Foil Faced Insulation For Basement Walls

Best methods for insulating basement walls.

Foil faced insulation for basement walls.

Mostly paper faced insulation is the best choice for neophytes in insulation installations. I have insulated my basement so far with closed cell rgid boards 1 5. Faced insulation products not only use paper they can also use aluminum foil vinyl and even aluminum paper. I have a concern about insulating my basement.

Basement walls should be insulated with non water sensitive insulation that prevents interior air from contacting cold basement surfaces the concrete structural elements and the rim joist framing. Understanding when and how to use faced or unfaced insulation in walls is critical. Spray foam is also an option but usually a lot more expensive than foam boards. Polyiso provides one of the highest r values per inch of any rigid insulation r 6 at 1 inch.

Basements are a challenge because of high moisture levels and cooler temperatures. It provides an r value of 6 per inch of thickness and often comes foil faced to help reflect radiant heat. Now do i do the floors next with the same r igid boards plywood on top then my studded walls filled with pink insulation or do i put my studded walls after my rigid foam on the walls and then the floors with rigid foam. Johns manville aptm foil faced insulation sheathing board is an excellent choice for insulating interior below grade walls.

You may be allowed to leave foil faced insulation uncovered check with your local building department. Attach the tongue and groove insulation boards to the concrete wall with adhesive. Basements provide for a very challenging insulation problem. Follow with a 2x4 frame wall and insulate it with batt insulation.

If you are planning to finish the basement however insulation faced with foil facing is not a good choice as it can trap moisture. When to use paper faced. And that s what s going on when you attempt to hang faced fiberglass. This is an even more dense and more expensive foam board insulation.

Paul march 6 2015 at 12 41 pm. For a basement remodeling project consider insulating basement walls with foam board. I ve written several articles on insulating basement walls and evolved some of my methods over time. Ap foil faced insulation is lightweight and easy to install.

Interior basement wall. Just buy un faced batts install them to grade 1 and build your air and moisture control systems in another layer big separate discussion. The damn facing obscures your work slowing down the installation and resulting in a poor insulation grade. Use a premade kit for this type of project.

One common use of extruded polystyrene foam board is for foundation insulation panels.