The Gunnery, Kent

Methodology

Eradicure Alliance were first approached in November 2016 to assist on a unique project which involved transforming an unused fort/home on a 92ft cliff edge in Kingsdown, Kent. Delta technical consultant Kevin Dodds was also invited along to Eradicure's unique project.

This structure is steeped in history unlike any other building in its location.  The Gunnery was originally a military base with extended underground rooms and thought to have ‘secret rooms’ underground.

The building had suffered from fire damage as well as vandalism over the years and had been left to ruin.

Eradicure first laid consideration to detail and logistics. It was phased using a project management system.  The first phase being demolition.  Over a period of 8 weeks over 200 tonnes of construction waste was removed from site ready to make way for the second waterproofing phase.

System Components

The second phase on the project was how to ensure the building was watertight ready for development. The waterproofing needed to provide the Grade 3 waterproof environment in accordance with Table 2 BS 8102 (2009).

The structure was built to withstand bomb attacks and some of the concrete structure is in excess of 500mm thick.  Built into chalk, a naturally well draining substrate, water ingress was only one of the issues, as condensation in the underground rooms needed attention.

Eradicure were interested to incorporate the Köster products into this project, knowing that the Köster brand offers superior remedial qualities.

Following site inspection and discussions on the various options available through Delta’s extensive range of products, the following products were deemed most appropriate:

Cracks within the concrete floor: Köster 2IN1 injection resin. Kevin suggested this material as it would save man hours of chasing out heavily reinforced concrete.  The Köster 2In1 injection resin has 3 objectives, to restore the aesthetics of a building, to stop moisture entering cracks and offers structural repair.

Wall/floor joint: Where the masonry walls meet the concrete: Kevin suggested using an angle grind to chase back into the joint followed by application of Köster KD Blitz to wet and damp joints, followed by application of Köster Polysil TG500 and an initial application of NB1 to approximately 150mm either side of joint and over KD Blitz application. Once cured a further application of Köster Repair mortar plus as a minimum 30mm fillet, packed into the joint. Followed by 2 further coats Köster NB1.

Wall/wall and Wall/soffit joints: Kevin suggested applying Köster polysil TG500 followed by 1st coat Köster NB1 (150mm either side of joints), then install 30mm fillet Köster Repair Mortar Plus – packed into the joint. Once cured applying 2 coats of Köster NB1.

Expansion joints: These should be cleaned of any loose dust and debris, with an application of Köster Polsil to joint areas then filled with Köster KB FLEX 200, following the application of the Köster NB1 throughout.

Results

The finished product will be a luxury dwelling which offers panoramic views of the beautiful coastline and even the coast of France on good days!

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