Polymers
Coatings, sealers, foams, and the resin in composite rebar are all polymers. These guides cover how they cure, how they compare, and how to handle them safely while they do.
- Is Polyurethane Toxic?
Cured, it is inert. Wet and curing, it needs air. The safety facts.
Published July 8, 2026
- Epoxy vs Polyurethane
One is hard and bonds; the other flexes and survives sunlight.
Published July 8, 2026
- Open Cell vs Closed Cell Spray Foam
Gas-filled and rigid, or air-filled and spongy. The trade is R-value against cost.
Published July 8, 2026