ab12 Posted October 15 Share Posted October 15 Can you please advise on the most appropriate method of insulating this ceiling please. Above and between the horizontal rafters OR underneath the horizontal rafters? Current line of thinking is to have some insulation between the horizontal rafters- rockwool/PIR type and some roll type insulation above the rafters. Total depth of insulation apporx 300mm Worried about how to limit any interstitial condensation that might get trapped on the horizontal rafters and cause decay/dry rot etc. having read recent thread on this forum. There will be plentiful air on top of the insulation to wick away any condensation reaching above insulation level. Thank you for your input Link to comment Share on other sites More sharing options...
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