Insulate Metal Roof From Inside

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.

Insulate metal roof from inside.

Rigid foam boards come in different material compositions varying thicknesses and different insulating r value properties. If you are experiencing mold and mildew growth damp spots on your ceilings and walls or musty odors there is a good chance that your metal roof is not properly insulated. 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. This foam can be used on either the outside or the inside of the sheathing.

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. Likely you can also place it outside of the sheathing. Mop or paint roller. Take your foam board panels and place them on the inside of the sheathing.

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. Consider covering an existing metal roof with an elastomeric coating. You can install fiberglass insulation against the metal roof and prevent moisture problems if you cover it with a vapor barrier.

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 and try to keep from reaching the dew point add a preinstalled membrane to absorb and release the condensation as it forms with the natural weather cycle traditionally we ve insulated the roof panel to try and keep the temperature on the panel from reaching the dew point. The batts are located side to side on the rafter of the roof. Some homeowners choose to use unfaced fiberglass insulation batts.

The best material for use with metal roof insulation is in the form of foam batting. This material is applied with a mop or paint roller and has a bright white finish. This is different from the normal roll up type of insulation as it comes in panels rather than paper covered fiberglass. Cover up your sheathing with a paper wrap.