Zinsser AllCoat® Interior (Solvent-Based) is a high-performance, low-odour 4-in-1 primer, stain blocker, sealer and finish - specially formulated for interior commercial environments. It’s ideal for large-scale refurbishment projects, ceiling restoration and rapid spray applications.

Designed for use on a wide range of interior substrates including plaster, concrete, wood, metal and previously painted surfaces, it eliminates the need for multiple products. AllCoat Interior SB offers outstanding stain blocking (nicotine, smoke, graffiti, water damage), dead-flat white finish and strong adhesion to glossy or hard-to-paint surfaces - all without the need for sanding.

With its smooth sprayability, non-yellowing formula and excellent coverage in just one coat, it's a trusted solution for suspended ceilings, tiles, frames and general interior upgrades.

Surface Preparation

• Surfaces must be clean, dry, and sound.

• Remove all grease, dust, loose paint, mildew and stains.

• Glossy or hard surfaces do not require sanding.

• Prime knots or resinous woods with Zinsser B-I-N  if needed.

• Wash new galvanised metal with methylated spirit, then vinegar rinse.

• Spot-prime stains, then apply full coat for best results.

Technical Data

• Application: Airless sprayer, brush, roller or pad

• Coverage: 9m² per litre

• Touch Dry: 1 hour

• Recoatable: 2 hours

• Full Cure: 7 days

• Finish: Flat, non-yellowing

• Adhesion: Bonds to glossy surfaces, Formica, metal, PVC, tile

• Stain Blocking: Water, smoke, nicotine, graffiti, food stains

• Solids by volume: >54.92%

• VOC: <350g/L

• Shelf Life: 2 years unopened

• Sizes: 1L, 2.5L, 5L, 10L

• Colours: White, Tint Base P (Pastel), Tint Base D (Deep – not in 10L)

• Spray Tip: .017" @ 2500 PSI, ¾ GPM minimum pump

• High pH Resistant: Up to pH 12.5 (ideal for plaster/concrete)

• Class 1 Wet Scrub: ISO 11998 compliant

Directions for Use

• No thinning required — ready to use.

• Apply using brush, roller or airless spray.

• Ideal airless spray conditions: room temp, short hose, ¾ GPM.

• Typically covers in one coat; porous surfaces may need two.

• Sandable after 2 hours if applying additional coats.

• Clean tools with mineral spirits immediately after use.

• Do not use on floors, roofs or exterior substrates.

Data Sheets

AllCoat Interior Solvent Based 4-1 - TDS

AllCoat Interior Solvent Based 4-1 - MSDS