I manufacture a pipe support for commercial rooftops. This product replaces a wood block 4x4 sometimes called a sleeper. My dilemma is the mechanical contractor and the roofer try to get the other person to be in charge of pipe supports on the roof. Generally the practice is to use wood blocks. The is a bad practice because wood blocks are not designed to allow for thermal expansion, water or UV. A great deal
of repair work is because the wood block has moved back and forth over time which wear the roof down.
Any Suggestions on how to solve this catch 22
Thank You
Tom