Full Product Manual

ROCKWOOL

Non-Vented crawl space installation

A non-vented crawl space is dened as having a heating

or cooling source, or some other source that conditions

the air within the crawl space. Conditioning the room

helps to minimize moisture build-up in the space, and

helps to avoid the growth of mold.

A non-vented crawl space is insulated in the same manner

as a conditioned basement. The exterior foundation is

framed in with studs, and the insulation is then installed

between the studs.

Dirt oors of a non-vented crawl space should be covered

with a suitable vapor barrier before insulating. All joints of

the vapor retarder shall overlap by 6 inches (153 mm) and

be sealed or taped. The edges of the vapor retarder shall

extend at least 6 inches (153 mm) up the stem wall and

shall be attached to the stem wall. Walls of a non-vented

crawl space should be insulated in exactly the same

manner as a basement wall.

Step 1

Mechanically fasten ROCKWOOL Comfortboard 80 to the exterior wall.

Step 3

Install ROCKWOOL Comfortbatt thermal insulation between studs.

Step 2

Install 2x4 stud wall directly against ROCKWOOL Comfortboard 80.

Step 4

Where required by local building code, staple vapor retarder to studs then

tape and seal joints.