Best Brick Sealers of 2025

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Brick sealers are a type of protective coating that are applied to brick surfaces to help prevent damage from weathering, moisture, and other elements. These sealers are designed to penetrate the surface of the brick, creating a barrier that helps to stabilise the material and prevent cracking and erosion over time. They are available in a range of formulations to suit different types of brick and different environmental conditions, and can help to enhance the colour and appearance of the brick while also extending its lifespan. For those looking to protect their brickwork, brick sealers are a highly recommended option.
At a Glance: Our Top Picks
Top 10 Brick Sealers
Smartseal 10 Year Brick Waterproofer
The Smartseal Brick Sealer provides long-lasting damp-proofing protection for your exterior brick surfaces. With its advanced formulation, you can enjoy up to 10 years of exceptional waterproofing capabilities, ensuring your brickwork remains in top condition. It also boasts enhanced water repellency, modifying how the surface reacts to liquids, which helps to prevent unwanted stains. Furthermore, this solvent-free solution effectively repels oil and inhibits algae and lichen growth, allowing you to maintain the beauty of your masonry effortlessly.
Smartseal Climashield 25-Year Waterproof Sealant
Smartseal Climashield Sealant is a premium waterproofing solution designed to protect your brickwork and masonry from penetrating damp. Its long-lasting formula creates a robust barrier against moisture, ensuring your external structures remain safe from water damage. The high-performance brick sealer offers up to 25 years of protection, making it a reliable choice for homeowners. With a unique "invisible" finish, it maintains the original appearance of your surfaces while providing effective waterproofing. Easy to apply, it allows you to achieve excellent coverage with minimal effort.
Hotspot Brick & Stone Sealer 500ml
The Hotspot Sealer 500ml is a reliable choice for protecting your brick and stone surfaces. This product comes in a convenient 500ml size, making it easy to handle and apply. With its effective sealing capabilities, it helps prevent water damage and stains, enhancing the longevity of your surfaces. You will appreciate the simplicity of having just the product included, which ensures you can start your sealing project without any unnecessary extras.
Siramico Coatings Multi-Surface Water Sealer
The Siramico Water Sealer offers exceptional waterproofing by creating an invisible barrier that prevents water from penetrating various surfaces. This feature is crucial for protecting your brick, stone, and wood from moisture damage, mould, and rot. With its durability, you can ensure long-lasting protection against rain and snow, maintaining the structural integrity of your property. Its versatility allows you to use it on basements, foundations, and even outdoor furniture, making it a practical choice for various applications. Additionally, the easy application with a brush, roller, or sprayer saves you time and effort.
Polar Premium Leak Seal Clear Paint 500ml
Polar Leak Sealant is an effective solution for sealing leaks and cracks instantly. Its waterproof seal forms a durable membrane, protecting your surfaces from water damage, which is especially beneficial during harsh weather. You can achieve repairs in just one coat, saving you time and effort. The quick-drying formula means minimal downtime, allowing you to get back to your routine promptly. Additionally, this sealant is easy to apply without needing a primer, making it suitable for both DIY enthusiasts and professionals alike.
Pro-Kleen PatioSeal Matt Sealer for Outdoors
Pro-Kleen PatioSeal is an effective patio sealant designed for Indian sandstone, concrete, and brick surfaces. It provides a clear matt finish that enhances your outdoor areas, making them look pristine. This product is especially useful for preventing stains from oil, fat, and grease, keeping your barbecue areas tidy. With a waterproof seal, it protects your flooring from weathering and staining, ensuring long-lasting durability. You can cover up to 50m² with just one 5-litre bottle, making it a cost-effective choice for your hard floors.
StoneCare4u Essential Brick Sealer for Protection
The StoneCare4u Brick Sealer is a highly effective solution for protecting your brickwork, masonry, and concrete. Its acid-free, alkaline-based formula ensures that your surfaces remain undamaged while receiving a thorough clean. You will appreciate the fast results, as it effectively removes algae, lichen, and dirt, making your driveway look brand new. The easy application process allows you to treat the surface before scrubbing, and by keeping it damp for two hours, you can maximise the cleaner's effectiveness.
Shieldon Protects Brick Sealer - Waterproof & Breathable
The Shieldon Brick Sealer is a high-quality, professional product designed to protect your brick surfaces. Its powerful water-repellent nano-particles create a transparent, waterproof layer that not only repels water but also resists dirt and staining. With its solvent-free formula, you can apply it without worrying about unpleasant smells. The sealer offers long-lasting protection, with up to five years for vertical surfaces, ensuring your bricks remain in excellent condition. Additionally, it is suitable for both interior and exterior use, making it versatile for all your sealing needs.
Sika Sikasil 825 Sealant for Joints
The Sika Sikasil 825 Sealant is ideal for high-moving joints, allowing you to seal gaps up to 50mm wide, such as around doors and windows. Its flexible, non-slump formula ensures it remains stable during expansion. You’ll appreciate the increased tooling time of 30 to 45 minutes, giving you ample opportunity to achieve a smooth, professional finish. Once cured, this sealant is completely weatherproof, making it suitable for external applications, ensuring long-lasting protection against the elements.
N-Virol 25LTRS Water Repellent Masonry Sealer
The N-Virol Masonry Sealer is a high-quality solution designed to penetrate brick, stone, concrete, and cement. With just a single coat application, you can cover up to 8 square metres, saving you time and effort. This sealer offers superior performance compared to solvent-based options, ensuring lasting protection against rain and water damage. Additionally, it helps to reduce heat loss through walls, which can lead to savings on your energy bills. You can even overpaint it with breathable masonry paint for added versatility.
Frequently Asked Questions (FAQs)
1. What is the best sealer to use on brick?
Silane Siloxane sealers are the best sealer to use on all types of masonry - stone, brick, pavers, and concrete. They penetrate into the surface where they chemically react to form a hydrophobic barrier within the pores.
2. Is sealing brick a good idea?
The Brick Development Association states, 'We believe the use of sealants and water repellent treatments on brickwork is totally unnecessary and take the view that properly specified and built work performs perfectly satisfactorily in resisting water penetration by wind driven rain, without their need.
3. How long do brick sealers last?
Typically, the best brick sealers should last around 7 to 10 years before having to be reapplied. This gives you a long life of waterproofing.
4. Does exterior brick need to be sealed?
Brick is extremely porous, so it can absorb water like a sponge, and over time, water absorption can cause crumbling and cracking in the brick. Apply a sealer to your exterior brick for protection against water damage and minimize moss growth.
During our brick sealer research, we found 58 brick sealer products and shortlisted 10 quality products. We collected and analyzed 34,111 customer reviews through our big data system to write the brick sealers list. We found that most customers choose brick sealers with an average price of £28.97.
The brick sealers are available for purchase. We have researched hundreds of brands and picked the top brands of brick sealers, including SmartSeal, Hotspot, SIRAMICO COATINGS, Polar Specialist Coatings, Pro-Kleen. The seller of top 1 product has received honest feedback from 505 consumers with an average rating of 4.7.

Corey Philips is an electrician and lighting expert. He graduated from the University of Birmingham in 2012 with a Bachelor's degree in electrical and electronics engineering. Corey is a specialist contractor in lights. He sells and installs and recommends lights and lamp sheds, and other lights accessories. Aside from that, Corey is vast in installing and maintaining electrical appliances like air conditioners, water heaters, and the likes.