Zinsser 3551 Flat White Primer Sealer 1 Gallon

Product Description

The ZINSSER 3551 is a flat white primer sealer formulated for interior and exterior surfaces including decks, floors, and roof surfaces. Packaged in a 1-gallon can, it delivers 300 to 401 square feet of coverage per gallon and carries a VOC content of 347 grams per liter. The recoat dry time is 2 hours, making it practical for multi-coat work within a standard workday. It is designed for use by painting contractors and maintenance professionals who need a surface-ready primer that blocks cedar and redwood bleed-through on problematic substrates.

This primer sealer is suited for both residential and commercial applications where surface preparation is required before topcoating. Approved applications include decks, floors, and roof surfaces in indoor and outdoor environments. The flat finish provides a consistent, low-sheen base coat. It is not rated for direct-to-metal application, so it should be applied over properly prepared wood, masonry, or compatible substrates as specified in the product data sheet.

Key Features

• Blocks cedar and redwood bleed-through on wood substrates
• Coverage of 300 to 401 square feet per gallon
• 2-hour recoat dry time supports same-day topcoating
• Flat finish provides a uniform base for topcoats
• Suitable for both indoor and outdoor use
• Available in a 1-gallon can for single-job or small-batch use

Compatibility

Designed for use on decks, floors, and roof surfaces in indoor and outdoor settings. Not rated for direct-to-metal application.

Installation Notes

Application should be performed by qualified painting contractors or experienced maintenance personnel following applicable local codes and manufacturer surface preparation guidelines. Surfaces must be clean, dry, and free of loose material before application. Ensure adequate ventilation when applying in enclosed or semi-enclosed spaces given the VOC content. Review the product data sheet for substrate-specific prep requirements before applying.