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VersaShield™ Fire Resistant Roof Deck Protection

Protect Your Roof From Moisture While Improving Its Fire Resistance With UL Class A Roof Deck Protection

Quality Roof Deck Protection provides an extra layer of moisture protection between your roofing material and the roof deck. However, in some jurisdictions, roof assemblies are also required to be fire resistant. A fire resistant roof deck protection:
  • Should provide the very best fire protection: a UL Class A rating on most homes and properties
  • Protects against dangerous flame spread and penetration into the interior of the property
  • Upgrades UL classification of most metal roofs to a UL Class A rating
  • Provides temporary moisture resistance while the roofing system is being installed
Property Owner’s Best Choice

  • Superior Protection…
    The best protection against fire spread and penetration

  • Looks Better…
    Fiberglass reinforced, so it lays flatter for a better-looking roof

  • Peace Of Mind…
    20 year limited warranty against manufacturing defects

Professional’s Best Choice

  • Convenient…
    Will upgrade the UL fire classification of almost any type of roof

  • Safer For Installers…
    Slip resistant walking surface improves traction on steep slopes

  • Increased Productivity…
    3.5 squares per roll means less rolls to carry to the roof

  • Easier To Use…
    Light color provides a cooler working surface

  • Flexibility…
    Can be left exposed for up to 60 days if necessary

VersaShield® Underlayment Product Specifications

PrescriptiveSpecificationTest Method
PackagedRollASTM D 146
Liner Feet/roll100 ft. minimumASTM D 146
Roll Width42 in.,+0.7%ASTM D 146
Area per roll350 sq. ft. minimumASTM D 146
Roll Weight52.5 lb. minimumASTM D 146
Fabric Weight15 lb. per 100 sq. ft. min.ASTM D 146
Loss on ignitionMaximum of 25%TAPPI T-1013-OM92
Performance Specs
Average Breaking Strength @ 77+2°F (Tensile Strength)60 lbf minimum (MD)
30 lbf minimum (CD)		ASTM D146/D 828, 1"X5" samples

Tear Strength
@ 77+2°F		400 grams minimum (MD)
550 grams minimum (CD)		ASTM D1922,
2.5"X3" samples
Water Vapor Transmission permeance, perm3 minimumE96
Liquid Water Transmission
Test		PassD4896

VersaShield® Underlayment Class A Rating Layer Requirements

Roofing MaterialRoof TypeMin. Thickness15/32" PlywoodExisting Wood Shake/ShingleSpaced Sheathing
UL Listed Stone Coated SteelDirect to deck shingle0.013"1 LayerN/A1 Layer
UL Classified or Listed SteelDirect to deck shingle0.013"1 Layer +
30 Felt		N/A1 layer +
30 Felt
Any UL Classified or Listed SteelBatten required shingle0.013"1 Layer2 Layers1 Layer
Any UL Classified or Listed SteelPanel of standing seam0.015"1 LayerN/A1 Layer
Any UL Classified or Listed CopperPanel of standing seam0.016"1 LayerN/A1 Layer
Any UL Classified or Listed CopperShingle0.016"1 Layer +
30 Felt		2 Layers1 Layer +
30 Felt
Any UL Classified or Listed AluminumPanel or shingle0.018"2 LayersN/A1 Layer

Note:For low-slope applications (2/12 to < 4/12), or where local codes require, use two layers of VersaShield® Underlayment.

VersaShield® Underlayment Class B Rating Layer Requirements

Roofing MaterialRoof TypeMin. Thickness15/32" PlywoodExisting Wood Shake/ShingleSpaced Sheathing
UL Classified or Listed SteelDirect to deck shingle0.013"1 LayerN/A1 Layer
Any UL Classified or Listed SteelBatten required shingle0.013"N/A1 LayerN/A
Any UL Classified or Listed CopperShingle0.016"1 Layer1 Layer1 Layer
Any UL Classified or Listed AluminumPanel or shingle0.018"1 Layer1 Layer1 Layer

When installed in accordance with section 4.2.1 of GAF's ESR-2053, VersaShield® underlayment can be used over existing wood shakes or shingles as an alternative to the covering materials specified in section 1510.4 of the IBC, section R907.4 of the IRC, or section 1513.3 of Chapter 15 Appendix to the UBC.

GAF
1361 Alps Rd.
Wayne, NJ 07470
Tollfree: (800) 766-3411
Web site: http://www.gaf.com
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