If the roof has an old non-breathable roofing felt, type 1F, then the rafters will need battening out to accommodate a 50mm ventilated air space beneath the felt and PIR between rafters. TLX Silver is fitted below rafters, battened and Plasterboard added.
If there is a breathable underlay, PIR between rafters can go almost up to the top of the rafter space. TLX Silver is fitted below rafters, battened and plasterboard added.
Pitched roof solutions
Please note that these product properties are not a replacement for the manufacturer's literature and it is always recommended that TLX Insulation is consulted before specifying.
TLX Insulation hasn't formatted technical specifications for Loft Conversions yet. Request Technical Information
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