Zinsser Mold Killing Primer is an interior/exterior primer that contains an anti-microbial fungicide to kill existing mold, mildew, or odor-causing bacteria and prevent growth in the future. It dries to touch in 30 minutes and can be top-coated in one hour. Dec 21, 2008 · I'm not familiar with Kilz, but you probably definitely want to thin down the primer before dipping. I'm using an exterior oil-based primer and its probably thinned 50/50, makes dipping so much easier. I would say 60/40 is about right though. I know its exciting, but its important not to rush the process. Before you paint, make sure you choose a primer with strength. Kilz primer is perfect for covering up stains on walls, fence boards or covering up old dark p... KILZ makes a family of hardworking primers for every project! Learn more about which primer is right for you. For drywall, apply two coats of drywall primer-sealer (e.g., Behr Premium Plus Drywall Primer and Sealer, available at The Home Depot) or high-build drywall Your best bet for priming dark walls is with a "high-hide" primer (e.g., KILZ High-Hide Primer/Sealer, available at Amazon) formulated to...Get free shipping on qualified KILZ Primer Stain Blocking Primers or Buy Online Pick Up in ... Please call us at: 1-800-HOME-DEPOT (1-800-466-3337) Customer Service ...