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Waterproofing Solutions to Water Leakage at Car Porch

Car porch slab leaks are a prevalent issue in landed homes and high-rises, often ranking among top maintenance complaints due to surface cracks, worn waterproofing, poor joint sealing, and drainage flaws amid frequent heavy rains. Inadequate roof overhang, improper drainage slope, blocked downpipes, or gaps at column bases leading to spalling, mold, and structural decay. If left untreated, these problems can lead to surface delamination, structural deterioration, and fungal or mould growth.

Proven Expertise in Car Porch Waterproofing

We focus on understanding the problem and conducting a thorough investigation to identify the true source of the car porch leakage, including assessing surface conditions, drainage flow, and any failures in the existing waterproofing system.

Using the ARCHTECH waterproofing solution, we were able to restore full waterproofing integrity, eliminate seepage, and deliver a durable, long-lasting result for the car porch structure.

Signs & Causes of Car Porch Slab Leaks

Water from bathrooms, planter boxes, or balconies above can easily seep down into the porch below, causing brown or yellow stains. Furthermore, cracks in the car porch floor provide a pathway for water to become trapped and spread, eventually lead to persistent leaks

When moisture becomes trapped beneath the paint, it leads to bubbling and peeling. These signs of discoloration are clear indicators that water has penetrated the concrete slab of your porch, balcony, or flat roof.

The prolonged neglect of leaks leads to the growth of black mould and algae. Beyond damaging the building's aesthetic, this organic growth can eventually trigger serious structural decay.

How We Detect and Repair Car Porch Water Leaks

Common car porch leaks often originate from seepage in balconies, flat roofs, or exterior walls. Our proven repair process identifies the root cause and implements lasting solutions to keep your porch dry and stain-free.
  • 1

    Inspect The Root Cause of The Leakage

    Our specialists diagnose roof leaks and propose the best waterproofing solutions. By using thermal imaging, we accurately pinpoint the exact source of seepage for a precise repair.
  • 2

    Preparation & Repair

    Our process begins with a thorough power wash to remove debris and failing waterproofing, followed by repairing all cracks and cavities to create a smooth, stable surface that is properly sloped toward drains to prevent water pooling.
  • 3

    Apply Primer

    For our polyurethane membrane system, we apply a specialized primer that penetrates the porous concrete slab to create a superior bond, ensuring the waterproofing remains durable and resistant to peeling over time.
  • 4

    Application of ARCHTECH Waterproofing Solution

    Multiple waterproofing layers are applied to protect your area from leaks for years. Completion usually takes just 1 day depending on the size of the area.

The solution leaves your area fully sealed and dry, providing lasting protection against leaks and daily moisture.

Our Waterproofing Solutions for Every Corner of Your Property

Our approach to car porch leaks emphasises selecting the right materials, applying expert techniques, and implementing solutions tailored to each porch’s structure. This ensures reliable, long-lasting waterproofing that protects your porch from water damage and keeps it safe and functional for years.

In-House Specialist Expertise

We rely on our own certified experts for precise diagnosis and uncompromising quality workmanship, ensuring permanent repairs.

Comprehensive Leak Resolution

We have complete solutions to solve all types of water leakage affecting your car porch or carpark areas across industrial, commercial, and residential buildings. 


Unmatched System Versatility

We master all waterproofing methods or systems and ensure using the right approach for your structure, guaranteeing longer lasting solutions preventing leakage at car porch.  


Comprehensive 3-years Warranty for a Piece of Mind​

Our long-term warranty covers all flat roof waterproofing work, giving you confidence in durability and reliability of ARCHTECH’s leak-proof solution.

Our Past Projects

ARCHTECH Waterproofing has been trusted across nation wide, from hospitality developments and government facilities to large-scale engineering works and premium residential properties. Our solutions are engineered for long-term performance, backed by technical expertise at every stage of the project.

Torch-On Membrane
Waterproofing for The Mines Resort City Flat Roof
January 2, 2026•
Torch-On Membrane
Waterproofing for Sime Darby Flat Roof
November 12, 2025•
Clear Coating
Waterproofing Bathroom in Cyberjaya
November 12, 2025•
Clear Coating
Waterproofing for Toilet
November 12, 2025•

Can’t Describe the Leak? Just Show Us.

Send us a photo or video of the leak.

Whatsapp Us

Need Expert Help With Car Porch Waterproofing?

Tell us what you’re facing, whether it’s a leak, damp smell, mould stain or bubbling paint. You can also upload a photo for faster assessment. Our team will review your case and get back to you with a personalised solution and quotation.

Explore Our Comprehensive Range of Waterproofing Solutions for Other Areas

Discover how we protect every area of your property.

Balcony
Exterior Wall
Metal Roof
HOW CAN WE ASSIST?

Frequently Asked Questions

Leaks in your car porch are often caused by water seeping from the balcony or flat roof above. The solution usually involves fixing the root cause, like filling cracks, correcting slopes, or repairing grout. Let Archtech’s professionals inspect and recommend the right fix for your porch leak.

To find the source of a car porch water leak, start with a thorough inspection by tracing visible signs back to their origin. Leaks often stem from the area directly above, such as a balcony or upper floor. 


Yes. Our waterproofing solutions are completely non-invasive. Using advanced coatings and membrane technologies, we seal leaks effectively without major demolition. The process is clean, fast, and long-lasting, making it ideal for car porches where minimal disruption is essential 


You can prevent future leaks by maintaining proper slope, keeping your gutters and downpipes clear, and scheduling inspections every 3 years to catch issues early.