North America – Sill Plate

Seal gaps around the sill plate with specially designed products from Dow.

Get More on Your (Sill) Plate

More protection against air infiltration, that is.

The top of a concrete foundation is often irregular. When the wood sill plate is placed over this rough concrete, gaps can form, creating pathways for air, moisture and insects to enter, and conditioned air to escape. Seal these gaps with specially designed products from Dow.

U.S.

Project Specifications	Recommended Dow Solutions
Reduce air infiltration between foundation and sill plate Fill gap between the sill plate and foundation	Flexible polyethylene foam gasketing strip Seals gaps in irregular surfaces 50' rolls	WEATHERMATE™ SILL SEAL Foam Gasket
	Minimal-expanding Single component polyurethane foam sealant Fireblock; identifiable orange color	GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant⁽¹⁾
	Portable, two-component foam sealant Complete kit includes pressurized "A" and "B" tanks, dispensing gun/hose assembly and accessories Multiple sizes available	FROTH-PAK™ Foam Sealant
	Learn more about weatherization

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

Canada

Project Specifications	Recommended Dow Solutions
Reduce air infiltration between foundation and sill plate Fill gap between the sill plate and foundation	Minimal-expanding Single component polyurethane foam sealant	GREAT STUFF PRO™ Gaps & Cracks Insulating Foam Sealant⁽¹⁾
	Portable, two-component foam sealant Complete kit includes pressurized "A" and "B" tanks, dispensing gun/hose assembly and accessories Multiple sizes available	FROTH-PAK™ Foam Sealant

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

Literature

Below Grade Insulation: The foundation of effective energy savings (Canada) (536KB PDF)

Below Grade Insulation: The foundation of effective energy savings (French) (536KB PDF)

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