In regards to roofing, Owens Corning has a great checklist and you can find it at the link below! Here are just a few items to check though:
-Accredidation and good standing with the BBB
-Additional ... read more
Hello Bin,
If you have not done so already, it helps to drain the system at the lowest point. Meaning apply the shut off valve first, open the faucet at the lowest point (usually in the basement or ... read more