Zinsser B-I-N Primer Spray 13 oz White | Shellac-Base Stain and Odor Blocking Primer

Overview

Zinsser B‑I‑N Primer Spray is the classic shellac‑base primer‑sealer trusted for challenging prep work. The 13‑ounce can in white delivers a durable barrier designed to block stubborn stains, knots, and odors before you paint the surface you intend to finish.

Built for interior use and select spot exterior applications, this primer aims to create a uniform base that helps your topcoat look more even and true to color. It is especially effective on problem areas where bleed‑through might otherwise show through the finish.

Key capabilities

• Shellac‑base primer‑sealer with strong adhesion
• Interior use plus spot exterior applications for versatile projects
• High‑performance stain sealing to reduce bleed‑through
• Seals knots and sap streaks for a smoother underlayer
• Seals pet, smoke, and musty odors at the prep stage

Real world uses

Imagine a living space with knotty wood, stubborn stains, or a lingering odor from prior use. A coat of this primer can help establish a stable base, setting up paint to reflect color more accurately and consistently.

In areas like basements or closets where moisture and odors can be encountered, this primer can prep small zones quickly without a full repaint. The shellac base digs into difficult substrates and supports a durable topcoat after drying.

How to use

1. Shake well and clean the surface to promote even adhesion.
2. Apply thin, even coats, allowing each pass to dry before the next.
3. Finish with your chosen topcoat for interior or exterior projects as appropriate.

Tips for best results

• Test on a small area first to gauge coverage
• Use in a well‑ventilated space and protect nearby surfaces
• Ensure the surface is clean, dry, and free of loose material