ROOFING SYSTEMS AND METHODS
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United States of America Patent
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Issued Date -
Dec 27, 2018
app pub date -
Sep 5, 2018
filing date -
Sep 5, 2018
priority date (Note) -
Published
status (Latency Note)
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Abstract
A roofing system includes a plurality of insulation boards adapted for overlying a roof deck to form a layer of insulation, and a plurality of cover boards adapted for overlying the layer of insulation. Each of the plurality of insulation boards has opposing planar surfaces and has a facer on at least one planar surface, and each of the plurality of insulation boards includes polyisocyanurate foam having a first polyisocyanurate foam density. Each of the plurality of cover boards has opposing planar surfaces and has a facer on at least one planar surface, and each of the plurality of cover boards includes polyisocyanurate foam having a second polyisocyanurate foam density greater than the first polyisocyanurate foam density. Each of the plurality of cover boards also includes 1% to 25% by weight one or more fillers selected from the group consisting of organic fillers and inorganic fillers
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International Classification(s)
- B29C:SHAPING OR JOINING OF PLASTICS; SHAPING OF SUBSTAN....
- B29D:PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FRO....
- E04C:STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04D:ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING ....
- B29K:INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, ....
- B32B:LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA....
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