Plan on using 2 to 3 inches thickness of cured foam in order to get both the air seal and a high r value.
Spray foam rim joist.
Make sure all flame sources are extinguished.
Spray foam insulation s main ingredients are water blown and organic chemical compounds derived from petroleum extracts.
Rim joist spray foam insulation.
Dap system 600 is a two component polyurethane foam closed cell that will completely fill the entire sill plate and rim joist.
Closed cell spf is an effective thermal air moisture and vapor barrier.
Closed cell spray polyurethane foam spf is an excellent choice for insulating attics and rim joists.
Critical seal application at basement rim joist spray foam can be left exposed in basement or conditioned crawlspace application for air barrier purposes spray foam must connect from foundation wall up rim joist and to floor sheathing photo above shows basement insulated mid thickness within.
Read the included manual to ensure you meet all osha requirements.
Step by step directions.
This is the fastest and best approach for insulating rim joists is to use a spray foam contractor or if you decide to do this yourself then use the daps system 600 touch n foam spray foam insulation.
Check if the kit contents are between 70 f 120 f.
And because the rim joist is such a critical junction point between the home and the foundation people often report massive savings from using a small amount of spray foam like the small kit foam it 202.