What Kind Of Insulation Is Best For Basement Walls?

Can I use batt insulation in basement?

Any foam insulation works well in basements – but don’t do batt and studs.

If possible, the framing, like the insulation should be resistant to moisture, mildew and mold.

Steel studs are a much better choice than wood studs..

What is the cheapest way to insulate basement walls?

Hybrid foam and fiberglass The cheapest way of insulating basement walls is by using foam board and fiberglass together.

What is the difference between pink and blue foam board?

Main Difference Between Pink And Blue Foam Boards The two products also have the same insulating power. However, blue foam boards are manufactured by Dow Chemical Co. whereas the pink foam boards are manufactured by Owens Corning company. The boards are marketed under different brand names.

What is the best R value for basement walls?

The basement walls need to be insulated to a minimum value of R-10 for continuous insulation (such as foam plastic insulation) or R-13 for framing cavity insulation based on the component requirements of Table N1102. 1 Insulation and fenestration requirements by component.

Should you insulate concrete basement walls?

Walls. 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. … The best insulations to use are foam based and should allow the foundation wall assembly to dry inwards.

What is code for basement insulation?

Insulation, Partitions & Walls Concrete foundation walls in finished rooms/areas shall be furred out and insulated with a minimum of R-8 insulation extending down to the basement floor slab on basement walls less than 50% above grade and a minimum of R-13 insulation on basement walls that are more than 50% above grade.

How thick should foam insulation be in a basement?

XPS – a.k.a Extruded Polystyrene – a.k.a Rigid Foam Board: This is what I installed, and the topic of this article. Boards come of varying thickness up to 2in. You get a thermal capability of R5 per inch of thickness. I recommend going with the 2in thick for an R10 rating.

Should you put plastic on basement walls?

A common question people have when finishing a basement is: “Should I use visqueen or plastic sheeting on one side or the other of the framed basement walls?” The answer is no. Plastic will keep moisture from moving through the wall. … So, moisture can and will get inside the wall.

Do I need a vapor barrier on my basement walls?

It provides the best coverage and R-value and and functions as a moisture barrier in and of itself. … But if you use fiberglass insulation batts, then a moisture barrier will prevent water and moisture from entering your walls and creating mold and mildew.

Should you use faced or unfaced insulation in a basement?

With batts and rolls from R-11 to R-21, it’s easy to add insulation to interior basement walls. … Place faced insulation between the studs with the vapor retarder facing the interior of the room. For the band joist, use unfaced cut-to-fit pieces of insulation and place them snugly into the space.

How do you insulate and frame a basement?

The ideal Basement wall assembly to prevent mold growth:Install two inches of rigid insulation board directly against concrete. … Frame an interior 2×4 stud wall at 24 inch centres, pressed tightly against the foam panels.Install mineral wool batts in the cavities.More items…•