A MCD Construction Project
- Concrete repairs
- Sika Balcons system
What did Ormonde Court require?
Ormonde Court is a large Art Deco styled complex of prestigious private apartment blocks, situated on the Upper Richmond Road, Putney.
Built-in the 1930s the development comprises of 4 blocks surrounding an inner garden square, all of which were in need of external works as it had been a long time since maintenance works had been carried out. The main scope of works tendered for included external decoration, the application of a Sika Balcons Waterproofing System, repointing, and concrete repairs.
Due to the scale of works required and the cost to the clients, the decision was made by the board to phase the works and spread the cost over a number of years.
Once money had been collected the management company, JC Francis & Partners Ltd, appointed DHP property consultants as CDM. We won the tender as principal contractors for the first phase of works to the front, road-facing block.
A five-tier external scaffold was needed for access, once this was erected a thorough inspection was performed. The majority of the tender package was accurate, but there was a significant increase to the initial estimate of concrete repairs needed, due to water penetrating the balcony slabs over the years.
It was agreed by the client that whilst the scaffolding (a substantial cost to the project) was erect, all necessary and financially viable works would be undertaken.
What did we do?
MCD Construction arranged for the building to be completely jet washed, and stains treated with a mild acid and wire brush where required. Approximately 110m2 of the mortar was ground out 25mm and re-pointed.
Deteriorated concrete was mechanically removed and repairs were completed using the Sika Monotop concrete repair system. A four-part build-up comprising primer, re-profiling mortar, a fairing coat and a Sika Ferroguard 903 corrosion inhibitor, which restored the concrete slabs back to their original state.
All rendered areas were hammer tested and loose material was removed prior to re-rendering. Previously painted external areas were then washed down and primed prior to two coatings of Sika 550W, a specialised elastomeric paint with excellent crack-bridging tolerance, being applied.
This initial phase comprised of 16no balcony areas. In preparation, all floor tiles and debris were removed. Then the concrete slabs were jet washed and bio-washed. Damp tolerant concrete primer was used prior to the Sika Balcons Waterproofing System being applied. The base coat was applied, embedding the fibreglass reemat. Once cured, a mid-coat of Balcons was applied. Then the perimeter of the balcony was masked 75mm in from the edge and a further coat applied with a sand aggregate, to provide an anti-slip surface. A final sealer coat encapsulated all layers, ensuring the balconies are completely waterproof
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