How many metres of skirting board do you need?

Usually no — units sit flush against the wall. Subtract fitted furniture depth from perimeter or simply skip those wall sections.

Common heights: 7–10 cm modern, 12–15 cm traditional. Taller skirting suits high ceilings; measure existing boards if replacing to match door architraves.

Internal corners: mitre at 45° or scribe for uneven walls. External corners: mitre. Cheap alternative: square cuts with corner blocks — easier for DIY, less elegant.

Stairs need separate measurement along tread nosings and landings — not included in a simple rectangular room calculator. Add linear metres per flight manually.