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Brick rear extension cantilevered over folding glass doors that open the corner of the room to the patio

Southfleet

A cantilevered roof structure that was always going to be looked at, so it had to be built as a finished piece rather than something to be boarded over.

Most structural carpentry is covered up the week after it goes in. This one stays visible, which changes how you work: every fixing, every junction and every face of the timber is part of the finish, and there is nowhere to hide a cut that is a millimetre out.

Alongside it, forming the openings for the side glazing. Large glass is unforgiving. The opening has to be square and true or the units will not sit, and the structure around it has to carry the load without any movement once the glass is in.

In progress

How it was built

Photographs from the job itself. The finished rooms are further down, but this is the part that decides whether they line up.

  1. Steel beams and posts carrying timber joists and boarding over the doors, with a scaffold tower beside01

    The steel frame carrying the cantilevered roof, joists and deck boarded over.

  2. Steel beams lifted into position beside a hoist at the corner of the house02

    Steel being lifted into position at the corner of the house.

  3. Magnetic drill and impact driver on a galvanised steel beam03

    Drilling the steel on site for the fixings.

  4. Opening in the house wall held up on props with a steel beam above while the new structure goes in04

    The wall opened up and propped, steel in above.

  5. Brick extension walls built up at the back of the house behind site fencing05

    The brickwork up, with the opening left for the glazing.

  6. Corner of the brick extension where the roof cantilevers out over the opening06

    The cantilevered corner, brick carried out over the opening.

Finished

  • Corner glazing joint looking out to French doors and a bench, with a reclaimed timber wall inside
    The side glazing meeting the roof glass, with a reclaimed timber wall inside.
  • Roof lantern above a herringbone floor leading to a reclaimed timber wall
    The rooflight over the new extension, herringbone floor below.
  • Open plan kitchen and dining area with a rooflight and folding doors open to the garden
    The extension opening into the kitchen, doors open to the garden.
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