Insulate Metal Roof From Inside

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.

Insulate metal roof from inside.

Both materials make a great physical barrier between the interior building and the metal roof. Metal roof insulation increases the temperature of the inside surface of the ceiling. This foam can be used on either the outside or the inside of the sheathing. This in turn prevents moisture condensation on the metal roof.

You can install fiberglass insulation against the metal roof and prevent moisture problems if you cover it with a vapor barrier. Some homeowners choose to use unfaced fiberglass insulation batts. Condensation forms on the inside surface of the metal roof panels when the warm moist air rises up from the ground and comes in contact with the cold roof panels. Rigid foam boards come in different material compositions varying thicknesses and different insulating r value properties.

Fiberglass batts or glass mineral wool metal roof insulation the most common material used for an insulating metal roof is fiberglass batts or glass mineral wool. Mop or paint roller. Take your foam board panels and place them on the inside of the sheathing. Likely you can also place it outside of the sheathing.

The best material for use with metal roof insulation is in the form of foam batting. Cover up your sheathing with a paper wrap. The insulation board is installed to provide a buffer zone to allow for a gradual temperature change to occur thus minimizing the formation of condensation. This material is applied with a mop or paint roller and has a bright white finish.

Below are some tips that will help you achieve your desired metal roof insulation and materials you need include foam board paper wrap staples and panels. Consider covering an existing metal roof with an elastomeric coating. The batts are located side to side on the rafter of the roof. In warm climates zones 1 through 4 low density open cell spray foam insulation is the typical choice since it is vapor permeable and will allow drying of the exterior sheathing and roof framing if they happen to get wet via diffusion into the interior of the building.