How To Insulate The Underside Of Your Roof

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.

How to insulate the underside of your roof.

Batts come in fiberglass mineral wool cellulose and cotton varieties all of which have varying r values. The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. Warmcel cellulose insulation made from recycled newspaper fibres is ideal for large large loft spaces. Depending on your climate an r value between 38 and 60 is optimal.

Don t use spray foam insulation on the underside of roofs. 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. You can then install. In addition to installing the foam board on the underside of the roof deck you can attach it to the bottom edges of the rafters in the same manner you would hang drywall.

Don t use the wrong materials. 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. Whether or not there is an inner roof lining and the total thickness of the roof structure. Check here for energy star recommendations.

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. 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. 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.

Insulating the pitched roof. Once air leaks have been addressed you can add insulation. The technically correct approach depends on a number of factors.