CRACKED BRICK STITCHING & CRACK REPAIRS
Many houses in the UK constructed with cavity walls do not have lintel over the windows in the outer leaf. The brickwork - often referred to as soldier coursing, was supported by the load bearing window frame. Over time, the brickwork loading slumps, and causes the frame to bend and cracks appear in the mortar pointing.
Cracks In buildings can develop for a number of different reasons. It is important to diagnose the root cause of the cracking in order to be able to recommend the correct crack repair method. Most cracks can be diagnosed by the crack pattern and the position of the crack on the wall or building.
Another common problem to masonry movement in a building is cracking of both the masonry itself and cracks in the mortar bed joints. This can either be horizontal cracking or ‘stepped’ cracking, or a combination of both.
SIGNS OF DAMAGED WALLS FROM SUBSIDENCE FOUNDATION CRACKS
Movement of foundations is hard to detect at its early stages because the movement starts below ground level which means you cannot see it happening until the initial shift of the foundation has taken place and then you will start to see the signs of subsidence which are:
- Cracks in walls and floors
- Cracks in bricks and masonry
- Walls bulging outward
- Gaps between floors, walls and ceiling
- Cracks above openings doors and windows
- Cracked moulding or architectural features
- Sticking of doors and windows
- Uneven floors
WHAT IS THE SOLUTION TO THE PROBLEM
To strengthen the masonry, high grade stainless helical bars are inserted into the bed joints. These act as new beams in the case of lintel reinforcement. Additional helical bars may also be installed vertically up through the soldier coursing to tie the bricks to the newly created beam.
- Wall stabilisation can be used to repair:
- Horizontal cracks
- Cracks to render coats
- Bowing walls
FEATURES AND BENEFITS:
- Easily fixed, even in weak materials
- Invisible when installed
- Very cost effective, saves having to install traditional lintels
- Versatile applications, designed for the job
- Cementitious based and therefore sympathetic to the original structure
- A 65mm deep chase is made into the mortar joint to remove the bed joint
- After the chase has been cleaned out, a bead of grout or two-part epoxy resin is inserted
- Helical stainless steel bars are then cut to the precise length of the cut - to provide strength to the joint.
- The bars are then set into the chase and pushed into the grout. A second bead of grout is then applied.
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