10 Best Acrylic Paint Sealant in The UK

Last updated on 15/08/2025
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1
9.8
Exceptional
Gloss Varnish for Acrylic Painting, 2 x 100ml Acrylic Varnish, Acrylic Paint Sealer Keeps Paintings from Yellowing, Cracking, and Dust, Maintains Permanent Color (Gloss+Matte)
EIGTWEN
Gloss Varnish for Acrylic Painting, 2 x 100ml Acrylic Varnish, Acrylic Paint Sealer Keeps Paintings from Yellowing, Cracking, and Dust, Maintains Permanent Color (Gloss+Matte)
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Why We Love It
  • Protects paintings from aging.
  • Non-toxic and safe.
  • Ideal for varied artworks.
Main Highlights
  • Gloss Varnish for Acrylic Painting: Acrylic varnish can make the acrylic painting not yellowing, not wear and tear, aging-resistant, and maintain permanent color, so that your paintings are not eroded by the years
  • Gloss Varnish for Acrylic Paint: Acrylic varnish gloss will form a layer of glossy effect on acrylic paintings, the protective film can prevent dust, dirt and moisture, non-toxic acrylic clear coat has been health-based, is the first choice for safety-conscious artists, designed specifically for acrylic paintings
  • Widely Used: Acrylic varnish can be used for acrylics painting, oils, drawings, etc, clear gloss paint protects your paintings and is ideal for all kinds of artwork!
  • Steps of Use: After the painting is finished, wait for the painting to dry completely, after the painting is dry, apply clear acrylic sealer on the surface of the painting with a brush, wait 24 hours for complete drying and you have a beautiful glazed painting protected by acrylic paint gloss finish!
  • After-Sales Service: If you encounter any problems in the process of use, please feel free to contact us, we will solve the problem for you and provide you with quality after-sales service!
9.8
Exceptional
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Best Value
2
9.7
Exceptional
Varnish For Acrylic Paint 250 ml Gloss Varnish | Acrylic Varnish | Varnish For Stones | Gloss Varnish For Acrylic Paint | Acrylic Varnish Gloss | Clear Varnish For Craft | Acrylic Paint Varnish
7 Artists
Varnish For Acrylic Paint 250 ml Gloss Varnish | Acrylic Varnish | Varnish For Stones | Gloss Varnish For Acrylic Paint | Acrylic Varnish Gloss | Clear Varnish For Craft | Acrylic Paint Varnish
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Why We Love It
  • Safe and water-based varnish.
  • Protects against UV damage.
  • Smooth and even finish.
Main Highlights
  • SAFE WATER-BASED ACRYLIC VARNISH: the water-based clear gloss varnish contains no solvents that could destroy the binding agent in the acrylic paint and dissolve the image.
  • SUITABLE FOR ARTWORKS: this craft varnish is perfect for final treatment of acrylic images. It can be used as a clear varnish for rock painting, clear varnish for wood, model varnish and for coating acrylic paints on different surfaces.
  • RELIABLE PROTECTIVE SHIELD: both acrylic gloss varnish and acrylic matt varnish protect the painting from dirt, yellowing and damage caused by UV rays. Heat resistant varnish. Many lacquered items can be used in everyday life.
  • EASY TO USE: both gloss acrylic varnish and acrylic matt varnish are transparent. Apply the varnish thinly to the well-dried image surface with a brush. Use it as a clear gloss paint.
  • SMOOTH FINISH: the acrylic surface is not always uniform and smooth. By sealing with clear acrylic varnish, the roughness decreases. The unevenness of the acrylic paint is balanced and a smoother appearance is created.
9.7
Exceptional
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3
9.5
Superb
Mont Marte Gloss Acrylic Varnish Signature 250ml (8.5 US fl. oz), Seals and Protects Artworks from Dust, Light, Archival Finishing, Dries Clear
MONT MARTE
Mont Marte Gloss Acrylic Varnish Signature 250ml (8.5 US fl. oz), Seals and Protects Artworks from Dust, Light, Archival Finishing, Dries Clear
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Why We Love It
  • Enhances acrylic paint vibrancy.
  • Protects artworks from dust.
  • Dries to high gloss.
Main Highlights
  • Finishing varnish for acrylic paintings
  • Dries in approx. 30mins to a transparent, high gloss finish
  • Seals and protects artworks from dust, helping them to last longer
  • Enhances acrylic paint vibrancy
  • Non toxic and water based for easy cleaning (when wet)
9.5
Superb
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4
9.5
Superb
Cromar Grey Cromapol Acrylic Waterproofing Roof Sealant Fibre Reinforced Roof Coat 5Kg
Ashbrook Roofing
Cromar Grey Cromapol Acrylic Waterproofing Roof Sealant Fibre Reinforced Roof Coat 5Kg
Why We Love It
  • Instant protection in one coat.
  • Fibre reinforced for durability.
  • Personalization with color options.
Main Highlights
  • One Coat Instant Protection
  • Waterproofing Roof Sealant
  • Fibre Reinforced
  • Available in White, Black, Clear and Grey
9.5
Superb
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5
9.4
Superb
Save 23%
Air Dry Clay Glaze Sealant, Clear Clay Varnish for Craft Pottery, Scratch Resistant, Watertight & Gloss Finish
kintsukuroi
Air Dry Clay Glaze Sealant, Clear Clay Varnish for Craft Pottery, Scratch Resistant, Watertight & Gloss Finish
23% OffFree Shipping
Why We Love It
  • Enhances air-dry clay durability.
  • Provides waterproof and glossy finish.
  • User-friendly application.
Main Highlights
  • Designed For Air Dry Clay: Still worried about your airdry clay creations being poorly water-proof and easily scratched? Try our specially designed clay varnish for air-drying clay. The air-dry clay polymer clay glaze will help your crafts to be water proof and scratch-resistant, adding a gloss look that you will love
  • Watertight Varnish: You don't need a kiln to make beautiful pottery that is watertight at home! Air dry clay varnish allows your pieces to withstand the pottery with water without having to worry about it
  • Anti-Scratch & Glossy: The clay glaze protects your pottery well, and resists scratches, you can also get a beautiful gloss finish! It's a great surprise, give it a try
  • How To Use: Apply a few thick coats of clay sealer to the completely dry air dry clay and wait for it to dry completely between 24 hours, for a beautiful glossy effect
  • Note: 50ML capacity. Although the varnish can come in with water, They are not suitable for food or dishwasher use
9.4
Superb
Save 23%
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6
9.3
Superb
Nicpro Air Dry Clay Varnish (4.06 oz, 120 ml), Air Dry Clay Glaze Sealant for Pottery, Air Dry Clay, Acrylic Paint, Waterproof Prevent Clay Sculpture Scratches, Cracking, Wear- High Gloss Effect
Nicpro
Nicpro Air Dry Clay Varnish (4.06 oz, 120 ml), Air Dry Clay Glaze Sealant for Pottery, Air Dry Clay, Acrylic Paint, Waterproof Prevent Clay Sculpture Scratches, Cracking, Wear- High Gloss Effect
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Why We Love It
  • Long-lasting protection for artwork.
  • High gloss finish enhances clarity.
  • Non-toxic formula for safe use.
Main Highlights
  • AIR DRY CLAY VARNISH: Nicpro Clay Varnish (4.06 oz / 120 ml) is designed specifically for clay artwork and provides long term sealed and strengthened protection. Effectively protects against scratches, cracks, dust, paint loss, yellowing and waterproof.
  • HIGH GLOSS EFFECT: Our clay varnish has the proper viscosity to apply smoothly and dries to a transparent, strong, bright protective layer to keep your clay artwork crystal clear effect for long time.
  • EASY TO USE: After the clay work has dried, use a soft, flat paint brush to take a small amount of varnish and apply a thin, even layer to the clay work; 2-3 coats are recommended, with a drying time of about 1 hour between coats.
  • SAFE AND NON TOXIC: Our clay varnish is made with a non-toxic formula, adheres to strict safety standards and is suitable for teens and adults of all ages. Note: It is not suitable for food utensils or dishwashers use.
  • WIDE APPLICATION: The clay glaze sealant is suitable for air dry clay, polymer clay, pottery clay, plaster, ceramics, wood, metal, clay sculpture, acrylic paint, jewelry, simulated crafts etc, provide a glossy protective film for your artwork, ensuring a long-lasting attractive look. Ideal for professional artists or hobbyists.
9.3
Superb
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7
9.1
Superb
Air Dry Clay Glaze - 200ml Clay Varnish for Air Drying Clay, Gloss Varnish for Acrylic Painting, Pottery Glaze Clay Sealant to Prevent Scratches, Wear, Cracking - Non-Toxic, Enhance Colour Vibrancy
Limino
Air Dry Clay Glaze - 200ml Clay Varnish for Air Drying Clay, Gloss Varnish for Acrylic Painting, Pottery Glaze Clay Sealant to Prevent Scratches, Wear, Cracking - Non-Toxic, Enhance Colour Vibrancy
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Why We Love It
  • Enhances colour vibrancy beautifully.
  • Protects artworks from damage.
  • Safe and non-toxic formula.
Main Highlights
  • GLOSS VARNISH FOR AIR DRY CLAY - Enhance your air dry clay projects and Acrylic Painting with our specially formulated varnish that offers durable, waterproof, and scratch-resistant protection. It forms a hard, protective film to prevent cracking and maintains a beautiful appearance for years. Perfect for artists and hobbyists, it ensures long-lasting beauty and a professional-grade finish.
  • DURABLE, LONG-LASTING BEAUTY - Our high-gloss air dry clay glaze delivers a brilliant, enduring shine for artworks and ceramics. It creates a crystal-clear protective film that resists yellowing, preventing scratches and abrasions. This varnish guarantees your creations will shine beautifully while providing durable protection, enhancing the visual appeal of your projects.
  • VERSATILE APPLICATIUON - This clay glaze is suitable for various surfaces, including air dry clay, plaster, ceramics, and wood. It’s ideal for sealing paintings and mixed media artworks, delivering exceptional results for all skill levels. The versatility of our varnish empowers artists to explore their creativity across multiple mediums with confidence.
  • SAFE & NON-TOXIC - Our non-toxic glaze is safe for artists, meeting stringent safety standards. It provides a superior protective layer and glossy finish, allowing you to focus on your creative expression without worry. However, it’s important to note that this product is not intended for food contact or dishwasher use, ensuring a safe crafting experience.
  • SIMPLY STEPS TO USE - Achieve a professional finish with our easy 3-step process: 1) Apply a thick layer of white acrylic primer to a dry clay piece and let it dry. 2) Paint the primed piece and allow it to dry thoroughly. 3) Apply the varnish evenly and let it cure for 24 hours. This straightforward method guarantees a flawless, durable, and glossy finish for your artwork.
9.1
Superb
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8
9.0
Superb
Save 22%
Liquitex Professional Acrylic Varnish, High Gloss, 118 ml
Liquitex
Liquitex Professional Acrylic Varnish, High Gloss, 118 ml
22% OffFree Shipping
Why We Love It
  • Seals and protects artwork.
  • Works with various mediums.
  • Suitable for any surface.
Main Highlights
  • FINAL PART - A varnish is to seal and protect your finished work from dirt, dust and UV damage.
  • COMPATIBLE - This varnish can be used with Liquitex professional acrylic colours, inks, sprays, markers and mediums
  • VERSATILE - Liquitex Varnish can be used on almost any painting surface, from paper and canvas to wood, leather, silk and plastics.
  • MULTIPURPOSE - They can be used for a variety of techniques such as calligraphy, watercolor painting, airbrush, screen printing, brushwork etc.
  • CONTENTS - Liquitex Professional Varnish with High Gloss finish in 118 ml bottle
9.0
Superb
Save 22%
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9
9.0
Superb
Air Dry Clay Glaze Set - 2x100ml High Gloss Matte Varnish Sealant, High Luster, Prevent Scratch Resistant, Yellowing, Waterproof - Clay Paint Kit for Pottery, Acrylic Painting, Polymer Clay
Vividye
Air Dry Clay Glaze Set - 2x100ml High Gloss Matte Varnish Sealant, High Luster, Prevent Scratch Resistant, Yellowing, Waterproof - Clay Paint Kit for Pottery, Acrylic Painting, Polymer Clay
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Why We Love It
  • Professional protection for clay creations.
  • Versatile for multiple surfaces.
  • Safe and easy to use.
Main Highlights
  • Professional Protection for Air Dry Clay: Our air dry clay varnish creates a durable, waterproof seal that resists scratches, cracks, yellowing and moisture. Achieve a high gloss or matte finish to preserve your clay creations while enhancing their vibrancy. Ideal for DIY pottery, sculptures and crafts.
  • Complete Clay Glaze Kit: Includes 100ml gloss varnish + 100ml matte varnish + 2 brushes for versatile application. Create waterproof pottery without a kiln – perfect for polymer clay, air-dry projects, and multi-surface use.
  • Scratch-Resistant & Long-Lasting Shine: Dries clear with a smooth, glossy or matte finish that protects against wear. Clay paint maintains color integrity, preventing yellowing. Use as a clay sealer for waterproof pottery, decorative pieces,acrylic painting.
  • Safe and Easy to Use: Crafted with non-toxic materials and compliant with safety standards, this Gloss and Matte Varnish ensures a worry-free creative experience for artists of all levels. Simply apply to dry clay, let it dry, and enjoy a flawless, high glossy or matte finish — no special tools or techniques needed. Perfect for beginners and experts alike. (Note: Not for food utensils or containers.)
  • Versatile Application: Suitable for a wide range of surfaces, including clay, ceramics, wood, plaster, painting and more, our air dry clay tools is perfect for sealing and protecting different types of artwork. Whether you’re working on pottery clay, paintings, or crafts, this glaze delivers exceptional results every time.
9.0
Superb
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10
8.9
Excellent
Polar Flawless Clear Lacquer Spray - 400ml - Matt Finish - Non-Yellowing & Scratch Resistant - Interior & Exterior Surfaces for Wood, Metal, Plastics, Glass & Ceramics
Polar Specialist Coatings
Polar Flawless Clear Lacquer Spray - 400ml - Matt Finish - Non-Yellowing & Scratch Resistant - Interior & Exterior Surfaces for Wood, Metal, Plastics, Glass & Ceramics
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Why We Love It
  • High-quality, professional-grade lacquer.
  • Resilient and UV protected.
  • Express dry, easy application.
Main Highlights
  • High Quality Flawless Lacquer: Polar Flawless Clear Lacquer Spray paint offers a professional-grade, clear acrylic coating with quick-drying properties. It is non-yellowing, providing a long-lasting, flawless matt finish on both bare and painted surfaces, indoors or outdoors
  • UV Protection & Scratch Resistant: This solvent-based clear varnish spray offers robust protection against environmental and chemical damage. It is scratch-resistant and resilient to water and salt spray, requiring minimal maintenance. Ideal for protecting wood and maintaining the shine and strength of exterior surfaces on motorbikes and bicycles
  • Multi-Purpose Surface Compatibility: Our clear coat spray paint is suitable for a variety of surfaces, including wood, metal, plastic, glass, and unglazed ceramics. It can be applied over all water-based base coats, ensuring a strong finish. It shields visible exterior automobile surfaces from rust and corrosion due to daily exposure
  • Easy to Use & Long Lasting: Designed for user-friendly application and persistent results, our lacquer paint spray is easy to apply and clean up. For complete and uniform coverage, apply 2 to 3 coats, waiting 30 minutes between each. It dries quickly, usually within 15 to 30 minutes, ensuring efficient application and a superior finish
  • Attractive Finish: Our 400ml spray lacquer delivers exceptional quality in Gloss, Satin, and Matt finishes, covering up to 2m2. Perfect as a topcoat sealer, or a spray lacquer for wood, it ensures a smooth application and enduring protection
8.9
Excellent
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