How To Insulate The Underside Of Your Roof

Senior engineer manager at icynene john broniek makes the case for the unvented attic assembly and why insulating the underside of the roof makes sense.

How to insulate the underside of your roof. Polyurethane spray foam metal roof insulation in order to add moisture barrier under metal roof you can spray the undersides of the roof by using a thick layer of polyurethane spray foam. The technically correct approach depends on a number of factors. If your attic is often used or perhaps you plan to convert it in the future you will need to insulate the inner surfaces of the roof. For the same reason insulation shouldn t touch the roof s underside.

Batts come in fiberglass mineral wool cellulose and cotton varieties all of which have varying r values. Whether or not there is an inner roof lining and the total thickness of the roof structure. Don t use spray foam insulation on the underside of roofs. Finally spray foam insulation is a popular choice thanks to its ability to fill tight spaces and securely insulate your home from heat transfer as well as insects and mold.

Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. Batt insulation can be added to the underside of the roof between rafters and a layer of batt or loose insulation can be added over the attic flooring. Check here for energy star recommendations. Once air leaks have been addressed you can add insulation.

The quest for greater energy efficiency in buildings has led to increasing interest and need for insulation improvements in hvac equipment more airtight construction new materials and assemblies. Warmcel cellulose insulation made from recycled newspaper fibres is ideal for large large loft spaces. It will help you to eliminate problems that may come when the house becomes extremely cold in the winter and terribly hot in the summer. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow.

Insulating the pitched roof. It can trap moisture around the timber stops tiles or slates being reused in the future and prevents inspection of the underside of the roof. You can then install.