Fire retardant roof structure for styrene insulated roofs and method for making the same
OwnerThomas L. Kellyinventor
Life of this patent
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Abstract
Disclosed is a fire retardant roof system with a roof deck, a sealant material applied to the roof deck to prevent fluid migration, a polystyrene insulation board upwardly adjacent the sealant material and a sealing material upwardly adjacent the polystyrene material. Further disclosed is a method for making a fire retardant roof structure. The method includes sealing all fluid passageways in a roof deck with a sealing material, applying a polystyrene material upwardly adjacent the roof deck and the sealing material and applying a further sealing material or cover board upwardly adjacent the polystyrene material.
Claims9
A method for making a fire retardant roof assembly including:
- applying a slow-rise fire retardant urethane spray foam, sprayed over length and widthwise joints of a corrugated metal deck, as well as any fastener or through-deck openings in the deck, to prevent the fluid migration through the deck;
- adhering polystyrene insulation to the slow-rise fire retardant urethane spray;
- overspraying the abutting board butt ends, to encapsulate each polystyrene board with foam;
- creating an insulation gap at perimeters, penetrations, curbs, abutting walls, and rooflop equipment a minimum of two inches, and filling gap with fire retardant slow-rise adhesive foam, to encapsulate those areas from fire exposure to the polystyrene foam;
- covering the polystyrene foam with a cover layer of fire retardant urethane spray foam;
- installing a single-ply waterproofing membrane over the single coat layer;
- air sealing the single-ply waterproofing membrane to the cover layer spray foam cover layer at perimeters and penetrations.
A method for making a fire retardant roof assembly including:
- applying a fire retardant polyurea coating, sprayed over length and widthwise joints of a corrugated metal deck, as well as any fastener or through-deck openings in the deck, to prevent the fluid migration through the deck;
- adhering polystyrene insulation with fire retardant spray polyurea and overspraying the abutting board butt ends, to encapsulate each polystyrene board with polyurea to form a monolithic insulation;
- creating an insulation gap at perimeters, penetrations, curbs, abutting walls, and rooflop equipment a minimum of ½″, and filling the gap with a fire retardant polyurea to encapsulate those areas from fire exposure to the polystyrene insulation;
- covering the polystyrene foam with a cover coat layer of fire retardant polyurea spray foam;
- installing a single-ply waterproofing membrane over the single coat layer;
- air sealing the single-ply waterproofing membrane to the single coat spray foam cover layer at perimeters and penetrations.
Dependencies are inferred from the claim text.