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Conceptual insulation at cape-style roof - roof cavity insulation with rigid insulation closure

CAD File

Unvented Attic Insulation

Guide

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

Conceptual insulation at cape-style roof - ceiling and knee wall cavity insulation

CAD File

Attic Eave Minimum Insulation

Guide

Guide providing guidance on insulating attic eaves in new and existing single-family homes and multifamily buildings.

How to Build an Insulated Cathedral Ceiling

Reference

Information sheet presenting the correct methods for building an insulated cathedral ceiling.

2x4 Raised Truss - Insulation Below Roof Deck CAD

CAD File

2x10 Rafter - Insulation Above Roof Deck and In Rafter Cavity CAD

CAD File

2x10 Rafter - Insulation Below Roof Deck In Rafter Cavity CAD

CAD File

2x12 Rafter - Insulation Above Roof Deck and In Rafter Cavity CAD

CAD File

2x12 Rafter - Insulation Below Roof Deck In Rafter Cavity CAD

CAD File

Conceptual insulation practice at attic-style truss system - above unconditioned space

CAD File

Conceptual insulation practice at attic-style truss system - above conditioned space

CAD File

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

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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

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Sloped roof with cavity spray foam insulation sprayed on underside of roof deck and covered with sprayed-on thermal or ignition barrier coating.

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Limited attic access may make it necessary to use a bore scope when inspecting for missing air barriers and insulation in existing buildings.

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Wrong: Closed-cell spray foam roof insulation was not thick enough to meet IRC levels so the foam surface is colder than the dew point of the interior air and condensation formed on surface of the foam

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Skylight Shaft Walls

Guide

Guide describing insulation techniques for skylight shaft walls.

Roof/Attic to Exterior Wall Air Control Upgrade

Guide

Guide describing how to retrofit an exterior wall and/or attic to provide continuous air sealing.

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.

Dropped Ceiling/Soffit Below Unconditioned Attic

Guide

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

Three inches of closed-cell spray foam (R-19) and 7.5 inches (R-28) of open-cell spray foam was installed below the roof sheathing in this cathedral ceiling.

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DOE ZERH HIA 2017 Case Study: Thrive Home Builders, Courtyard Rows, Lone Tree, CO

Case Study

Case study describing a DOE Zero Energy Ready Home 2017 Housing Innovation Award winner that scored HERS 41 without PV and 8 with PV.

Thin-profile attic eave baffle and vent

CAD File

Pre-Retrofit Assessment of Attics, Ceilings, and Roofs

Information Guide

Information guide describing things to consider in the attic, ceiling, or roof before attempting retrofits of items including HVAC, wiring, or structural systems.

Raised-Heel Trusses

Reference

Information sheet with the definition and uses for a raised truss.

Small Commercial Building Fact Sheet - Building Envelope

Reference

Fact sheet describing building envelope performance measures applicable to residential and small commercial construction.

Cold Climate Building Techniques and Concepts: Cathedral Roofs

Video

Video describing roof and attic construction for cold climates, including cathedral roof design and insulation strategies, from Cold Climate Housing Research Center.

Ventilating Cathedral Ceilings to Prevent Problematic Icings at their Eaves

Reference

Report describing the formation of icicles and ice dams along poorly ventilated roofs and how to mitigate ventilation issues with insulation and vents.

Existing Skylights Repaired or Replaced and Fully Flashed

Guide

Guide describing how to repair or replace skylights in existing homes.