Loft insulation


Postby JHJS » Wed Oct 03, 2012 11:59 pm

I want to increase the depth of my loft insulation to 270mm, however, when I've looked at what's already there, it appears that the joists are 2 and a half inches deep with 2 inches of insulation laid between them. Everything I've read suggests that joists are always 4in deep? Do I need to raise the level of the joists, or can I put 4in insulation between the joists and then more at right angles across it? Would I be better leaving the original insulation or replacing it?
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Postby welsh brickie » Thu Oct 04, 2012 3:04 pm

2 inch deep joists ? anyway lay the insuation ontop and across the joists leave in whats there.
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