10 Best Stone Sealers 2025 in the UK

The Raincheck Water Seal is a versatile stone-sealer that stands out for modifying and lining surfaces to create a durable, water-resistant barrier. This product is particularly effective for stone, brick, mortar, and concrete surfaces. Its silicone-based, breathable formula allows walls to breathe while preventing water from penetrating, which is beneficial for long-term maintenance of the substrate’s natural appearance. A key strength is its eco-friendly, solvent-free composition with low VOC content, making it a healthier choice for users and the environment. It also boasts quick drying times and minimal odor, which can enhance the application experience.

In terms of application, the Raincheck Water Seal is user-friendly, as it can be applied using a brush, roller, or sprayer. This versatility is a significant advantage for both DIY enthusiasts and professionals. The product’s ability to bridge hairline cracks and resist UV damage adds to its durability, making it suitable for various weather conditions.

However, the product's strengths may not fully compensate for the potential downside of its weight, as it comes in a 5-litre container weighing over 5 kg, which could be cumbersome for some users to handle. Additionally, while it offers excellent water repellency, its performance in extreme weather conditions or against substantial structural cracks might not be as effective as more specialized sealers.

In conclusion, the Raincheck Water Seal is an excellent choice for those seeking a reliable, eco-friendly stone-sealer that preserves the natural look of surfaces while providing robust waterproofing and breathability. It is most suitable for homeowners and professionals looking for an easy-to-apply and efficient solution for moderate protection against moisture and environmental wear.

The Everbuild 405 High-Performance Path and Patio Seal is a versatile product designed for those who need a reliable solution for protecting and enhancing outdoor surfaces like paths, patios, and natural stone. It stands out as a hard-wearing, solvent-free acrylic sealant, making it a safe choice due to its non-flammable nature and low odor profile. This is particularly useful for users concerned about safety and environmental impact. Additionally, its water-repellent properties help to guard against stains and marks, and the inclusion of a powerful fungicide reduces dirt pickup and prevents organic growth, reducing maintenance needs over time.

In terms of application, the sealer is available in a clear, low sheen finish, which provides a subtle enhancement to surfaces without altering their natural appearance. It is also available in larger sizes, like the 25-litre option, which can be beneficial for extensive coverage projects. However, at 27.2 kilograms, it might be quite heavy to handle for some users, so assistance may be needed during application.

With a customer rating of 4.4 out of 5 stars from over 1700 reviews, it is well-regarded in the DIY community, implying a generally positive user experience. This product is well-suited for those looking to maintain and enhance their outdoor spaces with a durable, environmentally friendly option that provides good coverage and protection.

The Natural Stone Sealer Breathe is a water-based, breathable impregnating sealer designed for porous natural stones like sandstone, slate, and limestone. Its main advantage is that it preserves the stone’s natural look without creating a surface film or altering appearance, making it a great choice for both interior and exterior use, especially on historic floors or surfaces where moisture needs to escape. Application is straightforward—you can use a sprayer, roller, or brush, and the sealer dries quickly to touch in about 30 minutes, becoming fully waterproof after 24 hours. The product lasts 4 to 5 years before needing reapplication, which is decent durability for this type of sealer. It’s also low odor and free from solvents and VOCs, which is better for indoor air quality and user comfort.

The sealer resists both water and oil stains and helps reduce organic growth, adding to its protective qualities. A slight drawback is the need for two applications spaced 40 minutes to an hour apart, plus removing excess after each coat, which might require some patience. Also, while it’s suitable for many stone types and surfaces such as floors, tables, and fireplaces, it’s primarily aimed at porous stones without damp-proof membranes. With its professional-grade quality and ease of use, this sealer suits both DIY enthusiasts and professionals looking to protect natural stone surfaces without changing their look.