The ARMOR Crack Repair System utilizes a specially knitted fabric that expands as the crack widens. Fabrics that do not expand (such as fiberglass) simply tear or delaminate as the crack widens during the cold winter months. Our fabric, however, stretches similar to t-shirt material. The secret to making our fabric work best is how it is purposely NOT bonded to the court in the vicinity of the crack (sometimes called a “slipsheet”). This allows more movement of the crack without the fabric tearing or delaminating from the surface. Thus, the reason why the ARMOR Crack Repair System works so well is that it effectively spreads the stress of the crack over a six-inch wide area of expandable fabric.

Although the ARMOR Crack Repair System will not prevent cracks from developing elsewhere on the court, or prevent cracks from growing in length out beyond the repair, it has successfully kept repaired structural cracks from reappearing on the surface of tennis courts for as long as 20 years. There are some limitations and not all cracks are repairable with our product, so talk to your contractor about your specific court.

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