Large areas in all cases coverage per litre depends on the wood’s porosity and the painter’s technique:
Wood primer 9-15 sq metres (95-160 sq ft)
Primer 16 sq metres (170 sq ft)
Primer/undercoat 11 sq metres (120 sq ft)
Undercoat 11 sq metres (120 sq ft) Runny gloss or satin 17 sq metres (180 sqft)
Non-drip gloss or satin 13 sq metres (140 sq ft)
Runny emulsions 15 sq metres (160 sq ft) Non-drip emulsions 12 sq metres (130 sq ft)
Small areas – add up all the lengths of wood to be painted.
One sq metre is equivalent to:
• 16m (52 ft) of glazing bars
• 10-13m (33-43 ft) of window frame
• 6m (20 ft) of sill
• 10m (33 ft) of narrow skirting
• 3-6m (10-20 ft) of deep skirting