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Sealers & Stabilisers: Effective Interior Wall Sealer Paint

At PaintWell, we offer a comprehensive selection of wall sealer products designed to protect and stabilise your interior and exterior surfaces. Our wall sealer paint options are perfect for preparing surfaces before painting, ensuring a smooth, long-lasting finish. Read more

Whether you need an interior wall sealer for plaster, concrete, or brick walls, our range includes solutions that prevent moisture ingress, reduce dusting, and stabilise porous surfaces. From garage wall sealers to stone wall sealers, we have products to suit every application. By creating a strong, durable base, our wall sealers enhance the adhesion and performance of your chosen topcoat, making them an essential part of any decorating project.

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  • Zinsser Gardz Sealer
    Zinsser Gardz Sealer
    As low as £8.99 £7.49

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  • Zinsser Watertite Paint 5 Litre
    Zinsser Watertite Paint White 5 Litre
    £83.99 £69.99

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  • Zinsser Covers-Up Stain Sealing Spray 400ml
    Zinsser Covers-Up Stain Sealing Spray White 400ml
    £10.00 £8.33

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    Zinsser Peel Stop Clear
    As low as £10.00 £8.33

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  • Zinsser Sealcoat 1 Litre
    Zinsser Sealcoat 1 Litre
    £28.99 £24.16

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  • Thompsons Water Seal 5 Litre
    Thompsons Water Seal 5 Litre
    £23.27 £19.39

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  • Blackfriar Interior Seal Damp Clear
    Blackfriar Interior Seal Damp Clear
    As low as £6.49 £5.41

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  • Ronseal One Coat Damp Seal White
    Ronseal One Coat Damp Seal White
    As low as £8.99 £7.49

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  • Macpherson Stabilising Solution Clear 5 Litre
    Macpherson Stabilising Solution Clear 5 Litre
    £52.10 £43.42

    Out of stock

  • Liberon Colour Enhancer Stone Floor Sealer - Clear
    Liberon Colour Enhancer Stone Floor Sealer - Clear
    As low as £19.99 £16.66

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  • Rustins Stabilising Solution Clear - 500ml
    Rustins Stabilising Solution Clear - 500ml
    £7.25 £6.04

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  • Rustins Damp Seal Clear
    Rustins Damp Seal
    As low as £6.49 £5.41

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  • Rustins Poly Floor Seal Satin Clear
    Rustins Poly Floor Seal Satin Clear
    As low as £16.99 £14.16

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  • Blackfriar Professional Water-Based Floor Sealer Clear 5 Litre
    Blackfriar Professional Water-Based Floor Sealer Clear 5 Litre
    £35.99 £29.99

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  • Polyvine Stone And Brick Protector - Clear - 1 Litre
    Polyvine Stone And Brick Protector - Clear - 1 Litre
    £29.02 £24.18

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FAQs

  • What is a wall sealer and why is it important?

    A wall sealer is used to prepare and protect surfaces before painting or wallpapering. It seals porous materials, reduces moisture ingress, and stabilises the surface, providing a solid base for your finishing coat.

  • Can I use wall sealer paint on brick surfaces?

    Yes, brick wall sealer is specifically designed to penetrate and protect brick surfaces. It helps prevent water ingress, stops dusting, and stabilises the surface. For interior brick walls, use an interior brick wall sealer to maintain the look and integrity of the material.

  • What is the best interior wall sealer for plaster?

    For plaster surfaces, a plaster wall sealer or PVA wall sealer is ideal. These products help to prevent the surface from absorbing too much paint and provide a better base for adhesion, ensuring a smooth and even finish.

  • Can I use a wall sealer in bathrooms?

    Yes, bathroom wall sealer is formulated to resist moisture and prevent mould growth. It’s ideal for areas exposed to high humidity, such as showers and bathroom walls, ensuring a durable, moisture-resistant surface.

  • How do I use a wall crack sealer?

    A wall crack sealer is used to fill and stabilise cracks before applying a sealer or paint. Clean the area and apply the crack sealer with a putty knife, smoothing it out before allowing it to dry. This will create a stable surface for painting or wallpapering.

  • What’s the difference between a wall paint sealer and a wall sealer for wallpaper?

    A wall paint sealer is used to prime the surface before painting, enhancing adhesion and preventing stains from bleeding through. A wall sealer for wallpaper is applied to seal porous walls and create a suitable base for wallpaper, ensuring it adheres properly and lasts longer.

  • Can I use clear wall sealer on exterior surfaces?

    Yes, a clear wall sealer can be used on exterior surfaces like stone, brick, and concrete. It helps protect against water ingress and weather damage while preserving the natural look of the material.

  • What is the best wall sealer for basements?

    For basements, a basement wall sealer is recommended to prevent moisture penetration and mould growth. Choose a waterproof wall sealer that’s designed for use on concrete or masonry surfaces to create a strong, protective barrier.

  • Can I use a stone wall sealer on sandstone?

    Yes, a sandstone wall sealer is specially formulated to protect porous stone surfaces from water and dirt. It helps maintain the natural appearance of the stone while providing a durable barrier against environmental damage.

  • Do I need a wall sealer before painting?

    Using a wall sealer before painting is highly recommended, especially on porous or chalky surfaces. It helps the paint adhere better, reduces the number of coats needed, and ensures a long-lasting finish.