Roof Rafter Insulation Boards

This roof type will require a breathable membrane like kingspan nilvent to be fitted above the insulation.

Roof rafter insulation boards.

Both products are high performance pir insulation boards which have been specifically designed for this type of roof construction. Insulating the rafter space will give you a warm loft. 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.

Our insulation solutions for warm roofs maximise both space and thermal efficiency whilst also contributing to acoustic performance. This means insulating between or below the sloping beams that form the construction and support a sloping roof. To create a warm pitched roof insulation such as kingspan kooltherm k7 pitched roof board should be fitted between and over the rafters. Once up at roof level the between rafter boards can be cut accurately to fit the rafter spacings.

Uncompressed size 610 x 402 x 60mm. Rigid foam board is just above the roof deck or an exterior insulation option. It typically has 3 variations. Insulating a pitched roof above the rafters is the common method chosen for new builds and re roofing existing detached buildings as it provides superior thermal performance for the building.

If 180mm is to be installed then 100mm board might be introduced between the rafters there has to be a minimum 25mm air gap between the insulation and the underside of the tiles or slates with an 80mm board running across the rafters. Squeeze to fit for easy installation between rafters or floor joists. There will also be kooltherm k7 pitched roof board between the rafters image credit. Being lightweight they do not impose significant additional loads on existing structures.

Insulation is friction fitted between rafters with the option to underline the rafters with a layer of thermal laminate to further enhance thermal performance. Full installation instructions included. The construction build up for this can be seen on our online u value calculator. Made from flame retardant material.

The previous four options are all used beneath the roof. Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building. Reduces heat loss and energy bills. Pack of 3 total cover is 0 74m.

Kingspan with a warm roof the usual process is to split the insulation into two layers. For this method of pitched roof insulation we recommend using quinn therm qr roof insulation boards between the rafters and quinn therm ql kraft insulation boards below the rafters. Fits rafter or joist spacings of between 320mm and 395mm. As this requires fitting insulation above the rafters the roof covering will have to be removed in order to fit the insulation.