This high-solids, catalyst-optional, waterbased primer is ideal for any challenging interior wood substrate. Easy to sand, excellent fill, great adhesion and exceptional blocking of stains and tannins, the 643 primers is ideal for both new construction and refinishing applications. A great compliment to Renner 851 2K Polyurethane topcoats!
Renner is the industry leader in high performance waterbased finish.
Check out our Renner Product Guide for mix ratios, dry times and all other technical data.