How Much Insulation Do I Need In My Pitched Roof

A pitched roof is any roof that rises 4 inches or more per 12 inches.

How much insulation do i need in my pitched roof.

Flat roof there are three options available. Before doing anything else take into consideration the type of roof your garage has and plan out your insulation accordingly. The simplest and cheapest roof insulation is the classic cold. Only where a breather membrane is being used on its own without any other form of sarking or boarding over the rafters do you not need to ventilate.

This calculator is to be used as an estimating tool only. Click the button to calculate the amount of insulation in square feet and man hours wall and ceiling fiberglass insulation needed for this job. The type of insulation you should choose will depend on the type of roof you have. Warm deck cold deck or inverted roof.

Hitting amazing levels of 0 13w m will need 300mm of mineral wool or 180mm of rigid foam. Do not use a hammer and nails to fix the battens the vibrations through the roof may cause damage to the roof covering especially where the roof is old either use screwdriver and screws or a nail gun. Yes both types of roof can be insulated. A flat or low slope roof rises from 1 inch to 3 inches per 12 inches.

Once the battens are in place cut the insulation board to be a tight fit between the rafters and push it into the gap. Pitched roof there are two options. Warm or cold loft insulation. Achieving a u value of 0 20w m meaning your roof will be better insulated than your walls will need 120mm thickness of rigid foam or 200mm of mineral wool or natural insulation.

Can i insulate both flat and pitched roofs. Call us today visit our online store or contact us for assistance by email. 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 sarking membrane. What depth of roof insulation should i install.

According to the uk building regulations pitched roofs should achieve the u value of 0 18 w m2 depending on the circumstances. Input length and width of area to be insulated. Improve your home insulation with our high quality insulation products. The recommended depth of blanket style insulation glass or mineral wool for a loft is 250 to 270 mm.