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Jesus, the vapour barrier is the most important part of s cold roof?? Is this forum for real??

Hi thanks for the reply, the felt has already been laid, can I still fit mushroom vents, 4x 1" holes have been cut towards the top of each joist 100 mm aoart and would fit vents every other space, also have taped the kingspan to the joists to give a better vapour barrier, then still have to put...

god this really is poor see ya

Jesus should of tried screwfix. Is every ssleep

Also 50mm foil backed insulated board still to go up

Also we've got 100mm of kingspan between ceiling joists very tightly in most places I have taped all joints including the joists is that correct?

Hi thanks for the reply, we have already laid the felt How easy is if to put in vents now??

-------------------------------------------------------------------------------- sorry just to add there is a 50mm air gap between the kingspan and board Read more: //www.diynot.com/forums/building/venting-a-cold-flat-roof.371659/#2832893#ixzz2aDq6TKVf

sorry just to add there is a 50mm air gap between the kingspan and board

we are rebuilding a timber framed extension (not brick) 3.6m x 3m, clad in weather board, roof is obs board covered with 3 layers of felt, 100mm kingspan between joists and have 50mm foil backed board to go under(not up yet), we have a vented soffit board but there is no vent at the highest...

we are rebuilding a timber framed extension (not brick) 3.6m x 3m, clad in weather board, roof is obs board covered with 3 layers of felt, 100mm kingspan between joists and have 50mm foil backed board to go under(not up yet), we have a vented soffit board but there is no vent at the highest...