External Oak Staircase-Balcony Severn
UK Timbersolution
£9300
Concrete Base Options for an External Oak Staircase or Balcony When building an external oak staircase or balcony, choosing the correct concrete foundation is essential for stability, drainage, and long-term appearance. Two common options are a full concrete plate or separate concrete pads . A concrete plate offers the strongest and most practical solution. For external staircases, the slab should be: Option no 1: at least 100–150 mm thick , reinforced with mesh. Option no 2: at least 600 mm thick , without mesh. See video below. Extend at least 300–400 mm beyond the footprint of the posts . T
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