Explore Our Protection and Waterproofing Solutions for Parking Decks
SOPREMA offers several waterproofing solutions for parking decks, including liquid membranes (polyurethane and PMMA) and modified bituminous membranes (SBS) designed to protect concrete surfaces against chemicals and mechanical shock, while providing an aesthetic and durable finish.
For over 30 years, SOPREMA has been offering proven solutions for the waterproofing and protection of concrete structures designed for vehicular traffic, such as parking decks and bridge decks. Discover our full line of liquid and bituminous waterproofing solutions and water-repellent coatings. SOPREMA has the waterproofing solution you need for any project.
Les fondations sont l’élément central de toute construction, assurant stabilité et répartition des charges. Pour cette raison, il est primordial de les protéger des infiltrations d’eau. Sans une protection adéquate, l’eau qui pénètre dans le béton peut compromettre l’intégrité de la structure en causant des fissures, un taux d’humidité élevé dans le bâtiment et l’apparition de moisissures.
Waterproofing Membranes for Parking Decks


Liquid Waterproofing Solutions
Liquid waterproofing systems such as ALSAN TRAFIK (made of two-component polyurethane, PMMA or hybrid resins) offer high-performance protection for underground and multistorey parking garages. These systems can be used in light to heavy traffic areas thanks to their modularity, based on the version chosen, whether BASE, GRIP or HP. They are designed to withstand the most demanding conditions, providing flexibility to accommodate structural movement, excellent resistance to abrasion, and quick installation (drying in approximately eight hours), all without VOCs. Compliant with the requirements of the National Building Code and CSA S413, these solutions are ideal for structural slabs and slabs on grade.
Bituminous Waterproofing Solutions
The bituminous membranes in the TRAFIKROCK line are well-established products, installed on more than 10 million m² in Canada since 2015. Composed of SBS-modified bitumen, these thermofusible membranes are robust, resistant to thermal shock and suitable for studded tires. SOPREMA offers two systems: TRAFIKROCK BASE for multistorey parking garages and TRAFIKROCK HP for parking decks located above habitable spaces. Installation can be mechanical, using the MINI MACADEN, and the systems include primers, base sheet membranes, cap sheet membranes and complementary mastic. These solutions ensure total adhesion to the substrate, even under extreme conditions, while allowing a durable and reliable application.




Water-Repellent Coatings and Sealants
SOPREMA’s dampproofing products, such as ALSAN CIVIL SN 471 and SN 474 silane-based sealants (100% or 40%), form an effective penetrating barrier against water. Approved by the Québec and Alberta ministries of transportation, these sealants also meet the CSA S413 standard for non-structural slabs. They help preserve the water vapour permeability of concrete while protecting the reinforcement from corrosion, particularly that caused by deicing salt. Their application extends the durability of surfaces exposed to contaminants, thereby minimizing long-term structural damage. It is an ideal solution for enhancing the resilience of concrete structures and preserving their appearance.
Benefits of
SOPREMA’s Parking Deck Solutions
Optimize the durability, performance and safety of your parking decks with SOPREMA waterproofing solutions. Our proven systems meet the highest industry standards and are designed to protect infrastructure against water, de-icing salts, abrasion and structural movement, while ensuring efficient and compliant implementation.
Wide Range of Available Technologies
SOPREMA offers solutions adapted to every need, from liquid systems (polyurethane, PMMA or hybrid) to thermofusible bituminous membranes and silane-based water-repellent sealants. This wide range of products makes it possible to meet the specific requirements of each project, whether it involves structural slabs, slabs on grade or multistorey parking garages.
Performance and Compliance
Our systems comply with the National Building Code (NBC) and the CSA S413 standard. They offer increased resistance to abrasion, thermal shock and chemicals, ensuring outstanding longevity even under heavy traffic conditions.
Efficient Installation
Thanks to VOC-free, fast-curing products compatible with specialized tools like the MINI MACADEN, our solutions can be installed quickly, minimizing service interruptions.
Sustainable and Aesthetic Solutions
Our membranes and finish coatings effectively protect surfaces while providing a clean visual finish. Some finishes incorporate anti-slip and UV-resistant features, making them ideal for use in pedestrian or outdoor areas.
Professional Technical Support
Customized support provided by SOPREMA experts, from system selection to installation, ensures compliance with standards and optimization of technical performance over the long term.
Full Product Line for Parking Decks
SOPREMA offers a complete range of products designed to effectively protect parking decks. Our solutions ensure long-lasting waterproofing, resistance to harsh weather conditions and increased longevity of exposed surfaces. Protect your infrastructure with systems adapted to Canadian conditions.


Solutions Designed for the Protection of Parking Decks
We recommend aliphatic polyurethane membranes, which are resistant to UV rays and temperature fluctuations. Please note that aromatic polyurethane is not suitable. Modified-bitumen sheet membranes are also an option, as they are covered with an asphaltic layer.
There are benefits to both types of membrane. Liquid membranes form a monolithic, seamless barrier that conforms to surfaces, even irregular ones. They can be installed without the use of a flame and are quite thin, i.e. less than half an inch.
Sheet membranes generally appear somewhat more rigid because their thickness is controlled at the production plant and users can actually feel reinforcements to the touch.
However, it should be noted that a heat-welded installation lends a certain degree of fluidity to a sheet membrane, allowing it to adapt to irregular surfaces, and certain liquid membranes also have particularly interesting mechanical properties.
The CSA S413 standard, which is referenced by the National Building Code for the design of parking structures, prescribes maintenance methods for parking decks. The standard states that the senior consultant must provide the project owner with a maintenance manual that includes, among other things, the following elements:
- Annual inspection
- Cleaning.
In particular, water absorption or chloride ion content tests can be carried out to check the decrease in waterproofing effectiveness, as described in CSA S413. To maintain the waterproofing membrane when necessary, targeted corrective work can be carried out, including membrane reinforcement.
SOPREMA has published a maintenance guide for pedestrian and vehicular traffic areas. The guide specifically highlights periodic inspections, cleaning, and precautions to take during maintenance and repair.
Featured Parking Deck Protection Systems
Ensure the durability and safety of your parking deck with robust, specialized waterproofing systems custom-designed by SOPREMA. We offer a wide range of solutions to meet your specific needs and give you complete peace of mind.


