Zinsser WaterTite Interior and Exterior Waterproofing Paint

Manufactured by Zinsser

Why Choose Our Products?

Effective on wet or dry masonry surfaces

Provides long-lasting protection against water penetration

Smooth easy-to-apply and low-odour formula

Prevents recurring efflorescence and maintains a bright white finish

Trusted for both interior and exterior waterproofing applications

Zinsser WaterTite 5L is a professional-grade, solvent-based waterproofing paint formulated for interior and exterior masonry surfaces. Designed to stop water ingress up to 34 psi, this advanced coating creates a durable, smooth, non-gritty finish that protects concrete, brickwork, and cementitious surfaces from damp, leaks, and recurring efflorescence. Its unique combination of waterproofing resin and Portland cement ensures a long-lasting barrier that adheres to dry, moist, or wet substrates, allowing immediate repair of water-affected areas without waiting for the surface to dry.

Unlike traditional waterproofers, WaterTite can be recoated in just four hours, offering a fast turnaround for domestic and commercial projects. The ultra-low odour formula is safe for use indoors and outdoors, providing a bright white, non-yellowing finish that resists dirt, dust, and staining. This product is ideal for basements, retaining walls, driveways, patios, and other masonry surfaces that require reliable, high-performance waterproofing.

Key Features & Benefits

Guaranteed Waterproofing: Stops water ingress up to 34 psi on masonry surfaces.
Smooth Finish: Non-gritty, bright white finish enhances appearance and eases cleaning.
Fast Application: Can be applied to wet, damp, or dry surfaces for immediate protection.
Quick Recoat: Recoatable in 4 hours, reducing project downtime.
Durable Protection: Prevents recurring efflorescence, staining, and water damage.
Low Odour: Ultra-low odour formula suitable for interior and exterior use.
Versatile Use: Ideal for concrete, brickwork, cementitious surfaces, and basements.
Professional Grade: Made in the UK with consistent quality and performance.

Suitable Surfaces

Concrete and cementitious floors, walls, and slabs
Brickwork and blockwork
Interior basements and exterior masonry
Above and below grade applications
Surfaces prone to damp, efflorescence, or water ingress

Coverage & Performance

Coverage: Approximately 2 m² per litre (surface and porosity dependent)
Touch Dry: 1 hour
Recoat: 4 hours
Full Cure: 7–14 days

Sizes Available

5 Litre pack

Surface Preparation

Ensure all surfaces are clean, free from loose material, dust, grease, or efflorescence.
Repair cracks, chips, or damaged areas before application.
Remove mould or algae with an appropriate biocide if present.
Lightly abrade or strip loose coatings from previously painted surfaces to create a sound substrate.

Mixing

Stir the product thoroughly with a paddle or paint stick to ensure uniform consistency before and during application.
Do not thin the product unless specified for specialized spray equipment

Application: First Coat

Apply evenly using a brush or roller suitable for masonry surfaces
For large areas, use a medium-nap roller for uniform coverage
Ensure coverage is consistent and avoid pooling in low spots or joints

Application: Second Coat

Allow the first coat to touch dry (approx. 4 hours) before recoating
Apply the second coat at right angles to the first to ensure full surface penetration and waterproofing
Two coats are recommended for maximum protection and durability

Curing & Reopening

Light foot traffic is permitted after 8 hours of drying at 18 °C.
Heavy traffic or use should be avoided for at least 48 hours for proper curing.
Full waterproof performance and chemical resistance develop after 7–14 days.

Clean-Up

Clean brushes, rollers, and equipment immediately after use with water
Dispose of unused material and rinse water in accordance with local environmental regulations

Pro Tips

Apply on a dry day above 5 °C for optimal results
Avoid applying in direct sunlight or high humidity to reduce drying issues and streaking.
For vertical surfaces, start at the top and work downward to prevent runs
Ensure consistent coverage to avoid patchiness and weak spots in waterproofing

COVERAGE CALCULATOR

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Frequently Asked Questions

What surfaces can I apply WaterTite to?

WaterTite can be applied to interior and exterior masonry surfaces, including concrete, brickwork, cement, and blockwork. It works on both dry and damp walls above or below grade.

Can WaterTite be used on wet surfaces?

Yes, it can be applied to dry, damp, or slightly wet masonry, making it ideal for areas with existing water ingress problems.

How many coats are needed for complete protection?

Two coats are recommended for optimal waterproofing and a smooth, durable finish.

How quickly does WaterTite dry?

It is touch-dry in about 1 hour at 18 °C and can be recoated after 4 hours.

When can I expose the surface to water?

Avoid rainfall or water exposure for at least 24 hours after the final coat. Full waterproofing develops after 7–14 days.

Is WaterTite suitable for basements?

Yes, it is designed for basements and below-grade areas, resisting water pressure up to 34 psi.

Can it prevent efflorescence on brick and concrete?

Yes, it helps reduce recurring efflorescence by creating a breathable, water-resistant barrier.

What is the coverage per litre?

Coverage is about 2 m² per litre per coat, depending on surface porosity and texture.

Is WaterTite safe for indoor use?

Yes, it has an ultra-low odour formula suitable for interiors. Ensure proper ventilation during application.

Can I apply it with a brush or roller?

Yes, use a brush for corners and detail work, or a medium-nap roller for larger surfaces.

How do I clean up after applying WaterTite?

Clean tools with warm soapy water immediately after use. Dispose of leftover material responsibly.

Does it work on previously painted masonry?

Yes, provided the surface is sound. Remove loose or flaking paint before application for proper adhesion.

Is WaterTite suitable for high-pressure water areas?

It withstands moderate water pressure up to 34 psi. For extreme conditions, seek technical advice.

Can I apply it in cold or damp weather?

Yes, it can be applied in damp conditions, but drying and recoat times will be longer. Avoid freezing or heavy rain during application.

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£84.99 (inc VAT)

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Delivery within 24 to 48 hours

Size

5LTR

Product variants

*subject to stock levels at the time of your order.