Installing Rigid Insulation On Roof

Installing rigid foam insulation there s two ways you can go about with foam board insulation.

Installing rigid insulation on roof.

Unroll roofing felt to cover the plywood on the roof and nail it in place. Once the roof demo was complete and the flat roof was cleared of any remaining debris some rotted 2x material around the perimeter of the roof was replaced. Install rigid insulation board in multiple layers with joints offset vertically and. Use 2 1 2 inch deck screws to drive the furring strips into the foam and the wood framing beyond.

The plywood was fastened through the rigid foam to the rafters with long screws. Install 1 by 3 furring strips over the insulation panels on top of each stud. 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. Rigid foam offers tremendous boost to a home or office s r value.

One of the best benefits of rigid foam insulation is that it offers excellent thermal resistance at around double that of traditional insulation. Scope remove existing roofing and non adhered underlayment to expose roof sheathing. Depending on the depth of your ceiling look into the various sizes available. 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.

Using staples will allow you to install the insulation easily and quickly. 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. The 1x roofing boards which also made up the ceiling of the.

The benefits of adding a layer of rigid foam insulation to the exterior of walls and roofs are twofold. The furring strips should run vertically from floor to ceiling or from eaves to rafters if you are installing them on a sloped ceiling. To install measure the foam insulation panels to the roof s dimensions. Nail metal flashing along the edges of the.

A helpful hint for installation is to use a straight edge along the cut line to ensure the panels fit best. 2 inch foam will probably work fine however rigid foam insulation is available in various sizes. You can easily install several sheets of the insulation in only a few minutes without worrying about the security. How to put rigid foam insulation on the roof before putting on shingles 1.

First the foam will increase thermal performance by adding r value and minimizing thermal bridging. Use a straight edge knife or utility knife to cut the panels to size. By martin holladay april 3 2015. After installing several layers of rigid foam above the roof sheathing these workers installed plywood above the rigid foam.

Apply continuous air control membrane to existing roof sheathing or implement continuous air control at roof sheathing. Standing on the step ladder press the foam against the top of the ceiling.