The application of spray foam is easy, but the removal is nearly impossible. The volatile organic compounds (VOCs) and mal-odors resulting from spray foam can absorb into nearby building materials and furnishings, allowing odors to permeate for years. Residual toxic spray foam will remain embedded within the wood structures.
Toxic spray foam consequently off-gasses or releases harmful chemicals in the air, some of which you can smell and some of which you cannot. Many of these chemicals therefore cause immediate or acute reactions and can cause long-lasting and permanent damage to your body.