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Why would the world’s largest saturated felt underlayment manufacturer introduce a synthetic product?
Simply put, there are many roofing installation needs where even the best 30# Saturated Felt in the world is not designed for the long exposure and toughness requirements provided by a synthetic woven fabric product such as SUMMIT™. Saturated Felt will always be the most common underlayment product for use when the job is being dried in immediately and no special performance needs are being considered. However, many jobs have a long open time from the dry-in to the roof covering being installed and do need a tougher product, or the owner simply has the desire to use a premium product. That’s why Atlas is offering SUMMIT™!
SUMMIT™ is constructed of a light weight, extremely strong, woven polypropylene fabric, with UV and water resistive coatings and packaged for convenience in 10 square rolls weighing less than 30 lbs. each. SUMMIT™ is unaffected by exposure to water and sunlight for at least 6 months - exactly what is needed to survive those special needs jobs.
Coverage w/4" Lap: 917 sq.ft. Roll Size: 48" x 250´ Material Per Roll: 1000 sq. ft.
Features:
- High tear strength
- 6-month min. UV resistance
- Inorganic construction
- Assumes shingle warranty
- High coefficient of friction
- Printed lay-up lines
- High burst strength
- 10 sq. roll size - < 30 lbs. per roll - Available at all Atlas plants |
SUMMIT™ Synthetic Underlayment is an inorganic, high strength woven fabric based roof system component appropriate for use in virtually all steep slope roof covering systems. SUMMIT™ is fully compatible with asphalt shingles, metal roof coverings, Clay Tile, Slate, Concrete Tiles, Wood Shingles and Shakes or any other code approved, steep slope roof covering. The UL Classification demonstrates conformance to critical fire testing requirements. SUMMIT™ is designed to provide for the lifetime need of an underlayment, offering water-shedding redundancy within the roof system while protecting the structure from water damage.
| SUMMIT™ must be installed on code approved roof decks, which are properly ventilated according to all applicable building codes.
Complete Instructions
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| Performance characteristics exceed - ASTM D4869, Type l, Type ll, Type lll, Type lV , (Standard specifi cation for asphalt saturated felt)
AC 207, Ultraviolet Exposure for 6 months
AC 207, Accelerated Ageing
ASTM D 108, Fire Resistance
ASTM D6757, Inorganic shingle underlayment standard
UL 790, Fire resistance
UL Classifi ed as a Prepared Roofi ng Accessory
Atlas Signature Select - system component
Spec this Product
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Features & Benefits Safer to walk on, holds fasteners
Maintains integrity of performance
Does not absorb water
Warranty matches Atlas shingle term
Good walking traction
Resists high wind blow-offs
Easy alignment on roof
Resists fastener pull through
More coverage, less labor
Easier and safer to handle
Available 1 pallet at a time
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