Best Liquid Membrane Waterproofing of 2026

Last updated on 01/04/2026
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1
Siramico Coatings Liquid Rubber Roof Coating | 5 Litres | Instant Leak Seal Technology I Quick Drying, One Coat Waterproofing Sealant | Black, Grey & Clear (Grey, 5 Liters)

Siramico Coatings Liquid Rubber Roof Coating | 5 Litres | Instant Leak Seal Technology I Quick Drying, One Coat Waterproofing Sealant | Black, Grey & Clear (Grey, 5 Liters)

SIRAMICO COATINGS
19% OffWith Prime
Why we love it
  • Versatile for various surfaces.
  • Easy one-coat application.
  • Long-lasting waterproof protection.
Main Highlights
  • ✅Designed for both flat and pitched roofs, this high-performance coating adheres to a wide range of surfaces, including asphalt, brick, concrete, GRP, metal, felt, OSB, and more.
  • ✅No primer needed, no second coat required—just a single, easy application with a brush or roller. Siramico Coatings Liquid Rubber Coating is perfect for hassle-free DIY use, delivering a professional finish with minimal effort.
  • ✅Forming a seamless, elastic membrane, this liquid rubber coating expands and contracts with your surface, providing strong adhesion and waterproofing that lasts up to 10 years.
  • ✅Quick drying and ease to use straight out of the can liquid rubber solution for all your waterproofing requirements.
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9.8
Exceptional
With Prime
9.8
Exceptional
SIRAMICO COATINGS

Siramico Coatings Liquid Rubber Roof Coating | 5 Litres | Instant Leak Seal Technology I Quick Drying, One Coat Waterproofing Sealant | Black, Grey & Clear (Grey, 5 Liters)

19% OffWith Prime
Why we love it
  • Versatile for various surfaces.
  • Easy one-coat application.
  • Long-lasting waterproof protection.
Main Highlights
  • ✅Designed for both flat and pitched roofs, this high-performance coating adheres to a wide range of surfaces, including asphalt, brick, concrete, GRP, metal, felt, OSB, and more.
  • ✅No primer needed, no second coat required—just a single, easy application with a brush or roller. Siramico Coatings Liquid Rubber Coating is perfect for hassle-free DIY use, delivering a professional finish with minimal effort.
  • ✅Forming a seamless, elastic membrane, this liquid rubber coating expands and contracts with your surface, providing strong adhesion and waterproofing that lasts up to 10 years.
  • ✅Quick drying and ease to use straight out of the can liquid rubber solution for all your waterproofing requirements.
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Value for Money
2
Siramico Coatings Liquid Rubber Roof Coating | 5 Litres | Instant Leak Seal Technology I Quick Drying, One Coat Waterproofing Sealant | Black, Grey & Clear (Black, 5 Liters)

Siramico Coatings Liquid Rubber Roof Coating | 5 Litres | Instant Leak Seal Technology I Quick Drying, One Coat Waterproofing Sealant | Black, Grey & Clear (Black, 5 Liters)

SIRAMICO COATINGS
19% OffWith Prime
Why we love it
  • Versatile for various surfaces.
  • No primer or second coat.
  • Long-lasting waterproof protection.
Main Highlights
  • ✅Designed for both flat and pitched roofs, this high-performance coating adheres to a wide range of surfaces, including asphalt, brick, concrete, GRP, metal, felt, OSB, and more.
  • ✅No primer needed, no second coat required—just a single, easy application with a brush or roller. Siramico Coatings Liquid Rubber Coating is perfect for hassle-free DIY use, delivering a professional finish with minimal effort.
  • ✅Forming a seamless, elastic membrane, this liquid rubber coating expands and contracts with your surface, providing strong adhesion and waterproofing that lasts up to 10 years.
  • ✅Quick drying and ease to use straight out of the can liquid rubber solution for all your waterproofing requirements.
Show More
9.7
Exceptional
With Prime
9.7
Exceptional
SIRAMICO COATINGS

Siramico Coatings Liquid Rubber Roof Coating | 5 Litres | Instant Leak Seal Technology I Quick Drying, One Coat Waterproofing Sealant | Black, Grey & Clear (Black, 5 Liters)

19% OffWith Prime
Why we love it
  • Versatile for various surfaces.
  • No primer or second coat.
  • Long-lasting waterproof protection.
Main Highlights
  • ✅Designed for both flat and pitched roofs, this high-performance coating adheres to a wide range of surfaces, including asphalt, brick, concrete, GRP, metal, felt, OSB, and more.
  • ✅No primer needed, no second coat required—just a single, easy application with a brush or roller. Siramico Coatings Liquid Rubber Coating is perfect for hassle-free DIY use, delivering a professional finish with minimal effort.
  • ✅Forming a seamless, elastic membrane, this liquid rubber coating expands and contracts with your surface, providing strong adhesion and waterproofing that lasts up to 10 years.
  • ✅Quick drying and ease to use straight out of the can liquid rubber solution for all your waterproofing requirements.
Show More
3
Drybase Liquid Damp Proof Membrane (5 Litre, Black) - Damp Proofing Paint for Internal Walls and Floors. Waterproof Paint

Drybase Liquid Damp Proof Membrane (5 Litre, Black) - Damp Proofing Paint for Internal Walls and Floors. Waterproof Paint

Drybase
Why we love it
  • Highly effective against moisture ingress.
  • Low odour and bitumen-free.
  • Quick drying, strong bond.
Main Highlights
  • High-Strength damp-proof barrier highly effective against moisture ingress and ground gases in floors and walls.
  • Low Odour thanks to its water-based and Bitumen-Free formulation, presenting excellent adhesion and drip-resistant properties.
  • Versatile damp proof membrane - Can be used on a large range of substrates such as brick and timber.
  • Quick-Drying & Strong Bond - two-coat application with a fast 1-hour initial drying time: can be used immediately with no special curing required.
  • Extensively tested for high performance and produced in accordance with quality and environmental management systems - 1L Coverage: Approx. 1m²
Show More
9.5
Superb
9.5
Superb
Drybase

Drybase Liquid Damp Proof Membrane (5 Litre, Black) - Damp Proofing Paint for Internal Walls and Floors. Waterproof Paint

Why we love it
  • Highly effective against moisture ingress.
  • Low odour and bitumen-free.
  • Quick drying, strong bond.
Main Highlights
  • High-Strength damp-proof barrier highly effective against moisture ingress and ground gases in floors and walls.
  • Low Odour thanks to its water-based and Bitumen-Free formulation, presenting excellent adhesion and drip-resistant properties.
  • Versatile damp proof membrane - Can be used on a large range of substrates such as brick and timber.
  • Quick-Drying & Strong Bond - two-coat application with a fast 1-hour initial drying time: can be used immediately with no special curing required.
  • Extensively tested for high performance and produced in accordance with quality and environmental management systems - 1L Coverage: Approx. 1m²
Show More
4
Drybase Liquid Damp Proof Membrane (5 Litre, White) - Damp Proofing Paint for Internal Walls and Floors. Waterproof Paint

Drybase Liquid Damp Proof Membrane (5 Litre, White) - Damp Proofing Paint for Internal Walls and Floors. Waterproof Paint

Drybase
Why we love it
  • Highly effective against moisture.
  • Low odour, bitumen-free formulation.
  • Quick-drying, strong bond.
Main Highlights
  • High-Strength damp-proof barrier highly effective against moisture ingress and ground gases in floors and walls.
  • Low Odour thanks to its water-based and Bitumen-Free formulation, presenting excellent adhesion and drip-resistant properties.
  • Versatile damp proof membrane - Can be used on a large range of substrates such as brick and timber.
  • Quick-Drying & Strong Bond - two-coat application with a fast 1-hour initial drying time: can be used immediately with no special curing required.
  • Extensively tested for high performance and produced in accordance with quality and environmental management systems - 1L Coverage: Approx. 1m²
Show More
9.4
Superb
9.4
Superb
Drybase

Drybase Liquid Damp Proof Membrane (5 Litre, White) - Damp Proofing Paint for Internal Walls and Floors. Waterproof Paint

Why we love it
  • Highly effective against moisture.
  • Low odour, bitumen-free formulation.
  • Quick-drying, strong bond.
Main Highlights
  • High-Strength damp-proof barrier highly effective against moisture ingress and ground gases in floors and walls.
  • Low Odour thanks to its water-based and Bitumen-Free formulation, presenting excellent adhesion and drip-resistant properties.
  • Versatile damp proof membrane - Can be used on a large range of substrates such as brick and timber.
  • Quick-Drying & Strong Bond - two-coat application with a fast 1-hour initial drying time: can be used immediately with no special curing required.
  • Extensively tested for high performance and produced in accordance with quality and environmental management systems - 1L Coverage: Approx. 1m²
Show More
5
3C Sealants Liquid Jacket Liquid Rubber Membrane – 6kg Grey | Ready-to-Use Waterproofing Sealer | Highly Elastic Polymer for Roofs, Walls, Basements, Bathrooms, Floors & More

3C Sealants Liquid Jacket Liquid Rubber Membrane – 6kg Grey | Ready-to-Use Waterproofing Sealer | Highly Elastic Polymer for Roofs, Walls, Basements, Bathrooms, Floors & More

Liquid Jacket
Why we love it
  • Immediately waterproof on application.
  • Applicable on damp surfaces.
  • Versatile application methods available.
Main Highlights
  • Can be used on damp surfaces
  • Can be used internally or externally
  • Use in vertical and horizontal applications
  • Immediately waterproof
  • Anti-slip membrane
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9.4
Superb
9.4
Superb
Liquid Jacket

3C Sealants Liquid Jacket Liquid Rubber Membrane – 6kg Grey | Ready-to-Use Waterproofing Sealer | Highly Elastic Polymer for Roofs, Walls, Basements, Bathrooms, Floors & More

Why we love it
  • Immediately waterproof on application.
  • Applicable on damp surfaces.
  • Versatile application methods available.
Main Highlights
  • Can be used on damp surfaces
  • Can be used internally or externally
  • Use in vertical and horizontal applications
  • Immediately waterproof
  • Anti-slip membrane
Show More
6
OB1 Grey Waterproof Tanking Solution 7kg - For Bathrooms, Wet Rooms, Swimming Pools and Utility Areas - Interior & Exterior - Prevents Mould - Quick Drying

OB1 Grey Waterproof Tanking Solution 7kg - For Bathrooms, Wet Rooms, Swimming Pools and Utility Areas - Interior & Exterior - Prevents Mould - Quick Drying

OB1
Why we love it
  • Ultimate waterproof membrane protection.
  • Flexible and crack-resistant solution.
  • Quick application and drying time.
Main Highlights
  • POWERFUL WATERPROOFING FOR WET AREAS Creates a strong, watertight barrier that stops moisture from penetrating walls and floors. Perfect for wet rooms, showers, bathrooms, kitchens and utility spaces.
  • FLEXIBLE & CRACK‑RESISTANT PROTECTION Designed to handle movement and vibration in your home. Seals cracks and joints up to 3mm, and offers extra strength for wider gaps when paired with joint tape.
  • QUICK & EASY TO APPLY Seal all gaps and joints with OB1 Plumbers Pal first and allow it to fully cure. Then apply with a brush or roller. Each coat dries in just 1–2 hours, and you can start tiling as soon as 2 hours later — ideal for fast project turnaround.
  • HIGH COVERAGE, COST‑EFFICIENT FORMULA One 7kg tub covers up to 7m² with two coats, delivering thorough waterproof protection with a durable dry film thickness of around 0.8mm.
  • WORKS ON MULTIPLE SURFACES Adheres strongly to plaster, render, tile backer boards, plywood, concrete and more. Suitable for bathrooms, steam rooms, pools, balconies and other moisture‑prone areas.
  • Contents: 1 x OB1 Grey Waterproof Tanking solution 7kg
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9.3
Superb
9.3
Superb
OB1

OB1 Grey Waterproof Tanking Solution 7kg - For Bathrooms, Wet Rooms, Swimming Pools and Utility Areas - Interior & Exterior - Prevents Mould - Quick Drying

Why we love it
  • Ultimate waterproof membrane protection.
  • Flexible and crack-resistant solution.
  • Quick application and drying time.
Main Highlights
  • POWERFUL WATERPROOFING FOR WET AREAS Creates a strong, watertight barrier that stops moisture from penetrating walls and floors. Perfect for wet rooms, showers, bathrooms, kitchens and utility spaces.
  • FLEXIBLE & CRACK‑RESISTANT PROTECTION Designed to handle movement and vibration in your home. Seals cracks and joints up to 3mm, and offers extra strength for wider gaps when paired with joint tape.
  • QUICK & EASY TO APPLY Seal all gaps and joints with OB1 Plumbers Pal first and allow it to fully cure. Then apply with a brush or roller. Each coat dries in just 1–2 hours, and you can start tiling as soon as 2 hours later — ideal for fast project turnaround.
  • HIGH COVERAGE, COST‑EFFICIENT FORMULA One 7kg tub covers up to 7m² with two coats, delivering thorough waterproof protection with a durable dry film thickness of around 0.8mm.
  • WORKS ON MULTIPLE SURFACES Adheres strongly to plaster, render, tile backer boards, plywood, concrete and more. Suitable for bathrooms, steam rooms, pools, balconies and other moisture‑prone areas.
  • Contents: 1 x OB1 Grey Waterproof Tanking solution 7kg
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7
Everbuild Aquaseal Waterproof Tanking Membrane – Flexible – Waterproof – Easy To Apply – Internal And External – Blue – 5 Litre

Everbuild Aquaseal Waterproof Tanking Membrane – Flexible – Waterproof – Easy To Apply – Internal And External – Blue – 5 Litre

Everbuild
27% Off
Why we love it
  • Versatile for interior and exterior.
  • Formula ensures quality sealing.
  • Ready, easy to use.
Main Highlights
  • WATERPROOF – Provides a permanent, flexible, and watertight seal prior to tiling on surfaces such as plasterboard, concrete, plywood, and more.
  • FORMULATED WITH INDUSTRY BEST PRACTICES IN MIND – Following tried-and-tested principles from Scandinavia and Germany, this product provides quality and peace of mind.
  • READY TO USE – Creates a watertight barrier on walls and floors covering up to 7.5m² depending on the substrate.
  • SURFACES - Can be applied to plasterboard, MDF, plywood, cementitious board, brickwork, concrete and specialist wet room boards.
  • SUITABLE FOR INTERIOR AND EXTERIOR USE – Ideal for showers, wet rooms and bathrooms, as well as balconies and partially covered exterior areas.
Show More
9.2
Superb
9.2
Superb
Everbuild

Everbuild Aquaseal Waterproof Tanking Membrane – Flexible – Waterproof – Easy To Apply – Internal And External – Blue – 5 Litre

27% Off
Why we love it
  • Versatile for interior and exterior.
  • Formula ensures quality sealing.
  • Ready, easy to use.
Main Highlights
  • WATERPROOF – Provides a permanent, flexible, and watertight seal prior to tiling on surfaces such as plasterboard, concrete, plywood, and more.
  • FORMULATED WITH INDUSTRY BEST PRACTICES IN MIND – Following tried-and-tested principles from Scandinavia and Germany, this product provides quality and peace of mind.
  • READY TO USE – Creates a watertight barrier on walls and floors covering up to 7.5m² depending on the substrate.
  • SURFACES - Can be applied to plasterboard, MDF, plywood, cementitious board, brickwork, concrete and specialist wet room boards.
  • SUITABLE FOR INTERIOR AND EXTERIOR USE – Ideal for showers, wet rooms and bathrooms, as well as balconies and partially covered exterior areas.
Show More
8
Nassboards Waterproof 5KG Tanking Membrane for Wetrooms, Bathrooms, Kitchens and Waterproofing – Perfect for Wet Zones, Tiling Showers, Preventing Moisture – 5 Kg Waterproof Tanking Membrane

Nassboards Waterproof 5KG Tanking Membrane for Wetrooms, Bathrooms, Kitchens and Waterproofing – Perfect for Wet Zones, Tiling Showers, Preventing Moisture – 5 Kg Waterproof Tanking Membrane

Nassboards
Why we love it
  • Premium waterproofing for wetrooms.
  • Works on many surfaces.
  • Quick drying within 24 hours.
Main Highlights
  • PREMIUM WETROOM WATERPROOFING: Introducing the WSK Wet Room Waterproof Tanking Membrane, brought to you by Nassboards, the experts in Kitchen, Bathroom & Wetroom Waterproofing. This Waterproof Tanking Membrane provides you with the tool you need to waterproof both walls and floors prior to tiling showers, wet rooms, wet zones and other areas susceptible to water and excessive moisture. It forms a permanently flexible, watertight membrane that goes behind the tile so that water doesn’t
  • APPLICABLE ON SO MANY SURFACES: This non-hazardous, solvent free membrane is great to use on the majority of common surfaces, such as Plasterboard, MDF, Plywood, Cement Boards, Blockwork, Concrete and Specialist Wet Room Boards. The membrane works effortlessly with most materials, and gives you peace of mind regardless of the composition of your bathroom or wetroom’s substrate
  • JUST THE TUB: If you don’t need the kit, then just take the tub! Our Nassboards Tanking Membrane Container holds 5KG, which is the same tub you’d receive if you were to purchase the Large size kit, which provides you with enough coatings you’ll need to waterproof an area measuring 8m². We’ve got everything you need to renovate your bathroom, kitchen or wetroom in a safe and stress-free way
  • QUICK DRYING: When you purchase from Nassboards, you will receive a high quality Membrane that is easily applicable by brush. The material is non-hazardous and is solvent free, and dries quickly within 24 hours, so you can start tiling as soon as possible. This premium, professional membrane is a must have tool if you want to do it right
  • NASSBOARDS CARE: We at Nassboards are as passionate as we are confident about the quality of our Wetroom Waterproofing Kit. We take a lot of care to ensure that we leave you a satisfied customer every step of the way. If at any point you are not happy with our product, contact us so that we can make it right
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9.0
Superb
9.0
Superb
Nassboards

Nassboards Waterproof 5KG Tanking Membrane for Wetrooms, Bathrooms, Kitchens and Waterproofing – Perfect for Wet Zones, Tiling Showers, Preventing Moisture – 5 Kg Waterproof Tanking Membrane

Why we love it
  • Premium waterproofing for wetrooms.
  • Works on many surfaces.
  • Quick drying within 24 hours.
Main Highlights
  • PREMIUM WETROOM WATERPROOFING: Introducing the WSK Wet Room Waterproof Tanking Membrane, brought to you by Nassboards, the experts in Kitchen, Bathroom & Wetroom Waterproofing. This Waterproof Tanking Membrane provides you with the tool you need to waterproof both walls and floors prior to tiling showers, wet rooms, wet zones and other areas susceptible to water and excessive moisture. It forms a permanently flexible, watertight membrane that goes behind the tile so that water doesn’t
  • APPLICABLE ON SO MANY SURFACES: This non-hazardous, solvent free membrane is great to use on the majority of common surfaces, such as Plasterboard, MDF, Plywood, Cement Boards, Blockwork, Concrete and Specialist Wet Room Boards. The membrane works effortlessly with most materials, and gives you peace of mind regardless of the composition of your bathroom or wetroom’s substrate
  • JUST THE TUB: If you don’t need the kit, then just take the tub! Our Nassboards Tanking Membrane Container holds 5KG, which is the same tub you’d receive if you were to purchase the Large size kit, which provides you with enough coatings you’ll need to waterproof an area measuring 8m². We’ve got everything you need to renovate your bathroom, kitchen or wetroom in a safe and stress-free way
  • QUICK DRYING: When you purchase from Nassboards, you will receive a high quality Membrane that is easily applicable by brush. The material is non-hazardous and is solvent free, and dries quickly within 24 hours, so you can start tiling as soon as possible. This premium, professional membrane is a must have tool if you want to do it right
  • NASSBOARDS CARE: We at Nassboards are as passionate as we are confident about the quality of our Wetroom Waterproofing Kit. We take a lot of care to ensure that we leave you a satisfied customer every step of the way. If at any point you are not happy with our product, contact us so that we can make it right
Show More
9
TRANS - PAL Liquid Foil Waterproof Membrane, 4.5L, Blue, Water-Based Tanking Solution for Wet Rooms and Bathrooms

TRANS - PAL Liquid Foil Waterproof Membrane, 4.5L, Blue, Water-Based Tanking Solution for Wet Rooms and Bathrooms

TRANS - PAL
19% Off
Why we love it
  • Ultimate Waterproofing for lasting protection.
  • Highly Flexible and crack-resistant.
  • Effortless application for everyone.
Main Highlights
  • Ultimate Waterproofing: Perfect solution for bathrooms, kitchens, and wet areas, ensuring a reliable waterproof layer under ceramic tiles.
  • Ideal for bathrooms, wet rooms, and shower areas - can be applied directly to various surfaces
  • Coverages: 4.5kg container provides sufficient coverage for approximately 4-5 square metres when applied in two coats
  • Highly Flexible & Crack-Resistant: Handles cracks up to 2.0 mm for long-term durability.
  • Superior Adhesion: Adheres strongly to concrete (2.2 MPa), plasterboard, OSB boards, metal, PVC, and more.
  • Effortless Application: Easy to apply using a brush, roller, or trowel for precise control and coverage.
  • Variable Color for Easy Application – The membrane may appear dirty pink or blue depending on the batch. This helps you visually check coverage, layer thickness, and drying progress for accurate waterproofing.
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8.9
Excellent
8.9
Excellent
TRANS - PAL

TRANS - PAL Liquid Foil Waterproof Membrane, 4.5L, Blue, Water-Based Tanking Solution for Wet Rooms and Bathrooms

19% Off
Why we love it
  • Ultimate Waterproofing for lasting protection.
  • Highly Flexible and crack-resistant.
  • Effortless application for everyone.
Main Highlights
  • Ultimate Waterproofing: Perfect solution for bathrooms, kitchens, and wet areas, ensuring a reliable waterproof layer under ceramic tiles.
  • Ideal for bathrooms, wet rooms, and shower areas - can be applied directly to various surfaces
  • Coverages: 4.5kg container provides sufficient coverage for approximately 4-5 square metres when applied in two coats
  • Highly Flexible & Crack-Resistant: Handles cracks up to 2.0 mm for long-term durability.
  • Superior Adhesion: Adheres strongly to concrete (2.2 MPa), plasterboard, OSB boards, metal, PVC, and more.
  • Effortless Application: Easy to apply using a brush, roller, or trowel for precise control and coverage.
  • Variable Color for Easy Application – The membrane may appear dirty pink or blue depending on the batch. This helps you visually check coverage, layer thickness, and drying progress for accurate waterproofing.
Show More
10
Mapei MAPEGUM WPS Fast Drying Tanking Membrane 5 Kg -Mapei 124805

Mapei MAPEGUM WPS Fast Drying Tanking Membrane 5 Kg -Mapei 124805

Mapei
Why we love it
  • High coverage per weight.
  • Easy-to-apply waterproofing solution.
  • Reliable for construction needs.
Main Highlights
  • Size: 5Kg
  • Mapei 124805 Mapei MAPEGUM WPS
  • COVERAGE: approx. 1.5 kg/m2 per mm of thickness.
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8.8
Excellent
8.8
Excellent
Mapei

Mapei MAPEGUM WPS Fast Drying Tanking Membrane 5 Kg -Mapei 124805

Why we love it
  • High coverage per weight.
  • Easy-to-apply waterproofing solution.
  • Reliable for construction needs.
Main Highlights
  • Size: 5Kg
  • Mapei 124805 Mapei MAPEGUM WPS
  • COVERAGE: approx. 1.5 kg/m2 per mm of thickness.
Show More