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    Hot Spray Applied Waterproofing Solutions for all Secondary Containments

    Containment and retention basins are required by law to prevent hazardous waste or chemicals from entering the environment through leaks in tanks. The basins are usually made of concrete and have to guarantee the highest sealing security. Even the smallest pore may have serious consequences for people and the environment. 
    The secondary containment is intended to safely contain any accidental liquid spill in a second basin on a temporary basis until response teams arrive and the plant has been safely shut down.

    There are two main principles that need to be taken into consideration in the design of secondary containments: any liquid must be contained irrespective of its temperature and liquids start cooling down immediately after they leave the primary containment. Taking this into consideration, a secondary containment protection system needs to match both the type and the temperature of the chemicals stored and to bridge cracks in order to ensure that potential leakages can be contained whenever they occur, even in the case of substrate cracks. 

    Hot spray systems from the MasterSeal range perfectly match all these requirements and ensure long-lasting protection for the secondary containment structure.


    To request a sample of our hot spray applied water proofing membranes and to download the technical drawings and checklists that our experts prepared for you!

    ​​​​​​​​​Key benefits at a glance



    Although they are extremely tough, hot spray systems are highly elastic and can bridge a crack of more than 2 mm. Whatever thermal expansion, or cracks may occur in the structure, the membrane will not be affected by any cracks.

    ​​​MasterSeal Coating
    Fast curing and dandering

    Fast curing

    Hot spray membranes take only a few seconds to harden, allowing a very fast return to service and minimizing downtime and risks on the job site.



    A primer is the foundation of all systems and ensures adhesion between the protective system and the substrate.

    Chemicals and mechanical resistance

    Chemical and mechanical resistance

    Hot spray membranes are exceptionally robust and resistant to mechanical wear, abrasion and impact stress as well as to chemical attacks.

    Conductive layer

    The conductive layer is optional and it is applied only when antistatic properties are required.

    Durability and maintenance costs

    Durability and maintenance costs

    Hot spray membranes are a long-lasting and very reliable solution which ensures a significant reduction in maintenance costs during the life cycle of the structures to which they are applied.



    The membrane is the watertight and flexible layer which gives its properties to the complete system.



    Checklists & Technical drawings

    Click on the link below to download the checklist and the technical drawings that our experts created to guide you successfully through your car park projects!

    Product sample

    Product sample

    Click here to request a sample and see for yourself how flexible and resistant our hot spray membranes are!

    ​​Articles and videos​​

    Hot spray applied waterproofing systems for secondary containments

    In this video Klaus Claassen, Technical Product Manager Waterproofing Solutions, challenges the exceptional properties of MasterSeal M 689 to demonstrate its high chemical resistance.

    ​​Discover other fields of application

    Hot Spray Roofing


    Hot spray waterproofing systems can be easily applied to all kinds of buildings, all roof shapes, substrates and design details. They are lightweight and resistant to all weather conditions.

    Secondary containment solutions to protect the environment and manage business risks

    Secondary containment solutions to protect the environment and manage business risks

    Operators of processing plants such as petrochemical and other chemical plants must have plans and measures in place to contain a hazardous spill of chemicals that can contaminate soil and water under most countries’ environmental regulations.

    Hot Spray Water tanks

    Water Tanks

    Hot spray systems cope very well with the specific challenges of water storage where the water tries constantly to escape through the weakest parts of the structure.

    Hot stored chemicals: calculation of surface temperature and reduction of up to 30% in repair costs

    Hot stored chemicals: calculation of surface temperature and reduction of up to 30% in repair costs

    Two major principles regarding the functionality of secondary containments are: first, a hot liquid has to be contained; second, the liquid starts cooling down immediately after it leaves the primary containment.


    Hot Spray Car parks

    Car Parks

    Hot spray systems ensure optimum protection against the different challenges of a multi-storey car park and prevent rain water, snow and deicing salts from migrating to the lower levels or inside the building.