Category Archives: Polished Concrete Floor

Week 26, Day 3

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Week 26, Day 3:

  • The south roof was over-boarded with 11mm OSB to provide enough thickness to firmly fix the zinc roof retaining clips to
    • The north roof has 18mm OSB whereas the south roof only had the 11mm OSB as the upper face of the Structural Insulated Panel
  • Still some discussions ongoing about the precise specification of the “structured separation layer” which needs to go between the roof boards and the zinc covering – in the meantime a basic membrane has been installed to keep the rain off and give the boards chance to dry out as much as possible before the zinc goes on
  • The concrete flooring team came back to cut the expansion joints into the concrete
  • The “missing” window glass for the top floor has been located at the Internorm factory in Austria and is now being shipped to the UK, so that should be installed by the end of next week
Week 26, Day 3

Week 26, Day 3

Wider view from main camera location

Wider view from main camera location

Concrete floor after power-floating

Concrete floor after power-floating

While the floor looks pretty good already, this is just the “rough” finish. After it’s had chance to cure for about 4 weeks it will get diamond-polished (so around the middle of May).

The paler circular disk is one of the electrical floor boxes, which will get a brushed stainless steel cover. (There’s another box barely visible further into the room.)

Week 26, Day 2

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Week 26, Day 2:

Week 26, Day 2

Week 26, Day 2

Doesn’t look any different but there’s now concrete on the floor.

Concrete truck and pump

Concrete mixer truck and small concrete pump

There’s a dye added to the concrete (the Pewter colour from Hatcrete) – it went into the concrete mixer truck once that arrived on-site so the installation team could control the colour mix.

Concrete pump delivery pipe

Concrete pump delivery pipe

Almost finished - a third concrete delivery required to finish off

Almost finished – a third concrete delivery required to fill the last section

While the concrete was laid by mid-morning, the team spent the rest of the day (and most of the evening) power-float finishing the surface as it started to cure. Expansion joints get cut tomorrow then the diamond polishing will get done in a few weeks, once it has hardened.

Concrete gives off heat as it cures and by the end of the day the house was really very warm, despite having large openings on the second floor and no cavity wall insulation yet. That’s what you get with 250mm of floor insulation and triple-glazed windows, I guess.