D defrost #1 Member · 107 posts 11 Jan 2015 at 10:55 PM defrost Member 107 posts 11 Jan 2015 at 10:55 PM #1 Hello! I have a conservatory according to this drawing with a polycarbonate roof. I am planning to insulate the roof with 25cm of insulation and lay a proper felt roof. My question is what dimension the primary beam should have?
Hello! I have a conservatory according to this drawing with a polycarbonate roof. I am planning to insulate the roof with 25cm of insulation and lay a proper felt roof. My question is what dimension the primary beam should have?
Mikael_L #2 Member · 53 780 posts 27 Jan 2015 at 7:56 AM Mikael_L Member 53,780 posts 27 Jan 2015 at 7:56 AM #2 But it's already on the drawing? 66x225 L40 ...
