Sheet membrane systems are reliable and durable thermoplastic waterproofing solutions that can fulfill the requirements of even the most demanding below-ground structures, including those exposed to highly aggressive ground conditions and stress.

Sheet membrane systems are a popular choice, as they are designed to withstand exposure and stress extremes such as:

High level of water pressure
Aggressive groundwater containing chemicals (sulfates and chlorides in solution)
Unequal static forces due to settlements or uplift
Dynamic forces due to earthquakes

   Construction workers applying a below-grade waterproofing membrane

Sika’s Sheet Membrane Systems Have Many Advantages

  • We provide accessories and special detailing solutions down to very complex details.
  • Our systems are either compartmentalized, active-controlled or fully-bonded, which limits water underflow in case of local leaks due to damage / perforated membrane during or after construction work.
  • Resistant to many chemicals, our sheet membrane systems ensure high protection to the concrete, against aggressive gases or even groundwater with seawater.
  • Water tightness of the entire system before concreting and backfilling is guaranteed thanks to high quality control on site with double-welded seams. Testing is possible with compressed air, vacuums and electronic detectors.
  • Very high flexibility of sheet membranes allow easy installation and completion of details that results in faster membrane installation.
  • Fast application is possible even at low temperatures, as our solutions do not require any curing/waiting times nor primers.
  • Long-term track record with over 45 years of experience and extensive test reports confirm high performance, security and reliability of Sika membrane waterproofing systems, which ensures a very long service life of the waterproofed basement or below-grade structure.
  • Sikaplan® PVC and TPO highly flexible sheet membrane systems protect any concrete structure - can be built as standard single layer compartment systems up to the active control system to meet the highest demands.
  • SikaProof®, a fully-bonded TPO membrane system, offers customers high waterproofing safety and installation efficiency and is typically used for basements or below-grade areas.
  • SikaBit® bituminous modified sheet membranes, either applied with torch-on or self-adhered methods, provides a cost-efficient solution for basements and below-grade structures.

Best Sheet Membrane Products For Tunnel and Basement Waterproofing

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