Rusted Lintel Replacement
Lintels perform a core function in supporting brickwork above the doors and windows in a building.
Many older buildings in Perth were constructed before the Galvanising process, and there was no requirement under the relevant building by-laws at that time.
Living near the ocean is gorgeous, but the salty air has a big impact on the old painted lintels. As a result, large numbers of Perth homes have rusted, unstable lintels that need to be replaced. Does that include you?
Why are rusted lintels so bad?
Rust occupies many times the volume of the steel it displaces, and a rusting lintel is capable of lifting several dozen courses of bricks above it. This can cause cracks above doors or windows, sagging brickwork, or gaps forming where they shouldn’t. A failing lintel puts pressure on the surrounding brickwork and, left untreated, can lead to serious structural damage.
- Redistribute load
- Stabilise the wall
- Prevent crack reopening
- Restore appearance
A common problem with limestone - lateral & settlement cracks
Limestone can expand and contract with the weather, so incorrect hard cement mortars (sometimes incorrectly used for limestone repointing) can act as a wedge to push limestone cracks further apart.
Before
During
After
Things to look for
The old painted lintels have a lifespan of around 30 years, but can fail sooner in our salty air. Some things that may indicate a rusted/failing lintel:
Cracks forming above doors or windows
Stepped cracking in brickwork near openings
Bowing or sagging bricks
Gaps between brickwork and window frames
Rust stains on brickwork
Doors or windows sticking or becoming hard to open
Frequently Asked Questions about
Lintel replacement
How long will it last?
The old painted lintels have a lifespan of around 30 years, but galvanised lintels will see your home through 50-80 years.
Mortarfix - local expertise you can trust
Brickwork behaves differently depending on climate, age, and materials.
Mortarfix has been serving the Perth Metro region for 40+ years, and understands the local climate and conditions that affect your brick work. We know how intense sun, rain, coastal air, and time affect mortar in Perth, and bring that expertise into every project.
You’ll get honest advice, clear communication, and workmanship you can rely on.