Q. Why are wood 2x4s not good enough for a roof to hold a pipe?
When wood becomes wet, multiple things can happen. The wood may begin to rot and no longer serve as a support of the roof as anticipated; it can also create some damage as the harshness of the wood breaks through the roofing membrane. In other cases, the wood is going to move and leave the pipes unsupported, which is what we often see when running gas pipes. As the gas pipes begin to swell, there is not enough space for the movement of the pipe to be absorbed into the wood, which ultimately makes the wood base move.
Instead of having issues with the pipes and possible damage to the roof, we suggest using the MIRO pipe supports. Each of these is designed to move with the gas pipe as it expands, which is why it’s on a roller. In addition, the height off the roof can move from 4” to 12” for our stock items. The bases are round on the corners so it does not cut into the roofing membrane.