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Summary
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Formwork props prevented the installation from occurring in one phase
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Arti returned to finish the waterproofing installation on a second phase
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The completed residential development on Shuttleworth Road, Wandsworth
As part of the Wandsworth regeneration programme to increase the number of affordable homes, Wates Residential were awarded the contract to build a new, six-storey block of apartments on the Shuttleworth Road.
The Project
The structure included 59 concrete balconies, all requiring waterproofing with a product with a minimum fire rating of A2-s1-d0, tested to BS EN 13501-1.
Not only did Newton recommend a product already used on a similar project this year, but they also recommended the expert services of Newton Specialist Contractor Arti Structural Waterproofing Arti Structural Waterproofing.
The Solution
Because the minimum fire rating of A2‑s1‑d0 now excludes the polyurethane and polyurea products commonly used on balconies, Newton recommended the cementitious and modified‑polymer Newton 103-S membrane. As well as carrying the required fire rating, 103-S can resist extremely high positive and negative water pressure, forming a hard, durable coating with a degree of elasticity that makes it ideal for protecting concrete.
Arti also used Newton 203-RM to create smoothing fillets, and Newton 912-RT to reinforce the 103-S over the joints, details and changes in direction.
On site, Arti also needed to work flexibly, as the programme could not proceed without the waterproofing and fireproofing of the balcony upstands. However, due to the propping of the concrete formwork to the floors above, Arti had to execute their installation in two phases of efficient and detailed waterproofing.
The Result
Thanks to a meticulous eye for detail, as well as careful planning and thorough preparation of the concrete balconies, Arti were able to complete the waterproofing of all 59 balconies in two stages. The team managed this while delivering the required A2‑s1‑d0 fire rating and completed the installation quickly without compromising the build programme.
We are very pleased to have the opportunity to use Newton’s unique products to provide a robust and quick solution for Wates Residential in order to meet the new building fire regulations at the same time as achieving the required waterproofing to the balcony structures. It has also been a pleasure to work with a very professional construction management team throughout. Lucian Ardeleanu, Managing Director, Arti Structural Waterproofing
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