Insulate Between Roof Rafters

Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss.

Insulate between roof rafters.

Place the plastic sheeting on top of the rolled insulation. Install ventilation baffles into the space between the rafters before you install the insulation usually by stapling into place. Then feed the rolled insulation under wires and pipe if either is present. For rolled insulation place it between roof rafters.

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. An efficient room in a roof in a new build property where over rafter insulation is not desirable. Ceiling insulation refers to any type of insulation installed within the floor nearest to the roof structure of the home. This limits the maximum thickness of the insulation between the rafters to between 50mm and 175mm.

Roof insulation refers to the practice of installing insulation on the roof slope both above and below the rafters. The benefits of insulating a building around the outside protecting the structure and effectively creating a tea cosy effect are well publicised. When it comes to pitched roofs however adding a thick layer of insulation to the rafters can result in a depth of roof construction that may not suit every site meaning over rafter insulation sarking only is not a viable option. Its versatility is the key to its popularity whether being used to achieve.