Terrace Waterproofing

The terrace is one of the most exposed parts of any building, constantly facing heavy rain, heat, and weather changes. Without proper waterproofing, issues such as water stagnation, cracks, poor drainage, and damaged joints can lead to serious seepage and structural deterioration. Even small defects like improper slope, inadequate outlets, parapet wall corners, roof installations, or open electrical conduits can allow water to penetrate the slab.

Our terrace waterproofing solutions begin with a detailed inspection to identify all weak points, including cracks, joints, slope defects, and service penetrations.

Using advanced waterproofing systems, polyurethane sealants, joint tapes, polymer treatments, and protective coatings, we provide long-lasting protection with up to 10 years of performance. Our goal is to ensure zero water stagnation, zero seepage, and complete structural safety for your building.

Improper Slope

A terrace should ideally maintain a minimum slope of 1:100 to allow proper drainage of rainwater. Unfortunately, many terraces lack this essential gradient, which is a common construction defect. When the slope is inadequate, rainwater tends to accumulate and remain stagnant, eventually leading to seepage problems and slab damage. While correcting the slope structurally can sometimes be costly and difficult, modern waterproofing technologies provide effective alternatives. Advanced waterproofing systems can safeguard areas prone to water stagnation and prevent seepage without the need for major reconstruction.

Inadequate Or Improper Outlets

Building standards clearly specify the required number and size of drain outlets based on the terrace area. When these guidelines are not properly followed, issues begin to arise. If the drains are too few, undersized, or poorly positioned, rainwater cannot flow out efficiently. As a result, water remains on the terrace for extended periods, increasing the risk of seepage as it slowly penetrates through the roof slab.

Cracks And Gaps

Continuous exposure to sun, rain, and temperature changes can gradually weaken even strong concrete surfaces. Over time, small cracks begin to form and expand, compromising the durability of the terrace. Roof joints may also develop separations or gaps, creating easy pathways for water to penetrate the slab. Our waterproofing specialists conduct a thorough inspection of the terrace to identify these vulnerabilities. Based on the condition of the surface, we implement the appropriate treatment to seal cracks, secure joints, and prevent further water seepage.

Parapet Walls

Ninety degree corners increase the risk of water stagnation and parapet walls are most vulnerable. Good construction practices demand the presence of angle fillets to prevent water stagnation around the corners. In case they are absent or are improperly constructed, angle fillets can be recreated or technologically improved products like joint tapes and corner tapes can be used to prevent water seepage.

Installations On The Roof

It is common practice to install dish antennas, solar water heaters, and split AC outdoor units directly on the terrace without providing proper upstands. In many cases, the areas around the drilled holes are not sealed correctly, creating entry points for rainwater. Even when these installations are later removed, the leftover holes often remain untreated, allowing water to seep into the slab. To prevent this, we seal all such penetrations using high-quality polyurethane sealants and triple-expansion PU foams. This ensures complete closure of gaps and long-term protection against water ingress.

Electrical Conduits

Open electrical conduits on terraces are a common sight in many buildings, and they often become direct entry points for rainwater. Once water enters through these conduits, it can travel along the pipe routes into different parts of the structure, causing internal damage and posing serious safety risks to occupants. As part of our terrace waterproofing process, we carefully inspect and seal these conduit openings using appropriate waterproofing methods. This prevents water intrusion, protects the building’s internal systems, and ensures overall structural and electrical safety.

Core Features

Our terrace waterproofing services are designed to provide complete protection for the mother slab by addressing every possible point of water entry. We apply advanced waterproof coating systems and high-performance membranes that prevent rainwater penetration and extend the life of the structure. Through detailed slope and drainage assessment, we identify water stagnation issues and provide effective solutions to ensure proper water flow.