Brickwork Repair Suggestions for Sagging Brick
Brickwork repair is inevitable if you have brick surfaces in your home. It is common for exterior brick installations to sag at some point, especially patios. This may be traced to improper techniques used during installation. However, even well laid bricks surfaces may sink at some point due to weather effects. Sometimes, the ground underneath the patio may undergo some readjustment. Structural adjustments that occur as the ground settles cause the bricks to sag. Some helpful suggestions are given below to help you repair sagging brick that occurs in a patio.
Identify Sagging Bricks
It is vital that you first determine which bricks have sunk on your patio. Use a level bar to help you find bricks that are below the surface. Place the level bar on the brick surface. Check under the bar for gaps between the bar and bricks. Use a chalk to mark the sunken bricks. You also need to mark bricks that push up beyond the level of the bar. Drag the bar over the entire patio surface to find the sunken and heaved areas. Work in small sections to ensure that you check the entire surface. This will ensure that you remove all the bricks that lie out of range.
Removal of Sagging Bricks
Use a trowel to remove one of the sunken bricks from the patio surface. Follow with removal of the rest of the marked bricks. Arrange the bricks removed alongside the patio in the same configuration as found on the patio. This makes it easier to re-install the bricks later on once you’ve adjusted the foundation.
Obtain limestone pea gravel and construction grade sand from a building supply center. Pour pea gravel into the excavated area. Use a rake to distribute the gravel evenly in the site. Use a hand tamper to pack the gravel onto the ground. You should aim to create a level surface. The gravel should be 3 inches beneath the level of the patio surface. Pour sand over the pea gravel. Distribute the sand evenly over the gravel. Tamper the sand so that it creates a compact 1 inch layer over the gravel.
Re-Installation of Bricks
Once you’ve created a solid and stable foundation, you can proceed to return the bricks removed earlier. Simply put back the bricks in the order they were removed. It helps if you make use of a rubber mallet to tap the individual bricks on the top. This helps to secure the bricks into the sand underneath. It also helps to create a level surface.
Use fine grade sand to help close the joints in between the bricks. Sprinkle the sand over the patio surface. Spread the sand with a stiff-bristled broom so that it falls into the joints. This helps to hold the bricks firmly in place and prevents sagging. Use a garden hose with spray attachment to spray water over the patio surface. This helps to clear the loose sand from the surface. It also allows the sand between the joints to settle in more securely. Once the patio had dried, use a soft broom to clear traces of sand from the surface.