Pull up almost any protective coating’s technical data sheet and you’ll find a column of numbers next to a string of letters and digits, D412, D2240, D4541, and half a dozen others, sitting there like a secret code most buyers skim right past. Those codes are ASTM test method designations,...
Pull up almost any coating’s technical data sheet and you’ll find a cluster of numbers near the top: tensile strength, elongation at break, shore hardness, usually a few more. Most people glance at them, maybe notice one number looks impressively high, and move on to reading about coverage rates and...
Anyone who’s watched a perfectly good-looking coating turn a dull yellow-brown after a summer in direct sun has run into this problem without necessarily knowing what caused it. It’s not a defect, and it’s not usually a sign the coating was applied wrong. It’s chemistry, specifically the difference between aliphatic...