what are the types of water stop

Water Stop (ووتر ستوب) | Best PVC & UPVC Types from iChem Egypt 2026

What is Water Stop?

Water Stop is a flexible strip made of materials such as PVC, UPVC, Rubber, or Hydrophilic compounds, installed inside concrete joints during casting to prevent water leakage through construction or expansion joints.
It is one of the most effective waterproofing solutions for concrete structures exposed to water pressure, such as water tanks, tunnels, lift stations, and wastewater treatment plants.

Importance of Water Stop in Concrete Structure Protection

Installing a Water Stop is not an optional step — it is essential for preserving the structural integrity of concrete buildings:

• Prevents water from penetrating through concrete joints.

• Protects steel reinforcement from corrosion and rust.

• Extends the lifespan of tanks, tunnels, and sewage stations.

• Reduces future repair and maintenance costs.

• Complies with Egyptian and international waterproofing standards.

✅ Structures where Water Stop must be installed:

• Underground and overhead water tanks

• Sewage treatment and pump stations

• Tunnels and box culverts

• Swimming pools and desalination plants

• Horizontal and vertical concrete joints

Types of Water Stop in Egypt (2026)

1. PVC Water Stop (Most Common Type)

• Flexible, easy to weld, cost-effective

• Resistant to chemicals, water, and high pressure

• Ideal for tanks, tunnels, and water stations

2. UPVC Water Stop

• Stronger and more rigid than PVC

• Higher resistance to heat and cracking

• Used in joints exposed to movement or vibration

3. Rubber Water Stop

• High elasticity and flexibility

• Withstands extreme water pressure

• Suitable for dams, deep tunnels, and power plants

4. Hydrophilic Water Stop

• Expands when in contact with water to seal joints

• Ideal for tight areas or post-casting joints

5. Metal Water Stop

• Made from stainless steel or galvanized steel

• Used in heavy industrial structures and power stations

6. Adhesive Water Stop

• Easy and fast installation

• Suitable for small repairs and maintenance works

IsoFlex PVC Water Stop by iChem Egypt – Latest 2026 Edition

iChem Egypt provides one of the strongest PVC Water Stop products in 2026 under the name IsoFlex PVC Water Stop, approved in major national projects.

✅ Key Advantages vs. Sika & STC:

• European high-quality raw materials

• Excellent flexibility and high water pressure resistance

• Resistant to chemicals, salt, heat, and oils

• Ideal for mega projects and large water tanks

• Competitive price with iChem warranty

Available Profiles (Sections)

IsoFlex PVC Water Stop Sizes – 2026

How to Install Water Stop Properly (According to 2026 Code)

1. Before Concrete Pouring

• Fix the Water Stop at the center of the concrete joint

• Use metal clamps or heat welding for proper connection

2. During Pouring

• Ensure the fins of the Water Stop are fully embedded in concrete

• Pour concrete without voids or honeycombing around the strip

3. After Completion

• Inspect welded joints to ensure no openings

• Perform water leakage test if needed

Tips Before Buying Water Stop in Egypt

• Choose the type based on water pressure and joint type (construction or expansion)

• Ensure the product is original IsoFlex PVC from iChem (not imitation)

• Use professional technicians for welding and installation

• Regularly inspect Water Stop in water-related structures

Where to Buy PVC & UPVC Water Stop in Egypt (2026)

Main Supplier: iChem Egypt
📍 Delivery to all governorates (Cairo – Alexandria – Delta – Upper Egypt)
🛠 On-site welding – technical support – supply services
📞 Contact & Quotations: 01022000050
🌐 Official Website: ichemeg.com

❓ Frequently Asked Questions (FAQ)

✔ What is the best type of Water Stop for water tanks?
PVC or UPVC IsoFlex is ideal for water tanks and treatment plants.

✔ Can Water Stop be installed after concrete casting?
No — it must be installed inside the joint before pouring concrete.

✔ What’s the difference between PVC and UPVC Water Stop?
UPVC is stronger and more heat-resistant, while PVC is more flexible and widely used.

✔ What is the price per meter of Water Stop in Egypt 2026?
Prices vary depending on size and profile — contact iChem for a quotation.