Every year, the same roofing mistakes show up across homes in Sydney suburbs. Most are made with good intentions—usually to save money—but they often lead to more expensive repairs down the track.
1. Sealing broken roof tiles with silicone instead of replacing them
Using silicone on cracked or broken roof tiles might seem like a quick fix, but it’s only temporary. Silicone degrades over time, disrupts proper water runoff, and can actually cause leaks to reappear.
The correct solution is simple: always replace damaged roof tiles to maintain proper drainage and long-term durability.
2. Applying silicone around whirlybirds
Many homeowners try to waterproof around whirlybirds (roofventilators) with silicone. The problem is that once the silicone lifts or cracks, it can trap water instead of directing it away.
This creates a hidden leak risk inside your roof cavity. Proper flashing and installation methods—not silicone—are the right way to protect these areas.
3. Walking on valley tiles
Valley tiles are one of the most fragile parts of a tiled roof because they are cut to fit the valley channel. Stepping on them can easily cause cracks or breaks.
Professional roofers avoid this by stepping over valleys and only walking on full tiles. If you need to access your roof, it’s best to leave it to experienced professionals.
4. Securing slipped valley tiles with silicone
Small cut tiles in roof valleys can sometimes slip out of position, which blocks water flow and leads to pooling or leaks.
A common mistake is using silicone to hold them in place. This doesn’t last and can worsen the issue. The correct fix is to use valley clips, which are specifically designed to secure tiles safely and allow proper drainage.
5. Hiring cheap “roof restoration” services
We’ve all seen the signs: “Roof Restorations from $1900.” While tempting, these low-cost services are often carried out by unqualified operators.
Many skip essential steps like replacing broken tiles or properly repointing ridge caps. This results in poor workmanship and costly repairs later.
Always hire a licensed roof tiler or qualified roofing contractor to ensure the job is done correctly and meets Australian standards.
Don’t let a small roof problem turn into a costly repair. Get it fixed properly the first time with a professional inspection and protect your home before minor issues become major headaches.