Lenins2ndCat, 2 years ago This is not true? L1A, L1B, L2A, and L2B exceed american insulation regulations by a huge amount, and they exceed the EU regulations as well. I did some roofing once upon a time.
This is not true? L1A, L1B, L2A, and L2B exceed american insulation regulations by a huge amount, and they exceed the EU regulations as well. I did some roofing once upon a time.