BASC Search | Building America Solution Center

Spray foam and rigid foam were used under the slab while rigid foam wraps the exterior of the foundation walls.

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Rigid foam serves as the sheathing on these 2x6 24-inch on center walls; plywood is used only at the corners for wind bracing.

Rigid foam serves as the sheathing on these 2x6 24-inch on center walls; plywood is used only at the corners for wind bracing.

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Seams in the ICF block are sealed so the EPS foam surface can serve as the drainage plane; no house wrap is needed.

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Southern Energy Homes worked with DOE researchers to develop an efficient way to dense-pack blown fiberglass into the low attics of manufactured homes.

Southern Energy Homes worked with DOE researchers to develop an efficient way to dense-pack blown fiberglass into the low attics of manufactured homes.

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Right – Ripped OSB provides furring strips for a ventilation gap behind the wood siding.

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Step 8. Attach the new cladding to the furring strips over the rigid foam for the exterior wall retrofit.

Step 8. Attach the new cladding to the furring strips over the rigid foam for the exterior wall retrofit.

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Building Science Education 3.2: Fourier's Law Part 1

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Video that introduces Fourier's Law (the law of heat transfer), and discusses how heat flows.

Building Science Education 3.7: Calculating R-Values for a Wall Part 1

Presentation

Video demonstrating how to calculate R-values for a simple wall construction.

Building Science Education 3.8: Calculating R-Values for a Wall Part 2

Presentation

Video demonstrating how to calculate R-values for a simple wall construction.

Use hat channels attached to the steel studs with stainless steel screws through the rigid foam to attach cladding with less thermal bridging

Use hat channels attached to the steel studs with stainless steel screws through the rigid foam to attach cladding with less thermal bridging

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Wrong - Cold spots along the top plate combined with lack of ventilation have encouraged mold growth along this bathroom ceiling.

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IECC Climate Zone 1A: Flat Roof, Unvented, 2x6 Wall, Monolithic Slab on Grade

IECC Climate Zone 1A: Flat Roof, Unvented, 2x6 Wall, Monolithic Slab on Grade

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IECC Climate Zone 2A: Flat Roof, Unvented, 2x6 Wall, Monolithic Slab on Grade

IECC Climate Zone 2A: Flat Roof, Unvented, 2x6 Wall, Monolithic Slab on Grade

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IECC Climate Zone 3A: SIP Roof, SIP Wall, Stem Wall, Slab on Grade

IECC Climate Zone 3A: SIP Roof, SIP Wall, Stem Wall, Slab on Grade

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IECC Climate Zone 3A: Vented Cathedral Celling, 2x6 Wall, Vented Crawl Space

IECC Climate Zone 3A: Vented Cathedral Celling, 2x6 Wall, Vented Crawl Space

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IECC Climate Zone 3B: SIP Roof, SIP Wall, Stem Wall, Slab on Grade

IECC Climate Zone 3B: SIP Roof, SIP Wall, Stem Wall, Slab on Grade

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IECC Climate Zone 4A: SIP Roof, SIP Wall, Stem Wall, Slab on Grade

IECC Climate Zone 4A: SIP Roof, SIP Wall, Stem Wall, Slab on Grade

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2021 IECC Climate Zone 4A: Vented Cathedral Ceiling, 2x6 Wall, Slab on Grade (with notes)

2021 IECC Climate Zone 4A: Vented Cathedral Ceiling, 2x6 Wall, Slab on Grade (with notes)

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2021 IECC Climate Zone 4B: Vented Cathedral Ceiling, 2x6 Wall, Slab on Grade (with notes)

2021 IECC Climate Zone 4B: Vented Cathedral Ceiling, 2x6 Wall, Slab on Grade (with notes)

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2021 IECC Climate Zone 4C: Vented Cathedral Ceiling, 2x6 Wall, Slab on grade (with notes)

2021 IECC Climate Zone 4C: Vented Cathedral Ceiling, 2x6 Wall, Slab on grade (with notes)

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2021 IECC Climate Zone 4C: Vented Attic, ICF Wall, ICF Basement Foundation (with notes)

2021 IECC Climate Zone 4C: Vented Attic, ICF Wall, ICF Basement Foundation (with notes)

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

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Wallingford Passive House | Foundation Details

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Video discussing the foundation details of a passive house.

Seal seams in fiber board ducts with out-clinching staples, UL-181A-approved tape, and mastic

Seal seams in fiber board ducts with out-clinching staples, UL-181A-approved tape, and mastic

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Wrong: This exhaust fan duct is too long and terminates in the attic instead of going through the roof and it is improperly supported; it needs straps all along its length to prevent sagging.

Wrong: This exhaust fan duct is too long and terminates in the attic instead of going through the roof and it is improperly supported; it needs straps all along its length to prevent sagging.

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After attaching netting to the 2x6 studs, workers fill the wall cavities with R-23 of blown fiberglass made from recycled bottles.

After attaching netting to the 2x6 studs, workers fill the wall cavities with R-23 of blown fiberglass made from recycled bottles.

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Right – Housewrap was properly shingled and taped on this wall assembly which places the housewrap beneath the rigid foam sheathing; wall cavities will be filled with spray foam.

Right – Housewrap was properly shingled and taped on this wall assembly which places the housewrap beneath the rigid foam sheathing; wall cavities will be filled with spray foam.

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Right – Furring strips provide a drainage gap between the rigid foam and the siding.

Right – Furring strips provide a drainage gap between the rigid foam and the siding.

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Masonry wall interior retrofit with parge coat, fluid-applied water control layer, spray foam, and wood or metal stud service cavity

Masonry wall interior retrofit with parge coat, fluid-applied water control layer, spray foam, and wood or metal stud service cavity

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Right – Joists between floors are air sealed to the ceiling drywall with canned spray foam along each joist-to-drywall-seam.

Right – Joists between floors are air sealed to the ceiling drywall with canned spray foam along each joist-to-drywall-seam.

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