WAI HONG BROTHERS WATERPROOFING & ROOFING SPECIALIST
KLANG VALLEY/SELANGOR/SEREMBAN/PAHANG: +60 11-3680 7118 | JOHOR BAHRU/MELAKA: +60 11-52337778 | PENANG/IPOH/KEDAH: +60 11-36902118
Flat Roof & Slab Leaks: Why Early Action Matters
Unlike pitched roofs, flat roofs and concrete slabs are more prone to water pooling and seepage due to their low gradient and constant exposure to sun and rain. If left untreated, even a small leak can evolve into a major structural issue.
At Wai Hong Brothers, we understand that flat roof and concrete slab leaks are more than just an inconvenience – they are a silent threat to your property’s integrity. Our professional waterproofing services are designed to identify, treat, and prevent water ingress before it leads to costly damage.
Our Waterproofing Solutions
We provide professional-grade waterproofing systems tailored for flat roofs, balconies, and concrete slabs:
- Bituminous Torch-On Membrane – Ideal for exposed slabs and large flat roofs. Offers long-term durability with strong resistance against standing water and heat.
- Polyurethane (PU) Waterproofing – Seamless, elastic membrane that seals cracks and prevents water ingress. Best for complex and irregular surfaces.
- PU Injection Leak Sealing – Targets active leaks inside cracked slabs. PU resin is injected to fill and seal water paths instantly.
- Cementitious Waterproofing – Best used under tiles or screed for slab protection. Suitable for bathrooms, balconies, and kitchen slabs.
A flat roof or concrete slab is a roof that doesn’t slope like a regular roof. Because it’s mostly flat, water can stay on the surface longer after rain. Over time, this water can find small cracks and start leaking into your property. Waterproofing it helps to stop leaks before they cause big problems down the line.
Waterproofing a flat roof involves sealing the surface with special materials that block water from getting through and into your property. These materials are carefully selected depending on the surface type and the condition of the flat roof or slab. Our team at Wai Hong Brothers are no strangers to this exact problem and have the necessary tools to resolve leaking cases such as this. This service is perfect for people with flat roofs, balconies, car porches, and buildings with exposed concrete roofs. It’s also important for commercial buildings and older houses that have started showing signs of water stains, ceiling leaks, or damp patches as there may be areas that have deteriorated with time.
Without proper waterproofing to your flat roof, even a small leak can lead to mold, rotting wood, or rusty steel inside. Fixing that later can be expensive. Waterproofing adds long-term protection, helps your property stay in good shape, and can even help with insurance claims in the future.
If you’ve noticed any leaks, dampness, or strange ceiling stains, it’s a good idea to have the roof checked. It’s easier to fix early signs now than to deal with bigger damage later.