Roofing system including insulation and cover boards
AssigneeJohns Mansville
InventorsDuane Paradis, Christopher J Griffin, Raymond C Swann, Joel Evan Hazy, Brad C Burdic
Life of this patent
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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 insulation board includes a polymer foam material having a first density. Each cover board includes a material including polyisocyanurate, the material having a second density greater than the first. The foam material of the insulation boards may include, for example, polystyrene, polyurethane, or a phenolic material. The insulation boards and cover boards may include facers on top or bottom surfaces.
Claims30
A roofing system, comprising:
- a plurality of insulation boards adapted for overlying a roof deck to form a layer of insulation, each insulation board comprising a polymer foam material, the polymer foam material having a first density;
- and
- a plurality of cover boards adapted for overlying the layer of insulation, each cover board comprising a material including polyisocyanurate, the material having a second density;
- wherein the second density is greater than the first density.
A roofing system, comprising:
- a plurality of insulation boards adapted for overlying a roof deck to form a layer of insulation, each insulation board comprising a polymer foam material, the polymer foam material having a first density;
- and
- a plurality of cover boards adapted for overlying the layer of insulation, each cover board comprising a material including polyisocyanurate, the material having a second density;
- wherein the second density is greater than the first density;
- wherein the first density is between about 1 lbs/ft3 and about 3 lbs/ft3;
- and wherein each of the cover boards has a thickness between about 0.08 inches and about 0.75 inches.
A roofing system, comprising:
- a plurality of insulation boards adapted for overlying a roof deck to form a layer of insulation, each insulation board comprising a foam core layer of a polymer or predominantly polymer material, the foam core layer of the insulation board having a first density;
- and
- a plurality of cover boards adapted for overlying the layer of insulation, each cover board comprising a core layer of a material including polyisocyanurate, the core layer of the cover board having a second density;
- wherein the second density is greater than the first density.
Dependencies are inferred from the claim text.