Brick building with brown protective covers over windows and a matching steel door for flood protection

Structural protection

Beyond simply keeping water out, our wall protection works with the structure itself. At the base of a 1m-high wall, flood water exerts around a tonne of pressure, so we review structural integrity for every project against the specified design flood level and seal below finished floor level to resist water being forced up into the building under hydrostatic pressure.

 

Duct sealing, without electrical alterations

Our silicone-based sealing systems allow existing cabling to stay exactly where it is, with the seal formed around it. Each cable is individually sleeved within the duct, so alterations and new cables can be added with little fuss, as and when required. The seal is both watertight and gas-tight, proven to 1 bar for 24 hours, keeping flood water out while preventing hazardous ground gases building up inside.

 

Maintenance-free flood defence

To protect wall structures we use a cold-applied, fully-bonded liquid membrane. Seamless, with no laps or joints to fail. It guarantees total water-tightness even under continuous immersion, and flexes with the building to accommodate settlement and movement. Once installed it’s maintenance-free, with a 25+ year life expectancy, and it cures fast enough to be rain resistant within an hour of application.

Technical line drawing of MM Engineering duct and wall flood protection

 

Technical spec

  • Cold-applied liquid polyurethane membrane, seamless and fully bonded to the substrate
  • Highly flexible, up to 421% elongation, with 2.0 MPa pull-off adhesion to concrete
  • 25+ year life expectancy, maintenance-free once installed
  • Suitable for permanent water contact and prolonged flood events; rain resistant within one hour
  • Reinforcement only required at critical joints or identified cracks
  • Duct seals proven flood- and gas-tight to 1 bar for 24 hours, with on-site testing available
  • Existing cables remain in situ; new cables can be added as required
Red brick substation wall with a dark grey protective band along its base
Brick substation building with blue-grey protected lower wall and dark steel doors
Dark grey steel door set into a brick wall with a blue-grey protective lower course
Single dark steel door in a brick building with blue-grey wall protection, beside a palisade fence
Brick wall base coated in grey protective waterproof finish above gravel
Black mesh-panelled double doors set into a red brick substation building
Engineers reviewing an AutoCAD drawing on a monitor in the MM Engineering design office

DESIGN AND CONSULTATION

Every product we make is unique: designed in-house around your needs and backed by independent design calculations. We provide an end-to-end service, from initial risk assessment and design to manufacture, testing and installation. Find out how we can help you deliver your project on time, and on-budget.

Find out more about Flood Risk Design and Consultation

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