Primers, Sealers & Undercoats Systems for Plaster, Brick & Wood

ACRO Industrial Paints manufactures a comprehensive range of primers, sealers and undercoats for plaster, brick, masonry and wood surfaces. The range includes bonding liquids, plaster primers, masonry sealers, wood primers and undercoat systems designed to improve adhesion, seal porous surfaces and provide a reliable foundation for decorative and protective topcoats. ACRO surface-preparation coatings are developed for residential, commercial and contractor applications in South African conditions.

Bonding Liquid

BONDING LIQUID is a penetrating bonding and stabilising primer designed for interior and exterior use on powdery, friable and highly porous new or weathered substrates. It is suitable for surfaces such as limewash, old paint, porous plaster and fillers where the surface needs to be stabilised before further coating.

The product penetrates into the substrate and helps bind weak, dusty or porous surfaces, improving surface integrity and adhesion for subsequent coatings. Once the substrate has been properly sealed and the Bonding Liquid has dried, it can be overcoated with a range of compatible ACRO water-based and alkyd-based decorative coatings.

Key benefits:

Deep penetrating bonding primer
Helps stabilise powdery and friable surfaces
Suitable for porous and weathered substrates
Good alkali resistance
Excellent penetrating and binding properties
Excellent adhesion
Suitable for interior and exterior applications
Can be overcoated with compatible water-based and alkyd-based coatings

Coverage guideline:

Approximately 10–12 m²/L
Actual coverage varies depending on substrate porosity, condition and absorption

Available in 1 L, 5 L and 20 L.

Brick & Stone Sealer

BRICK & STONE SEALER is a penetrating interior and exterior sealer designed to enhance, protect and bring out the natural colour and appearance of brick and stone surfaces. It penetrates into porous substrates to help stabilise and protect them against weathering and moisture exposure.

The sealer is suitable for properly prepared brickwork, stone, masonry and other compatible mineral surfaces where a penetrating protective treatment is required.

Key benefits:

Penetrating brick and stone sealer
Enhances the natural colour and appearance of masonry surfaces
Helps stabilise porous substrates
Good alkali resistance
Excellent penetrating and binding properties
Good adhesion
Water resistant
Weather resistant
Suitable for interior and exterior applications

Coverage guideline:

Approximately 10–12 m²/L
Actual coverage varies depending on substrate porosity, condition and absorption

Available in 1 L, 5 L and 20 L.

Plast Bond Extra Strong

PLAST BOND EXTRA STRONG is an acrylic latex bonding additive designed for use with cementitious products to improve adhesion, flexibility and water resistance. It is suitable where additional bond strength is required between new and existing plaster, concrete, brick and other compatible masonry surfaces.

PLAST BOND EXTRA STRONG can be used as a bonding and keying agent, as an adhesion promoter for new plaster and brick, and as an additive to improve the performance of plaster and concrete mixes. It can also help stabilise friable or powdery masonry surfaces when used as part of an appropriate preparation system.

Key benefits:

Acrylic latex bonding additive
Improves adhesion between new and existing surfaces
Enhances flexibility of plaster and concrete mixes
Helps improve water resistance
Suitable for plaster, concrete, brick and other cementitious surfaces
Can be used as a bonding and keying agent
Useful as an adhesion promoter for new plaster
Helps strengthen friable or powdery masonry surfaces
Quick drying
Low odour

Dilution: May be diluted with clean water where required, depending on the application and substrate condition.

Coverage guideline:

Approximately 8–10 m²/L when used as a surface-applied bonding treatment
Actual coverage varies depending on substrate porosity, condition and method of use

Available in 1 L, 5 L and 25 L.

Supabond

Bonding & Keying Agent

SUPABOND is a versatile bonding and keying agent designed to improve adhesion between new and existing building surfaces. It can be used for plastering, screeding, skimming, tiling, patching and other cement- or gypsum-based applications where improved bond strength and surface preparation are required.

SUPABOND can also be used as a primer to help consolidate friable or porous surfaces before further treatment. When used as an additive, it can improve the performance, flexibility and water resistance of compatible cementitious and gypsum-based products.

Key benefits:

Bonding and keying agent for construction surfaces
Improves adhesion between new and existing substrates
Suitable for sand-cement plaster, gypsum plaster and cement screeds
Can be used as a primer on friable and porous surfaces
Suitable for plastering, skimming, screeding, tiling and patching
Can be used as an additive in compatible cement- and gypsum-based products
Helps improve flexibility and water resistance
Can be used as a barrier coat between selected incompatible mineral surfaces

Important: Do not dilute.

Coverage guideline:

Approximately 8–10 m²/L when used as a surface-applied bonding treatment
Actual coverage varies depending on substrate porosity, condition and method of application

Available in 1 L, 5 L and 25 L.

Masonry Plaster Primer

MASONRY PLASTER PRIMER is a traditional pigmented plaster primer designed for interior and exterior use on new, weathered, porous and friable masonry surfaces. It penetrates and helps stabilise substrates such as plaster, limewash, previously painted surfaces, hardboard and fibre-cement, providing a suitable foundation for subsequent decorative coatings.

The primer offers good penetration, binding and adhesion, together with good alkali resistance. Once properly applied and dried, it can be overcoated with a range of compatible ACRO water-based and alkyd-based products.

Key benefits:

Pigmented penetrating plaster primer
Suitable for interior and exterior use
Suitable for new or weathered plaster
Suitable for hardboard and fibre-cement surfaces
Helps stabilise powdery, friable and porous substrates
Can be used on suitable limewash surfaces
Good alkali resistance
Excellent penetrating and binding properties
Excellent adhesion
Can be overcoated with compatible water-based and alkyd-based coatings

Important: May be diluted with up to 10% mineral turpentine where required to improve penetration on raw or highly porous plaster surfaces

Coverage guideline:

New or uncoated porous surfaces: approximately 7–9 m²/L
Sealed or previously painted surfaces: approximately 9–11 m²/L
Actual coverage varies depending on substrate porosity, profile and condition

Available in 1 L, 5 L and 25 L.

HI Hiding Plaster Primer

HI HIDING PLASTER PRIMER is a water-based pigmented plaster primer designed for interior and exterior use on new, weathered, porous and friable masonry surfaces. It helps seal and stabilise substrates such as plaster, hardboard, fibre-cement, limewash and previously painted surfaces while providing improved hiding and a suitable foundation for subsequent decorative coatings.

The primer is based on a resin emulsion and can be diluted with clean water where required, making it a practical and cost-effective option for porous substrates. Once properly applied and dried, it can be overcoated with a range of compatible ACRO water-based and alkyd-based coatings.

Key benefits:

Water-based pigmented plaster primer
High hiding and good opacity
Suitable for interior and exterior use
Suitable for new or weathered plaster
Suitable for hardboard and fibre-cement surfaces
Helps stabilise powdery, friable and porous substrates
Can be used on suitable limewash surfaces
Good alkali resistance
Excellent penetrating and binding properties
Excellent adhesion
Can be overcoated with compatible water-based and alkyd-based coatings
May be diluted with clean water where required

Coverage guideline:

Approximately 6–8 m²/L
Actual coverage varies depending on substrate porosity, profile, condition and degree of dilution

Available in 1 L, 5 L and 25 L.

Universal Undercoat

UNIVERSAL UNDERCOAT is an alkyd-based undercoat formulated for interior and exterior use on a wide range of properly prepared household and building surfaces. It provides good adhesion, hiding power and a smooth, low-gloss finish, creating a suitable foundation for subsequent decorative topcoats.

It can be applied to suitably prepared hardboard, fibre-cement boards, primed metal and wooden substrates. Once dry, UNIVERSAL UNDERCOAT can be overcoated with a range of compatible ACRO water-based and alkyd-based decorative coatings.

Key benefits:

Alkyd-based universal undercoat
Suitable for interior and exterior use
Good hiding power and opacity
Excellent adhesion
Smooth, low-gloss finish
Easy to sand when dry
Suitable for hardboard and fibre-cement boards
Suitable for primed metal
Suitable for wooden substrates
Easy, low-mess application
Can be overcoated with compatible water-based and alkyd-based coatings

Coverage guideline:

New or uncoated surfaces: approximately 7–9 m²/L
Sealed or previously painted surfaces: approximately 9–11 m²/L
Actual coverage varies depending on substrate porosity, profile and condition

Available in 1 L, 5 L and 25 L.

White Wood Primer

WHITE WOOD PRIMER is a traditional alkyd-based primer formulated for interior and exterior wooden surfaces. It provides a smooth, well-adhered base coat with good hiding power, helping prepare timber for subsequent decorative coatings and long-term protection.

Once properly applied and dried, WHITE WOOD PRIMER can be overcoated with a range of compatible ACRO solvent-based and water-based decorative products.

Key benefits:

Alkyd-based wood primer
Suitable for interior and exterior timber
Smooth priming finish
Excellent adhesion
Good hiding power
Easy, low-mess application
Helps prepare wood for subsequent decorative coatings
Suitable for use in demanding South African conditions
Can be overcoated with compatible solvent-based and water-based coatings

Coverage guideline:

New or uncoated timber: approximately 7–9 m²/L
Sealed or previously painted surfaces: approximately 9–11 m²/L
Actual coverage varies depending on timber porosity, profile and condition

Available in 1 L, 5 L and 25 L.