919A1 publication Critical patent/CA2308919A1/en
Application granted granted Critical
Publication of CA2308919C publication Critical patent/CA2308919C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

A roofing membrane material is disclosed. The material is characterized in that it includes a woven or non-woven fibrous mat encapsulated within a non-adhesive asphalt coating, the resulting encapsulated mat having an adhesive asphalt layer applied to one surface thereof. An acrylic coating is applied to the surface of the encapsulated mat that is not in contact with the adhesive asphalt layer. The resulting membrane, when applied to a roofing deck, provides a high traction surface that will not adhere to shingles and provides an effective waterproofing seal on the roofing deck.

Claims (28)

1. A roofing membrane material which comprises:

a) a fibrous mat having an upper surface and a lower surface;

b) a non-adhesive asphalt coating which encapsulates the fibrous mat; and c) an adhesive asphalt coating applied to the lower surface of the encapsulated mat.
2. The roofing membrane material of Claim 1 wherein the fibrous mat comprises a non-woven fibrous mat.
3. The roofing membrane material of Claim 1 wherein the fibrous mat comprises fibers selected from the group consisting of polyesters, polypropylenes and fiberglass.
4. The roofing membrane material of Claim 1 wherein the encapsulated fibrous mat further includes a polymeric coating on at least a portion of the upper surface.
5. The roofing membrane material of Claim 4 wherein the polymeric coating is provided with a coating of a finely-ground mineral.
6. The roofing membrane material of Claim 5 wherein the finely-ground mineral comprises talc.
7. The roofing membrane material of Claim 4 wherein the polymeric coating is selected from the group consisting of ethylene vinyl acetate, polyurethanes, polyethylenes, latex, acrylic polymers and polyesters.
8. The roofing membrane material of Claim 1 which further includes a release sheet adhered to the adhesive asphalt coating.
9. The roofing membrane material of Claim 1 wherein the non-adhesive asphalt coating comprises, in combination:

a) an oxidized asphalt; and b) a filler material.
10. The roofing membrane material of Claim 1 wherein the filler material comprises limestone filler.
11. The roofing membrane material of Claim 1 wherein the adhesive asphalt coating comprises, in combination:

a) a flux asphalt;
b) a filler material;

c) a material selected from the group consisting of styrene-butadiene copolymers and styrene-butadiene-styrene copolymers; and d) a tackifying oil.
12. The roofing membrane material of Claim 11 wherein the filler material comprises limestone filler.
13. A method for making a roofing membrane material which comprises the steps of:

a) providing a web comprising a fibrous mat having an upper surface and a lower surface;

b) encapsulating the web within a non-adhesive asphalt coating; and c) forming an adhesive asphalt coating on the lower surface of the encapsulated mat.
14. The method of claim 13 wherein the web comprises a non-woven fibrous mat formed of fibers selected from the group consisting of polyesters, polypropylenes and fiberglass.
15. The method of claim 14 wherein the fibrous mat further includes a polymeric coating on at least a portion of the upper surface.
16. The method of claim 15 wherein the polymeric coating is provided with a coating of a finely-ground mineral.
17. The method of claim 16 wherein the finely-ground mineral comprises talc.
18. The method of claim 15 wherein the polymeric coating is selected from the group consisting of ethylene vinyl acetate, polyurethanes, polyethylenes, latex, acrylic polymers and polyesters.
19. The method of claim 13 wherein the non-adhesive asphalt coating comprises, in combination:

a) an oxidized asphalt; and b) a filler material.
20. The method of claim 19 wherein the filler material comprises limestone filler.
21. The method of claim 13 wherein the adhesive asphalt coating comprises, in combination:

a) a flux asphalt;
b) a filler material;

c) a material selected from the group consisting of styrene-butadiene copolymers and styrene-butadiene-styrene copolymers; and d) a tackifying oil.
22. The method of claim 20 wherein the filler material comprises limestone filler.
23. A roofing membrane material which comprises:

a) a fibrous mat having an upper surface and a lower surface;

b) a non-adhesive polymeric coating which encapsulates the fibrous mat; and c) an adhesive asphalt coating applied to the lower surface of the encapsulated mat.
24. The roofing membrane of claim 23 wherein the non-adhesive polymeric coating is selected from the group consisting of ethylene vinyl acetate and polyurethane.
25. A roofing membrane material which comprises:

a) a polymeric fibrous mat having an upper surface and a lower surface;

b) a non-adhesive asphalt coating applied to the lower surface of the mat; and c) an adhesive asphalt coating applied to the non-adhesive asphalt coating.
26. The roofing membrane of claim 25, wherein the polymeric fibrous mat comprises a non-woven polyester mat.
27. The roofing membrane of claim 25, wherein the non-adhesive asphalt comprises, in combination:

a) an oxidized asphalt; and b) a filler material.
28. The roofing membrane material of Claim 25 wherein the adhesive asphalt coating comprises, in combination:

a) a flux asphalt;
b) a filler material;

c) a material selected from the group consisting of styrene-butadiene copolymers and styrene-butadiene-styrene copolymers; and d) a tackifying oil.
CA 2308919 1999-05-20 2000-05-19 Roofing material with encapsulated fibrous mat Expired - Lifetime CA2308919C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/315,281 US6531200B2 (en) 1998-06-29 1999-05-20 Roofing material with encapsulated fibrous mat
US09/315,281 1999-05-20

Publications (2)

Publication Number Publication Date
CA2308919A1 CA2308919A1 (en) 2000-11-20
CA2308919C true CA2308919C (en) 2010-02-23

Family

ID=23223696

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2308919 Expired - Lifetime CA2308919C (en) 1999-05-20 2000-05-19 Roofing material with encapsulated fibrous mat

Country Status (1)

Country Link
CA (1) CA2308919C (en)

Also Published As

Publication number Publication date
CA2308919A1 (en) 2000-11-20

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Effective date: 20200519