Profile: All Florida Insulation is a spray foam insulation contractor. SEALECTION® 500 is an open-cell semi-rigid, low density spray foam insulation product that has no ozone destroying gases (HFCs or HCFCs) or formaldehyde. It is environmentally friendly and allows you to achieve an airtight seal. Building scientists have recognized that air leakage has a tremendous impact on the R-Value performance of homes and buildings. It is an effective air barrier that eliminates the transfer of warm, moist air through the buildings envelope. By stopping that air movement, moisture cannot become trapped creating an environment for the growth of molds and mildew.