Skip to main content

Resources

Explore a library of home construction and renovation guidance and easily search through galleries containing hundreds of building science-related photos, drawings, videos, CAD files, case studies, and presentations.

Filter

View Library

Showing 625 - 648 of 771 results:

Video:

Total Duct Leakage Tests

Image:

Total Rater-measured duct leakage ≤ 8 CFM25 per 100 sq. ft. of conditioned area

Total Rater-measured duct leakage ≤ 8 CFM25 per 100 sq. ft. of conditioned area
Image:

Transfer grill sealed with mastic

Transfer grill sealed with mastic
Image:

Transfer grille not sealed

Transfer grille not sealed
Video:

Transfer Grilles (1)

Image:

Transfer grills and jump ducts provide pathways for air to reach the centrally located HVAC return grille, even when bedroom doors are shut.

Transfer grills and jump ducts provide pathways for air to reach the centrally located HVAC return grille, even when bedroom doors are shut.
Image:

Trunk to duct connections are only mechanically fastened and not sealed

Trunk to duct connections are only mechanically fastened and not sealed
Image:

Trunk to duct connections are properly insulated and have been sealed with mastic

Trunk to duct connections are properly insulated and have been sealed with mastic
Image:

Tuck any extra vapor barrier around and under the insulation and pull it tight to the connecting duct or boot to create a firmer surface to apply tape.

Tuck any extra vapor barrier around and under the insulation and pull it tight to the connecting duct or boot to create a firmer surface to apply tape.
Image:

Twisting and compressing flex duct will block air flow

Twisting and compressing flex duct will block air flow
Image:

Two manometers are used when pressure testing the airtightness of the walls separating the house from an attached garage

Two manometers are used when pressure testing the airtightness of the walls separating the house from an attached garage
Image:

Two pieces of flex duct are spliced together with a metal sleeve, nylon draw bands, mastic, metal tape, and more mastic

Two pieces of flex duct are spliced together with a metal sleeve, nylon draw bands, mastic, metal tape, and more mastic
Image:

Unfaced batt insulation completely fills the wall cavities.

Unfaced batt insulation completely fills the wall cavities.
Image:

Uninsulated, unsealed, or missing rim joists allow attic air and heat into the floor cavity

Uninsulated, unsealed, or missing rim joists allow attic air and heat into the floor cavity
Video:

University of Minnesota-NorthernSTAR: A Natural Gas-Fired Combi System for Space Heating and Hot Water

Image:

Unsealed, uninsulated rim joists allow outside air and heat into the floor cavity

Unsealed, uninsulated rim joists allow outside air and heat into the floor cavity
Image:

Use caulk or spray foam to air-seal all four edges of the blocking material in each joist bay.

Use caulk or spray foam to air-seal all four edges of the blocking material in each joist bay.
Image:

Use masking tape as a removable sealer to stop air from leaking around the return grille filter.

Use masking tape as a removable sealer to stop air from leaking around the return grille filter.
Image:

Use only Underwriters Laboratory UL-181 approved tape

Use only Underwriters Laboratory UL-181 approved tape
Image:

Ventilation air inlet is too close to exhaust outlet

Ventilation air inlet is too close to exhaust outlet
Image:

Ventilation air inlet is too close to exhaust outlet

Ventilation air inlet is too close to exhaust outlet
Image:

Ventilation air inlets ≥ 2 ft. above grade or roof deck in Climate Zones 1-3 or ≥ 4 ft. above grade or roof deck in Climate Zones 4-8 and not obstructed

Ventilation air inlets ≥ 2 ft. above grade or roof deck in Climate Zones 1-3 or ≥ 4 ft. above grade or roof deck in Climate Zones 4-8 and not obstructed
Image:

Ventilation air inlets located ≥10 ft. of stretched-string distance from known contamination sources such as stack, vent, exhaust hood, or vehicle exhaust

Ventilation air inlets located ≥10 ft. of stretched-string distance from known contamination sources such as stack, vent, exhaust hood, or vehicle exhaust
Image:

Ventilation inlet does not terminate high enough above the roof deck

Ventilation inlet does not terminate high enough above the roof deck