Product Details Max Block™ is the next generation of water-based primers, formulated to provide advanced stain-blocking properties when compared with other typical water-based primers. Years of testing on multiple substrates in both interior and exterior environments have resulted in a product with proven effectiveness across multiple types of stains and tannin bleeding type woods such as redwood and cedar—providing a lower-VOC option in lieu of an alkyd-based stain-blocking primer. For interior and exterior use Nationally compliant low-VOC formulation Seals tannin stains Blocks tough household stains and odors Excellent adhesion to vertical and horizontal surfaces Fast drying; top coat in one hour View the brochure for more information Specifications Recommended For Use On Interior and exterior surfaces: drywall, plaster, wood, cured concrete, masonry, ceiling tile, galvanized metal, aluminum, tile, vinyl siding. Especially effective for tannin-rich woods and common household/odor stains. Key Features(s) Next generation water-based formulation with advanced stain blocking, fast-drying (ready for top coat in 1 hour), excellent adhesion, and low-VOC. Interior/Exterior Interior / Exterior Substrate Wide-ranging compatibility: drywall, plaster, wood, masonry, concrete, tile, vinyl siding, galvanized & aluminum metal. VOC Range