Thompsons Water Seal 5L

Thompsons Water Seal 5L — Available at Masseys, Swadlincote

Thompsons Water Seal 5L is a high-performance water-repellent treatment designed to protect exterior surfaces from moisture ingress while retaining substrate breathability. Ideal for outdoor structures, masonry and porous building materials, this professional-grade sealant provides long-lasting protection against rain, frost and damp conditions. Available now at Masseys in Swadlincote.

Key Features

Effective Water Repellency
Penetrates deep into porous surfaces to create a clear, invisible barrier that prevents water absorption and minimises the risk of damp-related damage.

5 Litre Pack Size
Generous volume suitable for medium to large projects, delivering excellent coverage and value for money.

Suitable for Multiple Surfaces
Thompsons Water Seal 5L is optimised for use on a broad range of exterior substrates, including:

• Brickwork and blockwork

• Concrete and paving

• Natural stone and render

• Roof tiles and chimney stacks

Maintains Breathability
Unlike surface films or coatings, Thompsons Water Seal allows trapped moisture to escape, reducing the risk of spalling, efflorescence and frost damage.

UV and Weather Resistant
Thompsons Water Seal 5L is formulated to withstand harsh outdoor conditions without yellowing, flaking or peeling.

Benefits

• Protects Structural Integrity: Reduces water penetration to prolong the life of building materials.

• Reduces Maintenance Costs: Helps prevent costly repairs related to moisture ingress.

• Invisible Finish: Clear formulation retains the natural look of treated surfaces.

• Easy to Apply: Can be applied by brush, roller or low-pressure spray.

Thompsons Water Seal 5L Technical Specifications

• Volume: 5 Litres

• Finish: Clear, invisible protection

• Coverage: Approx. 5–10 m² per litre depending on surface porosity

• Drying Time: Surface dry in 1–2 hours (conditions dependent)

Typical Applications

• House walls and façades

• Driveways, patios and pathways

• Garden walls and boundary features

• Roof tiles and vertical stonework

Application Instructions

1. Prepare Surface: Ensure the surface is clean, dry and free from loose material, dirt, algae or mould.

2. Test Patch: Apply a small test area to assess coverage and absorption.

3. Apply Water Seal: Use a paint brush, roller or low-pressure sprayer, working in a uniform direction.

4. Second Coat (If Required): For highly porous materials, a second coat may improve performance.

5. Allow to Dry: Let the surface dry thoroughly before exposure to moisture.

Safety and Storage

• Use in well-ventilated conditions.

• Wear appropriate personal protective equipment (PPE), including gloves and eye protection.

• Store in a cool, dry location away from direct sunlight and heat sources.

• Keep out of reach of children.

Why Buy from Masseys, Swadlincote

At Masseys, we combine competitive pricing with expert product knowledge. Our team can help you determine the quantities and application techniques required to achieve optimal results with Thompsons Water Seal 5L. We also stock complementary tools and surface preparation products to support every stage of your project.