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Posted By: peacebabe68I have read on here it is best to insulate the gable ends on both the inside and out and up inbetween the roof joists.
Posted By: peacebabe68What do you think about leaving the 2 course gap at the bottom?
Posted By: Nick ParsonsIndustry standard eaves trims are not exciting, and 'a large amount of silicone' does not cut the mustard in my view. Either:- Consider a system which keeps the existing roof-line and uses an aluminium 'top-cover-and-gutter-all-in-one-go' or- Ask this, or A.N.Other installer to work to your extended roof-line and to forget their inverted U-section 'cap'.Is yours the cavity-insulated house? If so, base case U value 0.55W/m2K approx, so R value 1.81.Assume the EPS is graphite (e.g. BASF Neopor) with lambda of, say, 0.032W/mK.Thus 0.06/.032 = R =1.875Plus base-case R value of 1.81Total R = 3.6851/3.685 = U = 0.27W/m2K.At least you don't get the same (alleged) problem with shrinkage as phenolic.
Posted By: fostertomGiven that you're contemplating some messing with the roof, to extend the eaves, how about biting the bullet, taking all the tiles off, running the 'EWI' right up and over the sarking boards, batten/crossbatten over and replace tiles but higher up? If ever you think tiling/battens/felt may need attention, do it now!
Posted By: VictorianecoEWI on a cavity wall? How will you stop the air circulating in the cavity? Wouldn't most of the heat 'retained' be blown out anyway?
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