Roof Waterproofing Contractor

Premier Roof Waterproofing Services You Can Trust

Is your roof starting to reveal signs of moisture intrusion? Are pesky water stains creeping along its surface?


When leaks and water seepage start to appear on your roof, it’s crucial to address them promptly with effective waterproofing solutions.


Remember, unattended roof leaks can gradually compromise the structural integrity of your property, potentially leading to costly damages and safety hazards.


Secure your roof’s resilience today with Allstar Waterproofing! Our dedication to protecting your property from roof leakages ensures that you can rest easy and enjoy peaceful nights.

Metal Roof Waterproofing

Metal Roof Waterproofing

Tiles Roof Waterproofing

Tiles Roof Waterproofing

Flat Concrete (FC) Roof Waterproofing

Flat Concrete (FC) Roof Waterproofing

Trusted By

Allstar Waterproofing & Services customers

Why Allstar Waterproofing is Your Go-to for Roof Waterproofing Repair Services

all star waterproofing


Discover the hidden problems beneath the roof's surface with our meticulous evaluation process. We delve deep to unearth both visible and underlying issues, ensuring a complete diagnosis of your waterproofing needs—absolutely free of charge.

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Our approach to quotations is built on clarity and integrity. We engage in detailed discussions to guide you through every step, ensuring you understand the full scope of the work required. With us, you won't have to worry about any hidden costs.



Allstar Waterproofing brings 20+ years of unwavering commitment and expertise to every project. With over 3000 clients served across residential, commercial and industrial properties, our legacy is built on consistent, professional solutions tailored to every project.

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We're in the business of building relationships as solid as our repairs. Our client-first philosophy means we're dedicated to honouring your trust, prioritising your needs, and delivering beyond your expectations every time.

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We pledge nothing less than top-notch workmanship and lasting waterproofing solutions. Our stringent quality standards, combined with the use of premium materials and skilled professionals, ensure that our solutions are not just temporary fixes but long-term protections for your property.

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Rest easy knowing that a solid 1-year warranty backs our commitment to quality repair work.

Want even more security? You can talk to us about extended warranty options—because your peace of mind is our priority.

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What is Roof Waterproofing?

Roof waterproofing is the process of treating the roof surface to make the roof system resistant to water passage under hydrostatic pressure.


This treatment protects the structure and envelops building surfaces with a waterproofing membrane and coating to shield structures and objects effectively.


As a shield against weather changes, proper roof waterproofing prevents any form of water leakage from entering the living spaces below, preserving the overall health and structure of the structure.

Types of Roofs and Their Common Issues

Metal Roof

Openings in Penetration Roof Flashing and Capping

Metal roofs are prone to expansion and contraction. These panel movements lead to the deterioration of roof flashings and capping and, consequently, water penetration.


Metal Roof Oxidation

The protective surface on metal roofs wears away over time, exposing the metal panels to oxidation. This process can result in structural failure.


Fasteners Backing Out

In thundery tropical conditions, fasteners may gradually back out of their positions, potentially allowing water penetration.


Water Ponding at Metal Roof Gutters

Rainwater remaining on a roof for 48 hours constitutes “ponding water,” compromising roof performance. Uneven surfaces, incorrect gradients, dirt, debris, or root penetrations often cause ponding water.

Metal Roof Repair by Allstar Waterproofing & Services

Pitched and Tiled Roof

Tile Roof Waterproofing by Allstar Waterproofing & Services

Cracked or Broken Roof Tiles

If you notice cracks or broken tiles on your tiled roofs, address them promptly. Leaving these issues unattended can lead to potential leaks into your ceiling.


Damaged Roof Ridges

Roof ridges may suffer from cracks, damage, looseness, or even be completely missing, increasing the risk of leaks.


Wear & Tear of Tile Roof Flashing and Capping

The movement of expansion and contraction creates stress, resulting in wear and tear of the joints in roof flashing and capping. These wear and tear can consequently lead to leaks.


Water Ponding at Tile Roof Valleys and Gutters

Accumulated debris in roof valleys and gutters can cause water overflow issues, leading to ponding and potential problems.

Flat Concrete

Hairline Cracks on Flat Roof and Wall

Hairline cracks on flat roofs and walls may result from factors such as settling, temperature fluctuations, poor construction or materials, water damage, ageing, structural movement and improper foundation support.


Structure Damage

The structure of the roof and wall may exhibit cracks, damage, or looseness, or it could be missing altogether, leading to leaks.

Flat Roof Joints Area with Openings

Expansion and contraction movements induce stress, resulting in wear and tear of the flat roof joint area, which then ultimately leads to leaks.


Water Ponding Caused by the Debris in Flat Roof Gutters

The buildup of debris in flat roof gutters can cause water overflow problems, leading to ponding and other potential issues.

Concrete Roof Repair by Allstar Waterproofing & Services

The Allstar Promise: Precision Repairs Tailored to Your Needs

Embrace the Allstar Waterproofing difference, where our unwavering precision in waterproofing ensures only the correct techniques and waterproofing materials will be used for the specific problem at hand.


Whether you have flat, gabled, or sloped roofs of various roofing materials such as metal, concrete or concrete clay-tiled roofs, you can trust us to deliver!


Here are some of the proper waterproofing membranes and roof tile coating methods we use to waterproof your roof:

Polyurethane Liquid Membrane (PU)

Liquid Applied Waterproofing Membrane

Liquid-applied membrane is a simple, easy and versatile method for waterproofing, applicable to any membrane with a liquid base. In Singapore, commonly used materials include single-component acrylic-based, polyurethane (PU) based, or hybrid formulations.

With enhanced durability and suitability for foot traffic, it has proven to be a reliable, economical, and environmentally friendly solution that is ideal for all types of flat roof areas.

bituminous membrane

Torch Applied Waterproofing Membrane

The Torch Applied Membrane, only known as APP membrane (Atactic Polypropylene membrane), is prefabricated modified bituminous waterproofing sheet membrane.

This remarkable membrane boasts a robust composition, blending polymers and bitumen to form a resilient layer that acts as a strong barrier against moisture and dampness.

Due to its inherent strength, the torch-on membrane effectively prevents the accumulation of water on specific areas of a surface, ensuring effective protection against the perils of pooling water.

thermal insulation

Solar Reflective Thermal Insulation Coating

The Solar Reflective Thermal Insulation Coating shields against solar radiation by reflecting off intense solar rays.

This heat protection, in turn, minimises the absorption of heat energy by roofs and walls and makes for a cooler environment within buildings.

Its 2-in-1 functionality makes it an excellent “Cool Roof” solution suitable for a range of structures, including landed houses, commercial buildings, industrial factories, and residential buildings.

4 Easy Steps to Get Your Concrete Repairs

Step 1: WhatsApp Us for Your Free Consultation

Begin by sending a message to us via WhatsApp to kickstart your free consultation. One of our specialists will promptly get in touch to learn more about your roof problems and schedule an on-site inspection.

Step 2: On-Site Inspection and No-obligation Quotation

Our team will visit your property to evaluate the roof’s condition and discuss tailored solutions. You’ll receive an on-the-spot quotation for straightforward cases or a detailed proposal within 1-3 working days for more complex repairs.

Step 3: Payment and Scheduling

Upon settling the deposit, we’ll pinpoint the perfect timeline to commence repairs and waterproofing. The completion of repair works may range from weeks to months, tailored to the project’s demands, scale and complexity.

Step 4: Begin Work!

Finally, we can roll up our sleeves and begin the transformation. Our repairs are backed by a 1-year warranty, with the opportunity to explore extended warranty options – just have a chat with our team!

Hear what our happy clients have to say!

Client Testimonials

Your Safety is Our Priority

bizsafe 3 award for Allstar Waterproofing & Services
BCA logo for Allstar Waterproofing & Services
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SCA logo for Allstar Waterproofing & Services

At Allstar Waterproofing, your safety is the cornerstone of our services. We are not just experts in roof waterproofing; we are certified guardians of your property’s integrity.

Our esteemed credentials, including certification from the Building and Construction Authority (BCA), bizSAFE3, and membership with the Singapore Contractors Association, are testaments to our unwavering commitment to upholding the highest safety and quality standards.

Our Previous Works

Our Roof Waterproofing Experts in Action

Fortify Your Roof's Resilience and Protect Your Property with Allstar Waterproofing!

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