Pedestaled roof underlayment
AssigneeKirsch Research and Development, LLC
InventorMark C. Strait
Life of this patent
Estimating the term…
Abstract
Pedestaled roof underlayment systems and methods are disclosed herein. A pedestaled roof underlayment system comprises a pedestaled sheet including a plurality of regularly spaced pedestals on one side and a generally flat surface on the other side. The system includes a multi-layer roofing underlayment including a slip resistant top layer, a UV protection layer and a strength layer. A reflective barrier layer may be included with the multi-layer roofing underlayment. The pedestaled sheet may be conical and/or tapered, and may have a top shape and cross section that may be circular, triangular, hexagonal and square.
Claims29
A pedestaled roof underlayment structure comprising:
- a pedestaled sheet including a matrix of individual pedestals integrally formed with the sheet and arranged in rows and columns on a first side of the sheet and a generally flat surface on a second side of the sheet, the second side structured to be laid on a roof deck structure over an attic cavity, each pedestal having a base, a side wall, and a top with a planform shape of one from among circular, triangular, hexagonal, and square, the pedestals separated from one another by a distance in the range from 0.188 inch to 0.40 inch in all directions at the base, the pedestaled sheet formed of material, the top having a hole configured to improve adhesive attachment;
- and
- a multi-layer roofing underlayment above the first side of the pedestaled sheet and configured to attach to the pedestaled sheet with adhesive in the hole of the pedestal and to form an air gap between the pedestaled sheet and the multi-layer roofing underlayment, the air gap extending through and between an area adjacent to the regularly spaced pedestals, the multi-layer roofing underlayment including a slip resistant top layer, a UV protection layer and a strength layer, wherein the slip resistant top layer is non-woven, spun-bond polypropylene or polyester fabric pressed deeply into the UV protection layer with a coefficient of friction to provide a slip-resistant surface while reducing loose fiber detachment, and wherein the strength layer is woven from strands of a thermoplastic polymer, the underlayment including a reflective barrier layer configured to bear against the pedestaled sheet and to reflect thermal radiation and reduce radiant heat transfer into the attic cavity.
A roof of a building having a pedestaled roof underlayment structure, the pedestaled roof underlayment structure comprising:
- a pedestaled sheet including a matrix of individual, regularly spaced pedestals on a first side of the sheet and a generally flat surface on a second side of the sheet, the second side structured to be laid on a roof deck structure, each individual pedestal having a base, a tapered side wall, and a top with a circular planform shape having a diameter in the range of 0.25 inch to 0.375 inch and a diameter at the base in the range of ⅜ inch to 15/16 inch, the pedestals separated from one another by a distance in the range from 0.188 inch to 0.40 inch in all directions at the base, the pedestaled sheet formed of material to support the weight of those walking on the underlayment structure, the top having a hole configured to improve adhesive attachment;
- and
- a multi-layer roofing underlayment above the first side of the pedestaled sheet and configured to attach to the pedestaled sheet with adhesive in the hole of the pedestal and to form an air gap between the pedestaled sheet and the multi-layer roofing underlayment, the air gap through and between an area adjacent to the regularly spaced pedestals, the multi-layer roofing underlayment including a slip resistant top layer, a UV protection layer and a strength layer, wherein the slip resistant top layer is non-woven, spun-bond polypropylene or polyester fabric pressed deeply into the UV protection layer with a coefficient of friction to provide a slip-resistant surface while reducing loose fiber detachment, and wherein the strength layer is woven from strands of a thermoplastic polymer, the underlayment including a reflective barrier layer configured to bear against the pedestaled sheet and to reflect thermal radiation and reduce radiant heat transfer to the roof deck structure and an underlying attic cavity.
Dependencies are inferred from the claim text.