BASC Search | Building America Solution Center

Flat roof with cavity spray foam plus loose-fill insulation and gypsum board thermal barrier.

Image

Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1 1/2-Story Homes in Cold Climates

Reference

Report exploring alternative methods to find long-term solutions to energy loss in 1 ½-story homes to save energy, improve comfort, prevent frost buildup on the underside of the roof deck, and reduce the risk of ice dam formation/reformation.

Spray foam insulation was installed on the underside of the roof deck and on gable end attic walls to create an unvented attic

Spray foam insulation was installed on the underside of the roof deck and on gable end attic walls to create an unvented attic

Image

Lack of insulation over the top plate can lead to ice dam formation on a low sloped roof.

Image

2021 IECC Climate Zone 4C: Vented Attic, 2x4 Wall, Interior Insulated Basement (with notes)

2021 IECC Climate Zone 4C: Vented Attic, 2x4 Wall, Interior Insulated Basement (with notes)

Image

2021 IECC Climate Zone 6A:Vented Attic, Interior Double Wall, Interior Insulated Basement

Image

Right-Wall-insulating sheathing is extended up to roof rafters and sealed around the framing with spray foam

Right-Wall-insulating sheathing is extended up to roof rafters and sealed around the framing with spray foam

Image

Technology Solutions Case Study: BA-1312: Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing

Case Study

Case study describing research about spray foam roof insulation and moisture management.

2021 IECC Climate Zone 5: Vented Attic, 2x4 Wall, Interior Insulated Basement (with notes)

2021 IECC Climate Zone 5: Vented Attic, 2x4 Wall, Interior Insulated Basement (with notes)

Image

The base of the plywood parapet is air sealed with spray foam and fibrous insulation is installed in the rafter cavities in this flat roof retrofit

The base of the plywood parapet is air sealed with spray foam and fibrous insulation is installed in the rafter cavities in this flat roof retrofit

Image

Insulating sheathing is extended up to the roof rafters and sealed around the framing with spray foam as part of this exterior wall retrofit

Insulating sheathing is extended up to the roof rafters and sealed around the framing with spray foam as part of this exterior wall retrofit

Image

2021 IECC Climate Zone 6: Vented Cathedral ceiling, 2x6 Wall, interior Insulated Basement (with notes)

2021 IECC Climate Zone 6: Vented Cathedral ceiling, 2x6 Wall, interior Insulated Basement (with notes)

Image

2021 IECC Climate Zone 7 and 8: Vented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement (with notes)

2021 IECC Climate Zone 7 and 8: Vented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement (with notes)

Image

2021 IECC Climate Zone 4C: Vented Attic, Exterior Double Wall, Interior Insulated Basement (with notes)

2021 IECC Climate Zone 4C: Vented Attic, Exterior Double Wall, Interior Insulated Basement (with notes)

Image

Vented roof assembly at rake retrofitted with spray foam and additional insulation installed at the attic floor and extended to the rake edge

Vented roof assembly at rake retrofitted with spray foam and additional insulation installed at the attic floor and extended to the rake edge

Image

Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1-1/2 Story Homes in Cold Climates, Minneapolis, MN

Reference

This case study describes costs associated with the External Thermal and Moisture Management System developed by the NorthernSTAR Building America Partnership for retrofitting roofs with rigid foam over the roof deck, especially on one and a half-story homes.

Wood blocking for future PV panel installation is installed in the layers of polyisocyanurate rigid foam insulation during a flat roof retrofit

Wood blocking for future PV panel installation is installed in the layers of polyisocyanurate rigid foam insulation during a flat roof retrofit

Image

2021 IECC Climate Zone 4C: Vented Over-Roof, Unvented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

Image

2021 IECC Climate Zone 6A: Vented Over-Roof, Unvented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

Image

2021 IECC Climate Zone 6B: Vented Over-Roof, Unvented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

Image

2021 IECC Climate Zone 5C: Vented Over Roof, Unvented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

Image

2021 IECC Climate Zone 5A: Vented Over Roof, Unvented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

Image

2021 IECC Climate Zone 5B: Vented Over Roof, Unvented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

Image

2021 IECC Climate Zones 7 and 8: Vented Over-Roof, Unvented Cathedral Ceiling, 2x6 Wall, Interior Insulated Basement

Image

Step 1. Apply roof underlayment over roof deck and up the sidewall over the rigid foam insulation

Step 1. Apply roof underlayment over roof deck and up the sidewall over the rigid foam insulation

Image

There are three potential locations for an attic radiant barrier – adhered to the underside of the roof decking, hanging from the rafters, or on the ceiling insulation

There are three potential locations for an attic radiant barrier – adhered to the underside of the roof decking, hanging from the rafters, or on the ceiling insulation

Image

The attic is sealed and insulated along the underside of the roof deck with 5.5 inches of polyurethane spray foam, providing conditioned space for the HVAC system.

The attic is sealed and insulated along the underside of the roof deck with 5.5 inches of polyurethane spray foam, providing conditioned space for the HVAC system.

Image

Right - These raised heel roof trusses provide 16 inches of space over the outer walls for full insulation coverage at the attic perimeter.

Right - These raised heel roof trusses provide 16 inches of space over the outer walls for full insulation coverage at the attic perimeter.

Image

Right – Sheathing extends to rafters adding strength to soffit, baffles keep attic insulation from vent to maintain air flow

Image

This house design in the Hot-Humid climate uses a slab foundation, masonry walls, and an Exterior Insulation Finish System (EIFS) cladding.

This house design in the Hot-Humid climate uses a slab foundation, masonry walls, and an Exterior Insulation Finish System (EIFS) cladding.

Image

First
Previous
…
3
4
5
…
Next
Last