I will be constructing some cedar panels for a customers rooftop deck. Unfortunately the house has settled over the years, and the ceiling joists under the plywood subdeck and torch on membrane, have sagged and moved to produce a bit of a wavy surface. Therefore the water doesn’t always find it’s way to the four drains, and pools somewhat. I am wondering if anyone knows of an inorganic product to use as sleepers underneath the cedar deck boards rather than pressure treated cedar 1×4’s. That way the sleepers won’t rot. The new regulations regarding arsenic in treated lumber is a good thing…except that the new products for treating lumber suck!! The new stuff allows the wood to rot years and years earlier than any of the old products.
I thought about “Trex” type products, but they have a “honeycomb” type, hollow construction and I wish to rout some water grooves in the sleepers to help with the draining of water. If anyone has some suggestions, please help! :=)
“enjoy what you do, do what you enjoy”
Renovations by Roger