BRIGGSAMASCO has provided details of the firm’s multiple-application waterproofing programme as part of the regeneration of London’s Battersea Power Station.
Phase Two of the landmark project includes more than 250 residential apartments, approximately 100 new retail, food and drink outlets, a 2,000-capacity events venue, and substantial new office space.
Appointed by Battersea Power Station Development Company and MACE, BriggsAmasco was tasked with ensuring three key elements were supplied with a watertight solution.
The power station’s main energy centre is described as ‘pivotal’ to the development’s heating and cooling provision. A high-grade waterproofing system was required to safeguard its below ground service equipment. This meant designing a solution with durability to withstand heavy traffic. Rather than use traditional tarmac or concrete, BriggsAmasco specified an IKO Permatec system. To protect this initial waterproofing layer, the firm explained that a 40mm-thick IKO Permapark mastic asphalt system was installed.
The combination of asphalt over the primary waterproofing was said to mark an ‘industry-first’, meaning the below ground waterproofing’s protection layer could remain in-situ.
BriggsAmasco also developed a system to re-waterproof the station’s white chimneys, which were taken down and rebuilt. Environmental concerns meant IKO Permaphalt, rather than lead, was specified. This is the same solution originally applied to the four chimneys, with the addition of advanced polymers. BriggsAmasco said it designed a mastic asphalt solution to waterproof and line a Peregrine falcon’s nest, providing the birds with a permanent home within the chimneys. The product was used as it is rot and vermin-resistant, as well as being waterproof and non-toxic.
In collaboration with the insulation manufacturers, BriggsAmasco also devised a PIR/VIP panel to ensure a series of apartment terraces within the revamped power station achieved the required thermal requirements. The panels were installed as part of a waterproofing build-up finished with IKO’s GoldSeal Built-up Felt Roofing.
Additional features innovated by BriggsAmasco included the installation of a series of sun tubes. The stainless-steel units will introduce natural daylight to boost the low-carbon credentials of the retail outlets. The company completed further detailing in the form of lead flashings and cappings, installed to the main power station building and apartment terraces.
