Epoxy Injection Foundation Crack Repairs

The Facts about Epoxy Injection

The repair of basement and crawl space foundation cracks with our low-pressure injection system requires the use of epoxy or polyurethane. Pending the applicator’s personal preference and/or type of crack, possibly injection material is acceptable for most foundation cracks.

For the typical wet and leaking foundation crack that introduces no structural danger from the foundation, Our company typically urges the injection of polyurethane foam. Its flexibility allows for easier injection into foundation cracks. The actual benefit is its growth ability. As the two-part polyurethane reacts inside the crack (the inclusion of water inside the crack will also reap the response of the polyurethane), it expands throughout the crack, literally moving throughout the crack, filling any void areas. .

After the foundation’s structural integrity is compromised by a large/wide crack or the buildup of numerous cracks within the exact same area, the extra strength of epoxy injection is necessary. With the injection of epoxy into a base crack, the end result is a repaired crack with concrete that’s bonded together, and now significantly stronger than the existing foundation wall. .

About Epoxy Foundation Crack Injection

Horizontal cracks in the foundation, or wall cracks wider than a quarter of an inch are general hints that the crack could be structural. Structural cracks typically form as a result of wall motion from thermal changes, uneven loading and settling of the footing, soil pressure and/or soil shrinkage.

If the area surrounding the foundation is still busy (i.e. continued soil settlement, especially in colder climates where the soil experiences repeated freeze/thaw cycles), epoxy by itself might not be adequate to prevent future cracks around the initially repaired area. Additional reinforcement most likely will be necessary. The use of Carbon Fiber Countersunk Staples following the injection procedure can supply that reinforcement – in circumstances where the base’s structural strength is severely compromised, the use of Carbon Fiber Grid Straps and Neckties may be necessary. .

Additional Note: For applicators who especially prefer polyurethane as opposed to epoxy, Emecole Metro 120 Structural Polyurethane is an Emecole Metro manufactured specially formulated structural strength polyurethane which accommodates structural foundation crack repairs by means of Carbon Fiber Staples.

The choice between epoxy and polyurethane foam for concrete crack injection often is made based on the applicator’s individual preference. Some contractors and businesses may prefer to exclusively use one material for all repairs. Normally, polyurethane foam is more user-friendly as a consequence of it’s capability to enlarge – this generally makes it easier for applicator’s to properly make certain that the entire crack has indeed been properly filled. .

Proper Epoxy Crack Injection

While the injection of epoxy contributes to additional bonding characteristics, the use of polyurethane typically is sufficient to properly repair most cracks which are simply wet and leaking and do not pose any structural dangers. The added strength which comes with epoxy is crucial for the repair of foundation cracks in which the structural integrity of the foundation wall may be compromised. .

This kit includes (4) 22 oz (300cc x 300cc) capsules of commercial grade A-Tech 212 LV epoxy. Inject concrete re-enforcing epoxy in your basement cracks. The kit uses the very same materials our professional contractor customers use to fix concrete cracks in basements, retaining walls, sewers and manholes.

Easy to use written instructions and a how to video is included. The kit includes a spring drive injection gun that smoothly fills the crack with epoxy.

The mixers snap tightly into our injection ports to minimize leakage. There is no drilling required with this kit. All repairs are done from the interior side of the basement so there is no digging up the outside of the building. .

Components of Epoxy Crack Injection

While fixing cracks from the outside was the original remedy, the most common repair method today is filling and sealing the crack from the inside, commonly called crack injection.

In a recent blog we compared two different substances used in the injection process, epoxy and urethane.   I’m not going to restate that comparison, but’m here to tell you why and how injecting epoxy resin to base cracks just doesn’t work in addition to using urethane.  As a basement waterproofing professional who has had experience with both materials, I would like our customers to understand the issues that may arise from the use of epoxy. .

Epoxy, as you might know, consists of two components, a resin and a hardener.  The epoxy mixture is a liquid, which leads to several of the difficulties when using it to fill base cracks.

Liquid epoxy can really run from the crack to the exterior and leach into the surrounding soil.  This leaves voids in the fix that can allow water to seep in, especially at the top of the crack because gravity causes the liquid to settle.

If the crack has been previously injected and the first epoxy has cracked, it can be near impossible to get the exact place to re-inject and because the rest of the fix is a solid mass, the epoxy cannot flow to discover the cracks.

The Main Principles Of Epoxy Crack Injection

If epoxy is injected while the crack is leaking, the water seepage might actually create channels through the epoxy, creating leaks in the new repair.

Epoxy will crack if there is subsequent shifting or movement of the foundation and basement waterproofing companies using it that way won’t warranty epoxy alone as a structural repair.  However, epoxy may be an effective crack fix if it is accompanied by structural repairs to the base, like piers or beams, which stabilize the foundation against further movement. .

Some basement waterproofing companies still use epoxy exclusively to fill base cracks and I really don’t understand why.  Like any business in the 21st Century, basement waterproofing has benefited from technological improvements and a modern cellar waterproofing company uses them to benefit its clients.

In U.S. Waterproofing, we repair thousands of foundation cracks every year, adding to our total of over 300,000 homes with dry basements since we started out in 1957.  Wed be pleased to describe the best way to repair cracks in your foundation and our advice is free, so get in touch! .

Several masonry patching products, such as hydraulic cement, do an adequate job of filling cracks in concrete walls.

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