To protect against leaks, contractors typically nail one or two layers of “tar paper” to your roof before they install the tile. But “tar paper” doesn’t provide much protection because it’s made with conventional organic felt, which can become saturated with water and reduce its ability to prevent leaks. So even though you pay a large premium for a tile roof, your home — your most valuable asset — is potentially left vulnerable to water damage.

UnderRoof™ 2 waterproof protection is a specially-designed self-adhering leak barrier for tile roofs.

It provides maximum protection from leaks that can result from tile saturation, clogged gutters, wind-driven rain, or (in cold climates) freeze-thaw damage. Made with flexible SBS-modified compound and reinforced with a fiberglass-reinforced polyester core, UnderRoof™ 2 waterproof protection applies easily and can be left exposed for up to 180 days, if necessary. The heat-activated adhesive allows the product to be repositionable for ease of installation, but seals tightly once in place providing a watertight barrier against leaks.

The GAF-Elk Smart Choice^® Roofing System Solution (which includes UnderRoof™ 2 waterproof protection) has earned the prestigious Good Housekeeping Seal, which means that Good Housekeeping
stands behind the products in this system. (Refer to Good Housekeeping Magazine for its consumer protection policy.)

Installation Considerations
(before installing)

• Review Application Instructions...

  On packaging as well as detailed instructions available at your place of purchase, at www.gaf.com, or by calling GAF-Elk Technical Services at 1-800-766-3411. Also be sure to carefully review the tile manufacturer’s application instructions.
  
  

• Substrates...

  Should only be installed over clean, dry surfaces, including unwrinkled underlayment, such as GAF-Elk Deck-Armor™ or ASTM D 226 #30 organic felt, or directly to flat substrates, such as plywood. Contact GAF-Elk Technical Services for suitability of other substrates.
  
  

• Temperatures...

  Should be installed when temperatures are 45°F (17.8°C) or higher.
  
  

• Venting...

  In applications over the full deck, it is particularly important to be sure that the roof assembly/attic is properly ventilated.

Homeowner’s Best Choice

• Superior Protection...

  Waterproof membrane provides better protection than standard “tar paper”
  
  

• Less Chance Of Leaks...

  Unlike conventional “tar paper,” each layer seals to the next, helping to prevent water infiltration
  
  

• Seals Better...

  SBS-modified asphalt self-seals when penetrated by nails
  or fasteners
  
  

• No Unpleasant Fumes Or Flames...

  Eliminates the need for hot asphalt or open flames on
  your roof
  
  

• Less Disruption...

  Installs up to 50% faster than hot asphalt-based systems
  
  

• Peace Of Mind...

  Limited warranty up to 15 years, backed by North America’s largest roofing manufacturer

Professional’s Best Choice

• Safer For Installers...

  Installs without the need for hot asphalt or torches
  
  

• Slip Resistant...

  Polyester surfacing provides enhanced skid resistance
  
  

• Easier To Install..

  Flexible design conforms to irregular surfaces to help prevent leaks, even at the most vulnerable areas of the roof — like around chimneys, plumbing vents, and skylights
  
  

• Proven Technology...

  Based on the same technology as GAF-Elk’s modified bitumen self-adhering leak barriers
  
  

• Convenient...

  If necessary, can be left exposed for up to 180 days

Product Specifications (Nominal)

• Roll Length. . . . . . . . . . . . . . . . . . . . . . . . 67.8 ft (20.7 m)
• Roll Width. . . . . . . . . . . . . . . . . . . . . . . . . 39.4 in (1.0 m)
• Gross Square Feet Per Roll. . . . . . 222.5 sq ft (20.6 sq m)
• Approx. Coverage Per Roll. . . . . . . . 200 sq ft (18.6 sq m)

Applicable Standards

• ICC Pending
• Meets the performance criteria of ASTM D1970
• Texas Department of Insurance
• Miami-Dade County Approved
• State of Florida Approved