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Manufacturer's Product Description

Keep topcoats looking fresh with Extreme Block® Interior Exterior Stain Blocking Waterbased Primer. Stain Locking Technology helps trap stains like smoke, fire, nicotine and tannin bleed in the first coat for a uniform finish without unsightly bleed-through. When stains exceed the capability of standard waterbased primers, professional painters trust Extreme Block® to quickly restore properties to a fresh condition with minimal disruption to occupants.

• Stains from smoke, fire, nicotine, tannin bleed and more are no match for the Stain Locking Technology
• Minimal odor, compared to solvent based primers, maximizes customer satisfaction thanks to the waterbased formula and proven Odor Block Technology
• Fast-drying formula helps keep projects on schedule
• Achieves a strong bond with the substrate, offering an excellent base for the selected topcoat
• Meets the most stringent VOC regulations, offering powerful performance with fewer than 50 g/L VOCs
More about Sherwin-Williams
Sherwin-Williams® supports designers with color and coatings expertise to make your visions become reality. With our expert personalized service, a breadth of products, advanced design tools and exclusive resources, we help guide your project every step of the way.