How To Insulate A Corrugated Roof

Cut panels on roof.

How to insulate a corrugated roof.

Compared to the fiberglass batts this insulation is much better. Pre drill the holes and use 10 by 2 in 25 4 by 5 1 cm screws with polycarbonate washers. Polyurethane spray foam metal roof insulation. Financially speaking this spray is a great option especially when you need to renovate your roof after the application.

If your replacing the roofing shets why not just order insulated sheets. Most of the roofing sheet companies will do you insulated sheets insulation thickness varies between 20mm and about 200. This reduces the need to go up and down the ladder for tools pieces of insulation and making measurements. From bottom to top of roof system wood sheathing slats vapor barrier rigid foam insulation 3 x 1 or 2 x 2 rigid foam insulation wood sheathing self adhered membrane corrugated metal roofing.

Mesh stops the insulation from sagging. Make all cuts to the foam panels on the roof for more accurate cuts and quicker placement. Insulating a new metal roof step 1 install plywood or oriented strand board osb to act as structural roof sheathing. It is a corrugated asbestos roof with wooden joists holding it up.

Continue across the roof until it is completely covered lapping over the previous panel by at least 2 5 inches 6 4 cm minimum. Lay the plywood perpendicular to the roof joists and fasten it in place using galvanized or stainless steel roofing nails. This way you ll hopefully leave a good vent space between the insulation and the corrugated sheets the sheet metal itself will be stone cold and will attract condensation which will need to be vented to keep it and the joists dry. Fix some galvanised mesh to the rafters batens.

Then filling any gaps left from fitting with expanding foam. Step 2 pull the insulation so that it extends over the top plate of the wall. Lay the insulation loosely over the purlin or truss structure the horizontal framework of beams helping to support the roof. Leave gaps between panels.

Not the cheapest option but easiest. Adjust the lap so that the last panel completes the coverage without making a cut lengthwise. I was thinking of getting some 50mm kingspan board cutting it and pushing it between the rafters. Before doing any work with the metal roof insulation you should have it brought up onto the roof.

Move onto next section. The panel attachment in combination with the purlin or truss structure will secure the insulation. The spray can be basically applied on top or bottom of the metal roofing surfaces. I want to insulate my garage roof to help stop the condensation.