Pitched Roof Insulation For Loft Conversion

Currently building regulations for loft conversions dictate that the u value of the roof must be 0 18w m2 or lower.

Pitched roof insulation for loft conversion.

Insulating pitched roof for loft conversion looking to have loft insulated so it can be used as a room to meet building regs it would need at least 100mm of the pir between rafters plus another 25mm or so on top is that right. This equates to a thick 270mm layer of fibre or wool insulation about 175mm of rigid board insulation or around 125mm of high performance spray foam. It is also an expensive option unless you are already having the roof covering replaced. Check out our how to video at the link below.

Time to get the insulation finished and get this place warm. Insulation batts ready to go in loft conversion if you do not have the height in the room to insulate under the rafters then insulating above the rafters by taking off the roof tiles and insulating beneath is an option. 14 may 2019 messages. I am looking to start insulating my loft conversion project.

Surly pir board is pir board. Existing roofs and shared roofs for houses with shared roofs and where the roof covering is not being replaced we suggest insulating between and under the rafters. Pitched roof insulation loft conversion discussion in floors stairs and lofts started by shedifice 21 aug 2019.