Celotex Roof Insulation Between Rafters

As for insulating below the joists an insulating laminate insulation bonded to plasterboard such as celotex pl4000 or a separate rigid pir insulation board finished with a separate sheet of plasterboard can be securely fixed to the joists to provide an internal finish to the roof.

Celotex roof insulation between rafters.

Where headroom and rafter depth is limited celotex insulation may be fitted between and over the rafters. Being lightweight they do not impose significant additional loads on existing structures. Alternatively battens can be secured to the underside of the. The void created by a pitched roof can be made habitable by insulating along the plane of the roof pitch with celotex rigid pir insulation boards.

For all updates and celotex announcements since june 2017 please see the links below. Celotex offer pir thermal insulation boards in various thicknesses for new build and refurbishment applications for both the commercial and domestic sectors. Rigid polyisocyanurate pir foam insulation boards from celotex are among the most thermally efficient commonly available insulation materials on the market. Celotex polyisocyanurate pir foam insulation boards are easy to cut and handle.

The saint gobain insulation uk u value calculator gives you instant access to calculating a proposed insulation thickness and product options or giving an indicative calculation on a proposed construction detail. Depending on the specifics of the roof it may be possible to fully fill the rafter depth or in most cases leave a 25mm or 50mm air gap between the top face of the insulation and the. Once up at roof level the between rafter boards can be cut accurately to fit the rafter spacings. Register to gain access to our comprehensive technical library which contains helpful specification tools including the popular saint gobain insulation uk u value calculator bim objects and.

2 insulation between and over rafters.