Revisions log for Answer #902
This is the answer to the question What kind of wood to choose for roof terrace decking?
Revision 1
We did it the following way:
Drilled holes with a 125mm auger to a depth of 70 cm, then hammered short 125 KG pipes to a total height, about 10 cm above the ground. Then poured concrete all the way to the top and troweled. These are our foundations.
Then the aluminum profiles are screwed to this edge. A 10mm thick rubber is glued to the top edge as a distance, damping and drying layer. We planed and sanded the top with 30mm thick oak boards because we didn't want to have monkey wood. Screwed directly into the aluminum tube with screws.
I would do it again in a heartbeat, it has lasted over 10 years without any twisting or other trouble. The protective fleece underneath wasn't absolutely necessary, but it prevents plants from growing out of the crevices.