Install Roof Rafter Insulation

Don a long sleeved shirt safety glasses gloves and a dust mask to prevent irritating fiberglass from reacting with.

Install roof rafter insulation. Its versatility is the key to its popularity whether being used to achieve. Easiest insulation for layperson to install fairly inexpensive r value doesn t fluctuate as with loose fill. Staple the foil to the underside of the rafter ensuring as you roll out the material you staple to all the 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.

Blown cellulose insulation will require the installation of netting over the rafter pockets. Consider using high density r 30 batts which are as thick as r 25 batts but fit into 2x10 framing. Attach baffles to the bottom of the roof sheathing the plywood or solid wood strips onto which roofing material. Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss.

An efficient room in a roof in a new build property where over rafter insulation is not desirable. Unwrap a roll of. Then feed the rolled insulation under wires and pipe if either is present. 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.

Place the plastic sheeting on top of the rolled 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. See a demonstration of how to install owens cor. You can also add rigid foam insulation under the rafters which adds r value and eliminates thermal bridging through wood rafters.

A vent baffle should be installed between the insulation and the roof decking to maintain the ventilation channel. 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. Complete coverage of the attic floor along with sealing air leaks will ensure you get the best performance from your insulation.

How to install rafter insulation 1. Learn how to prep an attic for loosefill and use the dense blow mode to get thermal performance in the eaves. 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. Rolls are usually used for long expanses such as length of floor for entire attic while batts are fit between studs in attic rafters.

Hire a pro to install spray foam insulation. R value for fiberglass or wool batts per inch is between r3 and r3 5.