US4599258A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In situ roofing composite and method
Assignee: Individual
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Filing: 1985-03-25
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Granted: 1986-07-08
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Expires: 2005-03-25
Abstract
Abstract The invention comprises a built-up roof composite that is used upon seamed roof substrates. The composite has a membrane that is simultaneously formed and affixed to a base sheet adhered to the roof substrate. The membrane comprises a sheet of heat-resistant, non-woven polyester sandwiched between layers of asphalt. The upper asphalt layer is caused to flow through the polyester and meld with the lower layer of asphalt to form a homogeneous membrane.
Inventors
- 👤 John P. Hageman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:01
CPC Classifications
E; E04; E04D; E04D5/00; E04D5/10; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24273; Y10T428/24322; Y10T428/24331; Y10T428/24339; Y10T428/24347; Y10T428/24355; Y10T428/24372; Y10T428/24421; Y10T428/2443; Y10T428/249921; Y10T428/249924; Y10T428/24994; Y10T428/249953; Y10T428/249981; Y10T428/249987; Y10T428/31504; Y10T428/31786; Y10T428/31815; Y10T442/00; Y10T442/60; Y10T442/647; Y10T442/651; Y10T442/652; Y10T442/693; Y10T442/699
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
114 words
A built-up, in situ roofing composite applied upon a roof substrate having seams, comprising: a first layer of water-proofing ingredients selected from a group consisting of asphalt, modified asphalt and coal tar; a base sheet applied over said first layer; a second layer of water-proofing ingredients applied over said base sheet; at least one ply of non-woven polyester sheeting overlaying said second layer of water-proofing ingredients; a third layer of water-proofing ingredients applied over said polyester sheeting, said third layer melding with said second layer to form a composite with said polyester sheeting; and an insulating, heat-resistant layer of material disposed over said built-up composite membrane forming a roofing composite that is substantially split-resistant.
Claim 2
Dependent Claim
114 words
A built-up, in situ roofing composite applied upon a roof substrate having seams, comprising: a first layer of water-proofing ingredients selected from a group consisting of asphalt, modified asphalt and coal tar; a base sheet applied over said first layer; a second layer of water-proofing ingredients applied over said base sheet; at least one ply of non-woven polyester sheeting overlaying said second layer of water-proofing ingredients; a third layer of water-proofing ingredients applied over said polyester sheeting, said third layer melding with said second layer to form a composite with said polyester sheeting; and an insulating, heat-resistant layer of material disposed over said built-up composite membrane forming a roofing composite that is substantially split-resistant.
Claim 3
Dependent Claim
31 words
The built-up, in situ roofing composite of claim 1, wherein said base sheet includes materials selected from a group consisting of: fiberglass, paper, asbestos, non-permeable polyester, felt, and organic base sheet.
Claim 4
Dependent Claim
24 words
The built-up roofing composite of claim 1, wherein said insulating layer comprises a material selected from a group consisting of-gravel, granules and heat-resistant foam.
Claim 5
Dependent Claim
13 words
The built-up roofing composite of claim 2, wherein said foam comprises a polyurethane.
Claim 6
Dependent Claim
13 words
The built-up roofing composite of claim 2, wherein said foam comprises an isocyanurate.
Claim 7
Dependent Claim
14 words
The built-up roofing composite of claim 1, wherein said roofing substrate comprises heat-resistant foam.
Claim 8
Dependent Claim
13 words
The built-up roofing composite of claim 2, wherein said foam comprises a polyurethane.
Claim 9
Dependent Claim
13 words
The built-up roofing composite of claim 2, wherein said foam comprises an isocyanurate.
Claim 10
Dependent Claim
25 words
The built-up roofing composite of claim 1, wherein said polyester has a weight in a range of approximately 4 to 14 ounces per square yard.
Claim 11
Dependent Claim
25 words
The built-up roofing composite of claim 9, wherein said polyester has a weight in an approximate range of 5.5 to 7.5 ounces per square yard.
Claim 12
Dependent Claim
12 words
The built-up roofing composite of claim 1, wherein said polyester is embossed.
Claim 13
Dependent Claim
28 words
The built-up roofing composite of claim 2, wherein said insulating material comprises granules, and further comprising a layer of mastic disposed between said second layer and said granules.
Claim 14
Dependent Claim
121 words
A built-up, in situ roofing composite applied to a roof substrate having seams, comprising: a first layer of asphalt applied to a roof substrate; a base sheet applied over said first layer; a second layer of asphalt applied to said base sheet; at least a single ply of non-woven polyester sheeting overlaying said first layer; a third layer of asphalt applied over said polyester, said third layer flowing through said polyester and melding with said second layer to form a built-up composite membrane which is affixed to said base sheet which is adhered to the roof substrate; and an insulating, heat-resistant layer of material disposed over said built-up composite membrane, said insulating layer including a layer of mastic covered by granules.
Claim 15
Dependent Claim
121 words
A built-up, in situ roofing composite applied to a roof substrate having seams, comprising: a first layer of asphalt applied to a roof substrate; a base sheet applied over said first layer; a second layer of asphalt applied to said base sheet; at least a single ply of non-woven polyester sheeting overlaying said first layer; a third layer of asphalt applied over said polyester, said third layer flowing through said polyester and melding with said second layer to form a built-up composite membrane which is affixed to said base sheet which is adhered to the roof substrate; and an insulating, heat-resistant layer of material disposed over said built-up composite membrane, said insulating layer including a layer of mastic covered by granules.
Claim 16
Independent Claim
130 words
A method of fabricating in situ, a roofing composite, applied over a roof substrate having seams, comprising the steps of: (a) applying a first layer of water-proofing ingredients to a roof substrate; (b) overlaying said first layer with a base sheet; (c) applying a second layer of water-proofing ingredients to said base sheet; (d) overlaying said second layer with at least a single ply of polyester sheeting; (e) applying a third layer of water-proofing ingredients over said polyester and brooming said ingredients into said polyester sheeting; (f) causing said third layer of water-proofing ingredients to flow through said polyester and meld with said second layer of water-proofing ingredients to form a composite membrane which is affixed to said substrate; and (g) covering said composite membrane with a heat-resistant insulating layer.
Claim 17
Independent Claim
130 words
A method of fabricating in situ, a roofing composite, applied over a roof substrate having seams, comprising the steps of: (a) applying a first layer of water-proofing ingredients to a roof substrate; (b) overlaying said first layer with a base sheet; (c) applying a second layer of water-proofing ingredients to said base sheet; (d) overlaying said second layer with at least a single ply of polyester sheeting; (e) applying a third layer of water-proofing ingredients over said polyester and brooming said ingredients into said polyester sheeting; (f) causing said third layer of water-proofing ingredients to flow through said polyester and meld with said second layer of water-proofing ingredients to form a composite membrane which is affixed to said substrate; and (g) covering said composite membrane with a heat-resistant insulating layer.
Claim 18
Dependent Claim
40 words
The method of claim 14, wherein said water-proofing ingredients comprise asphalt, and wherein said applying step (e) includes brooming said asphalt upon said polyester, said asphalt being in a temperature range of approximately 350 degrees F. to 480 degrees F.
Claim 19
Dependent Claim
20 words
The method of claim 14, wherein said covering step (g) includes applying a layer of gravel over said composite membrane.
Claim 20
Dependent Claim
26 words
The method of claim 14, wherein said covering step (g) includes applying a layer of mastic upon said composite membrane and overlaying said mastic with granules.
Claim 21
Dependent Claim
21 words
The method of claim 14, wherein said covering step (g) includes spraying a layer of heat-resistant foam over said composite membrane.
Claim 22
Dependent Claim
13 words
The method of claim 14, wherein said roof substrate includes a foam material.
Claim 23
Dependent Claim
27 words
The method of claim 14, wherein said base sheet includes materials selected from a group consisting of: fiberglass, paper, asbestos, non-permeable polyester, felt, and organic base sheet.
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USPTO Annuity & Maintenance Windows
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| 3.5 Years (Year 4) | 1989-07-07 | 1990-01-06 | 1990-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-07 | 1994-01-06 | 1994-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-07 | 1998-01-06 | 1998-07-08 | $7700.00 | Window Closed / Lapsed |