Pitched Roof Rafter Insulation

Insulating the rafter space will give you a warm loft.

Pitched roof rafter insulation.

Both products are high performance pir insulation boards which have been specifically designed for this type of roof construction. An additional advantage is the excellent pressure and gas tightness of the entire system. Sheet insulation fitted between the rafters the thicker the better but the size of rafter may limit the thickness possible once an allowance has been made for the required 50mm 2 inch air gap. This means insulating between or below the sloping beams that form the construction and support a sloping roof.

Firstly just to make it clear when we are talking about rafter level we mean the timbers that support the pitched roof. Arguably the most popular pitched roof solution installing insulation between and under the rafters uses the depth of the structural timbers to best effect. The rafters are joined together by a horizontal ridge board at the top and tied together by ceiling joists at the bottom. Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building.

Installation of over rafter double layer insulation on a pitched roof the assembly of two layers of insulation panels provides perfect protection against cold and heat. In this blog post we explore some of the options available. An efficient room in a roof in a new build property where over rafter insulation is not desirable. Its versatility is the key to its popularity whether being used to achieve.

Insulating a pitched roof space a guide to insulation inside a pitched roof. 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. 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. The roof will typically be insulated above the rafter line creating what is most commonly known as a warm roof.