Osb Sheathing In Attic Space

No i m not kidding.

Osb sheathing in attic space.

I just space the wall sheathing with a nail between each row running the sheats horizontally. Use the tongue and groove feature to lock multiple boards together and improve the organization of your storage space. This occurs when the temperature of the sheathing drops below the dew point creating a thin layer of moisture on the substrate. Mold on attic sheathing.

Adding more attic ventilation will help but not much. Why would i not tell the truth. Mold growth on attic roof sheathing is a common issue in cool climates such as the pacific northwest. Benefits of radiant barrier sheathing.

The hotter it gets the better radiant barriers work. You may use a sheet rated for a 24 inch span when studs are spaced 16 inches. If you plan to finish the floor in the attic and turn the room into a living space however you should always use 3 4 inch plywood. I ve done it like this for 25 years.

If you ve got osb or plywood that doesn t swell you are in the. A cooler attic space means less heat moving to the cooler space below the attic. Osb attic decking has a convenient tongue and groove design for easy installation. 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.

Like i said before on roof sheathing i don t space anything. Select osb sheets rated for use as a wall sheathing that meet or exceed the stud spacing on your walls. Thinner plywood can flex when you walk on it even with 16. If your attic joists won t bear the weight necessary to finish out a living space but the engineer cleared them to support floor decking for light storage you can install inch plywood or.

Even with excellent airflow in an attic the temperature of the top surface layer of the insulation will only drop a few degrees. 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. In the vast majority of cases the mold growth is caused by condensation.