It is possible to use crack injections only on poured concrete wall cracks. Concrete block walls have hollow cores which is why these injections do not
work in them. Crack injections are highly preferred today for repairing foundation cracks as it is applied from the inside of the wall and there is no
necessity for digging on the outside. Whether the crack is wide, which means up to ½”, or hairline, these injections work
wonderfully in filling them up.
The entire depth and length of the crack is filled up by the viscous liquid injected into them. Crack injections are extremely effective in eliminating
leakage of water on a permanent basis. You can be assured that in future, water will not be able to enter into the building through the crack. The
process of injecting the cracks with Polyurethane or epoxies does not require any drilling.
There are many crack injection kits available. Our kits are specially manufactured keeping the ease of use in mind. While the material supplied in the
kit is as good as the ones used by pros, the kit itself is very simple and easy to use even for a novice DIY enthusiast.
You can choose from either the standard polyurethane injection kits that completely fills the crack by forcefully expanding or the epoxy injection kits
that provide structural strength. Epoxy must be used in the right amount to ensure that it fills the entire crack length and width as it does not
expand like the polyurethane.
Polyurethane Injection
The best option for concrete repair is polyurethane. When it comes into contact with water, polyurethane expands to fill the crack completely. This
stops any leakage of water permanently. Being flexible, polyurethane does not allow water to get into the concrete.
If there is a structural problem and the concrete is dry, then epoxy injection is highly recommended. Before choosing between the injections, you must
check for any moisture behind the drywall or panel. This can be done in several ways.
Usually, a building inspector identifies moisture by checking for rusted heaters and steel port base, damp wall base, mildew in carpets, peeling of
floor tiles, a white powdery substance or efflorescence on the concrete, decay, discoloration or stains on the wooden panelling, posts, partitions and
drywall, moss growth, improper water grading, rain gutter damage, condensation on concrete and windows and a musty smell.
Periodically, check your foundation to find any visible cracks or leaks in the concrete, any holes in the floor slab and foundation wall joint and in
the floor expansion control joints. There are methods with which it is possible to check for transmission of moisture through concrete.
The easiest method is to cut a square piece of plastic foil or sheeting and place it on the area to be tested. Use a duct tape to seal the edges and
leave it for a couple of days. If you find damp spots or water droplets in the plastic, then you can be sure there is moisture in the concrete. It is
then time to start looking for cracks and call in experts to fill them or do it yourself with our high quality DIY foundation crack repair kits.