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Spray foam insulation used for raised ceiling duct chase

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Spray foam insulation used for raised ceiling duct chase.

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Right - Spray foam insulation has been sprayed onto the underside of the sloped roof and the gable end wall to provide a sealed, insulated attic for housing the HVAC ducts

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Encapsulated Ducts

Video

Video describing air sealing and insulation for encapsulated ducts.

Encapsulated Ducts

Guide

Guide that illustrates how and when to encapsulate ductwork in unconditioned attics, increasing the R-value of duct insulation, mitigating condensation issues, and reducing air leakage.

Air Sealing Duct and Flue Shafts

Guide

Guide describing how to air-seal duct and flue shafts.

Encapsulated ducts are sprayed with ccSPF in an unconditioned attic

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Duct boots and other ceiling penetrations are air-sealed using spray foam

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Install wood framing cross pieces in the attic rafter bays on each side of the duct chase

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Unvented Attic Insulation

Guide

Guide describing methods for insulating an unvented attic along the roof line.

Install wood framing cross pieces in the attic rafter bays on each side of the duct chase

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Second layer of rigid insulation is adhered with foam

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Attic Air Sealing, Insulating, and Ventilating for Ice Dam Prevention

Information Guide

Information guide describing proper attic air-sealing, insulation, and ventilation to combat ice dam formation on roofs in cold climate zones.

Form an insulation dam of heat-resistant insulation with at least 3 inches of clearance around a flue pipe in the attic after air sealing around the pipe with sheet metal and fire-rated caulk or canned foam

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Air Sealing, Insulating, and Venting Attics and Roofs to Reduce Heat Gain

Information Guide

Information guide providing links to guides describing specific ways to air-seal, insulate, and ventilate attics and roofs to minimize heat gain in new and existing homes.

Spray Foam Insulation Applied to Existing Attic Floor

Guide

Guide describing how to apply spray foam insulation to the floor of the attic in existing homes.

Wrong: open wall cavity connected to this return air plenum is allowing cellulose attic insulation to be pulled into the furnace

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Form an insulation dam of sheet metal around a flue pipe in the attic after air sealing around the pipe with sheet metal and fire-rated caulk or canned foam

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Water Managed Roof – Re-roofing and Adding Insulation Over a Sloped Roof

Guide

Guide describing how to re-roof an existing home with a sloped roof and add insulation above the roof deck.

Air Sealing Bathroom and Kitchen Exhaust Fans

Guide

Guide describing how to air-seal bathroom and kitchen exhaust fans.

Builders Challenge High Performance Builder Spotlight: David Weekley Homes, Houston, Texas

Case Study

Case study describing new home construction in the hot-humid climate, optimizing thermal enclosure, HVAC, water heating and lighting measures.

Sealed Attics?

Reference

Article describing how insulating and air sealing unfinished attic spaces can lead to reduced energy bills in some homes.

Form a sheet metal shield around the flue pipe

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Form sheet metal shield around pipe keeping 3-inch clearance

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Air Seal HVAC Cabinet Seams

Guide

Guide describing air-sealing of the seams and holes in HVAC air handler and furnace cabinets.

Existing Whole-House Solutions Case Study: Deep Energy Retrofit in the Pacific Northwest

Case Study

Case study describing a whole-house, deep energy retrofit project in the marine climate.

Venting Vapor, BSI-088

Reference

Guide providing information on controlling attic ductwork sweating.

New Whole-House Solutions Case Study: Tom Walsh & Co., New Columbia, Portland, OR

Case Study

Case study describing a new construction building project of 20 homes that earned HERS scores that represent greater than 50% energy savings in heating and cooling over the 2004 IECC.

Dropped Ceiling/Soffit Below Unconditioned Attic

Guide

Guide describing how to insulate and air-seal dropped ceilings and soffits to prevent air leakage.

Install Top Plates or Blocking at the Top of Walls Adjoining Unconditioned Spaces

Guide

Guide describing how to correctly air-seal a wall with missing top plates or open wall cavities.