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.

Rigid foam installation after the roof deck is ready the rigid foam insulation is installed. Rigid foam insulation also known as insulating boards provide high r values. 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. Install nailbase for cladding.

A helpful hint for installation is to use a straight edge along the cut line to ensure the panels fit best. 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. Depending on the type of insulation you choose and the desired r value you want for your facility you may need to build up a few layers of insulation. Rigid insulation layers exterior to existing roof sheathing must provide sufficient thermal insulation r value to control condensation risk see climate specific guidance.

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. It will help you to eliminate problems that may come when the house becomes extremely cold in the winter and terribly hot in the summer. Eps is the most vapor permeable of the three types. Nail it around the edges with roofing nails.

Install rigid insulation board in multiple layers with joints offset vertically and horizontally between adjacent layers. Install it anywhere from the roof to the foundation. The r value is a measurement of the heat loss and heat gain. They keep your home at a comfortable temperature without the need to crank your heat.

At r 4 it also has the lowest r value per inch. 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. In other words rigid foam can be applied on walls foundations and roofs and works great for both retrofits and new constructions. Rigid foam offers tremendous boost to a home or office s r value.

Use a straight edge knife or utility knife to cut the panels to size. Rigid insulation is one of the best tools to reduce your energy costs. 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 2 1 2 inch deck screws to drive the furring strips into the foam and the wood framing beyond.