Frost-Protected Shallow Foundation

North America

Frost-Protected Shallow Foundation

Heave – No!

(Not if we can help it!)

To prevent frost heaving of uninsulated shallow foundations, building codes in many regions specify that foundations extend below the frost line, requiring additional excavation and concrete. Avoid this extra step - and meet code - by insulating the shallow foundation with STYROFOAM™ Brand Extruded Polystyrene Insulation. And save time and money while you're at it.

See ASCE Design & Construction of Frost-Protected Shallow Foundations. International Code Section R403.3. For more information, visit http://www.nahb.org.

U.S.

Project Specifications	Recommended Dow Solutions
Protect foundation from frost Eliminate frost heaving Avoid extending foundation below frostline Meet codes	Easily snapped into convenient sizes Scored on 16" and 24" centers 3/4"-3" thicknesses Square edges on all four sides	STYROFOAM™ Brand SCOREBOARD™ Insulation
	Square edges on all four sides 3/4"-4" thicknesses Two board size options	STYROFOAM™ Brand Square Edge Insulation
	Interlocking fit 3/4"-2" thicknesses Three board size options	STYROFOAM™ Brand Tongue and Groove Insulation
	Enhanced Installation	WEATHERMATE™ Construction Tape GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant⁽¹⁾ FROTH-PAK™ Foam Sealant

(1) Consult the label and Material Safety Data Sheet carefully before use.

Canada

Project Specifications	Recommended Dow Solutions
Protect foundation from frost Eliminate frost heaving Avoid extending foundation below frostline Meet codes	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
	Enhanced Installation	GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant⁽¹⁾ FROTH-PAK™ Foam Sealant

(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.