HB42 PS1 Shellac Primer/Sealer White
A premium white shellac primer-sealer, HB42 PS1 Primer-Sealer Stain Block for high performance permanent stain blocking. The Ultimate Stain Blocker in one coat! New and Improved formula released May 2025 - whiter and more opaque.
HB42 PS1 is suitable for interior surfaces and to spot exterior surfaces. Providing a rapid matt finish that covers stains in one coat! Ideal for use on all interior woodwork, plaster, glossy and hard to paint surfaces such as tiles, varnish, or gloss paints. Block odours including mould, smoke and nicotine. Seals in stains from grease, water, smoke, wood knotting and sap residue, crayon, ink, lipstick, rust and more. Can also be used to seal porous surfaces so topcoat paints have better coverage.
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faq's.
Nicotine, smoke, water marks, mould staining, tannin bleed and graffiti — plus associated odours. Ideal for renovation work in previously occupied properties.
Usually one. For severe staining, a second coat may be needed — re-coatable in just 45 minutes.
Yes — adheres to tiles, gloss paint and varnish without sanding, making it a practical key coat for difficult redecorations.
It's primarily an interior product but can spot-treat exterior surfaces. For full exterior stain blocking, HB42 PS3 is the better choice.