Technical Focus
solution requires loading with a screed, as this would be subject to negative water pressure. Services coming in through walls and floors should be designed to be watertight. If the services are penetrating concrete, a waterstop should be installed around the service before the concrete is poured to form a consistent seal. Services through masonry walls need a collar, which can be formed using waterproofing mortar and an elasticised waterproofing slurry.
Designing in flood resilience When designing for flood resilience, the goal is to make it as easy as possible to clean the interior of a house after a flood. Floors and walls should be finished with an easily cleanable surface such as tiles. If the floor surface isn’t water compatible it should be easy to take up and replace. Water compatible doors and woodwork should be considered. Electrical circuits and sockets should be situated above the expected water level and in a kitchen, appliances can
CROSS SECTION OF DRYROD DAMP PROOFING APPLICATION The Dryrod damp-proofing rod is a synthetic rod made from advanced polymers
be raised up off the floor. Where the design flood level means that a water entry strategy is needed, a cavity drainage membrane can help with the management of flood water. A cavity drainage
membrane, such as Oldroyd, directs the water down the walls into a perimeter drain with the water running to a sump where it can be evacuated using a pump. Services penetrating walls
treated with the cavity drainage membrane will require a collar detail using an overseal tape. Doors and windows should also be sealed.
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STORMDRY AS PART OF A FLOOD RESILIENCE SYSTEM The purpose of Stormdry in this instance is not to stop flood water from entering the property but to limit damage and aid speedy restoration
KEY: 1 Safeguard Drylining System
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2 Oldroyd Cavity Drainage System 3
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Vandex BB75
4 Dryzone Damp-proofing Cream 5 Stormdry Masonry Protection Cream & Repointing Additive No.2
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