Delta: Specifying Fire Retardant Structural Waterproofing Systems

  • 5 May 2021

Paying attention to waterproofing products which offer protection in event of fire is not the norm. We hardly think of water management and fire in the same thought. However, the benefits of doing so are not quite as crazy as it sounds, Delta explains…

The demand for sustainable, cost efficient building methods and materials is increasing, as is the demand for safer building materials. The waterproofing sector should support the goal of creating healthy and safe living environments throughout the lifecycle of products.

There are many different design challenges to encounter when designing a suitable, maintainable and capable waterproofing system. From existing basements to multi-level basements – basements which will encompass high water tables at some stage during their service life.

With Delta MS 500 Fire Retardant membrane, it is now possible to specify a Type C Cavity Drainage Membrane that offers not only protection from water or vapour ingress but also protection in the event of fire.



The Delta Fire Retardant range features DELTASAFE, a new innovative fire-retardant property. This enables Delta’s MS 500 membrane to achieve a Euroclass rating of B-S2, d0 in accordance with EN 13501-1:2018.

This means it is now possible to specify a Type C Cavity Drainage Membrane that meets building requirements of today, but also that of tomorrow, without having to radically alter specifications.

A Type C Cavity Drainage System is a maintainable basement waterproofing solution suitable for new-build basements, refurbishment and retrofit projects. The Type C System comprises of a Cavity Drain Membrane, Drainage system, Submersible Package Pump and Control System. This system combats water ingress and can be used to habitable grades 1-3 in according to BS 8102:2009.

The Delta Fire Retardant Type C Cavity Drainage System is the safest form of waterproofing system available. It offers complete protection from water or water vapour and fire retardant protection.


Delta’s Design and Build Philosophy is quality driven, working with architects and trades alike, putting at the forefront construction considerations to ensure buildability, functionality, and maintainability. The result of this single approach is a consistent, complete, and quality design that is hard to equal.

The success of any project is has a heavy influence by the team delivering it. Let Delta’s Technical Team assist in your successful project. Delta don’t wait for problems to arise and then work to solve them – it identifies them in advance and solve them before they become a problem.

Whatever the needs of your project, you can rely on Delta’s Technical Team to ensure you get the right advice, support and practical help at exactly the right time to keep you ahead of the competition. Call us today on 01992 523 523 or email [email protected]

Delta Membrane Systems,
Delta House,
Merlin Way,
North Weald,
CM16 6HR
United Kingdom

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