When we posted about Great Stuff Spray Foam, readers commented on the difficulty of cleanup and the “single-use” nature of the cans. One workaround is the “Pro” version, but it requires applicator guns and cleaner, which you don’t want to shell out for if you’re not getting paid for the job. Reader Joe offers a cheaper solution: “Here’s what Dow tech support suggested about keeping a can reusable:
“One-component foams as GREAT STUFF(TM) do not lend themselves to re-use. Once a can has been used and allowed to sit for more than two hours, it will seal itself shut. This is indicated on the can’s label.
“It is possible to preserve a can of GREAT STUFF polyurethane foam sealant. Insert a pipe cleaner, soaked with WD-40, into the attached applicator straw (do not remove straw from can). Leave the pipe cleaner sticking out of the applicator straw approximately 1/4 inch. This has to be done within two hours of use. The WD-40 soaked pipe cleaner may preserve the can up to 30 days.”
Kudos, Joe, for enduring the technical support hold time, and many thanks for sharing the fruits of your labor!