Concrete flat roofs are widely used across commercial buildings, factories, condominiums, and industrial facilities in Malaysia. While practical and durable, flat concrete roofs are highly exposed to standing water, heavy rainfall, UV heat, and constant thermal movement.
Without a proper waterproofing system, water slowly penetrates the concrete slab, leading to leakage, ceiling damage, coating failure, mould growth, and expensive structural repairs.
Torch-On Membrane Waterproofing is one of the most proven waterproofing solutions for concrete flat roofs because it creates a thick, fully bonded waterproof barrier designed for long-term exposure to tropical weather.
Torch-on membrane waterproofing is a waterproofing method that uses modified bitumen membrane sheets applied directly onto prepared concrete surfaces using controlled heat bonding.
The heat activates the membrane layer and fuses it to the roof surface to create a continuous waterproof barrier.
Unlike standard waterproof coatings that rely only on surface adhesion, torch-on systems form a stronger and more durable protective layer.
Common applications include:
Concrete flat roofs
Commercial rooftops
Factory roof slabs
Podium decks
Balconies
Car porch roofs
Industrial buildings
Flat roofs naturally retain water longer than pitched roofs. A high-performance waterproof membrane reduces the risk of water seepage during prolonged rain exposure.
Roof surfaces in Malaysia experience continuous sunlight and temperature changes. Quality membrane systems are designed to withstand thermal expansion and prolonged UV exposure.
Water accumulation is one of the main causes of concrete roof deterioration. Torch-applied membranes provide thicker waterproof protection compared with many conventional coatings.
When installed correctly with proper surface preparation and maintenance, torch-on membrane systems are commonly selected for long-term roof protection projects.
Evaluate existing roof condition, cracks, ponding areas, and previous waterproofing failure.
Clean and prepare concrete substrate to ensure strong membrane adhesion.
Apply bonding primer for improved membrane performance.
Heat-fuse waterproof membrane onto the roof surface with controlled overlapping.
Seal joints and critical details to eliminate weak points.
Perform final inspection and testing before completion.
Water stains on ceiling
Roof leakage after rain
Cracked roof surface
Bubbling or peeling coating
Ponding water that remains for hours
Damp smell or mould indoors
Successful waterproofing depends on more than materials.
Correct surface preparation, proper overlap, edge detailing, drainage planning, and workmanship directly affect waterproofing lifespan and performance. Professional installation reduces the risk of premature failure and recurring leakage.
Service life varies depending on membrane type, exposure conditions, installation quality, and maintenance, but it is commonly selected as a long-term waterproofing solution.
Yes. It is commonly used for concrete roof slabs, terraces, balconies, and car porch roofs.
Site assessment is required. Some projects require removal of failed layers before installation.
Waterproofing protects against seepage, but drainage improvement may still be necessary for long-term roof health.
Stop roof leaks before they become structural damage.
Get a professional site assessment for your concrete flat roof and receive the right waterproofing solution for long-term protection.
Malaysia