on the subject of condense
1 - Do you use 21.5 grey pushfit..or always white solvent weld
2 if you up it to 32 or 40mm to save on insulation is pushfit ok or do the rubber seals suffer and therefore solvent weld again?
1 - Do you use 21.5 grey pushfit..or always white solvent weld
2 if you up it to 32 or 40mm to save on insulation is pushfit ok or do the rubber seals suffer and therefore solvent weld again?