StoTherm Classic external wall insulation has been used to improve the energy efficiency of two estates owned by Broxbourne Housing Association, the largest provider of social housing in the Borough of Broxbourne.
The aim of the regeneration project is to improve the thermal efficiency of the 1970s blocks to exceed current building regulations. The regeneration, which qualified for funding under the CERT (Carbon Reduction Emissions Target) programme, provides residents with warmer, better looking homes and reduced fuel bills. The walls of both estates in this project have now achieved a U Value of 0.26 W/m2K
Woodward Ambrose Architects regarded external wall insulation as the only option to upgrade the solid wall structures. Where there were cavity walls, filling the cavity was considered, but because of extensive thermal bridging this was not a practical option.
StoTherm Classic was specified primarily because of its excellent durability. The reinforcing mesh that forms part of the system gives a market-leading impact resistance of up to 50 joules. This provides long-lasting surface integrity even in areas where the render is likely to receive rough treatment.
The specified render finish was StoLotusan, chosen because of its unique Lotus-effect finish that actively repels dirt and functions as a self-cleaning surface. StoLotusan is available in over 400 colours and in the Broxbourne project a range of colours was chosen to enhance the visual appeal of the buildings.
The StoTherm Classic system was installed using Turbofix – a quick adhesive system that can be used with almost any substrate. In this project the existing walls were a mix of cavity brickwork and no-fines concrete with a pebble dash finish. The EWIS could be applied directly without the need for extensive repair or renovation to the substrate.
The regeneration of Fishers Close in Waltham Cross, and Coopers Walk in Cheshunt, represent the final stage of the promises which were made to residents on transfer from Broxbourne Council. It equates to over a £7 million investment to upgrade 8 Blocks, 136 properties in all.
Broxbourne Housing Associations Chief Executive John Gieson said: When we bought the Councils housing stock in 2006 we promised residents we would make extensive improvements to Coopers Walk and Fishers Close. Despite working in a challenging economic climate, we have delivered on our promise. We are delighted that all our properties now meet the Decent Homes Standard and many exceed it.
Client: Broxbourne Housing Association
Architect: Woodward Ambrose Architects
Main Contractor: Lakehouse
Subcontractor: HA Marks
tel: 01256 337602 fax: 01256 810887