Costs: Moisture damage in timber floorings | Features

Specification options
(an allowance for surface protection is included in the capital costs)	Capital costs £/m²	Net present value for 60 years £/m²	Design life years
Particleboard
Particleboard wood chipboard to BS EN 312 Type P5	8.4	50	60
Particleboard wood chipboard to BS EN 312 Type P5, 22 mm thick	9.7	51	60
Particleboard wood chipboard to BS EN 312 Type P5, with protective plastics peel-off layer	8.9	45	60
Particleboard wood chipboard to BS EN 312 Type P5, with thermosetting resin and kraft paper weather-proof surface	8.8	37	60
Plywood
Standard grade marine plywood to BS 1088-1, square edged, suitable for use when exposed to regular wetting or permanent exposure to water: Hazard Classes 4 or 5 in BS EN 335-3	18.5	50	60
Plywood to BS EN 636-3, suitable for use in unprotected external conditions: Hazard Class 3 to BS EN 335-3	16.5	54	60
Plywood to BS EN 636–2	15.3	59	60