Concrete and metal sleepers work well for building retaining walls but these materials are too hard to attach normal deck boards to for a basic deck.
Roof wood sleepers.
Sleepers come in a variety of materials but only wood sleepers are regularly used in deck building.
Products for wood roofing maximum stretch ames maximum stretch is a thick high quality rubber and acrylic elastomeric roof coating designed specifically for waterproofing repairing and maintaining many different types of roofs.
That way your deck boards will run perpendicular to your radial sleepers.
1 4 6 4 mm minimum gap where the decking meets a solid wall maximum of 3 8 9 5 mm recommended 3 16 4 8 mm gap between boards.
I wouldn t use anything but treated lumber or even a composite or pvc material for the sleepers.
Metal roofing panels rated for architectural use attached to purlins horizontal pieces of wood or metal fastened to roofing trusses are structurally sound when installed according to your roofing manufacturer s instructions and local building codes.
In addition the wood will deteriorate and rot from.
Pine is not an ideal material for decking kind of a soft wood and tends to be knotty.
Nail down the decking.
And remember don t drive screws down through your flat roof.
This is the standard gapping for duralife products air should be allowed free movement under the structure do not.
Deck must be designed to ensure that proper drainage and air flow are maintained.
Even treated wood degrades when impregnated chemicals leach out of wood there is no greater exposure to the cycles of weather and seasons than the roof and wood sleepers are in the crosshairs.
But wood sleepers are on the way out because time has exposed numerous problems.
This low slope tpo roof on a public school building in michigan shows the flaws of using wood sleepers and the advantages of solar hvac knuckleheads for pipe supports.
Loose laid sleepers are subject to movement over time causing pipes to bend and contort.
The sleepers aren t fastened in place and the floor floats.
Stainless steel finish nails fasten the mahogany decking between the decking and the post and help with the decking down the rest of the job was the same as any.
Sleepers and the roof.
Wood blocks typically have to be replaced over the life of the roof.