Roll 50-100m, thick 1.5mm
In modern construction, the demand for a durable, long-lasting, and flexible waterproofing material continues to rise, making the self-adhesive Sika HDPE 1.5mm membrane a standout option. Understanding the nature of this membrane helps investors and contractors make accurate decisions when working with basements, foundations, or structures in direct contact with groundwater.
The self-adhesive Sika HDPE 1.5mm waterproofing membrane is made from a 1.5mm thick high-density polyethylene layer combined with an improved polymer-based self-adhesive layer that bonds directly to concrete surfaces. This self-bonding capability creates a seamless layer that eliminates gaps-the main cause of water ingress in underground areas. It belongs to the pre-applied waterproofing category commonly used in structures with high loads and hydrostatic pressure.
Technically, the 1.5mm HDPE layer provides superior puncture resistance, tolerance to mild chemical environments, and protection from sharp soil particles. Meanwhile, the self-adhesive layer enables the membrane to adhere tightly to structures, making it suitable for foundations, retaining walls, basements, lift pits, and areas with groundwater. The “self-adhesive” function is not meant for manual sticking like tape, but for bonding firmly with freshly poured concrete, forming a monolithic waterproofing layer that does not peel over time.
The high-density polyethylene (HDPE) layer is the most essential component, determining water resistance, puncture resistance, and structural strength. With a thickness of 1.5mm, it provides:
The 1.5mm thickness is considered optimal for civil and industrial structures requiring strong waterproofing performance while maintaining installation flexibility.
This layer gives the membrane its distinguishing properties. When in contact with fresh concrete, the polymer adhesive:
This self-bonding mechanism ensures high performance even under significant groundwater pressure.
In addition to HDPE and adhesive, the material includes a protective film designed to:
This layer enhances durability while protecting the membrane from dust and debris during installation.
The membrane can be applied on:
Each substrate requires a different preparation method but still benefits from the adhesive bonding ability.
The membrane adapts well to:
Typical applications of the self-adhesive Sika HDPE 1.5mm membrane include:
Although often referred to generically as “HDPE membranes,” welded sheets differ completely from self-adhesive membranes. Welded HDPE is only joined at seams, while self-adhesive HDPE bonds across the entire surface to concrete.
“Self-adhesive” does not mean sticking to dry concrete. It bonds to fresh concrete to form a monolithic layer. Installing it on the wrong substrate reduces waterproofing performance.
Some projects use it improperly on exterior walls above ground or roofs, which prevents the material from performing at its best.
This is considered reasonable for a premium, long-lasting waterproofing material. Price differences may occur depending on import timing and order volume.
Includes: membrane installation, substrate preparation, seam treatment, inspection, and acceptance testing.
Installation requires experienced workers to avoid wrinkles or trapped air.
SKSumo supplies genuine Sika products with full CO, CQ, and factory testing. Materials are stored properly, away from heat and UV.
Engineers assist with installation methods, substrate preparation, and on-site supervision to ensure compliance.
Clear warranty terms and product exchange if defects originate from the manufacturer.
In practice, not every location is suitable for the same waterproofing material. Choosing the right self-adhesive Sika HDPE 1.5mm membrane helps stabilize the structure, reduce seepage risks, and optimize long-term maintenance costs.
The self-adhesive Sika HDPE 1.5mm membrane performs best in areas in direct contact with soil or groundwater, including basements, foundation slabs, pile caps, retaining walls, and areas with high hydrostatic pressure.
The 1.5mm thickness is optimal for residential and commercial buildings with medium to high loads. The thick HDPE layer provides better puncture resistance, while the adhesive layer enhances protection under high water pressure.
In areas with moist soil, high groundwater, or frequent backflow seepage, the self-adhesive Sika HDPE 1.5mm membrane offers exceptional performance. It effectively blocks moisture, natural gases, and groundwater intrusion.
A clear understanding of the self-adhesive Sika HDPE 1.5mm waterproofing membrane helps investors and contractors select the right solution for underground structures, especially in complex soil and groundwater environments. This material offers excellent durability, superior waterproofing, and optimized maintenance costs. Proper installation and choosing a reputable distributor like SKSumo ensure long-term performance.
Not mandatory if the surface is clean, flat, and within the acceptable moisture range; old concrete may require priming for better adhesion.
Not recommended, as it is optimized for below-grade applications with concrete poured over it.
It withstands mild and neutral chemicals only; strong chemicals require specialized materials.
If installed correctly and covered with concrete on the same day, the adhesive bond is permanent.
No, basic rollers, cutting tools, and seam tools are sufficient, though skilled workers are necessary.
