Isocyanates are chemicals used as hardening agents in the mixing of spray polyurethane foam (SPF). One of the most commonly used is methylene diphenyl diisocyanate, or MDI.
How can this chemical affect my health?
Acute (Short Term) Effects
Chronic (Long Term) Effects
What are safer alternatives?
- GOOD – Use in limited circumstances where SPF is the only viable option, such as uneven interior foundation walls.
- BETTER – Use non-chemical applications such as mortar, if possible, on smaller projects.
- BEST – Consider other forms of insulation, such as mineral wool, cellulose or fiberglass.
Effects detailed above can occur at various stages of the product’s lifetime, not just during usage. All have been included to provide a complete picture of the chemical’s danger.