Roll 50-100m, thick 1.2mm
In waterproofing works for underground structures and concrete systems, choosing the right material determines longevity, stability, and long-term waterproofing effectiveness. Many engineers prefer Sika HDPE 1.2mm waterproofing membranes due to their stiffness, mechanical strength, and superior bonding capability with concrete compared to common membrane types.
The Sika HDPE 1.2mm waterproofing membrane is made from virgin HDPE resin with a standard thickness of 1.2mm and is specially designed for concrete applications. The material forms a durable waterproofing layer that mechanically bonds with the concrete poured above it, locking out water, reducing seepage pathways, and preventing reverse seepage from soil or groundwater. The product is developed specifically for concrete environments and is not intended for ponds or waste-treatment structures.
Thanks to its uniform structure and stable quality, the 1.2mm HDPE membrane meets strict waterproofing requirements for basements, foundations, and technical pits in both residential and industrial projects.
The durability and waterproofing performance of the membrane depend directly on its structure and the quality of each material layer.
Virgin HDPE resin provides flexibility, tensile strength, and elongation. UV stabilizers, thermal stabilizers, and antioxidants help the HDPE membrane maintain durability in complex conditions, especially in basements or foundation pits.
A key feature of the Sika HDPE 1.2mm waterproofing membrane is its treated surface, designed to enhance adhesion with freshly poured concrete.
Standard thickness and tolerance
The thickness of the Sika HDPE 1.2mm membrane reaches a stable 1.2mm with consistent tolerance, preventing thin spots and ensuring stronger welds and better puncture resistance.
Key mechanical properties
The HDPE waterproofing membrane meets requirements for tensile strength, tear resistance, puncture resistance, and long-term durability.
The waterproofing performance depends not only on membrane thickness but also on how the HDPE membrane interacts with concrete.
Water-locking mechanism
Concrete bonds tightly to the textured surface of the HDPE waterproofing membrane, forming a secure waterproof barrier.
Preventing reverse seepage
The Sika HDPE membrane prevents water from infiltrating back into the concrete during groundwater fluctuations.
Minimizing water tracking
Tight bonding prevents water from moving through gaps or voids.
The Sika HDPE 1.2mm membrane protects areas in direct contact with soil and groundwater.
The 1.2mm HDPE membrane blocks upward seepage and increases structural lifespan.
The HDPE waterproofing membrane provides absolute protection in groundwater-exposed elevator pits.
Ensures long-term waterproofing performance in technical water tanks and equipment rooms.
The HDPE membrane prevents moisture penetration into concrete floors in high-humidity environments.
Material price 145,000 VND/m²
Genuine Sika HDPE waterproofing membrane, with CO/CQ included.
Includes laying the HDPE membrane, welding, inspection, and final acceptance.
Factors affecting price
Cost optimization
Choosing the right membrane width helps reduce weld lines and optimize installation.
Incorrect welding technique
Improper temperature or movement causes poor weld quality in the HDPE membrane.
Incorrect placement
Misalignment reduces waterproofing performance.
Poor surface preparation
Sharp debris can puncture the HDPE membrane during concrete pouring.
Lack of weld testing
Vacuum or air-pressure tests are required to ensure airtight joints.
Ensures a clean, smooth foundation for the HDPE membrane.
The Sika HDPE membrane must be laid flat and fixed securely.
Specialized welding machines ensure airtight welds for the HDPE waterproofing membrane.
Proper pouring ensures stable long-term adhesion.
Must meet the exact 1.2mm requirement.
Mandatory for certified quality.
A critical requirement for Sika waterproofing membranes.
Ensures both material and workmanship quality.
To conclude, using the Sika HDPE 1.2mm waterproofing membrane protects concrete structures from reverse seepage and groundwater, ensuring long-term durability.
No, it is only for concrete structures.
Not recommended-use specialized equipment.
Yes, but it is optimized for concrete environments.
No, proper base preparation is required.
6m–8m depending on production batch.
