Case Study – Paget Road Trumpington
Stylish Extensions and Refurbishments to a semi-detached BISF steel frame home built in 1947 when housing was in short supply and system building experimentation was in full swing in the UK.
In order to extend such a property and bring about 21st century style, presented various and numerous challenges to the design team and to the build team
Context
extension dining room with a wildflower green roof commenced in October 2020 and rapid progress was made within the first month. At this point the dimensions for the windows, external doors and internal doors were ready for these components to be ordered. Due to the Pandemic and the recent Brexit agreement, delays ensued and the windows arrived in May 2021 when all that could be done was complete including the majority of the finishes. The following page shows examples of the pre commencement original scenarios of external views, stair arrangement, kitchen diner and the steel frame once exposed. Clearly the house needed enlargement and modernisation as the couple were intending to start a family
Context
extension dining room with a wildflower green roof commenced in October 2020 and rapid progress was made within the first month. At this point the dimensions for the windows, external doors and internal doors were ready for these components to be ordered. Due to the Pandemic and the recent Brexit agreement, delays ensued and the windows arrived in May 2021 when all that could be done was complete including the majority of the finishes. The following page shows examples of the pre commencement original scenarios of external views, stair arrangement, kitchen diner and the steel frame once exposed. Clearly the house needed enlargement and modernisation as the couple were intending to start a family
Brief History
This photo shows an example of the steel frame and corrugated cladding used in the British Iron & Steel Federation house used as part of a post 2nd world war housing strategy using steel post and beam framing on a raft foundation with steel purlins and cladding rails with a fibre cement corrugated roof construction. Heating was provided via a coal fired fireplace in the living room with a cast iron pipe chimney projecting through the roof. The infill ground floor panels were a reinforced render panel and the insulation used was fibre glass filling within the cavities held back by fibre board panelling.
Windows and Doors
The windows were set within projecting steel surrounds and originally had metal framed windows known as Crittall Windows. The window frames can still be seen in the photo above, although the windows were changed to UPVC approximately 12 years ago.
To install our new German windows, complete with fly screens and motorised roller shutter the frames had to be removed and the openings modified using treated timber framing. When the windows finally arrived, they were installed swiftly and the building was then sealed after 6 months of boarded up openings. The theme for the project externally was Anthracite Grey, the famous RAL 7016 and White render with Silver Birch Grey cladding.
We waited a further month for our internal door sets from Germany, including Glass pocket doors and Glass bathroom door and a further month for our Bifold doors which came from Poland. In the meantime, Internally, refurbishment was taking place including modifications to the plumbing, heating and electrical systems with an abundance of electrical outlets and ample radiant heat from the existing boiler and the existing solar power energy system.
Bathroom
This photo (left) shows the first-floor extension under construction, which accommodates the enlarged bathroom and the vaulted ceiling bedroom. The rooflight has been strategically placed over the walk-in shower. This extension is highly insulated in excess of the current requirement
The ground floor shower room was made smaller with a stud partition with an opaque glass pocket door and modified drainage runs. The ceramic tiling was exceptionally well applied and the choice of tile works beautifully in this space both in terms of colour and size
The Ground Floor rear extension
It was placed on traditional concrete foundations with semi-engineering brickwork up to DPC and a pocket formed to take the steel corner post which would allow for floor to ceiling bi-fold doors on two sides
The steel frame was erected as planned and would subsequently be clad in rendered blockwork and UPVC cladding with Aluminium parapet capping.
Bathroom
The Result is a transformation to the external view – Scaffold gone, windows and doors in place, composite cladding, silicon rendering and composite decking 99% complete
