Osb Sheathing In Attic Space

Mold on attic sheathing.

Osb sheathing in attic space.

Why would i not tell the truth. I ve done it like this for 25 years. This improved energy efficiency makes thermostat radiant barrier the ideal choice for new homes additions and renovations in warm to hot climates. Enjoy a clean look and increase the usable square footage of your attic by multiples of 8 sq.

Nick an owner builder pal of mine helped me put up the insulation and sheathing over the course. Osb attic decking has a convenient tongue and groove design for easy installation. Like i said before on roof sheathing i don t space anything. In the vast majority of cases the mold growth is caused by condensation.

Thermostat radiant barrier sheathing reflects up to 97 of the sun s radiant heat from a home s attic and can help lower attic temperatures by up to 30 f. I just space the wall sheathing with a nail between each row running the sheats horizontally. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. Open or closed cell spray foam is applied to the underside of the roof sheathing and additional fiberglass or cellulose insulation is blown in as a cost saving method for meeting high insulation requirements and filling in the cavity space between the rafters to the ceiling deck.

No i m not kidding. If you ve got osb or plywood that doesn t swell you are in the. The quick pace has proven to be quite auspicious as the typical summer monsoon storm systems begin to play out in southwestern new mexico. Even with excellent airflow in an attic the temperature of the top surface layer of the insulation will only drop a few degrees.

Select osb sheets rated for use as a wall sheathing that meet or exceed the stud spacing on your walls. You may use a sheet rated for a 24 inch span when studs are spaced 16 inches. Adding more attic ventilation will help but not much. Installing the attic insulation and roof sheathing went much faster than i had anticipated.

Without the foil layer the osb sheathing will absorb heat and radiate it into the attic space in the summer or outside during the winter. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. I don t space decking either.