Big changes are coming to solar in 2025. What you don’t know could cost you. Read more.

0

G.A.P. Roof Underlayment

Limited stock
Customer Choice

G.A.P. ASTM 30 D226 Asphalt Saturated Roof Underlayment 36 in x 72 ft, 216 sq ft

  • Coverage area216sq ft
  • Underlayment typeAsphalt-saturated felt
  • Unrolled length72ft
  • Application methodNail/Staple

Pickup on Wed, Aug 06 from Miami, FL

  • Overview
  • Articles

What Makes G.A.P. Roofing Your Best Choice for Roof Protection?

G.A.P. Roofing has been manufacturing premium roofing and waterproofing products for over 30 years, establishing itself as America's #1 capacity leader in felt production. Based in Pryor, Oklahoma, this family-owned company operates manufacturing facilities across Texas, California, and Florida, ensuring nationwide availability and competitive G.A.P. roofing prices. Their vertically integrated approach includes their own paper mill, allowing complete quality control from raw materials to finished gap roofing underlayment products. This strategic manufacturing presence enables G.A.P. to deliver superior roof gap protection while maintaining cost-effective pricing for contractors and builders nationwide.

Why Choose G.A.P. Over Other Roofing Brands?

🏭 Proven Heritage: Over 30 years of manufacturing experience with #1 US capacity in felt production

🔬 Patented Innovation: Slip-resistant surface technology (U.S. Patent #7745353) for enhanced safety during installation

⚙️ Vertically Integrated: Own paper mill ensures consistent quality control and competitive gap underlayment pricing

🇺🇸 Nationwide Support: Four manufacturing locations provide reliable supply chain and personalized customer service

Which G.A.P. Product Series Best Fits Your Project?

G.A.P. WaterGuard™ All-Purpose Synthetic Series

Coverage & Key Feature400 sq ft per roll with patented slip-resistant surface
Target ApplicationResidential steep-slope roofing under asphalt shingles
Technical SpecsPolypropylene two-side coated woven fabric, 2.7 oz/yd² weight
Unique FeaturesPatented slip-resistant technology, grey non-woven top surface
Models AvailableWaterGuard All-Purpose (standard coverage)
Warranty & InstallationManufacturer warranty with technical support, mechanically fastened

G.A.P. WaterGuard™ Metal & Tile Series

Coverage & Key FeatureSpecialized for metal and tile applications with enhanced durability
Target ApplicationCommercial and residential metal roofing, tile installations
Technical SpecsHeavy-duty polypropylene construction, superior tear strength
Unique FeaturesAMT (Architectural Metal & Tile) specific formulation
Models AvailableMetalGuard HT (high temperature), Metal & Tile Standard
Weather ResistanceEnhanced UV stability and thermal cycling resistance

G.A.P. ASTM Felt Series

Coverage & Key Feature216 sq ft per roll, ASTM D226 Type 2 compliance
Target ApplicationTraditional residential and commercial underlayment
Technical SpecsSuperior quality organic felt saturated with asphalt
Unique FeaturesFlorida Building Code Approved (FL #2894.5), Miami-Dade approved
Models AvailableASTM 30 D226, G15 Felt, various weights available
InstallationTraditional nail-down installation, proven performance

How Does G.A.P. Compare to Leading Competitors?

Feature/CharacteristicG.A.P. WaterGuardCompetitor ACompetitor B
Coverage Area400 sq ft375 sq ft350 sq ft
Material TypePatented polypropyleneStandard syntheticBasic synthetic
Warranty PeriodFull manufacturerLimitedStandard
Price/Performance Ratio⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐⭐
Weather Resistance RatingSuperiorGoodStandard
Installation EasePatented slip-resistantStandardBasic
Notable StrengthsUS Patent #7745353, family-owned qualityVolume availabilityBasic protection

What Technical Specifications Make G.A.P. Superior?

Technical SpecificationG.A.P. Details
Material CompositionPolypropylene two-side coated woven fabric with non-woven top
Thickness & Weight6 mil overall thickness, 2.7 oz/yd² ±5% (ASTM D1777)
Water ResistanceSuperior moisture protection with vapor permeability
Independent TestingASTM D226 compliance, Florida Building Code approved
Weather ResistanceUV stable, thermal cycling tested, wind uplift rated
Tear StrengthEnhanced tear resistance with woven fabric construction
Nail Pull-ThroughSuperior fastener retention, reduced blow-off risk

What Do Industry Professionals Say About G.A.P.?

🏆 Professional Recognition: G.A.P. Roofing maintains Florida Building Code approval and Miami-Dade certification, demonstrating compliance with the nation's most stringent building standards. The company's 30-year manufacturing heritage and #1 US capacity position reflects widespread industry trust.

"The slip-resistant surface on G.A.P. WaterGuard makes installation so much safer, especially on steep slopes. We've used it on over 200 homes this year with zero callbacks."

"Being family-owned shows in their customer service. When we had questions about their MetalGuard HT for our commercial project, their technical team walked us through everything."

📈 Industry Standing: G.A.P.'s vertically integrated manufacturing and own paper mill operation ensures consistent quality that has earned recognition from distributors and contractors nationwide.

Frequently Asked Questions About G.A.P. Products

Where are G.A.P. underlayments manufactured?

G.A.P. operates manufacturing facilities in Pryor, Oklahoma (headquarters), McGregor, Texas, Shafter, California, and Jasper, Florida, ensuring nationwide coverage and supply chain reliability.

What warranty coverage does G.A.P. provide?

G.A.P. provides comprehensive manufacturer warranties on all products, with specific coverage varying by product line. WaterGuard synthetic products include technical support and installation guidance.

Are G.A.P. products suitable for extreme weather conditions?

Yes, G.A.P. underlayments are tested for thermal cycling, UV exposure, and wind uplift. Products maintain Florida Building Code approval and Miami-Dade certification for high-wind zones.

How does G.A.P. compare to competitors in performance?

G.A.P.'s patented slip-resistant surface technology (U.S. Patent #7745353) provides unique safety advantages during installation while maintaining superior weather protection.

What building code certifications do the products have?

G.A.P. products meet ASTM D226 standards, maintain Florida Building Code approval, and carry Miami-Dade certifications for high-velocity hurricane zones.

Is bulk purchasing available for contractors?

Yes, G.A.P.'s four manufacturing locations enable competitive bulk pricing and reliable delivery schedules for contractors and distributors nationwide.

Ready to Experience Superior Roof Protection?

Discover the complete G.A.P. roofing underlayment range, from synthetic WaterGuard products to traditional ASTM felt options. Check current G.A.P. roofing prices and secure your supply of America's most trusted gap roofing underlayment. With patented safety features, proven weather resistance, and three decades of manufacturing excellence, G.A.P. delivers the reliable protection your projects demand.

Shop G.A.P. Now

Stay tuned

Free and usefull digest on solar energy. No spam

By clicking "Subscribe", I agree by electronic signature to: (1) receive marketing and other texts and messages from A1 SolarStore, directly or from third parties acting on its behalf, at the email address I entered above; (2) the Terms and Conditions; and (3) the Privacy Policy.