Hot Spray Applied Waterproofing Solutions for all Water Tanks

Water is life and ensuring its proper containment has been a priority since an early stage in human history. Over the centuries, water tanks of many shapes and types have been developed and their effectiveness has been steadily improved. In all water tanks, every day and indeed every single minute, the water tries to escape through the weakest parts of the structure. The challenges that need to be taken into account include water flow, water pressure and any chemicals which may have been added to the water. 

A properly designed water tank works to specifically address and mitigate the various environmental factors that could affect the quality of water and cause contamination.

Hot spray systems from the MasterSeal range cope manage the specific needs of water storage highly effectively, ensuring protection against cracks which may appear in the structure and providing a reliable and long-lasting solution.

They can be used in many fields of application like water treatment plants, water containment in industry and water channels. As they are applied by spraying, they can be used for applying coatings to tanks of any shape.


Darren Priddle

Technical Sales Manager - Waterproofing

+44 7974681121


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



Hot spray systems are highly elastic and can bridge a crack of more than 2 mm. Even in case of deformation of the structure or cracking, the water will remain inside the water tank.


​​​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. Without top coat, they are resistant to abrasion and impact stress as well as to chemical attacks coming from cleaning procedures or waterflow.


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

Durability and maintenance costs

Durability and maintenance costs

Hot spray systems 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.

Top coat

The top coat is optional and can be applied in case a specific colour is required.

​Select the correct system for your water tank​​

​​MasterSeal 6689
Key benefits
  • High resistant membrane making the top coat optional for a fast return to service
Standards and certifications​
  • ​EN 1504-2 - Products and systems for the protection and repair of concrete structures; Dynamic crack-bridging
  • EN 13529 - Products and systems for the protection and repair of concrete structures - Resistance to severe chemical attacks
  • EN 13813 - Screed material and floor screeds. Properties and requirements
​​System build-up​



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 water tanks 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 water tanks

Our expert Klaus Claassen challenges the fast curing and crack-bridging properties of our hot spray applied waterproofing solutions. Check it out now!

​​​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.

The challenges of water containment

The challenges of water containment

Water is life and ensuring its proper containment has been a priority since a early stage of humanity. Throughout history, wooden, ceramic and stone containers have been used as water reservoirs of natural origin.


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. 

Hot spray VS other waterproofing technologies for water tanks

Hot spray VS other waterproofing technologies for water tanks

Water may seem to be a very simple substance, but that is not the case! Most of the people working in water industry are well aware of this fact and face the challenges of water management every day.


Hot Spray Secondary containment

Secondary containment

The combination of excellent chemical resistance with crack-bridging properties makes the hot spray systems a preferred solution for secondary containment applications.