Under Rafter Roof Insulation

Time to get the insulation finished and get this place warm.

Under rafter roof insulation.

These devices allow air to circulate under the roof a necessity for prevention of mold and mildew. When insulating a pitched roof at rafter level there are a number of key design considerations which will affect the build up of the roof and the choice of insulation. Unlike solid insulation products that require careful measurement cutting and fitting spray foam can cover even the most uneven surface instantly. Look for water stains on the roof sheathing or damp or moldy spots on attic joists and existing insulation as a clue to where leaks might be.

Firstly just to make it clear when we are talking about rafter level we mean the timbers that support the pitched roof. Check out our how to video at the link below. Polyurethane or polystyrene spray foams can provide thorough coverage to roof rafters and attic walls in much less time than is needed for other materials. For a ventilated roof fix battens on the inside of the rafters 50mm from the underlay to leave vented air spaces.

Arguably the most popular pitched roof solution installing insulation between and under the rafters uses the depth of the structural timbers to best effect. Internal restrictions like maintaining sufficient head height can mean that fixing the insulation between and under the rafters is not an option either. But spray foam insulation used at the underside of the roof deck would need to be covered by a thermal barrier and intumescent coatings are commonly used. Joists are the flat horizontal beams at ceiling level and will be the subject of another blog post in the future.

Install underlay above the rafters. Its versatility is the key to its popularity whether being used to achieve. It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. Https youtu be w4mkphzmqxw contact us restorat.

An efficient room in a roof in a new build property where over rafter insulation is not desirable. Box out light fixtures. For an un ventilated roof construction a vapour open underlay or breather. Measure the space between the rafters where the insulation.

In this blog post we explore some of the options available. Attach the baffles into each rafter bay using a power screwdriver and the screws that come with. Water is insulation s enemy. Where the benefits of over rafter insulation want to be enjoyed while still creating a useable room in the roof space it s possible to insulate over and between the rafters.