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Delta Type C Waterproofing for a vaulted basement in Leeds

Delta Type C Waterproofing for a vaulted basement in Leeds

Delta Membrane Systems Ltd have provided their Type C Waterproofing System for a vaulted basement in Leeds, enabling an additional office and music studio.

Delta Registered Installers, Premier Preservations, were approached to offer a waterproofing design and system to a basement, to ensure the vaults – located under the entire footprint of the property, were protected from water ingress.

The scope of the works included a full waterproofing system for the basement which was a mixture of vaulted ceilings of solid, lath and plaster with external walls partly below exterior ground and approximately 500mm thick.

System Components:
• Delta MS 20
• Delta MS 500
• Delta Cornerstrip
• Delta Plugs
• Delta Channel
• AlertMaxx2 High Level Alarm
• PowerMaxx2 Battery Backup

Premier Preservation’s CSSW specialist waterproofing design team constructed a fully maintainable, Type C (Drained) Waterproofing System to provide a Grade 3 habitable environment.

The system fully complies with the requirements set out within BS 8102:2009, Code of Practice for Protection of Below Ground Structures against Water from the Ground.

The main contractor undertook groundworks under the supervision of a structural engineer with a new slab being cast.

The new slab construction enabled Premier Preservation to incorporate chases and voids for the basement drainage system (the channel and sump pumps).

Prior to the Type C System being installed, the new concrete was treated with an anti-lime inhibitor, with all construction joints and soffits.

It was safeguarded with Koster Repair Mortar Plus in creating 40mm, 90° construction joints (curved fillets) in preparation for the Type C waterproofing system to ensure smooth installation of the Type C System.

The principles of a Delta Type C cavity drainage system are to allow moisture or running water to travel behind the membrane within a controlled drainage system.

Any water ingress is collected and discharged via a suitable sump pump.

To ensure the Type C system was fully maintainable, inspection ports were located at every major change of direction or 6-8 linear meters on a straight run.

A dry basement was delivered to the customer’s specification which meets and exceeds the requirements of BS8102:2009 offering a Grade 3 habitable space.

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Delta Membrane Systems

Delta Membrane Systems

Delta Membrane Systems Limited is the leading Type C Cavity Drain Membrane manufacturer in the United Kingdom being the UK arm of Dörken Gmbh & Co KG, the world's largest manufacturer of cavity drain membranes.

With over 125 years of...
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