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10 bestWater Sealer For Basementof November 2025

112M consumers helped this year.

1

Liquid Rubber Color Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, White, 1 Gallon

Liquid Rubber Color Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, White, 1 Gallon

Liquid Rubber Color Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, White, 1 Gallon

Liquid Rubber

10.0

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2

Zinsser Watertite 5 Litre

Zinsser Watertite 5 Litre

Zinsser Watertite 5 Litre

Zinsser

10.0

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3

RONSEAL 36286 Thompsons Water Seal 5 Litre (TWSEAL5L), Clear

RONSEAL 36286 Thompsons Water Seal 5 Litre (TWSEAL5L), Clear

RONSEAL 36286 Thompsons Water Seal 5 Litre (TWSEAL5L), Clear

Thompson's Water Seal

9.9

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4

Liquid Waterproof Sealant, Hupeyna Invisible Waterproof Agent, Transparent Repairing Leak Waterproof Adhesive, Indoor and Outdoor Water-Based Waterproof Coating 35 Ounces

Liquid Waterproof Sealant, Hupeyna Invisible Waterproof Agent, Transparent Repairing Leak Waterproof Adhesive, Indoor and Outdoor Water-Based Waterproof Coating 35 Ounces

Liquid Waterproof Sealant, Hupeyna Invisible Waterproof Agent, Transparent Repairing Leak Waterproof Adhesive, Indoor and Outdoor Water-Based Waterproof Coating 35 Ounces

Hupeyna

9.8

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5

Liquid Rubber Concrete Foundation and Basement Sealant - Indoor & Outdoor Waterproof Coating, Easy to Apply, Black, 3.78 Litres

Liquid Rubber Concrete Foundation and Basement Sealant - Indoor & Outdoor Waterproof Coating, Easy to Apply, Black, 3.78 Litres

Liquid Rubber Concrete Foundation and Basement Sealant - Indoor & Outdoor Waterproof Coating, Easy to Apply, Black, 3.78 Litres

Liquid Rubber

9.7

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OtherRelated productsUp to 20% off

Waterproof Sealant Clear 2L(70 oz), Wadities Wall Bathroom Roof Water-Based Waterproof Coating, Invisible Repairing Leak Waterproof Patch & Seal Liquid Rubber Sealant for Indoor and Outdoor

Waterproof Sealant Clear 2L(70 oz), Wadities Wall Bathroom Roof Water-Based Waterproof Coating, Invisible Repairing Leak Waterproof Patch & Seal Liquid Rubber Sealant for Indoor and Outdoor

Lithofin MN Slate Seal 1 Litre

Lithofin MN Slate Seal 1 Litre

Everbuild 402 Water Seal – High Performance – Long Lasting Protection From Water Damage – Solvent-Free Formula – Water Repellant – 5 Litre

Everbuild 402 Water Seal – High Performance – Long Lasting Protection From Water Damage – Solvent-Free Formula – Water Repellant – 5 Litre

Rubber Liquid Waterproof Sealant, TUFINEIN 1KG Neutral Gray Waterproof Patch & Seal Coating, Quick Drying Waterproof Paint Multi-Surface Leak Repair Basements, Campers, Concrete, RV Roof Leak Sealant

Rubber Liquid Waterproof Sealant, TUFINEIN 1KG Neutral Gray Waterproof Patch & Seal Coating, Quick Drying Waterproof Paint Multi-Surface Leak Repair Basements, Campers, Concrete, RV Roof Leak Sealant

6

Nassboards Waterproof Tanking Kit System WSK for Wetrooms, Bathrooms, Kitchens and Waterproofing – Perfect for Wet Zones, Tiling Showers, Preventing Moisture (Sealing Kit)

Nassboards Waterproof Tanking Kit System WSK for Wetrooms, Bathrooms, Kitchens and Waterproofing – Perfect for Wet Zones, Tiling Showers, Preventing Moisture (Sealing Kit)

Nassboards Waterproof Tanking Kit System WSK for Wetrooms, Bathrooms, Kitchens and Waterproofing – Perfect for Wet Zones, Tiling Showers, Preventing Moisture (Sealing Kit)

Nassboards

9.5

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7

TWSU5L 5L Thompson's One Coat Water-Seal

TWSU5L 5L Thompson's One Coat Water-Seal

TWSU5L 5L Thompson's One Coat Water-Seal

Ronseal

9.3

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8

Liquid Rubber Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Quart

Liquid Rubber Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Quart

Liquid Rubber Waterproof Sealant - Multi-Surface Leak Repair Indoor and Outdoor Coating, Water-Based, Easy to Apply, Original Black, 1 Quart

Liquid Rubber

9.1

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9

Tapel Water-Based Liquid Rubber Waterproof Sealant - White 710ML for 1.5m² (Single Coat) - Waterproof Rubber Paint Indoor & Outdoor Coating Sealant for Leaks, Cracks & Roof Repair - Easy to Apply 800G

Tapel Water-Based Liquid Rubber Waterproof Sealant - White 710ML for 1.5m² (Single Coat) - Waterproof Rubber Paint Indoor & Outdoor Coating Sealant for Leaks, Cracks & Roof Repair - Easy to Apply 800G

Tapel Water-Based Liquid Rubber Waterproof Sealant - White 710ML for 1.5m² (Single Coat) - Waterproof Rubber Paint Indoor & Outdoor Coating Sealant for Leaks, Cracks & Roof Repair - Easy to Apply 800G

Tapel

8.9

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10

Rempro 5kg White Damp Proof Paint - Internal & External Liquid DPM for Water & Vapour Membrane Proofing Applications

Rempro 5kg White Damp Proof Paint - Internal & External Liquid DPM for Water & Vapour Membrane Proofing Applications

Rempro 5kg White Damp Proof Paint - Internal & External Liquid DPM for Water & Vapour Membrane Proofing Applications

Rempro

8.7

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