Can I recess downlighters into PIR insulation panels?

Category: DIY

General best practice in such scenarios would be to include for a battened service zone to avoid compromising the performance both the insulation and the vapour control layer. The required depth of this “void” should be determined by the requirements of the specific lighting manufacturer. 

If this is not suitable and the lighting needs to be recessed, then advice should be sought from the downlighter manufacturer.