CRACK STITCHING

Crack stitching is the masonry repair method for repairing cracked walls and ensuring that they are reinforced. Cracks occur in buildings due to movement of one form or another and therefore, crack stitching is often used in conjunction with other methods of structural repair such as lateral restraint and reconnecting perpendicular walls.

How does crack stitching work?

Crack stitching with helical bars delivers an effective and durable masonry repair by introducing into the wall fully concealed tension straps, which strengthen fractured masonry and cracked brickwork, block-work or stonework.A series of high-tensile, stainless steel, helical bars are inserted into slots cut into the bed joints and extend 500mm either side, across the crack.  The bars stitch or strap the masonry either side of the crack back together and are bonded into the wall using a gout which is polymer modified, thixotropic, cementitious and does not shrink.  Due to the high fin profile and continuous deep trough helix bar interlocks with grout and forms an excellent bond. The crack is then also deeply filled with grout to restore its strength and to weatherproof the masonry.

Crack stitching is a steadfast, rapid and fully concealed method of reinforcing cracked walls.  The helical bars are extremely easy to install with minimal disruption.