Insulate Tin Roof Without Decking

It is possible to insulate from below as you suggest with rigid polystyrene insulation.

Insulate tin roof without decking.

Some homeowners choose to use unfaced fiberglass insulation batts. T he problem with the insulation against the sheathing expands. Lay insulation on paper liner one of the most common mistakes that diy homeowners make with their metal roof is that they do not lay down any type of paper wrap on the sheathing. You can install fiberglass insulation against the metal roof and prevent moisture problems if you cover it with a vapor barrier.

The moisture is held in place by the insulation which allows for damage to the framing and other building components. Talking about metal roof insulation this thing is one of the most challenging things people work in this field is facing it demands and requires excellent skill and expertise which you may only get from a reputable roofing contractor. The problem arises with moisture. In this article we are going to explore both financial and technical aspects when it comes to looking for the best method to insulate the metal roofing.

This will provide an air space above the foam insulation to improve ventilation on the underside of the metal roofing. 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. If there is a roof leak the insulation will be damaged by the water leaving you with less insulating value.