Damaged Lintels Above Windows & Doors in Sydney CBD

Why we see this constantly in the CBD

Older CBD buildings often have sandstone or timber lintels above windows that have failed under decades of load. Rusted steel lintels in early-20th-century commercial buildings are another constant — the steel expands as it rusts and cracks the brickwork above. We see this through the Pyrmont and Ultimo warehouse stock and across heritage shopfronts. Replacement needs structural steel sized to the load and proper corrosion protection so we are not back in 30 years.

Sydney CBD is dominated by 19th-century sandstone commercial buildings, Victorian-era warehouses converted to apartments, and pockets of colonial brickwork around The Rocks. Most heritage buildings here use soft lime mortars and Hawkesbury or Pyrmont sandstone. The mix of foot traffic, tight access, and strict heritage controls means jobs need careful planning.

Signs to watch for on your property

• Rust stains bleeding down brickwork from above a window or door
• Cracks radiating from the corners of openings (often stair-step)
• Bricks loose, bulging, or bowing above windows
• Window or door no longer closing properly
• Visible rust on any exposed lintel ends
• Internal cracks in plaster above the opening
• Gaps opening between the lintel and the brickwork

How we fix it properly

1. 1. Assess and prop

   We confirm the lintel is failing, check the extent of brick damage, and install temporary propping to support the load above. Propping stays in place throughout the work.

2. 2. Remove damaged brickwork

   Bricks above the lintel that are cracked, spalled or displaced come out carefully. We salvage what we can for reuse or replacement matching. Goal is clean access to remove the lintel.

3. 3. Cut out the old lintel

   The failed steel lintel is cut out and removed. The bearing points at each end are cleaned back to sound masonry.

4. 4. Install new lintel

   A new lintel — galvanised steel, stainless steel, or precast concrete depending on span and load — is installed with correct bearing at each end and proper DPC to prevent future rusting.

5. 5. Rebuild brickwork

   Matched bricks and lime mortar rebuild the damaged area. Replacement bricks sourced to match colour, size and texture. Pointing matched to surrounding mortar. Done right, the repair is invisible when finished.