Category Six

Excellence in insulation

Winner: Renocon Ltd

Sponsored by: QANW


There are four 10-storey, 1960s built blocks of flats on the Gasgoyne Estate managed by Hackney Homes in the east London. They were poorly insulated and costly to run.

Now new external insulation by Renocon, plus other energy efficiency measures, has significantly bought down the average running costs by about two-thirds, from £3000 to £1000.  Plus it noticeably helps Hackney Homes to meet its carbon reduction targets.

Regeneration of the Gascoyne Points was subject to an options appraisal, which included demolition. This unsettled residents but a special report concluded that with minor repair, the building structure should have at least another 30 years of life.

Internally, flats should be brought up to the Decent Homes Standard, with upgrading of heating and electrical installations, plus fire precaution work carried out.

The major part of the project was for Renocon, who are members of INCA (Insulated Render and Cladding Association), to externally insulate the entire facades. The company supplied technical advice and undertook various tests to establish the condition of the existing precast concrete panels fixings and the overall condition of the facades.

After careful consideration by the Hackney Homes the final speciation chosen was a 100mm mineral insulation with fire retardant properties.  A silicon render finish was installed to all external elevations except for ground floor level, which was finished with brick slips to achieve a design feature.

Finally the garages that are at ground floor and go under the building were internally insulated to prevent cold bridging.

Residents are unanimously happy with the result. Secretary for the Tenant and Resident Association, Veronica Davis said: “It’s good to see the improvement of the blocks.  It’s much quieter and warmer since the works have taken place and we are really happy with the results.”