Patent US4288964A successfully refreshed from Google Patents.
US4288964A
Expired / Lapsed
US
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Method for the insulation of roofs
Assignee: Rockwool AS
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Filing: 1979-03-19
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Granted: 1981-09-15
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Expires: 1999-03-19
Abstract
Abstract Method for insulating of roofs by which insulating slabs of mineral wool with fibres bonded at their intersections are placed on top of the water-impermeable membrane on the roof. The insulating slabs on their surface facing the water-impermeable membrane are provided with a vapor-impermeable foil.
Inventors
- 👤 Jorgen S. Petersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:09
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/16; E04D13/1606; E04D13/1662
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
In a method for insulating roofs having a water-impermeable membrane on the exposed surface thereof whereby insulating material, in the form of slabs, is placed on top of the water-impermeable membrane; the improvement which comprises utilizing insulating slabs consisting of mineral wool with fibres which are mutually bonded at their intersections by means of a resin and wherein the surfaces of the slabs facing the water-impermeable membrane are provided with a vapour-impermeable foil.
Claim 2
Dependent Claim
73 words
In a method for insulating roofs having a water-impermeable membrane on the exposed surface thereof whereby insulating material, in the form of slabs, is placed on top of the water-impermeable membrane; the improvement which comprises utilizing insulating slabs consisting of mineral wool with fibres which are mutually bonded at their intersections by means of a resin and wherein the surfaces of the slabs facing the water-impermeable membrane are provided with a vapour-impermeable foil.
Claim 3
Dependent Claim
17 words
Method according to claim 1, characterized in that the slabs are fastened to the roof by gluing.
Claim 4
Dependent Claim
26 words
Method according to claim 1, characterized in that the slabs are fastened to the roof by the addition of a weight on top of the slabs.
Claim 5
Dependent Claim
27 words
Method according to claim 1, characterized in that the vapour-impermeable foil is extended to at least partially to cover the side faces of the mineral wool slabs.
Claim 6
Dependent Claim
40 words
Method according to claim 4, characterized in that the extension consists of an asphalt layer applied to the side faces, which asphalt layer may form part of the bonding or the insulating slabs to the water-impermeable membrane of the roof.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-09-14 | 1985-03-16 | 1985-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-09-14 | 1989-03-16 | 1989-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-09-14 | 1993-03-16 | 1993-09-15 | $7700.00 | Window Closed / Lapsed |