The Chemistry of Formulating & Processing Off-Ratio vs Off-Mix and It’s Not The Same…
- By Dudley J. Primeaux II, PCS, CCI
- Added on Jun 01, 2026
Dudley J. Primeaux II explains why proper spray foam and polyurea application depends on more than maintaining a 1:1 ratio. The article breaks down the chemistry of formulation, the importance of complete mixing at the spray gun, and why both equipment data and human documentation matter in verifying quality results. read more