Insulation Between Attic Rafters

Place the plastic sheeting on top of the rolled insulation.

Insulation between attic rafters.

This limits the maximum thickness of the insulation between the rafters to between 50mm and 175mm. The will hold open an air gap of approximately 1 inch to allow airflow past a layer of insulation. This generally would not be a sufficient thickness to achieve the u values required to meet building regulations and more insulation would need to be added. Push the insulation in place between the rafters but be careful not to compress the material.

Check out our how to video at the link below. Https youtu be w4mkphzmqxw contact us restorat. 2d extend insulation into joist space to reduce air flows. If your attic is going to be converted into livable space then you will need to insulate the roof rafters.

Common rafter depths range from 100mm to 200mm. 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. Time to get the insulation finished and get this place warm. Unlike solid insulation products that require careful measurement cutting and fitting spray foam can cover even the most uneven surface instantly.

In finished attic rooms with or without dormer insulate 2a between the studs of knee walls 2b between the studs and rafters of exterior walls and roof 2c and ceilings with cold spaces above. The ones i ve used are made of styrofoam and iirc they cost around 2. If you re considering turning your attic into conditioned storage or living space it s worth changing tactics to insulate between the rafters and wall joists instead of the floor. For rolled insulation place it between roof rafters.

You can buy air ducts that staple to the inside of your roof above the eave vents and fit between the rafters. Hire a pro to install spray foam insulation. You can use rigid foam panels or do as tom silva does with nearly all houses these days. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place.