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.

Add to Project Board

Create a new project board:


View Basement Waterproofing Membranes Product Entry
Delta Membrane Systems

Delta Membrane Systems

Delta Membrane Systems Limited is a manufacturer and provider of specialist structural waterproofing solutions, covering Types A, B and C waterproofing, combination waterproofing, damp proofing, basement drainage, flood resilience and ground gas...
View company profile

Make an enquiry to Delta Membrane Systems

You may also be interested in this related Case Study: Delta Waterproofing System Installed in Residential Development Read Now