When should I use polyurethane instead of epoxy?

Polyurethane is best for leaking or wet non-structural cracks where waterproofing is needed. Epoxy is best for structural cracks that require strength.

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Polyurethane Crack Injection kits

Polyurethane Crack Injection Kits – Stop Leaking Foundation Cracks

For leaking or wet non-structural cracks, polyurethane foam injection expands to fill the entire crack and permanently stop water from the inside.

More Information About Polyurethane Crack Injection

When to Use Polyurethane

Use polyurethane injection when the crack is leaking, damp, or actively wet but is not structural in nature. This foam reacts with water and expands to seal the crack completely.

Choosing the Right Kit

10 ft DIY Starter Kit — Best for one crack up to 1/8" wide.
20–60 ft Kits — Best for multiple cracks or larger repairs.
High-Pressure Kits — For active leaks or hairline cracks.
Pipe Penetration Kits — For sealing around drains & plumbing.

Why Polyurethane Works

Hydrophobic foam expands to fill the crack completely
Flexible sealing prevents crack reopening from freeze-thaw
Seals against continued moisture and mold conditions

Category Items

10ft DIY Universal Polyurethane Foam Crack Injection kit1

DIY Basement Leak Repair Kit. Permanently stop water with our professional 10ft polyurethane foam injection system. Fast, easy, and effective.

NX1110

~~$150.00 USD~~ $122.00 USD

InStock

Polyurethane Crack Injection Kit 10-60ft

10ft Pro Polyurethane Concrete Crack Injection Kit optional Upgrades to 60ft for Leaking foundation basement walls, Professionally repair concrete wall cracks from 1/32 to 3/8 in wide.

NX1112

~~$219.00 USD~~ $169.00 USD

InStock

Pipe Penetration Kit (1-4 Pipes)

Pipe penetration seal kit for 1 to 4 pipes or holes in concrete. Easy-to-use kit with blended polyurethane foam. Repair around pipes entering basement that may leak.

NX1114

$99.00 USD

InStock

High pressure polyurethane concrete crack injection kit

High Pressure DIY Foundation Crack Injection Repair kit

High-Pressure DIY kit for repairing small leaking concrete cracks. Includes 25 injection packers, polyurethane, high-pressure tool, and installation tools.

NX1116

$199.00 USD

InStock