Balcony, Kitchen, Bathroom & Toilet Waterproofing

Water seeping into the unit below, damp skirting outside the bathroom, or planning a renovation? We waterproof toilets, bathrooms, kitchens and balconies, and repair failed waterproofing, often without hacking the tiles.

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  • BCA registered contractorBCA CR13 L2 · CR09 L4 · CR01
  • ISO 9001 certified, quality managementISO 9001 Quality
  • ISO 14001 certified, environmental managementISO 14001 Environment
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Why Wet Areas Need Waterproofing

Toilets, kitchens and balconies are washed down every day, and water that gets past the tiles soaks into the slab. Left alone, it leaks into the unit below, grows mould, and eventually corrodes the steel in the concrete.

Rolling liquid waterproofing onto a floor

Leaking Toilet? Signs the Waterproofing Has Failed

  • A stain or drip on the ceiling of the unit below your bathroom
  • Damp or peeling paint on the wall or skirting just outside the bathroom
  • Tiles that sound hollow when tapped, or grout that stays dark long after a shower
  • A musty smell that stays after cleaning

If the water is coming from the cistern, flush pipe or toilet bowl fittings, that is a plumbing repair rather than waterproofing. We handle minor plumbing work, such as exposing pipes, and engage a licensed plumber when a pipe needs replacing.

Our Waterproofing Services

At our company, we offer waterproofing tailored to the unique needs of your balcony, kitchen, and toilet areas.

Balcony Waterproofing

Our balcony waterproofing services ensure that your outdoor living space is protected from the elements. We utilize high-quality waterproofing membranes and coatings to create a durable barrier against water ingress, preventing potential damage to the concrete slab and reinforcement bars.

Kitchen Waterproofing

Kitchen waterproofing is essential to prevent water seepage from sinks. Our kitchen waterproofing solutions involve applying specialized waterproof coatings to floors and walls, ensuring that your kitchen remains dry and free from moisture-related issues.

Toilet Waterproofing

Bathroom waterproofing is a critical component of maintaining a safe and healthy living space. Our service involves the application of waterproofing membranes and coatings, creating a continuous barrier against water intrusion and protecting your bathroom from mold, mildew, and structural damage.

How Does Our Waterproofing Work?

For Balcony

Our balcony waterproofing process typically involves cleaning and preparing the surface, applying a waterproof membrane or coating, and seamlessly integrating it with the existing structure. This creates a continuous barrier against water penetration, protecting the balcony's concrete slab and reinforcement bars.

For Kitchen

Kitchen waterproofing involves applying a specialized waterproof coating or membrane to the floor and walls, ensuring a seamless and durable barrier against water seepage. This process also includes sealing any joints, cracks, or openings where moisture could potentially enter.

For Toilet

We apply a waterproof membrane across the floor and up the walls, with extra detailing around the floor trap, pipes and shower area. The membrane turns up at least 150mm on the walls. On request, we carry out a water retention test before tiling.

FAQs

Does an HDB balcony need waterproofing?

Yes. HDB requires pre-packed waterproofing screed and a waterproofing membrane on open balconies before new floor finishes are laid, the same as bathrooms and toilets. The rule appears in HDB’s official renovation guidelines because balconies are exposed to rain and drainage water that can seep into the unit below. Skipping it during renovation is a permit violation.

How is kitchen waterproofing different from bathroom waterproofing?

Kitchen waterproofing covers a smaller wet zone around the sink and plumbing penetrations, with the membrane extending 600mm to 1m up the wall behind the sink. Bathroom waterproofing covers the full floor plus walls up to shower height, with extra detailing around floor traps, drains, and toilet flanges. HDB requires a mandatory water retention test for bathrooms but not kitchens.

What causes balcony leaks in Singapore condos?

Balcony leaks in Singapore condos are usually caused by failed sealant at the door threshold between balcony and living room, blocked floor traps that pond water during heavy rain, hairline cracks in the screed under the tiles, broken grout lines, and loose flashing where the slab meets the external wall. Most leaks appear after 5 to 8 years of weather exposure.

Can waterproofing be done without hacking existing tiles?

Yes, non-hacking waterproofing is possible using surface-applied liquid sealers, nano-coatings, or polyurethane (PU) injection through pinholes drilled into the grout. These methods extend lifespan by 3 to 5 years on minor leaks but cannot fix failed screed beneath the tiles. For severely deteriorated waterproofing, hacking down to the slab and reapplying a fresh membrane remains the standard repair.

Is balcony waterproofing required when renovating?

Yes, in HDB flats. Once you remove existing balcony floor finishes during renovation, HDB requires pre-packed waterproofing screed and a fresh waterproofing membrane before new tiles are laid. The membrane must be upturned at least 150mm against walls and door thresholds. Condominium MCSTs enforce similar rules. Skipping this step voids your renovation permit and creates leak liability.

What signs indicate balcony or kitchen waterproofing has failed?

Five signs that balcony or kitchen waterproofing has failed: damp ceiling patches in the unit below, dark water stains around floor traps and door thresholds, loose or hollow-sounding tiles, persistent mould in grout lines that returns after cleaning, and chalky efflorescence on adjacent walls. These typically surface 5 to 10 years after the original waterproofing was applied.

Upgrade Your Home’s Protection with Expert Waterproofing

Prevent water-related issues before they occur by investing in our top-notch waterproofing solutions for your balcony, kitchen, and toilet areas.

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Request a free inspection

No obligation · We reply within 10 to 15 minutes during office hours (Mon to Fri, 8am to 5.30pm)