DIY Structural Basement Wall Crack Repair Kit (10 ft.) for Homeowners - Repair Poured Concrete Foundation Wall Cracks, the Waterproofing Contractor&rsquo;s Preferred Solution Permanent solution. User friendly foundation crack for DIY Homeowners. Fills structural basement wall cracks. Effectively waterproofs and returns structural integrity. Low viscosity epoxy for hairline cracks (as thin as 1/32 of an inch) up to 3/16 of an inch wide. Inject from inside foundation wall via standard caulk gun. Requires no drilling into concrete. We are a pioneer of low pressure concrete crack repair dating back to 1987.