Underlayment with slip-resistant surface

Patent metadata

Field	Value
Publication number	US-9493954-B2
Application number	US-201414265419-A
Country	US
Kind code	B2
Filing date	Apr 30, 2014
Priority date	Sep 28, 2009
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

Abstract

A roofing underlayment comprising an asphalt-coated fibrous sheet having an upper surface and a lower surface is provided. A first portion of the upper surface has granules adhered thereto. A slip-resistant member is bonded to a second portion of the upper surface, an upper surface of the slip-resistant member having substantially no granules adhered thereto.

First claim

What is claimed is:

1. A roofing underlayment comprising:
an asphalt-coated fibrous sheet having an upper asphaltic surface and a lower asphaltic surface;
a plurality of granules adhered to a first portion of the upper asphaltic surface; and
a plurality of slip resistant tape members directly bonded to a second portion of the upper asphaltic surface and arranged longitudinally and substantially parallel with a central longitudinal axis of the underlayment;
wherein the plurality of slip resistant tape members includes a first slip resistant tape member disposed entirely on a first side of the central longitudinal axis of the underlayment, proximate a front edge of the underlayment, a second slip resistant tape member disposed entirely on a second side of the central longitudinal axis of the underlayment, proximate a rear edge of the underlayment, a third slip resistant tape member disposed entirely on the first side of the central longitudinal axis of the underlayment, spaced apart from the first slip resistant tape member and proximate the central longitudinal axis of the underlayment, and a fourth slip resistant tape member disposed entirely on the second side of the central longitudinal axis of the underlayment, spaced apart from the second slip resistant tape member and proximate the central longitudinal axis of the underlayment.

2. The roofing underlayment of claim 1 , wherein the plurality of slip resistant tape members comprises between four and eight slip resistant tape members.

3. The roofing underlayment of claim 1 , wherein each of the plurality of slip resistant tape members include an upper surface having substantially no granules adhered thereto.

4. The roofing underlayment of claim 1 , wherein each of the plurality of slip resistant tape members has a width within the range of from about ½ inch to about 4 inches.

5. The roofing underlayment of claim 1 , wherein each of the plurality of slip resistant tape members includes an upper surface having fine abrasive particles adhered thereto.

6. The roofing underlayment of claim 1 , wherein each of the plurality of slip resistant tape members is formed from a material selected from the group consisting of a polyester film, a polyolefin film, a paper strip, a scrim material, a woven glass, a non-woven glass, a woven polymer and a nonwoven polymer material.

7. The roofing underlayment of claim 1 , further comprising ridges of asphalt coating material formed along edges of each of the plurality of slip resistant tape members.

8. The roofing underlayment of claim 1 , wherein the asphalt-coated fibrous sheet is substantially rectangular.

9. The roofing underlayment of claim 1 , wherein the roofing underlayment is symmetrical about the central longitudinal axis.

10. The roofing underlayment of claim 1 , further comprising a release sheet applied to the lower asphaltic surface of the asphalt-coated fibrous sheet.

11. The roofing underlayment of claim 1 , wherein the lower asphaltic surface of the asphalt-coated fibrous sheet defines a bottommost surface of the roofing underlayment.

Assignees

• Owens Corning Intellectual Property Llc
• Owens Corning Intellectual Capital Llc

Inventors

• Grubka Lawrence J

Classifications

• E04D12/002

  Sheets of flexible material, e.g. roofing tile underlay · CPC title

• B32B11/10

  next to a fibrous or filamentary layer · CPC title

• E04D7/005 Primary

  characterised by loose or embedded gravel or granules as an outer protection of the roof covering · CPC title

• Y10T428/24372

  Particulate matter · CPC title

• B32B5/16 Primary

  characterised by features of a layer formed of particles, e.g. chips, powder {or granules (layer formed of natural mineral particles B32B19/00; layer being formed of wood fibres, chips or particles B32B21/02)} · CPC title