Is “All-Water Polyurethane” Filled with a Lot of Water?

The water content in all-water polyurethane polyol component is actually very low, typically only around 2–4%. Too much water would cause excessive foaming → resulting in coarse, uneven cell structure and reduced strength, among other issues. So while people may assume all-water polyurethane contains lots of water and should therefore be cheaper, this is not the case. In fact, its cost is higher compared to traditional 141B polyurethane systems.