Crack Stitch Limited Lifetime Warranty Terms & Conditions

This warranty provides for replacement of defective components and associated labor should a Fortress Crack Stitch fail from lateral crack expansion or workmanship of material due to manufacturer’s defects. Fortress Stabilization Systems conditionally warrants the Crack Stitch for the usable lifetime of the substrate on which it was installed.


The product is covered by warranty only when properly installed by a professional contractor in conjunction with Fortress provided adhesives. Crack Stitches must be installed no more than 10” apart to stop further lateral expansion of a 1” wide or smaller crack in concrete or a masonry unit, and must be installed in a manner that addresses the expansive direction of the crack, utilizing the strength of the carbon fiber tows. Stitch must be installed with equal length of stitch on either side of the crack. Cracks must be filled or injected with a high compression resin or cementitious material. Should a stitch break, Fortress will replace the failed product at no cost and reimburse labor to a professional contractor up to $50 for a single stitch, and $25 per additional broken stitch.


EXCLUSIONS: Failure due to acts of nature, including but not limited to: earthquake, flood, and fire, and/or collision by equipment or vehicle, and/or construction to the substrate. Warranty does not apply to movement of concrete or masonry unit in a direction that does not utilize the tensile strength of the Crack Stitch carbon fiber tows, including compression of the crack on which it was installed. If underlying conditions that caused the crack are not addressed, additional cracking may occur in close proximity to the installed Crack Stitches, such additional cracking and related repair costs shall not be covered by this warranty. The Crack Stitch is not a water proofing solution but may be used in conjunction with some water proofing solutions and crack injections; warranty does not cover failures caused by failed water proofing installations  or injections in which the Crack Stitch was also installed.


Fortress authorized installers are not agents of Fortress Stabilization Systems, LLC.


If a warranty issue should arise, contact the installing contractor first, then Fortress at (800) 207-6204 or email us at