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Right - Spray foam insulates and air-seals the stone walls of this unvented crawlspace.

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Right - This unvented crawlspace is insulated along interior walls with rigid foam and air-sealed by covering the floor with vapor retarder that is sealed to the rigid foam which is taped at the seams.

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Unvented roof assembly at rake retrofitted with spray foam installed along the underside of the roof deck and extended to the rake edge to insulate and air seal the attic

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New Code Options for Insulating, Sealing, and Controlling Moisture in Unvented Attics in Residential Buildings

Presentation

Webinar explaining new code options for insulating, sealing, and controlling moisture in unvented attics in residential buildings.

Unvented roof assembly at rake retrofitted with a filler piece and taped top edge of existing house wrap or building paper to seal the top of wall-to-roof transition

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Unvented Insulated Sloped Roofs

Guide

Guide describing construction of unvented, sloped, insulated roof assemblies in high wind zone areas.

Unvented Attic Insulation

Guide

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

Unvented Conditioned Attic with Spray Foam Insulation Below Roof Deck

Guide

Guide describing a method for insulating an unvented attic by spraying foam insulation along the underside of the roof deck.

Vented versus Unvented Attic

Guide

Guide describing options for insulating and air sealing at either the attic floor or along the roof line in new homes.

Unvented crawl space with interior insulation - designed for termite resistance in heavily infested areas

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Unvented roof assembly at eave retrofitted with rigid foam, spray foam, and taped top edge of existing house wrap or building paper

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Below Deck Spray Foam Insulation for Existing Roofs

Guide

Guide describing how to add spray foam insulation to the underside of the existing roof deck as part of the conversion of a vented attic to an unvented, insulated attic.