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Selecting concrete repair products Nextstar Store

Selecting the right solution to Concrete Crack Repair

Concrete cracks may cause very serious problems. One of the most common is water leakage. Freeze/thaw damage and corrosion of the rebar can result in structural weakness and even failure which can all be contributed to cracks and water infiltration.

Now most of these problems can be economically resolved using NextStar's low-pressure injection systems. It has been proven to accomplish two major purposes. One to stop water leakage and the other to maintain or even to restore design strength for slabs, construction control joints, basement, and foundation walls.

Controlling leaking foundations or basement walls from water infiltration of non-structural problems can be best repaired with POLYURETHANE.   Polyurethane has some obvious advantages. Read about the foundations of crack repair. 


Foam expands to fill cavities and voids
Deep penetration into small cracks
Excellent bond to wet surface
Inert after curing
Tolerates freeze-thaw cycle/movement

The most economical repair method
Easy to handle
99% success rate for novice applicator
Stops leaks permanently & quickly
Available in single or dual component

Repairing large amounts of cracks or crumbling walls that may be bowed, weakened and may have shifted that are not actively leaking should be repaired with EPOXY.

Epoxy will restore the design strength of the wall. Epoxies are also very good for super fine hairline cracks. Epoxies can stop future water leaks but have a much slower cure time so they should not be used on an active leak until the leaking has stopped before injecting with epoxy. Epoxy repairs can be more costly than polyurethanes but provide a structural bond.

Epoxy provides high structural strength
Deep penetration into small cracks
Medium or short gel times
Inert after curing
Tolerate unavoidable debris
Compatible with Carbon Fiber

Easy to handle
90% success rate for novice applicator
Stops leaks permanently 
Available in various viscosities
Monolithic Repair

Reinforcing concrete with carbon fiber and kevlar.

Foundations and other cement structures will often crack as a result of settling, soil pressure, water damage, drying shrinkage, thermal movement, or other causes. As most homeowners know, basement wall fractures are common and a fact of life. Most fractures are minor and cause few problems. However, other fractures can grow over time and cause structural integrity or, more commonly, water leakage. If the fracture is large or growing over time, simple injection techniques are not an appropriate or lasting fix. Under these circumstances, the foundation repair must stabilize the fracture, i.e.: prevent it from expanding and getting larger. To accomplish this, reinforcement and stabilization is required.

Provides high structural strength
Stronger than steel
Many formats ie: rods, straps, and staples
Will not rot or degrade over time
Used in conjunction with epoxy injection

Easy to handle
Faster installation than alternative methods
Lower costs
Does not interfere with finishing surface
Monolithic repair

There are 6 ways in which a cement fracture in a below-grade poured wall generally moves:

•Tensile/inward: due to lateral loading
•Outward: due to shrinkage of soils
•Opening: due to thermal changes
•Closing: due to thermal changes, i.e. cold, wet, dry, etc.
•Shear: due to differential loading
•Combination: all of the above conditions, plus the added load of the structure
Concrete crack repair employing the Fortress Stabilization Systems Carbon Fiber Countersunk Staples are designed to transfer load away from the fracture, thus addressing the 6-points defined above and creates a long-lasting fix. Concrete crack repair and stopping the shifting walls with Carbon-fiber is a proven application and technology that works as well in your home as in commercial buildings, bridges, mines, road surfaces, and in any other applications where reinforcement and reparation are need.

    DownLoad our Crack Guage tool PDF File Basic Injection Procedure 
Print NextStar Crack GuageMeasure crack sizeMeaure Crack size
Leaking basement walls up to 3/8in wide

10 ft DIY Polyurethane injection Urethane kit
20 ft DIY Crack Injection kit 102 Urethane kit
30 ft Polyurethane crack injection kit DIY Urethane kit
60 ft Polyurethane Crack Injection kit DIY Urethane kit

Hairline Leaking cracks

Auto-Injector kit with #4 ULV Epoxy super fine cracks
30 ft Epoxy Crack Injection Kit when dry Low Viscosity Epoxy

Leaking holes/snap ties & pipe openings

kit with #4 Epoxy for snap ties when dry
10ft DIY Semi Pro Polyurethane crack injection kit Urethane kit for holes & around pipes
Contractor kit with 120 Structural foam for very large holes

Hairline Non-Leaking cracks

kit with LV Urethane
Contractor kit with #4 Epoxy when dry
Low viscosity Epoxy Kit when dry

Non-leaking cracks

Epoxy or urethane can be used.
Structural cracks only repair with Epoxy

Large Cracks > 3/8 in wide

carbon fiber staples or stitches, when used with epoxy, can stabilize cracks from re-cracking

10 ft DIY or 20 ft DIY Urethane kits
Contractor kit with 120 Structural foam
Custom Epoxy kit with Extra High Viscosity Epoxy
Epoxy and carbon fiber stitch kit

Cracks that seem to be getting wider over time

Repair with Epoxy injection and carbon fiber Stitches
Ultimate Crack repair kit
Carbon fiber structural repair

Bowed wall with horizontal cracks

Epoxy Injection and carbon fiber reinforcement
Epoxy and carbon fiber staple stitch kit
Staple Kit
Grid Strap Kit for bowed walls
Grid Strap corner Kit for bowed corner walls

Repair of cracked Slabs

Fast non-structural crack repair of slabs
E555 Slab crack repair kit
Repair of decorative concrete or stone
Match- Crete Clear Kit
Structural repair of slabs
10 Minute Mender (fast repairs)

Selecting the right products for repairing concrete foundations,Basement concrete wall cracks and leaks.
Your Online Foundation and concrete crack repair store