LSPC Limited was again appointed as Main Contractor on this unusual extension project. The scheme involved close liaison with both the Client and the Architect.
The existing semi-detached house was a typical pre-war, solid brick construction. A two storey extension was constructed to the rear of the property by LSPC who also undertook all necessary ground works and drainage. A new, concrete slab footing was also installed.
The new extension was built with 180mm Thermalite blocks around a new steel reinforcing frame. A new flat roof was installed cutting into the existing roofs on the main house whilst a glass roof system was incorporated into the ground floor roof for better light ingress into the new kitchen area. The existing tiled roof was stripped and re-covered using a breathable roof membrane and new concrete tiles.
New windows were installed to all rear and gable elevations these being sourced by the client to his specification. Patio doors were also installed to the new kitchen extension.
To achieve a highly thermally efficient extension, we then clad the Thermalite blocks with 140mm of Mineral Fibre insulation slab and for aesthetic effect we used a Thermosan K1.5 self-cleansing render finish. To achieve additional thermal performance we also insulated the blockwork areas below ground with a 140mm EPS 200E insulated board and finished this with a CT114 waterproof adhesive.
New, bespoke rainwater goods including an internal roof valley tray for the glass roof area were manufactured in grey, powder coated aluminium.
Internally all re-plastering to ceilings and walls, new stud walls and first and second fix internal joinery was undertaken by LSPC.
A new boundary fence was then erected along with a new lean-to cycle store. Upon completion of the foregoing landscaping works were then undertaken to complete this highly energy efficient extension project.