my builders are combining reflective bubble insulation with fibre glass , is this ok

i just need to know if this is advisable , i have had differing opinions from different builders, my current builders are great but we have been told that it is not advisable to instal reflective insulation on the attic roof with fiblre glass on top of than and covered with plaser board , advise would be welcome

Answers:

From: Nikolai Andersen

installing reflective insulation on the roof is not advisable if its the only insulation you have to install. but considering there is a fiberglass and plasterboard between the reflective insulation and the roof, makes it safer and insulation more effective.

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