Masonry Repairs

Bowing Walls:

This is very common on end gable walls of terraced housing and old properties where the floor joists are running front to back of the property. With the floor joist running parallel to the wall there is no connection of the wall into the rest of the building to complete the structural diaphragm of the property. MacLennan can prepare a quotation where we connect the wall back to floor and ceiling joist and where necessary also connect the wall to internal stud partition walls or spine walls.

Delamination:

Delamination is a form of bowing which happens in large thick solid walls where the internal skin has come away from the external skin leaving the rubble filled void in the middle of the wall to drop giving you the impression of bulging from the outside but no structural damage to the inside. We can reconnect the external masonry back to the internal masonry avoiding the need of a costly rebuild.

Wall Ties:

MacLennan are experts in wall tie installation, using the latest 8mm diameter grade 316 austenitic stainless steel Helical wall tie we can install new ties quickly and easily and still provide you with a 25yr guarantee.

If you see horizontal cracking to your property and you have a cavity wall then that would suggest that over time moisture has got into the brickwork and started to corrode the wall ties making them expand and lift the brickwork above giving you the cracking.

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    MASONRY REPAIRS
    – Basingstoke Water Tower.
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    MASONRY REPAIRS
    – Bowing Walls.
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    MASONRY REPAIRS
    – Delamintion Structural Repair.
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    MASONRY REPAIRS
    – Helical Remedial Ties.
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The cracking should appear ever 450mm vertically. MacLennan can isolate the old steel ties to stop future movement and install new ties at the recommended pattern, as these ties are stainless steel they are less likely to corrode. With one of these ties we can get between a 1.5kn and 2.5kn pull out to make sure this is the correct tie application. There are a numerous amount of variations of ties we can use to suit all building materials.

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