Sika sheet membrane waterproofing systems are high-performance solutions designed to protect basements and below-ground structures exposed to aggressive ground conditions, groundwater and structural stress. Using pre-applied or post-applied fully bonded membranes, these systems provide reliable watertight protection while also safeguarding the concrete structure against harmful natural substances and gases found in soil, groundwater or seawater. Suitable for new build and refurbishment applications, Sika sheet membranes deliver durable, flexible and secure waterproofing for structures that require a completely dry internal environment.
Advantages of Sika Sheet Membrane Systems
- Fully bonded, crack-bridging membrane systems that limit water underflow in the event of damage
- Highly flexible membranes that accommodate structural movement and complex detailing
- Protection of concrete structures against aggressive chemicals, gases and seawater
- Fast and efficient installation with no curing times or primers required
- Suitable for application in low temperature conditions
- Comprehensive range of accessories and detailing solutions for complex structures
- Proven long-term performance backed by decades of experience and extensive testing
SikaProof® Waterproofing Membranes
Fully-bonded membrane systems for watertight basements
Post-applied sheet waterproofing membrane system, specially designed for roof slabs and double-faced formwork cast walls.
Pre- and cold applied sheet waterproofing membrane system for application below base slabs, on single and double-faced formwork cast walls.
The SikaProof® System offers two methods of installation:
SikaProof® A - the "pre-applied" system, which means that the membrane is installed in the formwork before the reinforcement and concrete is placed. The membrane sheets are available in 1.0 and 2.0 wide rolls with a prefabricated self-adhesive strip. That features recude joints and installation time, what makes the installation more efficient,especially on large areas.
SikaProof® P - the "post-applied" system, which means that the membrane system is installed on the hardened/existing concrete structure. SikaProof® P membrane is a self-adhesive peel and stick system that is installed on existing concrete structures. To create a durable and enhanced bond, use SikaProof® Primer-01 onto the prepared concrete surfaces prior to the self-adhesive SikaProof® P membrane being installed.
Our Range of Waterproofing Sheet Membranes
CAD drawings of the SikaProof® A membrane system are free to download as PDFs
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FAQ
Pre-applied membranes, such as SikaProof® A+ 12, are installed before concrete is poured, bonding directly to the concrete as it cures. This method is ideal for new constructions. Post-applied membranes, like SikaProof® P-12, are applied to existing concrete structures, making them suitable for refurbishment projects or when access is limited.
Yes, products like SikaProof® A+ 12 and SikaShield® E80 HDPE SA are designed to resist aggressive substances commonly found in natural ground water and soil, ensuring long-term durability and protection for below-ground structures.
Choosing the correct waterproofing membrane depends on factors like application method, structural requirements, ground conditions and project type. For tailored advice and technical support, we recommend speaking directly with a member of our team here to ensure the most suitable solution for your project.
Each product has a comprehensive Product Data Sheet (PDS) available on our website. This document provides detailed information on surface preparation, application methods and other essential product information to ensure optimal performance.