Preventing and Repairing Cracks in Boundary Walls
Damaged boundary walls around your property can spoil the whole look and feel of your property. Furthermore, cracked and leaning walls can also pose a danger to passers-by should the wall fall over.
This article explains the correct way to repair boundary walls and install expansion joints!
Firstly, if your walls have ugly cracks and broken plasterwork and brickwork at the expansion joints do not plaster them up as shown in the photos below!
Furthermore, the work done on these boundary walls will result in more cracking in the walls!
Many boundary walls and retaining walls may fail prematurely due to the lack of provision for movement. However, this is usually not a fault in the materials used, but usually a lack of proper design. Even when the design is correct, the construction of the boundary wall and expansion joints are often faulty.
What is an expansion joint?
It is a separation between two portions of the same structure. A butt joint in a boundary wall is not an expansion joint!
Expansion joints in boundary walls
When building a boundary wall, an expansion joint is a separation designed to relieve stress on building materials caused by movement induced by thermal expansion and contraction. They are therefore specifically provided in boundary walls to avoid cracks occurring in the wall.
Temperature changes and seasonal changes mostly cause the movement in the boundary walls. However, expansion joints also permit movement due to ground settlement, seismic events and expansive soils.Continue reading “Boundary Walls”