Log in or register to create Field Kits and Sales Worksheets. Why register?

Image Gallery

A damp crawlspace
Air seal the floor above an unconditioned basement or crawlspace and make sure floor insulation is in full contact with the underside of the subfloor.
Capillary break at all crawlspace floors using > 6 mil polyethylene sheeting, lapped 6-12 in., and secured in the ground at the perimeter using stakes
Capillary break at all crawlspace floors using ≥ 6 mil polyethylene sheeting, lapped 6-12 in., and lapped up each wall or pier and fastened with furring strips or equivalent
Capillary break at all crawlspace floors using ≥ 6 mil polyethylene sheeting, lapped 6-12 in., and placed beneath a concrete slab
Comprehensive water management features include a capillary break (≥ 6-mil polyethylene sheeting) at all crawlspace floors
Concrete slab over polyethylene sheeting as capillary break
Foil-faced rigid foam and spray foam can be used to insulate a basement on the interior; use good moisture management techniques to keep the basement dry
Infrared image of a rim joist
Insulation not aligned with subfloor or joists
Lapped and taped polyethylene sheeting
Moisture problems must be dealt with before sealing and insulating a crawlspace
Right - the vapor barrier is extended up the sides of the piers in this crawlspace, which is sealed and insulated to house the HVAC ducts.
Right – A heavy polyethylene sheet covers the floor of this crawlspace providing a capillary break and vapor barrier to keep soil gases out of the house
Right – Air barrier is present and installed between the floor system and unconditioned space
Right – Penetrations through the floor are air sealed
Right – Polyethylene sheeting vapor barrier is installed and sealed to the crawlspace walls with mastic
Right – Sub-floor insulation is properly installed and supported
Right--A heavy polyethylene sheet covers the floor of this crawlspace providing a capillary break and vapor barrier to keep soil gases out of the house.
The polyethylene ground cover for this insulated crawlspace is taped at seams and around posts before the insulation and slab are installed.
Taping polyethylene sheeting at interior pier footings
The sealed conditioned crawlspace provides a clean, dry, and temperate environment for the home’s supplemental dehumidifier.
The sealed, insulated crawlspace is a clean, dry location to house the main floor heating ducts and also provides bonus storage space.
There is 6 mil. polyethylene sheeting installed and sealed in the crawlspace
There is no polyethylene sheeting installed in the crawlspace
There is no polyethylene sheeting installed in the crawlspace
This crawlspace hatch would be weatherstripped if the crawlspace was vented to prevent air leakage.
Wrong – No air barrier is present between the floor system and unconditioned space
Wrong – No polyethylene sheeting vapor barrier is installed on the crawlspace floor
Wrong – Penetration through the floor is not air sealed
Wrong – Sub-floor insulation has gaps, compression, and misalignment
Wrong – Sub-floor insulation is not properly installed or supported
Wrong – The polyethylene sheeting vapor barrier is not attached to the piers with mechanical fasteners