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Posted By: JustinThe eaves are unventilated, so in principle, a closer at the wall top isn't to stop birds/insects mice etc. Why is this specified in Kinkspan K7 data? Is it a hangover from the days when we have ventilated roofs, or is it important to fully prevent air movement for the thermal perfomance of a PU insulated wall?
Posted By: squowserockwool would not seal against (cold) air ingress no matter how tight it is jammed in surely?
Posted By: sydthebeatdoes anybody put any credence into the requirement for a cavity closer to spread the roof loading onto both masonry leaves?? in 'storey and a half' dwelling no cavity closer is a dangerous detail
Posted By: davidfreeboroughThe cavity closer will prevent air movement from cavity to roof, while tying together the two leaves, the bearing plates & the two rafter flanges.
Posted By: sydthebeatsorry, how would 9mm of osb board tie two masonry leaves together?? any tensile force will simply rip the osb apart. ?!?in your description above, it sounds like the I beam itself is required to tie the two leaves together at the top of the cavity.
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