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Rawnsley House, Bristol



Rawnsley House

Thermally efficient Silkolitt Lite external wall insulation (EWI) from K Systems has been used on the pioneering, energy-saving refurbishment of a Bristol apartment block.

The £1.5million upgrade of 16-storey Rawnsley House is thought to be the first in the UK to benefit from the Community Energy Savings Programme, a Government fund delivered to homes in low income areas through partnerships between Local Authorities, Community Groups and Energy Companies. Landlord Bristol City Council worked closely with EDF Energy and carbon reduction company Sustain to deliver the scheme.

3750m2 of K Systems Silkolitt Lite EWI system, incorporating 70 and 80mm EPS insulation panels was
installed by approved installer Rateavon Ltd. U-values of the building improved from 1.28W/m2 K to the target 0.35W/m2 K and the superior thermal efficiency is also set to benefit residents with savings in their energy bills, expected to be in the region of £158 per year.

The original 1960’s brick appearance of Rawnsley House was maintained through the use of K Systems Traditional and Acrylic brick slip which were also installed by Rateavon Ltd. Traditional brick slips were used around the ground floor of the building providing a durable, impact resistant finish whilst Acrylic brick slips provided a lightweight solution on the remainder of the building, with no visible join between the two systems.

Our Technical Support Team worked closely with Rateavon, Bristol Council and the project team throughout the duration of the project, providing U-Values, 3D images, Condensation Analyses and full-scale samples, to help ensure the success of the scheme.

Additional information

Building Type


Insulation Type




Render / Finish

Silicone render

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