landscaping & external works; roofing

“Most new housing developments are designed to adapt to future climates, but this is not the case with existing stock”

•81 per cent of residents agree or strongly agree that the quality of the green spaces has improved significantly

•£4.39 of benefits for every £1 invested (SROI assessment) •22 Green Team trainees involved in the project, all achieving City & Guilds Level One in Practical Horticulture Skills

•46 H&F Council maintenance contractors and senior managers trained •48 representatives from other housing providers engaged in masterclasses


The project has demonstrated that retrofitting open spaces in social housing environments is both necessary and cost-effective, emphasising the role these spaces can play in increasing urban resilience to climate change. The experience also confirmed that such projects work better when not

delivered in isolation, but with cross-disciplinary working at all stages. The comprehensive programme of resident engagement has highlighted that residents are expert users of spaces and have valuable knowledge of their local environment – and therefore their involvement from the start is essential to secure their input and support.

By carrying out a comprehensive approach to monitoring and

evaluation, with technical elements led by the University of East London, it was established that the quantification of project impacts can help to make the business case for such schemes, particularly where budgets are limited. Taking on board these experiences and lessons learned, Groundwork

London developed an Implementation Guide which aims to equip other housing providers with the tools and resources to implement climate change adaptation measures across their own housing stock. The Guide provides advice based on the activities and outcomes from the project, and uses the three project sites as best practice examples.

Hannah Baker is programme manager at Groundwork London.

Social housing tennants warm to Kemper System roofing solution


emper System’s Stratex warm roof system has been used to upgrade the roofs of five social housing apartment

blocks as part of an investment programme supporting a £20 million stock transfer from Gloucester City Council to housing association Gloucester City Homes. Combining Kemper System’s Kempertherm PIR insulation board and the company’s Kemperol V210 cold-applied liquid waterproofing membrane, the warm roof upgrades form part of a £29 million 30-year plan, which also includes construction of 100 new social housing dwellings by 2020; the first to be constructed in the city since 1991. Delivered by main contractor, Mears Group, the improvement works focused on an external upgrade to five tenanted blocks; two on Sweetbriars Street, two on Union Street and one on Columbia Street. All works had to be carried out while the homes remained fully occupied, so the use of Kemper System’s cold-applied liquid

membrane was the ideal solution for delivering a robust solution with a BBA accredited service life of 25 years, without causing undue disruption or risk to tenants. Roofing contractor, Rateavon, stripped the

existing metal deck roof of each block and installed a new OSB (oriented strand board) deck as part of the strategy for maximising the service life of the existing accommodation. A Kempershield primer was then applied to the roof surface and allowed to cure before the installation of a Kempershield vapour control layer (VCL). Kemperfix adhesive was applied onto the roof

surface and the Kempertherm insulation board was adhered to the roof, using the system’s tongue and groove structure to interlock each piece of board and provide a uniform finish. The Kemperol V210 cold-applied liquid

waterproofing membrane was then applied in a single wet-on-wet process involving the application of liquid resin to the substrate

followed by installation of the reinforcement fleece onto the wet resin. More resin was then immediately applied to ensure complete saturation of the fleece before the system was allowed to cure to form a durable, monolithic waterproof membrane that cannot delaminate and remains permanently elastic and U/V stable.

01925 445532

42 | HMM March 2017 |

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