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Family Owned.
Committed to Quality.
Committed to You.
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Our Company

G.A.P. Roofing, Inc. was founded by the Passmore family with multiple generations of the Passmore family investing their money, time, energy, sweat, and tears in the idea of manufacturing quality roofing underlayment products for hard working Americans, just like them. 

Leveraging their extensive background in manufacturing and the roofing materials industry from previous roofing underlayment companies, Great Asphalt Products (G.A.P.), launched in 1990 in Pryor, Oklahoma.

What We Do

Since its inception, G.A.P. has been vertically integrated by producing its own building paper in their paper mill.

Manufacturing products to include saturated felt, roll roofing materials, synthetic underlayments, self-adhered modified bitumen underlayments for high-temperature applications, self-adhered base and cap sheets, roofing materials, and organic felt products. G.A.P. is focused on producing the best quality roofing materials and providing the best-in-class customer experience.

As a family-owned and operated company under the direction of company President, Christi Passmore, we pride ourselves on our commitment to providing a personalized customer experience, consistent product performance and the ability to be nimble in an ever-changing market. 

G.A.P. Roofing, Inc. Product Membranes

We are G.A.P. Roofing, Inc.
and roofing runs in our blood.

G.A.P. Roofing, Inc. Product Membranes

2020 marked 30 years of manufacturing quality roofing and waterproofing products. With three U.S.-based manufacturing facilities, G.A.P. produces:

  • SBS Self-Adhered SBS Base and Cap Sheets
  • Self-Adhered Roof Underlayments for Shingle,
    Tile and Metal Roofs
  • G2 Base Sheet
  • Saturate Felts
  • Building Paper Products