How To Blow Insulation Flat Roof

Move across the attic until you ve hit your desired height at every point.

How to blow insulation flat roof. Flat roof with 10 inch rafters for the subroof and space between rafters filled with insulation about 16 inch airapace and then 12 inch rafters for the outer roof w tongue groove planking and two layers with water tight tar paper sheeting. Cold roof systems are highly inadvisable as insulation from the inside will inevitably lead to the formation of condensation. Composite insulation reduces the need for a cover board when applying different membrane roof coverings. With a flat roof this issue does not arise but the u value constraint and the amount of insulation needed is just the same.

Step 2 drill holes. Step 5 finish the. Composite insulation works in flat and low sloped roofs with a variety of roof coverings. There are many different types and installation methods out there along with a lot misinformation about which products offer the greatest energy savings.

Using a blowing agent the foam material is expanded which then creates a high level of thermal resistance. This is placed between the non organic and organic felt within the flat roof. Then pivot in place and do the same thing to the other side. Step 3 add the blown insulation.

This is then covered with a further weatherproofing layer. Cold roof a very bad idea. Step 1 find the studs. For the center areas hold the hose level and blow in insulation evenly until you ve reached your level lines photo 6.

How to install blown flat roof insulation. Locating the studs will help you determine. Step 4 seal the holes. With a flat roof however this becomes a major concern.

The type that is right for your flat roof insulation job depends upon the state of the roof expert opinion on the best type and your budget. Before you begin locate the studs in the ceiling and mark them on both sides. Here we share the most common mistakes people make when installing flat roofing insulation. Blow in insulation until the hopper is empty.

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. To produce a hot roof rigid insulation is fitted outside above the weatherproofing. There are air inlet outlet around the overhang.