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Masonry Cleaners, Sealers and Primers

Specialist masonry cleaners, sealers, and primers are designed to prepare brick, stone, and concrete surfaces for high-spec decorative masonry finishes. By removing contaminants, sealing against moisture, and providing a solid base for masonry paints, these products ensure long-lasting protection and a flawless finish. Leading manufacturers such as Remmers, Sika, Wethertex, and Hydron offer solutions suitable for intricate architectural projects, delivering both durability and design freedom. Perfect for both interior and exterior applications, these products play a vital role in preserving and enhancing masonry surfaces.

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Wethertex ST1 Quick Dry Stabilising Primer

Wethertex ST1 Quick Dry Stabilising Primer

High-performance quick dry stabilising primer. Ideal for use on masonry and previously painted surfaces. Penetrates deeply into substrates for ultra-high adhesion. Enhances the application of Wethertex masonry paints with minimal delay. Contains biocides for protection against microbial growth. High vapour permeability for breathable...

Price £27.48 (incl. VAT)
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Rust-Oleum Mathys Primer 44 HS | Protective Multi-Surface Primer

Rust-Oleum Mathys Primer 44 HS

Available in grey. Designed for stabilising loose particles on brittle or weathered roofs, floors, and walls. For porous mineral substrates. Flexible, withstands temperature changes, offers quick water resistance. Professional use only. VOC compliant.

Price £82.87 (incl. VAT)
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SmartSeal Brick Acid Cleaner | Rawlins Paints

SmartSeal Brick Acid Cleaner

Fast acting brick and masonry cleaner. For brick, concrete and acid resistant stone. Interior or exterior use. Ready to use. Can be applied neat or diluted. Important! Only suitable for acid-resistant surfaces. Not suitable for acid sensitive surfaces such as enamel, zinc, chrome, stainless steel, polished marble and limestone,...

Price £27.76 (incl. VAT)
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Coo-Var Masonry Stabiliser | Rawlins Paints

Coo-Var Masonry Stabiliser

Clear binding and sealing solution. For unstable brick, screed, or plaster before painting. 12-hour recoat interval.

Price £19.67 (incl. VAT)
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SmartSeal Brick Sealer | Durable Brick Protection

SmartSeal Brick Sealer

Long lasting, durable sealer for exterior brickwork. Protects against water ingress and damp. Resistant to weathering and surface erosion. Lasting protection for up to 10 years. Samples available.

Price £28.97 (incl. VAT)
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Keim Soldalit Grob | Exterior Masonry Sealer | Rawlins Paints

Keim Soldalit Grob

Keim Soldalit Grob is a primary coat and filler for the Keim Soldalit system. Can be used to bridge hairline cracks and equalise the surface. Equalises differences in texture Multipurpose application Alkaline Non-flammable Water vapour permeable, microporous No solvents and plasticisers added Cradle to Cradle Certified Silver...

Price £112.50 (incl. VAT)
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SmartSeal Efflorescence Remover | Fast Acting Remover

SmartSeal Efflorescence Remover

Removes salts and mineral whiteness. For block paving, brickwork and patio slabs.

Price £26.56 (incl. VAT)
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Sikagard 552W Aquaprimer

Sikagard 552 W Aquaprimer

Sikagard 552 W Aquaprimer is one component water dispersed adhesion promoting primer for water dispersed polymer paint coatings. It is part of a system that complies with the requirements of EN 1504-2 as protective coating: Priming coat for concrete and dense mineral substrates like fibre cement, aerated concrete, gypsum and smoothing...

Price £107.30 (incl. VAT)
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Keim Granital Dilution | Mineral Masonry Paint | Rawlins Paints

Keim Granital Dilution (Special Fixativ)

A product that serves two uses; forms a binding coat to consolidate friable surfaces, such as rough concrete walls. Also act as a diluent for Keim Granital and Contact coatings. Odourless coating Weather, UV and solvent resistant Hinders fungal and mould growth Non-film forming Internal and external use Cradle to Cradle Certified...

Price £89.10 (incl. VAT)
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Tikkurila Hydrosol Masonry Primer

Tikkurila Hydrosol Masonry Primer

A water-borne masonry primer for exterior walls and used to bind and stabilise masonry and concrete surfaces prior to application of topcoats. Suitable for new or previously treated interior or exterior masonry surfaces Penetrates well into the surface Strengthens the substrate Evens out its absorbency and improves the adhesion of the...

Price £168.96 (incl. VAT)
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Keim Soldalit Fixativ | Exterior Masonry Primer | Rawlins Paints

Keim Soldalit Fixativ

Keim Soldalit Fixativ is sol-silicate binding agent and dilution for use with the Keim Soldalit system. Acts as a primer for highly absorbent substrates Weather resistant and UV resistant Non-flammable No solvents and plasticisers added Cradle to Cradle Certified Silver Consumption Rate Samples

Price £96.60 (incl. VAT)
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Keim Stone Cleaner

Keim Stone Cleaner

Keim Stone Cleaner (also known as Steinreiniger N) is a neutral, environmentally friendly, biodegradable cleaner for stone.  Suitable for mild and gentle cleaning of well-adhered dust, grease, oil and soot pollution on natural stone, concrete and render facades Appearance: Transparent liquid Density: 1.0 g/cm3 pH value: 7.1 (neutral)...

Price £200.40 (incl. VAT)
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Keim Fixativ

Keim Fixativ

Keim Fixativ is a silicate binding and fixing agent made from pure, liquid potassium silicate for use with Keim systems. Keim Fixativ reacts chemically with the surface, and is used as a binding agent for the Keim systems. Non-film forming High binding power Environmentally friendly Odourless Non-toxic Cradle to Cradle Certified Silver...

Price £82.32 (incl. VAT)
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Nu-Guard Mural Basecoat | Mural Paint for Designers

Hydron Nu-Guard Mural Basecoat

Nu-Guard Mural Basecoat is a water based coating with an excellent decorative appearance. Provides a solid background colour prior to the application of the Nu-Guard Mural Paint. Extensive colour range - Available in standard white and over 350+ RAL and British Standard colours For use on previously painted substrates such as brickwork and...

Price £92.41 (incl. VAT)
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Keim Royalan Dilution | External Mineral Paint | Rawlins Paints

Keim Royalan Dilution

Keim Royalan Dilution is used to consolidate friable surfaces as a binder coat and as dilution for KEIM Royalan and KEIM Royalan Grob, and for equalisation or reduction of the absorbency of mineral substrates. Consolidates the surface Odourless and non-toxic Weather resistant Non-film forming Non-flammable UV and solvent resistant...

Price £95.70 (incl. VAT)
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Keim Algicd Plus | Fungicide Wash

Keim Algicid Plus

Keim Algicid Plus is a non-acid fungicide wash to resist algae and micro-organism on all mineral surfaces. Keim Algicid Plus is suitable for all mineral surfaces which exhibit micro-organisms. Surfaces to be treated three hours prior to cleaning, as a preventive protection against attack of microorganisms. Easy to apply Non-flammable...

Price £76.20 (incl. VAT)
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Graphenstone Ambient Primer L42 | Consolidating and Unifying Primer

Graphenstone Ambient Primer L42

Clear, consolidating, stabilising primer; for absorbent and problem substrates. Perfect for use on limewash, distempers, cast concrete and stone. Breathable – Class 1 vapour open. Excellent coverage – 25- 35m2/L. Trace VOCs <0.1%. Interior & exterior use. Aids bond over existing paintwork. Equalises surface porosity to ease...

Price £31.51 (incl. VAT)
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Wethertex PP1 Pre-Prep Wash Coat Primer

Wethertex PP1 Pre-Prep Wash Coat Primer

20 exclusive colours prior to the application of MP44 Spray Wall Coating or AX1 Pliolite Thin Coat Render. Suitable for use on GRC, X71, bonded paint, dash, roughcast, and render surfaces. Ready-mixed, flexible, and through-coloured penetrating primer. Highly polymer modified and water repellent. Offers extra coverage and high adhesive...

Price £137.00 (incl. VAT)
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Keim Contact Plus | Mineral Masonry Paint

Keim Contact Plus

Keim Contact Plus is a highly filled silicate based priming coat, used as a bonding bridge between sound, existing coatings and Keim Mineral Paints. Equalises textures - Resistant to UV - Non-flammable - Breathable finish Cradle to Cradle Certified Silver Consumption Rate Samples

Price £110.70 (incl. VAT)
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Tor SP Clear Stabilising Sealer | Masonry Stabiliser

Tor SP Stabilising Sealer

Tor SP Stabilising Sealer is a low viscosity alkali resistant solution for binding/stabilising friable and highly porous masonry surfaces prior to finishing in conventional masonry paints, and as a sealer/surface stabiliser on bare concrete floors prior to finishing in Tortread SP Floor Paints. Urethane alkyd resin solution in low aromatic...

Price £49.87 (incl. VAT)
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Keim Granital Grob | Exterior Masonry Primer | Rawlins Paints

Keim Granital Grob

Formulated to prime previously painted surfaces, hairline cracks and variations in the texture of the surface, ready for the Granital top coat. Water repellent - UV and weather resistant Non-flammable Non-film forming - extremely vapour permeable Free from solvents and biocides Cradle to Cradle Certified Silver Consumption Rate...

Price £107.40 (incl. VAT)
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Sikagard 545 W Elastofill

Sikagard 545 W Elastofill

Sikagard 545 W Elastofill is an intermediate coat for crack bridging protective coating system. Designed as a crack-bridging intermediate coat also acting as a filler coat closing pores, cavities and blowholes. Used for protection and enhancement of concrete structures, especially outdoor exposed concrete surfaces with a high risk of cracking....

Price £363.79 (incl. VAT)
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Keim Design Fixativ | Decorative Paint

Keim Design Fixativ

A sol-silicate based primer and thinner for KEIM Design-Lasur. Used as pre-treatment for strongly absorbing substrates and as dilution for most transparent finishes with KEIM Design-Lasur. Absolutely lightfast Weatherproof Resistant to environmental influences Mineral matt Cradle to Cradle Certified Silver Consumption Rate Samples...

Price £145.50 (incl. VAT)
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Sikagard 680 S Betoncolor Clear Glaze

Sikagard 680 S Betoncolor Clear Glaze

Sikagard 680 S Betoncolor Clear Glaze is a colourless coating drying to a glossy finish, suitable as a refresher and protective coating for exposed aggregate concrete protecting against aggressive atmospheric influences and promotes a self-cleaning effect on the treated surfaces. Features and Benefits: Provides excellent weather resistance...

Price £407.38 (incl. VAT)
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Keim Silan Primer

Keim Silan Primer

Keim Silan Primer (Also known as Keim Silangrund), is a water repellent silane-based primer for use with Keim Mineral Paint Systems.  Water repellent Easy to apply Non-flammable when dry Helps resist the passage of waterborne salts Can only be applied over bare surfaces Consumption Rate Samples

Price £97.50 (incl. VAT)
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Keim I & F Grund (I.G. Primer)

Keim IF Primer (I.G. Primer)

Keim IF Primer (I.G. Primer) is a nitro-collodium, colourless primer with good water vapour permeability used to obliterate staining. High water vapour permeability. Resistance to yellowing. Water repellent. Consolidating. Highly water vapour permeable: two-coat application: sd = 0.04m. Density: 0.9g/cm3. Note: The name of this...

Price £182.10 (incl. VAT)
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Sikagard 551 S Elastic Primer

Sikagard 551 S Elastic Primer

Sikagard 551 S Elastic Primer is a primer for very dense or porous concrete surfaces or difficult application conditions.  It is a one component solvented primer for Sikagard 550 W Elastic, Sikagard 545 W Elastofill and Sikagard 675 W ElastoColor. Features and Benefits: Deep penetration Water vapour permeable Surface strengthening...

Price £440.75 (incl. VAT)
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Nu-Guard SP Tack Primer

Hydron Nu-Guard SP Tack Primer

Nu-Guard SP Tack Primer is a smooth, non–toxic, water-soluble primer, used as part of the Nu-Guard Mural Paint System. Excellent adhesion prior to the application of Nu-Guard Mural Basecoat Adhesion promoter for glazed and previously painted surfaces More Information Delivery Info

Price £155.38 (incl. VAT)
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Graphenstone Filler TX100 | Mineral Textured Primer

Graphenstone Filler TX100

Vapour open, textured silicate primer for interior and exterior use. Hides surface imperfections and different substrates. Use on mixed exterior surfaces to even out substrate texture and hide micro cracks. Breathable – Class 1 vapour open. Trace VOCs – less than 0.1%. Good coverage – 10- 14m2/L.

Price £26.51 (incl. VAT)
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Mona-Clean Mortar Cleaner

Hydron Mona-Clean Mortar Cleaner

Mona-Clean Mortar Cleaner is a specially formulated acidic cleaner designed for the effective removal of cement and mortar stains and spillages from walls and floors, especially on new build projects. For use on concrete, stone, brickwork and render Easy to apply, ready to use product that can also be diluted More Information Delivery...

Price £42.49 (incl. VAT)
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Keim Concretal Dilution | Concrete Protection Coating

Keim Concretal Dilution

Keim Concretal Dilution, for use with concrete protection coatings KEIM Concretal W and KEIM Concretal Lasur, consolodating by reacting chemically with the surface. Reacts chemically with the surface to which it is applied The product comprises of liquid potassium silicate and stabilisers Water vapour permeable Odourless and non-toxic...

Price £121.80 (incl. VAT)
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Keim Restauro Fixativ | Stone Restoration

Keim Restauro Fixativ

Keim Restauro Fixativ, a sol-silicate based binding agent for use with the Keim Restauro Lasur colour wash system on modern and historic render and stone surfaces, including brickwork and reconstituted stone and any cementitious or lime based mineral substrates. Reacts chemically with the surface Water vapour permeable Consolidates the...

Price £145.50 (incl. VAT)
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Keim Silex OH

Keim Silex OH

Keim Silex OH is an ethyl silicate stone consolidant which can be overcoated, for use on any porous mineral substrate including natural stone, sandstone and render. Density: Q = 0.992g/cm3. Flash Point: 2°C. Consumption Rate Samples

Price £279.00 (incl. VAT)
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Understanding Masonry Cleaners, Sealers, and Primers

Masonry cleaners, sealers, and primers form the foundation of a successful decorative finish. Cleaners eliminate grime, mould, and contaminants from masonry surfaces, ensuring that paint adheres correctly. Sealers protect masonry from water ingress, preserving the structural integrity of brick, stone, and concrete. Primers create a uniform surface, enabling high-spec decorative finishes that stand the test of time. These products are vital for both protective and aesthetic purposes on a variety of substrates.

 

Why Proper Surface Preparation Is Critical

The use of these products ensures that masonry surfaces are properly prepared to receive paint and other coatings. Cleaning is the first step, removing dirt and contaminants that could weaken adhesion. Primers follow to provide a stable surface that prevents peeling and cracking. Sealers then protect the substrate from environmental damage, such as moisture penetration, which can lead to long-term degradation. Without proper preparation, even the best decorative finishes can fail prematurely.

 

Applications Across Residential and Commercial Projects

These specialist cleaners, sealers, and primers are essential in preparing a wide range of surfaces, including brick, stone, and concrete. Their applications span residential homes to complex commercial and architectural projects. Whether preparing the exterior walls of a listed building or ensuring that interior masonry is protected, these products deliver reliability and superior results. They are particularly suited for projects where achieving a high-spec decorative masonry finish is the goal, offering enhanced protection and aesthetic appeal.

 

High-Spec Decorative Masonry Finishes Made Possible

Achieving a high-spec decorative masonry finish requires meticulous preparation. Products from leading manufacturers such as Remmers, Sika, Wethertex, and Hydron are specifically designed to help achieve these finishes on both small and large projects. For more intricate and elaborate architectural projects, these cleaners, sealers, and primers provide the flexibility to create unique and long-lasting designs. With these products, professionals can confidently prepare masonry surfaces for superior performance and visual impact.