Rooftop and Sleeper Deck Systems – Pressure-Treated Framing
A sleeper system is a substructure between a solid surface and Trex decking. Drainage, access, and airflow are critical. Water must be able to flow through and away from the deck. For repairs and removal of debris, joist system access may be necessary.
NOTE: English measurements are shown. Convert to metric measurements if necessary.
3/16" (All Temps)
1/8" (>40°F) 3/16" (<40°F)
1/4" (>40°F) 1/2" (<40°F)
3/4" Max. Overhang
Min. 1-1/2"
Min. 1-1/2"
Residential = 16" Commercial = 12"
» It is recommended that building-code approved structural material be used as the supports. » This system should not be allowed to float. It must be attached in a manner that secures the framing/system. » The sleeper system must be level and have no uneven undulations. Any uneven areas of the substructure will transfer to the Trex decking, resulting in uneven decking. » Trex, when used with a sleeper system, must be supported below its entire length. If using in a roofing application, the supports must run the direction of the pitch of the roof to facilitate proper drainage. Sleeper should be placed perpendicular to the deck board orientation. » For commercial applications, consult a local building code official for specific requirements. » If installing decking at an angle, decrease spans 4" (100 mm) for each of the above. (12" (305 mm) for residential and 8" (204 mm) for commercial.)
» For sleeper systems where small debris (pine needles, leaves, sand, dirt) can accumulate either between or under deck boards, a minimum of 1-1/2" (38mm) height is allowable. Trex recommends the use of Trex Universal Hidden Fasteners or 2" Starborn Cap-Tor ® xd - Epoxy Coated screws. NOTE: Trex recommended composite decking screws are too long when using 1-1/2" (38 mm) height as this will penetrate through the sleeper. » For areas with the potential for debris buildup, a minimum 3-1/2" (89 mm) or greater height is recommended to allow the debris to be removed along with the use of either Trex Universal Hidden fasteners or any Trex recommended screws. » Always consult your local building code authority for proper details on roof and railing installation to the roof structure if required. » Any deviation from these recommendations could result in voiding of the Trex warranty.
40
NOTE: Construction methods are always improving. Please refer to www.trex.com for the most up-to-date installation requirements.
Made with FlippingBook - Online Brochure Maker