Stimulus

Weather Barrier Solutions

Crawl Space

Call for a Better Crawl

Reduce Energy Loss from the ground up.

Leaving the crawl space uninsulated can be a major source of a home's energy loss. A continuous layer of rigid foam insulation from Dow on the interior surface of the crawl space walls is the most effective way to reduce energy loss in a crawl space. It's moisture resistant and helps reduce the potential for damp crawl spaces. Plus, it cuts easily and installs quickly.

Weatherize and enhance energy efficiency with GREAT SUTFF PROâ„¢ Gaps & Cracks Insulating Foam Sealant and FROTH-PAKâ„¢ Foam Sealant.

U.S.

Project Specifications Recommended Dow Solutions

No vents in the crawl space and no ventilation openings to the living area

Unheated crawl space
  • Designed for termite areas
  • Contains insecticide
  • Square edge and shiplap
  • 1" - 2" thicknesses
  • One board size
  • 25 psi
 STYROFOAMâ„¢ Brand BLUEGUARDâ„¢ Insulation
  • Scored at 16" and 24" on center
  • Easy to snap to convenient widths
  • Square edge
  • 3/4" -3" thicknesses
  • 25 psi

STYROFOAMâ„¢ Brand SCOREBOARDâ„¢ Insulation
  • Square edges on all four sides
  • 3/4"-4" thicknesses
  • Two board size options
  • 25 psi
 STYROFOAMâ„¢ Brand Square Edge Insulation
  • Interlocking fit
  • 3/4"-2" thicknesses
  • Three board size options
  • 25 psi
 STYROFOAMâ„¢ Brand Tongue and Groove Insulation
  • Glass-fiber-reinforced polyisocyanurate foam core for fire resistance
  • Aluminum foil facers
  • 1/2"-2" thicknesses
  • Three board size options
  • 25 psi
 THERMAXâ„¢ Sheathing

Enhanced Installation

No vents in the crawl space but has ventilation openings to the living area
  • Designed for termite areas
  • Contains insecticide
  • Square edge and shiplap
  • 1" – 2" thicknesses
  • 25 psi
 STYROFOAMâ„¢ Brand BLUEGUARDâ„¢ Insulation
  • Glass-fiber-reinforced polyisocyanurate foam core for fire resistance
  • Aluminum foil facers
  • 1/2"-2" thicknesses
  • Three board size options
  • 25 psi
 THERMAXâ„¢ Sheathing

Enhanced Installation
 
Literature
Breathe Easier With a Non-Vented Crawl Space (248KB PDF)
Performance and Value Revealed: THERMAXâ„¢ for Basements and Crawl Spaces (516KB PDF)
Start off on the Right Foot With THERMAXâ„¢ Sheathing and THERMAXâ„¢ White Finish Insulation (276KB PDF)
Installation Procedures for THERMAXâ„¢ Sheathing: Closed Crawl Space (124KB PDF)
Installation Instructions
Crawlspaces - Installing STYROFOAM Square Edge, STYROFOAM SCOREBOARDâ„¢ or STYROFOAM Tongue & Groove Insulation
 (1) Consult the label and Material Safety Data Sheet carefully before use.

Canada

Project Specifications Recommended Dow Solutions  

Heated crawl space or floor above an unheated crawl space
  • 2' x 8' (600 mm x 2400 mm) boards
  • 1/2"-1-1/2" (13 mm-38 mm) thicknesses
  • Butt edge and shiplap edge options
  • 16 psi (110 kPa)
 STYROFOAMâ„¢ Brand CLADMATEâ„¢ Insulation
  • Convenient larger 4' x 9' (1200 mm x 2700 mm) boards
  • 1"-2" (25 mm-50 mm) thicknesses
  • Shiplap edge
  • 16 psi (110 kPa)
 STYROFOAM™ Brand CLADMATE™ XL Insulation
  • 2' x 8' (600 mm x 2400 mm) boards
  • 1"-4" thicknesses
  • Butt edge and shiplap edge options
  • 30 psi (210 kPa)
 STYROFOAM™ Brand SM Insulation
  • Slotted board edges accommodate nailing strip for ease of attachment
  • 2' x 8' (600 mm x 2400 mm) boards
  • 1.5"-2.4" (38 mm-60 mm) thicknesses
  • 16 psi (110 kPa)
 STYROFOAMâ„¢ Brand WALLMATEâ„¢ Insulation

Enhanced Installation
 
Installation Instructions
Installing STYROFOAM SM, STYROFOAM CLADMATE/CLADMATE XL in Heated Crawlspaces
Installing STYROFOAM WALLMATE Slotted Insulation – Heated Crawlspaces
 (1) Consult the label and Material Safety Data Sheet carefully before use. 

Dow can help you get to the bottom of your foundation insulation questions.

Dow Building Solutions : North America : Weather Barrier Systems