Installing Rigid Insulation On Roof

Unroll roofing felt to cover the plywood on the roof and nail it in place.

Installing rigid insulation on roof.

By martin holladay april 3 2015. The plywood was fastened through the rigid foam to the rafters with long screws. One of the best benefits of rigid foam insulation is that it offers excellent thermal resistance at around double that of traditional insulation. The 1x roofing boards which also made up the ceiling of the.

Nail metal flashing along the edges of the. This type of insulated roof assembly limits thermal bridging through rafters. Flat roof insulation installation the rigid foam board insulation we used was 2 thick and came in 4 x 8 sheets. Depending on the height of your ceiling you may need to use a step ladder to install the foam.

A helpful hint for installation is to use a straight edge along the cut line to ensure the panels fit best. To install measure the foam insulation panels to the roof s dimensions. You can easily install several sheets of the insulation in only a few minutes without worrying about the security. Scope remove existing roofing and non adhered underlayment to expose roof sheathing.

Rigid foam offers tremendous boost to a home or office s r value. Install rigid insulation board in multiple layers with joints offset vertically and. Standing on the step ladder press the foam against the top of the ceiling. Apply continuous air control membrane to existing roof sheathing or implement continuous air control at roof sheathing.

Firstly you can apply it directly onto the house s concrete walls with the help of a construction adhesive that will hold it in place. Installing rigid foam insulation there s two ways you can go about with foam board insulation. Depending on the depth of your ceiling look into the various sizes available. Use a straight edge knife or utility knife to cut the panels to size.

Second the foam will keep the sheathing warm so moisture passing through the wall or roof will find no cold surfaces for condensation to occur. The furring strips should run vertically from floor to ceiling or from eaves to rafters if you are installing them on a sloped ceiling. The benefits of adding a layer of rigid foam insulation to the exterior of walls and roofs are twofold. First the foam will increase thermal performance by adding r value and minimizing thermal bridging.

After installing several layers of rigid foam above the roof sheathing these workers installed plywood above the rigid foam. How to put rigid foam insulation on the roof before putting on shingles 1. Use 2 1 2 inch deck screws to drive the furring strips into the foam and the wood framing beyond. Staples will also allow you to get a strong attachment without leaving a big hole yet easy to remove them when a repair is needed.

Put on your roofing safety harness and secure the safety rope to the top of the roof. Using staples will allow you to install the insulation easily and quickly.