Aluminium composite roofing is one of the most reliable and widely used roofing solutions across Singapore, valued for its durability, lightweight structure, and resistance to harsh weather conditions.
However, even well-installed roofs can develop issues over time, particularly when subjected to Singapore’s intense heat, heavy rainfall, and high humidity throughout the year.
If your aluminium composite roof has started leaking or producing unusual noise during rain, understanding the root cause is essential before any repair work begins.
A Quick Look at Aluminium Composite Panels
Aluminium composite panels are produced by sandwiching a soft core material, typically a plastic with a high absorbent nature, between two aluminium sheets. This design offers the panel with the perfect blend of flexibility and structural strength to make it lightweight but durable to external elements.
Both ways, the aluminum coating serves as protection from weather, UV rays, and physical harm.
SG Sunshade Guru Pte Ltd is a reputable awning contractor and supplier in Singapore that installs aluminum composite panel roofs in various building structures. The company’s panels are coated with PVDF coating and can be used to cover buildings, awnings, car porches, shelters, and walkways.
With built-in properties such as weather resistance, UV resistance, thermal insulation, sound reduction, a properly installed ACP roof is built to serve for many years with basic upkeep.
Reasons Your Aluminium Composite Roof Is Leaking
If water is getting through, one of these is usually the cause:
1. Worn-Out or Cracked Sealant at the Joints
The panels themselves rarely crack. What gives way first is the sealant used at the edges and joints where two panels meet. Over time, silicone and sealant materials dry out, shrink, or crack. Once that happens, rainwater has a direct path inside.
This is one of the most common issues and also one of the simpler ones to fix. A professional can remove the old sealant and apply a fresh weatherproof layer along all the joints and edges.
2. Water Not Draining Properly
If your roof is too flat, rainwater sits on top instead of flowing off. Stagnant water finds its way through the smallest gaps over time. It also adds unnecessary weight to the structure.
The roof requires a suitable slope to facilitate water runoff from it. In case there is no suitable slope, then the contractor might consider incorporating drainage channels or altering the positioning of the panels.
3. Loose Fasteners or Panels That Have Moved
The solar panel must be screwed onto the roof by the use of screws. This is because after some time and exposure to various climatic conditions, such as hot weather and rain, the screws may begin to loosen up, hence causing the movement of the solar panels.
This can be avoided through frequent inspection of the screws.
4. Physical Damage to the Panel Surface
A heavy branch falling on the roof, a hard impact, or just years of wear can create cracks or dents in the panel surface. Once the surface is compromised, water gets in through those spots.
Small cracks can sometimes be patched temporarily, but a damaged panel is best replaced. Aluminium composite panels can be fabricated to fit different shapes and sizes, so getting a replacement panel cut to the right dimensions is not complicated.
5. Debris Blocking Drainage Points
Leaves, dirt, and dust collect on any roof over time. When they block gutters or drainage openings, water has nowhere to go. It backs up and finds the nearest weak point.
Cleaning your roof and checking that drainage points are clear is one of the easiest ways to avoid leaks. Regular cleaning is what keeps aluminium composite panels working longer and more effectively.
Reasons Your Aluminium Composite Roof Is Making Noise
Noise during rain is a different kind of problem, but it is just as common. Here is what typically causes it:
1. No Proper Sound Reduction in the Panel
Not all panels are built the same. A proper aluminium composite panel has properties that reduce metallic clanging and absorb sound. If a basic or low-quality single-layer metal sheet was used instead of a genuine ACP panel, the noise during rain will always be much louder.
SG Sunshade Guru Pte Ltd’s aluminium composite panels include sound-proofing and reduction in metallic clanging as part of their built-in features. If your roof is excessively noisy, it is worth checking whether genuine composite panels were used during installation.
2. Panels That Are Not Secured Tightly
Loose panels rattle. When fixings come undone and the panel has some movement, every gust of wind or heavy rainfall makes it shake against the frame. This creates a banging or flapping sound.
Going around and tightening all screws and fixings often solves this immediately. If a panel keeps moving after that, it may need to be reinstalled.
3. Thermal Movement of the Aluminium
Aluminium is responsive to changes in temperature, expanding with heat and contracting with cooling temperatures. In Singapore, where one may experience a sunny afternoon becoming a cold and rainy night in no time at all, this process takes place frequently. This is because of the squeaking or soft cracking noise.
This is quite expected in certain measures. However, if this is a constant and loud noise, it most likely indicates improper installation of the panels without any allowance for such movements. Proper installation considers the expansion space.
4. Water Trapped Inside the Roof Frame
If the structure underneath the panels has hollow sections, water sometimes gets inside and sits there. When the wind blows or rain hits, that trapped water moves around and creates gurgling or knocking sounds that seem to come from within the roof.
Checking that all drainage holes in the frame are open and free from blockage usually solves this.
Signs You Need a Professional to Take a Look
Maintenance works such as gutter cleaning and fixing loose screws do not need professional intervention. However, there are some cases when having a roofing specialist become involved is the best decision:
- Water leakage happens consistently despite looking for visible openings.
- Some roof panels appear cracked, bent, and/or damaged.
- The roof shows signs of sagging and unevenness.
- A new noise has appeared without any understandable cause.
- It is hard for you to pinpoint the source of leakage.
Improper attempts at addressing the roof structure without the necessary qualifications can make your situation worse. You would better consult with an expert and understand the condition of your roof.
Get Professional Help from SG Sunshade Guru Pte Ltd
SG Sunshade Guru Pte Ltd has been helping homeowners and businesses across Singapore with roofing installation and repair for many years.
They offer aluminium composite panel roofing for buildings, awnings, vehicle porches, shelters and pathway coverings with panels that are sturdy, lightweight, weather-resistant and adjustable to meet varied forms and sizes.
Their team will listen to your individual needs, diagnose the situation carefully and propose a solution that will suit your home and budget.
Whether it’s a repair, replacement panel or a full new installation, they do it with an eye on quality and long-term performance.
Wrapping Up
An aluminium composite roof is a solid, long-lasting choice for any property. Most problems, whether leaking or noise, come from installation gaps, natural wear, or lack of regular maintenance.
None of these issues is impossible to fix, but catching them early makes the job much easier and cheaper.
If something about your roof has been bothering you for a while, it is worth getting it looked at sooner rather than later. Contact SG Sunshade Guru Pte Ltd for professional help and get your aluminium composite fixed hassle-free.
