Insulating Rafter Headers Above Outside Walls On Roof

For example if the space beneath the rafters is going to be used for a living area then you will need to insulate the roof rafters.

Insulating rafter headers above outside walls on roof.

Rigid foam board is just above the roof deck or an exterior insulation option. 3c foundation walls in heated basements full wall either interior or exterior. Insulating the roof above the rafters is known as warm roof insulation as the rafters are brought into the insulated envelope of the building. Floors above cold spaces such as vented crawl spaces and unheated garages.

How to insulate a roof. It typically has 3 variations. 3b foundation walls above ground level. All exterior walls including 3a walls between living spaces and unheated garages shed roofs or storage areas.

Bare foam board one sided sheathing board or double sided which is also reference as structural insulated panels. Also insulate 4a any. The previous four options are all used beneath the roof. Heat rises and therefore the building regulations requirements for heat loss through roofs are more stringent than those for walls.

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. Both products are high performance pir insulation boards which have been specifically designed for this type of roof construction.