BASC Search

Guide describing installation of a fully sealed continuous weather resistant barrier to provide a drainage plane to keep rainwater out of above-grade walls.

Guide describing how to increase insulation in existing homes by installing batt insulation on the ceiling plane of a vented attic.

Guide describing the need for adequate structural sheathing in exterior walls in homes in high-wind areas.

Guide describing how to upgrade a crawlspace floor in an existing home by adding insulation.

Guide describing an approach to re-roofing an existing flat roof to improve thermal, water, and air control performance.

Guide describing how to insulate a vented attic in an existing home using blown insulation added to the attic floor.

Guide describing vapor retarder permeability, insulation interaction, and example construction in a hot-humid climate.

Guide describing how to insulate an existing slab floor by adding rigid foam insulation over the slab then installing a floating subfloor.

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

Guide describing how to install step and kick-out flashing where walls meet roofs.

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

Guide describing different options for providing seismic and thermal resistance for homes with basement foundations, crawlspace foundations, or crawlspace foundations with a "cripple" wall.

Guide describing how to apply flashing to the bottom of exterior walls to create a continuous drainage plane.

Guide describing different options for providing seismic and thermal resistance for homes with 'cripple' wall crawlspace foundations, which are known for their instability.

Guide describing how to air seal and insulate fiber board ducts.

Guide describing how to brace gable end walls to resist wind pressures.

Guide describing how to insulate a floor over an uninsulated basement or crawl space.

Guide describing the use of doors that are insulated and are impact rated or have protective coverings for resistance to hurricane, high winds, wildfires, and thermal losses.

Guide describing how to install a capillary break under a slab foundation using either polyethylene sheeting or rigid insulation installed over aggregate or over sand and geotextile matting.

Guide describing how to construct the walls of a home with bracing to resist high wind and earthquake loads.

Guide describing how to install and properly integrate flashing at the intersection of the wall and roof on an existing home.

Guide describing how to create a capillary break at all crawlspace floors using polyethylene sheeting to manage moisture in crawlspaces.

Guide describing common areas of thermal bridging in mass (concrete) and steel-framed multistory buildings and methods and materials for addressing those points of thermal bridging.

Guide describing how to insulate the sill beam or sill plate on the exterior side in a way that allows drying to the exterior, as part of an exterior wall upgrade.

Guide describing how to construct and retrofit homes built on slab-on-grade foundations in earthquake-prone areas to withstand seismic forces by properly installing wall-to-foundation connections.

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

Guide describing the air-sealing of rim joists on walls connecting homes and attached garages.

Guide describing materials and methods for incorporating thermal mass into the construction of a home for temperature regulation, energy savings, and resistance to extreme heat and cold.

Guide describing wind washing of insulation in the eaves of vented attics and how to prevent it.

Guide describing ways to seal drywall to the top plate of an exterior wall to air-seal the wall cavity.

Drainage Plane Behind Exterior Wall Cladding

Batt Insulation for Existing Vented Attics

Structural Sheathing (plywood/OSB) in Exterior Walls

Insulating Crawl Space Floors in Existing Homes

Water Managed Roof – Re-roofing and Adding Insulation over a Flat Roof

Blown Insulation for Existing Vented Attic

Class I Vapor Retarders Not Installed in Above-Grade Walls in Warm-Humid Climate

Rigid Foam Insulation Installed over Existing Foundation Slabs

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

Step and Kick-Out Flashing at Roof-Wall Intersections

Spray Foam Insulation Applied to Existing Attic Floor

Increase Seismic Resistance and Thermal Performance of Basement, Crawl Space, and Crawl Space with Cripple Wall Foundations

Flashing at Bottom of Exterior Walls

Retrofit Existing Crawl Space Foundations with Cripple Walls to Increase Seismic Resistance and Thermal Performance

Sealed and Insulated Fiber Board Ducts

Lateral Bracing in Gable End Walls

Insulating and Air Sealing Existing Floors above Unconditioned Spaces

Exterior Doors Are Insulated, Impact Rated, and Fire Rated

Capillary Break Beneath Slab - Polyethylene Sheeting or Rigid Insulation over Aggregate or Sand and Geotextile Mat

Wall Bracing for Hurricane, High Wind, and Seismic Resistance

Flashing of Roof-Wall Intersections in Existing Homes

Capillary Break at Crawlspace Floors - Polyethylene Lapped Up Walls and Piers or Secured in the Ground

Reducing Thermal Bridging in Mass and Steel-Framed Multifamily Buildings

Water Managed Existing Sill Beams and Sill Plates

Seismic and Thermal Resistance in Slab-on-Grade Foundations with Turned-Down Footings (Monolithic Slabs)

Dropped Ceiling/Soffit Below Unconditioned Attic

Garage Rim/Band Joist Adjoining Conditioned Space

High-Thermal-Mass Construction

Wind Washing

Air Sealing Drywall to Top Plate