UK housing market

New brick colour created

A new red brick colour has been created for the Saint-Gobain Weber External Wall Insulation (EWI) system chosen by Rotherham Metropolitan Borough Council (RMBC) for their property upgrade programme in the Dinnington area.

The weber.therm XM EWI system, finished with weber.rend RB Render Brick in the new Georgian Red colour, has been created to accurately match the established red brick Georgian properties in the area. The senior Building Surveyor for RMBC required that the properties being thermally improved should match the traditional aesthetics, as far as reasonably practical, and the Saint-Gobain Weber laboratory at Flitwick, Bedfordshire, subsequently developed the new colour to add to the existing palette.  Additionally, a distressed finish has been achieved by artistic application of weber.sil P, a silicone enhanced masonry paint, to create a more natural, aged brick effect.

The 88 properties in this project were built in the 1930s and were identified as hard to treat, some with solid walls and some with narrow cavities of varied dimensions. To achieve a target u-value of 0.28W/m²K from 1.48 W/m²K, 80mm of expanded polystyrene (EPS) insulation has been fixed to the outer walls as part of the weber.therm XM system and finished with the weber.rend RB Render Brick finish, a combination of two coloured mortars used together to create the brick effect finish.

Once the insulation material has been fixed to the structure, an initial coat of weber.rend LAC render is applied over the insulation with a mesh-cloth reinforcement laid into it. A second pass of weber.rend LAC is then applied which is finished with a lightly comb-scratched surface to encourage the bond with the weber.rend RBB base coat which acts as the mortar line in the brick effect. This is applied at 7-8mm thick and ruled to achieve a flat, in-plane surface. When this has taken-up a 2-3mm coat of weber.rend RBF face coat is applied and the surface lightly textured with a soft bristle brush to create the brick face. When this coat has taken up the brick pattern is marked carefully and cuts are made through the face coat render to expose the base coat to achieve an authentic, bonded brickwork appearance.

The weber.rend RB system is a cost effective and attractive finish giving excellent weather protection for varying climatic conditions.

In conjunction with the brick effect, the existing rendered panels were replicated using weber.therm XP, a through-coloured one coat render in ivory achieving the welcome, fresh contrast RMBC required.
www.netweber.co.uk

About Roger Bisby

Roger Bisby is an English television presenter and journalist, known for his expertise in the British building industry.

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