ROOFING UNDERLAYMENT

• US 20150126088A1
• Filed: 10/31/2014
• Published: 05/07/2015
• Est. Priority Date: 11/01/2013
• Status: Abandoned Application

• Current Assignee: Tamko Building Products Incorporated
• Original Assignee: Tamko Building Products Incorporated
• Inventors: Humphreys, David C., Shifferd, Michael R., Bradley, Robert L., Russell, Steven L., Guza, Zachary J.
• Application Number:
  US14/530,289
• Publication Number:
  US 20150126088A1
• Time in Patent Office: Days
• US Class Current: 442/165
• CPC Class Codes: D06N 2201/042 Cellulose fibres, e.g. cotton
• CPC Class Codes: D06N 2201/082 Glass fibres
• CPC Class Codes: D06N 5/003 coated with bitumen
• CPC Class Codes: E04D 12/002 Sheets of flexible material, e.g. roofing tile underlay
• CPC Class Codes: Y10T 442/2869 Coated or impregnated regenerated cellulose fiber fabric

Abstract

A roofing underlayment comprising a carrier substrate included a felt mixture and a binder mixture, and a volume of asphalt flux saturating the carrier substrate. The felt mixture may comprise between about seventy-five percent and about ninety-five percent by weight corrugated paper/cardboard fibers and between about five percent and about twenty-five percent by weight fiberglass fibers. The volume of asphalt flux may comprise between about twenty-five and fifty percent of a total weight of the roofing shingle underlayment and may saturate the carrier substrate at a saturation percentage between about thirty and about one hundred percent. The binder mixture may include a mixture of alum and rosin having a mixture ratio by weight of alum to rosin in a range between one to one (1:1) and four to one (4:1).

Claims

1. A roofing underlayment comprising:

a carrier substrate comprising a felt mixture and a binder mixture;

a volume of asphalt flux saturating said carrier substrate;

wherein said felt mixture comprises between seventy-five percent and ninety-five percent by weight corrugated paper/cardboard fibers and between five percent and twenty-five percent by weight fiberglass fibers; and

wherein said binder mixture comprises a mixture of alum and rosin having a mixture ratio by weight of alum to rosin in a range between one to one (1;

1) and four to one (4;

1).

2. The roofing underlayment of claim 1 wherein said volume of asphalt flux comprises between twenty-five and fifty percent of a total weight of said roofing shingle underlayment and saturates said carrier substrate at a saturation percentage between thirty and one hundred percent.

3. The roofing underlayment of claim 2 wherein said volume of asphalt flux saturates said carrier substrate at a saturation percentage between forty and sixty percent.

4. The roofing underlayment of claim 1 wherein said carrier substrate comprises between fifty and seventy-five percent of a total weight of said roofing underlayment.

5. The roofing underlayment of claim 4 wherein said volume of asphalt flux saturates said carrier substrate at a saturation percentage between forty and sixty percent.

6. A roofing underlayment comprising:

a carrier substrate comprising a felt mixture and a binder mixture, said felt mixture comprises between seventy-five percent and ninety-five percent by weight corrugated paper/cardboard fibers and between five percent and twenty-five percent by weight fiberglass fibers and said binder mixture comprises a mixture of alum and rosin having a mixture ratio by weight of alum to rosin in a range between one to one (1;

1) and four to one (4;

1); and

a volume of asphalt flux saturating said carrier substrate, wherein said volume of asphalt flux results in a carrier saturation of between forty and fifty-five percent.