Attic Sheathing Insulation

Box out light fixtures.

Attic sheathing insulation.

Here are four approaches i recommend you investigate for insulating your attic. Install insulating sheathing above the roof deck on existing homes. Mold growing on the sheathing in your attic is a serious problem that shouldn t be ignored. Featuring integrated moisture air and thermal protection zip system r sheathing completely reimagines traditional wall assemblies by streamlining exterior water air and thermal management.

The presence of mold inside your home even if it s in an unused place such as the attic can cause. There are at least two good reasons why this approach makes more sense than installing the insulation under the roof sheathing. This retrofit assembly is appropriate for homes with conditioned attics or where the retrofit is intended to create a conditioned attic. Mold on attic sheathing.

It creates a breeding ground for mold and mildew and ruins the air trapping pockets that block heat flow. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. Nick an owner builder pal of mine helped me put up the insulation and sheathing over the course. The attic or rafter assembly meets one of the following conditions regarding the air permeability of the insulation directly under the structural roof sheathing.

Zip system r sheathing is the simple all in one structural panel with built in exterior insulation. There are lots of different ways to insulate this type of roof but one of the best methods calls for the installation of rigid foam insulation above the roof sheathing. If there is a roof leak the insulation will be damaged by the water leaving you with less insulating value. The quick pace has proven to be quite auspicious as the typical summer monsoon storm systems begin to play out in southwestern new mexico.

This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. Apply a 2 inch layer of spray foam insulation r 10 to r 12 directly to the interior surface of the roof sheathing. Remove existing roofing and non adhered underlayment to expose roof sheathing. Water is insulation s enemy.

Installing the attic insulation and roof sheathing went much faster than i had anticipated. Insulation is applied in direct contact with the underside of the structural roof sheathing. The problem arises with moisture. In the vast majority of cases the mold growth is caused by condensation.

This will keep the surface warm and help minimize condensation. From the sound of it the roof has already been framed and that limits options. T he problem with the insulation against the sheathing expands.