Roofing shingles with reduced usage of conventional shingle material having side lap extension
US-8925272-B1 · Jan 6, 2015 · US
US9932739B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9932739-B2 |
| Application number | US-201615245406-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 24, 2016 |
| Priority date | Aug 24, 2015 |
| Publication date | Apr 3, 2018 |
| Grant date | Apr 3, 2018 |
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A roofing material including a substrate having a top face and a bottom face. The roofing material further includes a non-asphalt coating applied to the substrate and an asphalt layer covering at least a portion of the top face. The bottom face is asphalt-free, or substantially asphalt-free.
Opening claim text (preview).
The invention claimed is: 1. A roofing material, comprising: a substrate having a top face and a bottom face; a non-asphalt coating applied to the substrate; an asphalt layer covering at least a portion of the top face; and a surface layer of granules adhered to the asphalt layer; wherein the substrate is fully impregnated with the non-asphalt coating such that substantially no asphalt from the asphalt layer impregnates the substrate; and wherein the bottom face of the substrate is substantially asphalt free. 2. The roofing material of claim 1 wherein the non-asphalt coating improves at least one shingle property of the group of tear resistance, tensile strength, nail pull resistance, wind resistance, fire resistance, shingle stiffness, cold curling resistance, masking ability, and shingle water shedding ability. 3. The roofing material of claim 1 wherein the non-asphalt coating includes at least one of the group of calcium carbonate, viscosity modifiers, dispersants, biocides, acrylic resins, clays, wollastonite, and powdered resins. 4. The roofing material of claim 1 wherein the roofing material is an asphalt roofing shingle.
performed by spraying · CPC title
to obtain a matt or rough surface · CPC title
performed by transfer from the surfaces of elements carrying the liquid or other fluent material, e.g. brushes, pads, rollers · CPC title
performed by gravity only, i.e. flow coating · CPC title
by mechanical means · CPC title
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