Polyurethane Crack Injection kits

When to Use Polyurethane

Use polyurethane injection when the crack is leaking, damp, or actively wet but is not structural. Hydrophobic polyurethane reacts with water and expands to seal the crack completely — including behind structural framing and into voids not visible from the surface. Crack width range: 1/32" to 3/8".

DIY Kits — 10ft to 60ft for Leaking Foundation Walls

• 10ft DIY Starter Kit — One crack up to 3/8" wide. Auto-injector ports, no tools required.
• 20ft to 60ft Kits — Multiple cracks or longer single repairs.
• High-Pressure Kit — Up to 4,500 PSI — For active leaks or previously failed low-pressure repairs.
• Pipe Penetration Kits — For sealing around drains and plumbing penetrations.

When to Choose Polyurethane Over Epoxy

• Crack is leaking or wet — polyurethane reacts with moisture, epoxy will not cure in wet conditions.
• Crack is non-structural — wall is not bowing, no load-bearing concern.
• Crack may move seasonally — cured polyurethane remains flexible through freeze-thaw cycling.
• Need a fast permanent seal — foam expands and cures within hours.

High-Pressure Polyurethane for Actively Leaking Cracks

Standard low-pressure kits handle most basement wall leaks. For actively streaming water or cracks where low-pressure injection has previously failed, the high-pressure polyurethane system drives resin deeper at up to 4,500 PSI using mechanical packers.