Seal Your Wall Cracks Permanently

In Virginia, North Carolina, and Tennessee homes, you want to solve your basement wall crack problems permanently. Simply filling that crack over and over is expensive and still doesn't make your basement livable. Moisture seeps through cracks and can destroy any valuable furnishings or materials left in storage.

Our experience in repairing wall cracks over the years has proved that the WEBAC system is the most reliable in creating a permanent solution for your walls. There are two types of repair systems polyurethane and epoxy. Both have their uses for different situations.

Why Walls Crack

The reason for cracks in basement and foundation walls are natural. In spite of all the best efforts of engineers, architects and contractors, structures develop cracks in unanticipated places. When the structure settles and any movement finally stops, the crack becomes stable. Most cracks, however, continue to work  due to several influences such as thermal or stress induced forces and soil moisture changes. Crack movement usually occurs in cycles. Cracks contract and expand periodically over time, which may be as long as a year or as short as several hours. Since most structures experience periodic movement, rigid crack repair materials often fail or cause other cracks in areas nearby. Therefore, even if water infiltration was successfully stopped initially, the ongoing movement of the structure might cause a new failure.

Polyurethane injection solves water leaks

Epoxy injection resins, when used alone, usually fail to stop active water leakage because of their slow reaction time and inability to bond to wet surfaces; this failure is resolved with the WEBAC Polyurethane System. The actively flowing water will be stopped by injecting WEBAC 151/157 which reacts quickly with the water to form an expanding foam. The final product is a semirigid or flexible closed-cell and strong bonding seal.

The WEBAC Flexible Polyurethane Injection System was designed with the natural cyclical expansion/constraction of wall cracks in mind. It has been proven to be of superior quality and unique in its completeness in the injection industry. WEBAC 151/157 and the WEBAC 1400 Resin Line have been designed for leakage repair in problem areas such as expanding and contracting cracks, expansion joints and cold joints. WEBAC polyurethane resins form a flexible gasket in the defective concrete, thus stopping the leak and tolerating movement of the structure.

Advantages of the WEBAC Polyurethane System

• Negative side application possible
• Deep penetration into very small cracks
• Foam increases in volume to fill cavities and voids
• Adjustable gel times
• Excellent bond to wet surfaces
• Underwater injection approved
• Good elastic strength, tolerant of movement
• Inert after curing, constant volume, no shrinkage
• Tolerates unavoidable debris
• Approved for contact with potable water
• Easy to handle
• Tolerant to mixing variations and field conditions
• Materials within the system are compatible
• Does not create new cracks

Epoxy Resins for Structural Repair

Semi-flexible and flexible sealants are usually the best solution for crack and joint related problems. Nevertheless there are conditions where structural repair is necessary and specified. Structural strength is achieved by using WEBAC 4000/4040 epoxy injection resins. Due to the unique properties of the WEBAC 4000 resins and WEBAC 4040 epoxy injection resins, it is possible to inject this resin deeply into concrete joints, hairline cracks and fissures.

WEBAC epoxy resins provide very high bond and compressive strength, and can restore cracked concrete to a complete one-piece structure. Depending on the job, injection can be done with low pressure and high pressure systems. Low pressure systems commonly utilize "glue on" surface ports. High pressure injection is characterized by the use of mechanical packers.

The low pressure injection method is more popular in epoxy resin injection and usually achieves good results.

Although most epoxy injection can be performed with single component polyurethane injection equipment, it is recommended to use specialized epoxy injection gear to meet the specific material properties. We utilize a unique two-component pump which allows for handling a larger-scale, more complex job. The two-component set-up prevents mishaps and also requires less cleaning maintenence. This saves both the client and installer time and money.

Advantages of the WEBAC Epoxy System

• Negative side application possible
• Deep penetration into very small cracks
• Medium or short gel time
• Bond to moist surfaces
• Underwater injection approved
• High structural strength
• Inert after curing, constant volume, no shrinkage
• Tolerate unavoidable debris
• Approved for contact with potable water
• Easy to handle
• Tolerant to mixing variations and field conditions