Replace Insulation In Pole Barn Roof

One or two inch insulation can be placed on the exterior of the building underneath the steel.

Replace insulation in pole barn roof.

In a non insulated pole barn there will be a large amount of heat transferred in and out. One is to remove the panels remove the old insulation and replace it with new insulation. Above the roof trusses this choice comes with new construction or a roof replacement. When the old panels are removed new larger fasteners are used to put it back together.

Weighing what you have to start with my recommendation is to spray three inches of closed cell foam insulation below your roof sheathing. R values indicate the insulative properties of the material used. Depending on the type of barn your requirements may vary. Insulating a barn roof is very similar to insulating any other kind of building.

Steel roofing is a highly conductive material in terms of heat transfer. To repair it there are two primary methods. Pole barn or post frame buildings are typically constructed using wood framing with steel roofing and siding. This will provide a greater r value than r19 batts and provides a vapor barrier.

The fiberglass insulation used in this method can be as high as r 13 insulation thickness on single layer systems range from r 7 to r 30. The higher the r value the higher the insulation capacity. If the insulation has aged like this the roof would benefit from new fasteners. Here the insulation is placed between the inner purlin supported by the truss and the outside metal panel.

It ranges from r 5 to an r 16 value depending on the type. Closed cell spray foam insulation would need to be added in the area closest to eave sidewalls.