Stopleaks. Waterproofing supplier and contractor in Batam
Mapei and Bondall materials, plus the crew that installs them. Roof slabs, bathrooms, pools, water tanks and basements in Batam.
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Water always finds a way.
High rainfall, sea air and concrete that moves. Leaks rarely have one cause, so the fix is rarely one product.
Leaking roof slab
Hairline cracks, joints and gutters. Water gets in during heavy rain and drips far from where it entered.
Damp walls
Bubbling paint, mould, crumbling plaster. Usually capillary rise or soil pressing against the wall.
Bathroom seepage
Stains on the ceiling below. The layer under the tiles is missing, or broken at corners and pipes.
Water pressure
Basements, water tanks and septic tanks hold back water from the opposite side. They need a system that resists negative pressure.
Layer by layer.
Scroll slowly. The model is built exactly the way our crew works on site, from cracked concrete to the flood test.
- 01 / 06
Survey
We find where the water is really coming from, check cracks and the condition of the concrete, then measure the area.
- 02 / 06
Preparation
Loose old coatings are stripped, the surface is cleaned, and cracks are opened up and patched.
- 03 / 06
Primer
Primer bonds the membrane to the concrete and seals the surface pores.
- 04 / 06
Corner detailing
Corners, joints and pipe penetrations get tape or mesh. This is where most leaks start.
- 05 / 06
Membrane
Two coats applied crosswise until the thickness matches the technical data sheet.
- 06 / 06
Flood test
The area is flooded and checked from below before tiles or screed go on. Dry underneath, then we hand over.
Where is the leak?
Tap a point on the 3D house or pick an area. We show the system and materials we usually use. The final spec is set after a site survey.
Roof slabs & roofs
Roof slabs go through heat and rain in turn, so the membrane must stay elastic and UV-resistant. Cracks and corners are treated before coating.
- Clean and remove loose old coatings
- Patch cracks and round off corners
- Mapeband at corners and pipes
- Primer, then two crosswise membrane coats
- Flood test
Materials we use ourselves.
What we sell is what we apply on our own projects. Spin the shelf, pick a product, then ask about stock and price.
Mapelastic
Two-component flexible cementitious membraneA waterproof layer that moves with the concrete. The standard choice for bathrooms, balconies, terraces and swimming pools before tiling.
- Components
- 2 (powder + liquid)
- Areas
- Bathrooms, balconies, pools
- Application
- Trowel / brush
- Packaging
- 32 kg kit: 24 kg bag + 8 kg can
Specs are summarised. Always follow the manufacturer's technical data sheet (TDS) for mixing, thickness and drying time. Pack sizes are the manufacturer's; store stock may vary. The 3D model shows the packaging type, not the actual design.
We install it too.
Good materials fail if the surface isn't prepared. The Waterstop crew handles the work from survey to flood test.
Survey & diagnosis
We check the water source, the concrete and any cracks, then give a recommended system and a written quote.
Membrane application
Waterproofing for roof slabs, balconies, bathrooms, pools, water tanks and basements with Mapei or Bondall systems.
Crack repair
Treatment of minor cracks, corners, joints and pipe penetrations before coating.
Projects & contractors
Material supply and installation for shophouses, homes and construction projects. Materials only or a full contract.
Run by a civil engineer trained at NTU Singapore.
The store and its projects are led by a civil engineer, so every leak diagnosis starts from how concrete and structures behave, not just from which product to sell.
- Degree
- Bachelor of Engineering (B.E.)
- Major
- Civil & Environmental Engineering
- University
- Nanyang Technological University, Singapore
- Years
- 1998 – 2002
See the work.
Photos from our own projects, from preparation to the final coat. The full archive is on Facebook.
From one pail to a whole building.
Drop by for two pails or have us handle the whole project. We do both.
Tradespeople & applicators
Need the right material and mixing advice before heading to site.
See products →Frequently asked.
Can I buy materials without the installation?
Yes. Visit the store at Ruko Accelence, Batam Centre, or order via WhatsApp. We help you choose products and calculate quantities from the area size.
How do I know which product is right?
It depends on the area, the direction of water pressure, and whether the surface will be tiled or exposed to the sun. Send photos and the area size, or ask for a survey.
Why is a flood test needed?
A flood test confirms the layer is truly watertight before tiles or screed cover it. Tearing up tiles costs far more than waiting one day.
Is the work guaranteed?
Guarantee terms depend on the type of work and the system used. Ask when you get the quote so it's written down clearly.
