Benjamin Moore INSL-X® Max Block Stain-Blocking Primer – White, Gallon

A stain-blocking foundation before your finish coat

Prepare stained surfaces for a fresh decorative finish with Benjamin Moore INSL-X Max Block Primer from Bespoke Decor NI. This water-based acrylic primer is designed to block household stains and odours, including water, smoke and nicotine stains, on suitable, correctly prepared surfaces.

When an old mark threatens to spoil a freshly decorated room, choosing the right preparation system matters as much as choosing the colour. Max Block provides a specialist priming step before your compatible topcoat, rather than relying on finish paint alone to hide troublesome staining.

Why choose Max Block?

• Stain and odour blocking: formulated for a range of household stains and odours.
• Tannin and knot sealing: the product information highlights tannin-bleeding woods such as cedar and redwood, and sealing wood knots.
• Adhesion: suitable for specified vertical and horizontal surfaces, subject to the recommended coating system.
• Water-based acrylic formulation: with soap-and-water clean-up.
• Quick drying: the label lists topcoating in one hour under suitable conditions.
• Interior and exterior use: on approved substrates with appropriate preparation.

Colour and pack size

This listing is for White in a Gallon pack. Max Block is a primer, not a decorative finish paint. Confirm the recommended topcoat and complete coating system for your project.

Suitable surfaces and projects

The supplied product information lists wood, plaster, drywall, masonry, brick and concrete, alongside selected metal and vinyl substrates. Check the current technical data sheet for your precise surface and existing coating. Do not assume that every metal, plastic, floor or deck is suitable simply because a broad material or project category is listed.

Preparation before priming

Identify the stain and resolve its cause first, especially where water damage or damp is involved. Follow the manufacturer's cleaning, drying, repair and surface-preparation instructions. Check the specified treatment for knots, tannin bleed and persistent stains, and test the recommended system where appropriate before proceeding across a larger area.

Application, coverage and drying

Apply by brush, roller or spray according to the current instructions. The supplied specifications give indicative coverage of 300–400 square feet per gallon, a 30-minute dry time and a one-hour recoat time. Coverage depends on porosity and application; drying and stain-sealing requirements depend on conditions. Confirm the current technical data sheet before estimating quantities or topcoating.

Frequently asked questions

Can it help with water, smoke and nicotine stains?

These are listed uses. Results depend on the stain, substrate, preparation and application system. Fix any active moisture source and follow the manufacturer's specific stain-blocking guidance.

Can it seal knots and tannin bleed?

The product information lists knot sealing and tannin-stain blocking, including use on woods such as cedar and redwood. Follow the current instructions for the timber and coating system involved.

Will it remove the cause of an odour or damp problem?

No. Blocking residual staining or odours is not the same as removing contamination or repairing a moisture problem. Resolve the underlying cause before coating.

Do I need a finish coat?

Yes. This is a preparation primer to use beneath a compatible topcoat as directed, not a substitute for your final decorative coating.

Contact Bespoke Decor NI with details of the surface and staining if you need help finding the relevant product guidance before ordering.

The AI-generated preparation images are illustrative inspiration only, not photographs of verified Max Block applications or demonstrations of stain blocking, odour blocking or coverage.