Insulating A Shop Roof

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.

Insulating a shop roof.

Staple plastic or foam baffles to the roof sheathing near the eaves to keep the material away. Lay the plywood perpendicular to the roof joists and fasten it in place using galvanized or stainless steel roofing nails. Use duct tape to cover the edges of the foam insulation so that you will greater protection against moisture. Now cover all the roof of your shed with foam insulation but do not overlap.

Place the plastic sheeting on top of the rolled insulation. Remember the duct tape will also prevent leaks and enhance the efficiency of the foam insulation. Insulation built into the product with a thermal insulation value of 24. Then feed the rolled insulation under wires and pipe if either is present.

Typical recommendations for exterior walls are r 13 to r 23 while r 30 r 38 and r 49 are common for ceilings and attic spaces. If your budget allows we recommend combining one of the other insulation materials with some type of radiant barrier bubble insulation. Each layer is composed of polyethylene bubbles that function as an additional thermal barrier that helps stop condensation. For rolled insulation place it between roof rafters.

Insulating a new metal roof step 1 install plywood or oriented strand board osb to act as structural roof sheathing. Depending on where you live and the part of your home you re insulating walls crawlspace attic etc you ll need a different r value. Make sure it is flush against the wood as even a 1 inch gap can cause a 20 percent heating loss. If you have the money professionally sprayed on foam insulation is the absolute best option but is very expensive.

The airflow from the soffits to the ridge vent keeps the roof cool and prevents ice dams and the material will block that flow. For the same reason insulation shouldn t touch the roof s underside. This type of insulation should be covered since it is very flammable. Common types are radiant barriers insulation blankets batts blown insulation and rigid boards.