How To Install Rigid Insulation On Roof

Insulated roof assemblies can be vented or unvented.

How to install rigid insulation on roof. Rigid foam offers tremendous boost to a home or office s r value. There are several ways you can do to insulate the metal roof. It can be touted that foam batting material is the best one to pair with metal roof insulation. It is not the normal insulation type that can be rolled up.

Standing on the step ladder press the foam against the top of the ceiling. Depending on the depth of your ceiling look into the various sizes available. Rigid foam boards come in different material compositions varying thicknesses and different insulating r value properties. A helpful hint for installation is to use a straight edge along the cut line to ensure the panels fit best.

Use 2 2 inch lumber for the studs and 2 3 inch lumber for the top and bottom plates. The furring strips should run vertically from floor to ceiling or from eaves to rafters if you are installing them on a sloped ceiling. Insulating a metal shed roof with rigid foam can be done one of three ways by laying the board prior to applying the roof by removing the existing roof and installing new foam board or by insulating the existing metal roof from the inside. Tips to install metal roof insulation use foam batting.

Use a straight edge knife or utility knife to cut the panels to size. To install measure the foam insulation panels to the roof s dimensions. 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.

Then cut your insulation panels to fit between the furring strips. Secondly and this is the best way you can install a drywall to frame the wall before applying foam board insulation. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing. Use 2 1 2 inch deck screws to drive the furring strips into the foam and the wood framing beyond.

2 inch foam will probably work fine however rigid foam insulation is available in various sizes. Putting an insulation layer could help you to stay away from this issue.