Rigid Foam Board Under Metal Roof

Rigid insulation is one of the best tools to reduce your energy costs.

Rigid foam board under metal roof.

Avoids nails or screws which could penetrate the metal roof and cause leaks. It can lie down perfectly under the metal roofing without having to deal with the hassle. Insulating with spray foam insulation. Rigid foam insulation also known as insulating boards provide high r values.

Install it anywhere from the roof to the foundation. You can always install this foam on the inside and outside of the sheath. Use rigid foam insulation to cover wider spans of roof sheathing between joists. Cut each sheet to the desired size using a utility knife then fasten it in place using staples or adhesive.

Rigid board made from fiberglass would be the best option for roofs and basements as the high insulation rating allows it to insulate the home better than say loose fill or batt and blanket. Fiberglass is also one of the preferred materials for metal and steel buildings and homes. It can be touted that foam batting material is the best one to pair with metal roof insulation. The insulation you choose will be highly dependent on your budget.

Rigid foam boards come in different material compositions varying thicknesses and different insulating r value properties. Basically speaking ignoring sub insulated roofs which are a special case with rigid foam board insulation directly under the metal roofing the roofing needs proper support to be able to handle snow ice loads wind loads and walking on during installation cleaning and maintenance. It is not the normal insulation type that can be rolled up.