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Hi Very very best, regardless of cost to insulate a skillion roof. Measurements in photos. Is the top timber beam enough for the air gap? I’ve looked at space blankets that don’t look very well made and thermal- liner & break. Not sure if the break is worth extra for a timber house roof. ? Also besides this product being stronger does it actually reflect more sun than plain staking?
Also will 90ml batts fit correctly? Thanks (getting a new roof)
Welcome to the Bunnings Workshop community @needadvice. It's sensational to have you join us, and many thanks for your question about insulating a roof.
Any air gap is better than none at all. Typically, insulation batts offer the best thermal insulation out of the available options, and you'd only not use them if you didn't have the space to fit them. In your 90mm of height, you can easily fit 90mm thick insulation batts, which will generally give you an R2.5 rating.
Please let me know if you have any questions.
Mitchell
Yes, a thermal liner will typically provide a better break than sarking, @needadvice. Sarking is predominantly used to capture water that has leaked through your roof and divert it to your eaves and out of the roof space. It has very little insulation value.
Mitchell
Hi @needadvice,
A thermal liner doesn't provide much insulation by itself. Insulation batts provide R2.5, whereas thermal liner provides R0.1. Enclosing the ceiling with Hardieflex would likely provide better insulation.
Mitchell
