Free tool
Insulation Planner
Pick your climate and your type of crawl space and see typical R-values and the thickness to match.
A planning guide with typical R-value ranges. Your local building code sets the real requirement, and we check it before we choose a material.
How to use it
Three quick steps
- 1Pick climate and spaceHot, mixed or cold; sealed or vented.
- 2Pick a materialFoam board, spray foam or batts.
- 3Read the drawingSee the target and the thickness in the joist bay or on the wall.
Questions
About the insulation planner
Are these the code values?
They are typical ranges. Your local building code sets the requirement, and we check it.
Why wall insulation for a sealed space?
A sealed space is part of the home's comfort zone, so the walls are insulated and the floor is not.
Will a thick batt fit the joist bay?
The drawing shows whether the thickness fits the joist depth you entered.
Next step
Services that go with this tool
Crawl Space Wall InsulationInsulate the foundation walls instead of the floor and bring the crawl space inside the home's comfort zone.See the service 
Floor Insulation and Underfloor InsulationInsulation between the floor joists, installed so it stays put and does its job.See the service 
Spray Foam InsulationClosed-cell spray foam seals and insulates in one step on walls and rim joists.See the service Find out what is under your house.
Call or text, or send the form for your free estimate. Tell us what you notice, from smells and cold floors to water and sagging.