Evaluate polyurethane foam sealants, which are common and easy to find at hardware suppliers Polyurethane foam sealants are probably the type of foam sealant you'll run into most often. Foam polymer sealants are excellent at repelling water, making them resistant to mold and rot. However, these sealants can be extremely hard to clean up, so be especially careful with application.

I recommend:  Fomo Products makes Handi-Seal Window and Door Sealant, a specialized and durable polyurethane spray sealant. The Building Solutions arm of Dow Chemical Company offers a few different kinds of polyurethane foam sealants for different uses, including their GREAT STUFF PRO Gaps & Cracks Insulating Foam Sealant.

Consider latex-based foam sealants, which are somewhat less common but have a few key advantages Latex-based foam sealants are relatively new to the builder's marketplace. They have the advantage of being easier to clean up than polyurethane foam sealants, and a slower rate of expansion makes their final volume more predictable. The downside is that latex-based foam sealants are more susceptible to mold and rot.

I recommend:  DAP makes DAPtex Latex Insulating Foam Sealant, a multipurpose sealant for use around the home. EasyFill from Touch 'n Foam is a latex foam sealant that works well around baseboards and plumbing fixtures.

Look into alternatives, such as a water-based spray foam sealant, for home sealing projects For residential sealing projects, consider some of the alternative foam sealant products on the market. Water-based sealants share some of the benefits of latex sealants, including easy clean up. You and your clients might prefer to explore eco-friendly sealants, which are swiftly gaining popularity.

I recommend:  Icynene manufactures water-based sealants and insulation that you can use in projects both large and small. Biofoam offers a green alternative; the company's environmentally friendly foam forms an air- and water-tight seal, keeping out cold air, dust and moisture.