Besser & Concrete Block Retaining Walls In Belmont

A besser block wall is a solid, monolithic structure - hollow blocks on a reinforced footing, threaded with steel reo and core-filled with concrete, then usually rendered for a smooth finish. A sleeper wall uses posts and infill panels and has a more linear, layered look. Block generally costs more and takes longer because of the footing, reo, core-fill and render, but gives a finished, rendered face some homeowners prefer. Both need the same drainage behind them. We will help you choose based on the look, strength and budget you are after.

The reinforced concrete footing spreads the load and anchors the wall, while the steel reo and concrete core-fill tie the blocks into one solid structure rather than loose blockwork. Without them the wall would have far less strength and would not perform as a retaining structure should. The footing size and reo are set by the engineered design for your wall height and ground conditions. Getting the footing, reo and core-fill right is exactly why block walls reward an experienced builder.

Absolutely - a block wall fails from trapped water just like any other retaining wall. Water building up behind the wall creates hydrostatic pressure, which is the number-one cause of retaining-wall failure. Behind every block wall we install an agi-drain along the base, free-draining aggregate backfill, geofabric to keep the drain clear, and weep holes through the face to relieve pressure. On the sloping, high-runoff blocks around Charlestown and Warners Bay this drainage work is every bit as important as the blockwork itself.

Yes, that is one of the main reasons homeowners choose block. Once the wall is built and cured it can be rendered for a smooth finish and then painted or textured to match your home, which is not something you get with a sleeper wall. The render is about appearance and does not change how the wall performs structurally, which comes down to the footing, reo, core-fill and drainage. Render is usually an added cost on top of the structural wall, and we will itemise it clearly in your quote.

As a general guide, block walls over roughly a metre, walls carrying a surcharge such as a driveway or building above, or walls near a boundary usually need an engineering design to AS4678 and often council approval or a Complying Development Certificate through a private certifier. The engineer designs the wall, including the footing and reo, and the council or certifier approves it - we build to that engineered design and can arrange or advise on both. Because block walls are often used for taller, load-bearing situations, engineering is common. We will tell you honestly what your wall requires.

They can be, but soft or low-lying ground near the lake edge, with a potentially high water table, is a genuine footing consideration for a heavy block wall. On near-shore blocks around Speers Point or Warners Bay the footings may need to go deeper or wider to reach adequate bearing, which the engineering will determine. We do not assume the ground - a site inspection and, where required, engineering input set the actual footing design. That honest, site-specific approach is how we keep a heavy block wall standing on softer ground.