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Penetrating concrete sealers | Do-it-yourself basement waterproofing | Basement and concrete repairs
If you have cracks in your concrete foundation wall, you're not alone. Most houses, both new and old, develop some foundation cracks. If the cracks aren't leaking, it is only a matter of time as the exterior waterproofing gradually deteriorates. If your basement cracks are already leaking, now is the time to repair them to avoid further water damage and possible mold growth.
Many homeowners have learned the hard way – when it comes to crack repair, caulk or hydraulic cement do not last. Caulk will eventually lose adhesion and peel. Hydraulic cement does not adhere well to concrete and because it is very rigid, the natural movement of concrete will cause it to separate and leak. Both methods are temporary “Band-Aids” only.
Don't waste time or money. Our low-pressure foundatior crack injection kits make crack repair easy and inexpensive! Already used by thousands of homeowners and contractors! Read What Our Customers Have To Say
Our crack injection method fills the entire length and depth of the crack and stops and prevents water leaks permanently. No special training or tools are required. Suitable for even hairline cracks! You just need a caulking gun and a crack in poured concrete wall.
Seal Your Basement Concrete Against Negative Side Water Pressure
The simple answer - YES!
Our D-I-Y Foundation Crack Repair Kits use the same two-component polyurethane or epoxy for injection as our professional toolkits for contractors. Two-component injection polymers are used by practically all contractors because they provide a superior crack repair that will last forever.
Once injected, our proprietary, two-component polyurethane expands forcefully to fill the entire crack with hydrophobic foam that repels water and WILL NOT BREAK DOWN, as proven over many years. Your foundation crack will never leak again because water cannot get into it. Cheaper kits use single-component, hydrophilic foams that absorb water but eventually crumble after repeated drying.
Our do-it-yourself crack injection kits feature internally split dual-component cartridges. Each crack injection kit comes complete and ready to use, allowing you to fix cracks like a pro but without the cost.
Learn More About Types Of Cracks In Foundation Walls
You have a wide choice of Do-It-Yourself Crack Injection Kits. Each D-I-Y kit is able to repair up to 10 linear feet of cracks in poured concrete walls from hairline to 1/2" wide.
You can choose to inject either expanding polyurethane or epoxy. Since most cracks are non-structural, we use polyurethane on almost all cracks because it works inside wet cracks. You also have the choice of the standard epoxy surface sealer when the wall will be framed in or if appearance matters, the Easy-Peel surface sealer which can be easily removed after the repair.
If you have more than 20 linear feet of cracks, it is more economical to purchase our Professional Foundation Crack Repair Toolkit. These kits include a professional caulking gun, which makes the job even easier.
If it is a smaller project, like filling the voids around pipes or leaking form ties, use our PipeTite Gap Filler Kit (see product description below.) Crack injection is not suitable for masonry blocks because the injection polymer would run out into the cavities – use our ElastiPoxy Crack Filler mixed with sand (5:1 sand to ElastiPoxy ratio.)
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| D-I-Y Injection Kit (polyurethane or epoxy) | Easy-Peel D-I-Y Kit (polyurethane or epoxy) | PipeTite Gap Filler Kit (polyurethane) |
Not sold in stores. Shipped directly from the factory to your door. Orders received by 1 pm ET are normally shipped the same day and UPS Ground delivers within 2 to 5 working days in the lower 48 states.
The product shelf life is one year. Unopened kits in salable condition are returnable. Check out Commercial Terms.
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| Do-It-Yourself Crack Injection Kits | |||
|---|---|---|---|
| Product | Price | Shipping | |
| D-I-Y Foundation Crack Repair Kit | $114 | $11 |  |
| Easy-Peel D-I-Y Crack Repair Kit | $128 | $11 | |
| D-I-Y Crack Repair Kit - Epoxy | $189 | $12 | |
| Easy-Peel D-I-Y Crack Repair Kit - Epoxy | $211 | $12 | |
| PipeTite Gap Filler Kit | $69 | $7 | |
Based on shipping by courier to the lower 48 states. For expedited shipping or shipping to other states and Canada, please inquire first by e-mail or telephone.
The Foundation Crack Repair Kit allows homeowners to repair cracks just like the pros but at a much lower cost. It is easy – check out the two videos on this page! You can repair:
Epoxy injection was originally developed to repair cracks in large concrete structures. Since epoxy is stronger than concrete, it provides a structural repair. However, you cannot hold a house foundation together by "gluing" a moving structural crack – another crack would soon develop. Structural cracks in basement walls are typically horizontal. If you have a crack that still keeps moving, consult a structural engineer.
Most basement cracks have already stabilized and just need stopping or preventing water leaks. They are usually diagonal and many start in the corner of a window. Such cracks are best repaired with expanding polyurethane polymer. Polyurethane foam remains flexible and allows for the natural movement of concrete. Contact with water helps it forcefully expand up to 20 times its volume. The crack should be wet inside but not actively leaking.
Each D-I-Y crack injection kit includes two internally split two-component cartridges of polyurethane and mixing nozzles to ensure proper mixing while injecting. The expanding foam will fill the entire length (up to 10 linear feet) and depth of the crack (up to 22" thick walls), as well as voids behind the wall. Water will never find the crack again. Click for Foam Data Sheet and Foam MSDS (PDF)
Epoxy crack injection does not only stop water but also provides structural strength. Its strength and bond with concrete exceed the strength of the concrete itself. It prevents further elongation and yawning of the crack. However, if the underlying cause of the structural stress is not resolved, a new crack may develop right next to the repaired crack. The surfaces inside the crack must be dry for epoxy to adhere.
Our D-I-Y epoxy injection kit includes four two-component epoxy cartridges for crack injection. This fills a volume of 60 cu. in. – a crack 8' long and on average 1/16" wide in a wall 10" thick (8'x12 x 1/16" x 10" = 60 cu. in.). Epoxy does not expand. It is suitable for hairline cracks but if the crack is wider, it requires proportionally more epoxy. Epoxy cures slowly and if there is a void on the outside, epoxy will run out and "disappear." This special hydrophobic epoxy is also suitable for damp cracks.
The polyurethane injection is more forgiving and reliable, particularly for do-it-yourselfers, because it is suitable for wet cracks and expands inside the crack before it can run out from the back.
If appearance of the finished repair matters, the Easy-Peel Surface Sealer provides the solution. It is packaged in two-component split cartridges for precise mixing. No guessing or mixing by hand. Each Easy-Peel Foundation Crack Repair Kit contains two Easy-Peel cartridges (see photo). After repair, you can peel off the surface seal together with injection ports all in one piece. It leaves a neat and clean concrete surface.
The standard D-I-Y Foundation Crack Repair Kit contains two jars of the two-component epoxy Surface Sealer and Port Adhesive. After "gluing" on the injection ports, spread the Surface Sealer over the crack. When the crack repair has cured, knock off the injection ports. The gray epoxy layer stays on the surface but it can be removed with a chisel or grinder.
Feedback from Customers |
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...poured cement wall cracks (hairline vertical) to stop water leaking into my finished cellar. This is by far the best DO IT YOURSELF I've ever came across. ...Contractors quoted me $650.00. .... Ray B., NY ...the absolute best thing on the market for repairing leaking cracks in poured foundations ... my 12-year old son could've performed this repair ... I did the old "back cutting and fill with hydraulic cement" repair only to find water again seeping through only 6 months later... Al D., Western NY ...amazing results from using your products. Last year I injected several cracks in my foundation, as well as a leaking pipe perforation. My basement has been completely dry ... it reduced my radon levels below the limit.. ... Bob B., MO ... I was quoted $600 by 3 companies to have the crack fixed ... First and the most important, a first grader can use this product. It took me 20 minutes to clean the crack ... 20 minutes to attach the injector ports and epoxy the wall. After 2 1/2 hours, I started injecting the sealant which took about 20 minutes. That was it, simple, fast and yesterday no leak with the snow melt. ... Mike K., NY ... Your PipeTite Injection Kit has successfully fixed the leak around a pipe through my basement wall. It has been leaking for several years. Caulk and hydraulic cement did not work ... Charles M., NY See more Testimonials |
The size of the holes drilled through foundation walls is always a size larger than the pipes and workers just stuff some mortar into the void. Over time, the mortar will inevitably deteriorate and start leaking water. These recurrent water leaks are an endless nuisance to many a homeowner. Hydraulic cement does not stick to pipes and caulk will get loose.
The PipeTite Gap Filler Kit provides a permanent solution for pipe penetrations through poured concrete walls. It is very similar to the D-I-Y Foundation Crack Repair Kit but smaller. The polyurethane foam tenaciously adheres to concrete, plastic, and metals. It beats caulking, mortar, hydraulic cement, or patching compounds. It will never separate, peel, or leak – it is permanent!
The expanding polyurethane will fill the entire gap around the pipe and water will never get in again. It also protects the concrete by preventing water from getting inside the gap. All you need is a common caulking gun.
Application is very similar to crack injection:
First, glue on one or more injection ports around the pipe and enclose the gap with the surface sealer. Let cure and inject the polyurethane polymer, which forcefully expands and fills the entire void with polyurethane foam. In case there already is solid mortar, you can drill holes through it with a masonry bit and inject the polyurethane sealant through it.
Form wire ties: These steel wires or rods hold the forms together when foundation walls are poured. But once the exterior waterproofing breaks down, water attacks the form ties, making them rust or fall out. Water starts squirting into the basement. Caulking or patching are only temporary fixes. Glue an injection port right on top of the hole and inject the PipeTite expandable urethane to fill the void and stop the leak permanently.
The RadonSeal Foundation Crack Repair Kit contains all materials and accessories needed for the repair of a typical 8-10 linear foot concrete crack (nitrile gloves, safety glasses, and drop sheet included.) The only tool you need is a conventional caulking gun.
The crack injection procedure is simple. No special skills are required - just patience. Follow these basic steps:
Check the detailed Polyurethane Crack Repair Guide (PDF)
PATIENCE! During the injection, squeeze the caulking gun very gently with only about 20 lbs. of pressure to allow the polyurethane to penetrate into hairline cracks and the foam to expand. This means spending 2-5 minutes on each port.
ACTIVE LEAKS: Wait until the leak stops. Running water prevents the surface sealer, as well as the injected polymer, from adhering properly in the leaking area. Or hire a contractor who can use the high-pressure injection method.
HAIRLINE CRACKS: Heating up the polyurethane lowers its viscosity further and makes the injection easier into hairline cracks. Fill a pot with hot water and submerge the urethane cartridges for about 15 minutes.
CORNER CRACKS: The base of each injection port has pre-cut slits. Just fold the base and hold the port in the corner until the glue holds. Or just cut the base off. You can also request that we ship corner ports only.
ABOVE-GRADE CRACKS: If there is a void on the other side of the crack, the polyurethane foam would wastefully expand into the air. Seal the other side of the crack first with caulk or the surface sealer.
EXTRA POLYURETHANE NEEDED: If there is a large void behind the wall, it will consume more polyurethane foam, typically in the lowest injection port. You can order additional cartridges by phone.
CLEANUP: You can clean spilled urethane with mineral spirits.
TEMPERATURE: The concrete temperature should be above 40° F, preferably above 50° F, which is not a problem in basements.
Further Information (PDF):
