Spray Foam Interior Insulation for Existing Foundation Walls Description Guide describing how to insulate an existing foundation wall by adding spray foam insulation to the interior side of the wall.
No Vapor Retarders on Interior Side of Air-Permeable Foundation Insulation Description Vapor retarder plastic should not be installed over fibrous insulation on basement or crawlspace walls unless rigid foam or spray foam is installed directly against the concrete, behind the blanket insulation.
Image The below-grade wall assembly includes dampproofing, draining details, and insulation. Publication Date Tue, 05/01/2012 - 12:00
Image The seams of the rigid insulation are not taped and it will not provide a complete capillary break Publication Date Tue, 02/01/2011 - 12:00
Image Wrong – The insulated concrete forms at the foundation do not have a damp-proof coating Publication Date Tue, 02/01/2011 - 12:00
Image Right – The insulated concrete forms that are below-grade have a damp-proof coating to prevent moisture seeping into the foundation Publication Date Tue, 02/01/2011 - 12:00
Image Right - Below-grade concrete has been properly sealed against moisture and is now having insulation installed. Publication Date Tue, 02/01/2011 - 12:00
Concrete Solutions, BSI-118 Author(s) Lstiburek Joseph W Organization(s) Building Science Corporation, BSC Publication Date October, 2020 Description Report covering insulating crawlspaces.
Image Good water management practices like sloping grade away from house, and installing gutters, perimeter drain pipe, a capillary break, and free-draining soils or drainage mat protect the foundation from water saturation. Publication Date Thu, 03/01/2012 - 12:00
Damp-Proof Exterior Surface of Below-Grade Walls Description Guide describing how to apply water management strategies to below grade walls.
Image Right – Polyethylene sheeting vapor barrier is installed and sealed to the crawlspace walls with mastic Publication Date Tue, 02/01/2011 - 12:00
Image Wrong – The polyethylene sheeting vapor barrier is not attached to the piers with mechanical fasteners Publication Date Tue, 02/01/2011 - 12:00
Image Right - Basement slab with a capillary break of either gravel or a drainage mat. Publication Date Thu, 02/01/2018 - 12:00
Image Wrong - Class I vapor retarder over framed basement walls can cause condensation, mold, and rotting because plastic prevents drying to the inside; the outside should have waterproofing and vertical drainage, and the framing should be spaced from the wall. Publication Date Thu, 03/01/2012 - 12:00
Capillary Break at Crawlspace Floors - Polyethylene Lapped Up Walls and Piers or Secured in the Ground Description Guide describing how to create a capillary break at all crawlspace floors using polyethylene sheeting to manage moisture in crawlspaces.
Capillary Break at Crawlspace Floor - Polyethylene Sheeting under Concrete Slab Description Guide describing how to install a capillary break to help manage moisture in foundations.
Design and Retrofit for Flood Protection Description Information guide describing constructed flood protection measures to minimize damage and increase structural resilience during a flood.
Footing Drain Pipe Description Guide describing how to help drain water away from the perimeter footing.
Final Grade Slopes Away from Foundation Description Guide describing how to properly grade a site so water will flow away from the foundation.