Install Roof Rafter Insulation

Hire a pro to install spray foam insulation.

Install roof rafter insulation.

Blown cellulose insulation will require the installation of netting over the rafter pockets. Place the plastic sheeting on top of the rolled insulation. Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss. A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel.

Learn how to prep an attic for loosefill and use the dense blow mode to get thermal performance in the eaves. Easiest insulation for layperson to install fairly inexpensive r value doesn t fluctuate as with loose fill. Consider using high density r 30 batts which are as thick as r 25 batts but fit into 2x10 framing. Unroll the material and start on one side of the loft.

R value for fiberglass or wool batts per inch is between r3 and r3 5. Don a long sleeved shirt safety glasses gloves and a dust mask to prevent irritating fiberglass from reacting with. Rolls are usually used for long expanses such as length of floor for entire attic while batts are fit between studs in attic rafters. To completely cover your attic floor with insulation out to the eaves you need to install rafter vents also called insulation baffles.

This netting serves to hold the blown insulation usually recycled newspaper inside the rafter pockets until such time that ceiling materials can be installed over the insulation. 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. Rafter vents ensure the soffit vents are clear and there is a channel for outside air to move into the attic at the soffits and out through the gable or ridge vent. You can use rigid foam panels or do as tom silva does with nearly all houses these days.

An efficient room in a roof in a new build property where over rafter insulation is not desirable. The reflective foil installation is the easiest of the processes however the thermal insulation result is the poorest. For rolled insulation place it between roof rafters. Arguably the most popular pitched roof solution installing insulation between and under the rafters uses the depth of the structural timbers to best effect.

See a demonstration of how to install owens cor. Unwrap a roll of. How to install rafter insulation 1. Its versatility is the key to its popularity whether being used to achieve.

Then feed the rolled insulation under wires and pipe if either is present. Complete coverage of the attic floor along with sealing air leaks will ensure you get the best performance from your insulation.