Polyurethane Spray-Foam Protection - Maris Polymers
Smith Paints Poly-Seal Gloss (Clear) Polyurethane Sealer for Concrete - 5 Gallon
How to keep pine from yellowing
All About Polyurethane - This Old House
Lesson learned: Polyurethane can SERIOUSLY yellow your projects. Anyone have a go-to clear finish to avoid this? Is laquer better? Right is stain, left is same+poly. : r/woodworking
Non-Yellowing Polyurethane - Quart / Flat
Polycrylic vs. Polyurethane: Which to Use On Your Wood Project - Bob Vila
Minwax Polycrylic Clear Satin Water-based Polyurethane Aerosol Spray (11.5-oz) in the Sealers department at Lowes.com