Flat Roof Waterproofing Singapore

Professional Waterproofing for RC & Commercial Rooftops

Flat roofs in Singapore face intense sun exposure, heavy rainstorms and frequent temperature shifts. Without a proper waterproofing system, water will eventually penetrate hairline cracks, joints and construction details.

At Flux Solutions, we specialise in flat roof waterproofing for reinforced concrete (RC) roofs, commercial buildings, industrial facilities and landed properties. Our systems are designed to prevent leaks before they start, extend roof lifespan and reduce long term maintenance costs.

Why Flat Roofs in Singapore Commonly Leak

Unlike sloped roofs, flat roofs:

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Develop micro cracks in concrete over time

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Have multiple penetrations such as pipes, drains and equipment bases

Over time, this leads to:

Ceiling stains and peeling paint

Concrete spalling

Corrosion of reinforcement bars

Mould growth and indoor air quality issues

Structural deterioration

Waterproofing is not just a surface coating. It is a complete protection system.

Our Flat Roof Waterproofing Systems

We assess your roof condition, substrate type and usage requirements before recommending the appropriate system.

1. Torch-On Bituminous Membrane (RC Flat Roof)

Best for:

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Large commercial rooftops

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Industrial buildings

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Low-slope concrete roofs

This system uses modified bitumen membranes reinforced with polyester or fiberglass. The membrane is heat-torched onto the substrate, forming a continuous waterproof barrier.

Key benefits:

Excellent UV and heat resistance

High elongation to accommodate structural movement

Strong puncture resistance

Long service life

Suitable for exposed rooftop areas

Professional installation is critical to ensure proper lap sealing and joint bonding.

2. Liquid Applied Polyurethane Membrane (Seamless System)

Best for:

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Complex roof layouts

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Roofs with many penetrations

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Refurbishment projects

This system is applied using roller, brush or spray, forming a seamless waterproof membrane with no joints.

Key benefits:

Seamless, joint-free waterproofing

High elasticity for crack bridging

Excellent adhesion to concrete

Ideal for irregular surfaces

Fast application time

Reinforcement fabric can be embedded in stress-prone areas to increase durability.

Our Waterproofing Process

A proper system is not just about materials. It is about preparation and detailing.

Step 1: Roof Inspection

  • Identify existing leaks
  • Check for ponding areas
  • Assess substrate condition
  • Evaluate previous waterproofing layers

Step 2: Hacking & Substrate Preparation

  • Cleaning and removal of loose particles
  • Repair of cracks and damaged concrete
  • Grinding and leveling if required

Step 3: Primer Application

Enhances adhesion and seals substrate porosity.

Step 4: Detail Treatment

Special attention to:

  • Pipe penetrations
  • Parapet walls
  • Drain outlets
  • Expansion joints

These areas are the most common failure points.

Step 5: Membrane Installation

Application of the selected waterproofing system according to manufacturer specifications and thickness requirements.

Step 6: Final Inspection & Quality Check

Ensuring uniform coverage, proper adhesion and correct finishing.

Benefits of Professional Flat Roof Waterproofing

  • Extends roof lifespan significantly
  • Reduces costly reactive repairs
  • Prevents interior damage
  • Improves thermal performance
  • Protects structural integrity
  • Increases property value

Replacing a roof is expensive. Waterproofing is a smarter preventive investment.

Suitable For

Flux Solutions provides flat roof waterproofing for:

  • Commercial buildings
  • Industrial facilities
  • Condominiums
  • Strata properties
  • Landed houses
  • Shopping malls
  • Schools and institutions

We tailor the system based on building usage and exposure level.

Why Choose Flux Solutions

Experienced waterproofing specialists

System-based approach, not patchwork repair

Use of certified materials

Clear scope and method statements

Proper detailing at critical junctions

Long term performance focus

We do not just fix visible leaks. We solve the root cause.

Frequently Asked Questions

Depending on the system and maintenance, typically 10 to 20+ years.

In some cases, yes. A proper inspection is required to assess adhesion and substrate condition.

Most projects can be completed with minimal disruption to building operations.

Get a Professional Roof Assessment

If you are experiencing water seepage or planning preventive waterproofing, contact Flux Solutions for a site assessment.

Protect your building before minor cracks turn into major structural issues.

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