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Install all layers of the drainage plane to overlap, not underlap, to direct bulk water down and out of the wall.

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Drain the Rain…On the Plane…the Drainage Plane, BSI–112

Reference

Report covering the rainwater performance of building assemblies.

Closed-cell spray foam insulates the floor above a vented crawlspace; a protection board made of fiber cement is screwed in place under the floor joists to keep out pests

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The ventilation space in this vented over-roof keeps the roof cool to prevent ice dams over the unvented attic

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BSC Information - Common Flashing Details for All Climates, Sheet 303

Reference

Brochure providing information about flashing in all cimates.

Mass Save Deep Energy Retrofit Builder Guide, GM-1302

Reference

Guidebook providing useful examples of high performance retrofit techniques for the building enclosure of wood frame residential construction in a cold and somewhat wet climate.

This floor assembly above a vented crawlspace controls vapor and heat transmission by using foil-faced isocyanurate rigid foam insulation installed underneath the floor joists and fiberglass insulation in the floor joist cavities

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Hybrid Assemblies, BSI-100

Reference

Article describing issues with condensation in unvented attics insulated with open-cell spray foam.

Installing Windows with Foam Sheathing on a Wood-Frame Wall

Reference

Report with guidance for installing windows with foam sheathing on wood-frame walls.

Technology Solutions Case Study: Guidance on Taped Insulating Sheathing Drainage Planes

Case Study

Case study describing best practices for using rigid foam sheathing as a drainage plane in new and retrofit wall construction.

Great Fire of London, BSI–098

Reference

Report covering the fire performance of combustible cladding over combustible insulation.

Comprehensive water management features include a capillary break (≥ 6-mil polyethylene sheeting) at all crawlspace floors

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Builder's Guide to Cold Climates

Reference

Book presenting the best techniques for energy and resource efficient residential construction in the colder climates of North America.

Understanding Air Barriers, BSD-104

Reference

Information sheet providing definitions, applications, and techniques for applying air barriers.

Ping Pong Water and The Chemical Engineer, BSI-016

Reference

Article outlining moisture accumulation in open cell spray polyurethane foam.

Plan view of duct or pipe penetration through exterior wall showing flashing and air sealing details

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Section view of duct or pipe penetration through exterior wall showing flashing and air sealing details

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Plan view of electric box installation in exterior wall showing flashing and air sealing details

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Section view of electric box installation in exterior wall showing flashing and air sealing details

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Measure Guideline: Deep Energy Enclosure Retrofit (DEER) for Zero Energy House (ZERH) Flat Roofs

Reference

This Measure Guideline provides design and construction information for a deep energy enclosure retrofit solution of a flat roof assembly.

Measure Guideline: Guide to Attic Air Sealing

Reference

Guideline describing information and specifications relevant to air-seal existing attics.

Cool Hand Luke Meets Attics, BSI-077

Reference

Article describing the difference between conditioned or unvented attics and unconditioned or vented attics.

Technology Solutions Case Study: Moisture Durability of Vapor Permeable Insulating Sheathing

Case Study

Case study describing research about using exterior, vapor permeable insulation of retrofit walls with vapor permeable cavity insulation.

Technology Solutions Case Study: Cladding Attachment Over Thick Exterior Insulating Sheathing

Case Study

Case study describing optimal design and limitations of cladding attachments over exterior sheathings.

Insulating sheathing is installed on exterior of an existing framed wall with water control between existing sheathing and insulating sheathing

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The icicles and the bare spot along the left roof ridge indicate that heat from the second-story room may be heating the underside of the roof deck, melting the snow and likely leading to ice dam formation.

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High-R Roofs Case Study Analysis, BA-1006

Reference

Report that considers a number of promising wall systems that can meet the requirement for better thermal control.

Install all layers of the drainage plane to overlap, not underlap, to direct bulk water down and out of the wall.

Drain the Rain…On the Plane…the Drainage Plane, BSI–112

Closed-cell spray foam insulates the floor above a vented crawlspace; a protection board made of fiber cement is screwed in place under the floor joists to keep out pests

The ventilation space in this vented over-roof keeps the roof cool to prevent ice dams over the unvented attic

BSC Information - Common Flashing Details for All Climates, Sheet 303

Mass Save Deep Energy Retrofit Builder Guide, GM-1302

This floor assembly above a vented crawlspace controls vapor and heat transmission by using foil-faced isocyanurate rigid foam insulation installed underneath the floor joists and fiberglass insulation in the floor joist cavities

Hybrid Assemblies, BSI-100

Installing Windows with Foam Sheathing on a Wood-Frame Wall

Technology Solutions Case Study: Guidance on Taped Insulating Sheathing Drainage Planes

Great Fire of London, BSI–098

Comprehensive water management features include a capillary break (≥ 6-mil polyethylene sheeting) at all crawlspace floors

Builder's Guide to Cold Climates

Understanding Air Barriers, BSD-104

Ping Pong Water and The Chemical Engineer, BSI-016

Plan view of duct or pipe penetration through exterior wall showing flashing and air sealing details

Section view of duct or pipe penetration through exterior wall showing flashing and air sealing details

Plan view of electric box installation in exterior wall showing flashing and air sealing details

Section view of electric box installation in exterior wall showing flashing and air sealing details

Measure Guideline: Deep Energy Enclosure Retrofit (DEER) for Zero Energy House (ZERH) Flat Roofs

Measure Guideline: Guide to Attic Air Sealing

Cool Hand Luke Meets Attics, BSI-077

Technology Solutions Case Study: Moisture Durability of Vapor Permeable Insulating Sheathing

Technology Solutions Case Study: Cladding Attachment Over Thick Exterior Insulating Sheathing

Insulating sheathing is installed on exterior of an existing framed wall with water control between existing sheathing and insulating sheathing

Application of Spray Foam Insulation Under Plywood and Oriented Strand Board Roof Sheathing, BA-1312

Water management details at a mechanical curb for a skylight

Understanding Attic Ventilation, BSD-102

The icicles and the bare spot along the left roof ridge indicate that heat from the second-story room may be heating the underside of the roof deck, melting the snow and likely leading to ice dam formation.

High-R Roofs Case Study Analysis, BA-1006