Leisure and hospitality
Product / system manufacture
Product / system supply
Oaks Damp Proofing
Delta MS 20; Delta MS 500; Delta Cornerstrip; Delta Plugs; Koster KD System; Dual V3 Sump pump; Delta Channel
Originally a public house, the Blonde Hedgehog in Saint Anne, Alderney in the Channel Islands has been developed into a luxurious gastropub and hotel.
Having previously undertaken work for the client, Delta Registered Installer Oaks Damp Proofing was commissioned to design and install a cavity drain waterproofing system that would meet BS8102:2009, the British Standard for the protection of structures against water from the ground, Grade 3 (no dampness or water penetration acceptable) to the cellar.
The cellar, used historically to store beer, was not waterproofed. Beer cellars are notable for being very cold and wet. For hundreds of years beer cellars were always underground - because underground rooms are generally quite cool.
After undertaking site inspections to the structure, Oaks recommended the installation of a Delta Type C cavity drainage system.
The cellar area was fully earth-retaining and borders the main road, meaning there was a lot of hydrostatic water pressure bearing against the structure.
To reduce risk and slow down the volume of water entering the structure, Oaks treated the walls of the cellar with the Koster KD System.
A new basement slab was incorporated into the cellar which allowed for inclusion of the Dual V3 sump pump and channel recess. Prior to the installation of the Delta Type C system all new concrete was treated with Koster Polysil TG 500, an anti-lime inhibitor.
Preceding the installation of the Type C cavity drainage system, Oaks ensured the waterproofing design would easily be maintainable and repairable.
Using a Type C cavity drainage system enables the management of any water ingress in a controlled process. Any moisture or running water ingress travels behind the membrane to be diverted to a Delta submersible pump allowing for the required Grade 3 environment.
The Blonde Hedgehog’s cellar has been converted from an unused room into a desirable relaxation area for diners and hotel guests.
By incorporating a Delta system, the cellar is completely protected against water ingress.
With Delta’s tested product life-cycle and installation by Delta Registered Installers, the owner can be assured that the project easily complies to British Standards.