Rigid Foam Insulation Roof Installation

Polyurethane spray foam metal roof insulation in order to add moisture barrier under metal roof you can spray the undersides of the roof by using a thick layer of polyurethane spray foam.

Rigid foam insulation roof installation.

Install rigid insulation board in multiple layers with joints offset vertically and horizontally between adjacent layers. 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. Rigid foam offers tremendous boost to a home or office s r value.

You can even place it under the foundation slab. Nail it around the edges with roofing nails. Rigid foam insulation also known as insulating boards provide high r values. Rigid insulation is one of the best tools to reduce your energy costs.

In other words rigid foam can be applied on walls foundations and roofs and works great for both retrofits and new constructions. Use 2 1 2 inch deck screws to drive the furring strips into the foam and the wood framing beyond. Eps is the most vapor permeable of the three types. Install 1 by 3 furring strips over the insulation panels on top of each stud.

The purpose of the requirement that rigid foam installed above roof sheathing meet certain minimum r values is to ensure that the roof sheathing stays warm enough during the winter to avoid moisture accumulation and possible sheathing rot. Not only does it provide high r values but foam board insulation is also easy to install lightweight and can be used in any room of your home. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance. Install nailbase for cladding.

They keep your home at a comfortable temperature without the need to crank your heat. The furring strips should run vertically from floor to ceiling or from eaves to rafters if you are installing them on a sloped ceiling. Use a straight edge knife or utility knife to cut the panels to size. Start at the bottom of the roof and place the first piece of rigid foam insulation against the metal flashing starting at the center line.

The r value is a measurement of the heat loss and heat gain. All three types of rigid foam insulation expanded polystyrene eps extruded polystyrene xps and polyisocyanurate are suitable for use on the exterior of walls and roofs though they do not perform equally. Install it anywhere from the roof to the foundation. Rigid foam installation after the roof deck is ready the rigid foam insulation is installed.