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Site Progress - Garden View House

  • Matthew Holmes
  • Jun 14
  • 2 min read

It is good to see our Garden View House in the Cotswolds taking shape on site. The existing house is situated on an irregular corner plot, which means that most of the garden is not visible from the main living and dining spaces. The extension will form a new kitchen including an area for relaxing that overlooks the garden and maximises the views of the garden within the house.

Cotswolds house extension under construction

The large opening will connect the kitchen with the view of the garden, and it will feature triple glazed windows and doors with level thresholds to maximise the uninterrupted views.

Cotswolds extension under construction with a large corner opening.

A corner post will form the junction between the sliding doors, and a generous picture window that maximise the views of the garden. The corner post will be hidden behind the insulation and the aluminium so that it appears as a part of the glazing. The insulation to the corner post will be a high performing Aerogel, which allows it to be as thin as possible, minimising the frame, and maximising the uninterrupted glazed areas that overlook the garden.

Marmox Thermoblock insulated block at floor junction during construction

The course of blue insulated blocks on the inner leaf in the photograph above are Marmox Thermoblocks. These insulated blocks reduce thermal bridging through the inner leaf of the cavity wall, which is traditionally a route where heat can escape from the building through the gap at the junction with the foundation. The Marmox Thermoblocks are part of a detail that exceeds building regulations by providing continuous insulation at the critical junctions.

Flat roof under construction with Marmox Thermoblock parapet wall

The insulated blocks are also installed in the inner leaf to the parapet wall as this is another potential gap in the insulation. The design utilises these construction details, combined with additional insulation and triple glazing to maximise the glazed areas to the garden, whilst not compromising on internal thermal comfort. The main house is located to the South of the extension, and it will naturally shade the extension and reduce overheating. A roof lantern will provide top light adjacent to the island unit in the kitchen, and it will also allow light to reach deeper into the existing home.


It is good to see the project taking shape and we look forward to the completed project later this year.


Project Team

Architect - Holmes Architects Contractor - NJN Design & Build Structural Engineer - Milnes Associates

Surveyor - Bury Associates

Glazing - Renka U-values (lower is better)

Walls - 0.16W/m²K Roof - 0.15W/m²K

Floor - 0.15W/m²K

Windows - 1.1W/m²K

Doors - 1.1W/m²K

Rooflight - 1.4W/m²K




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