Costs: Coated steel claddings | Features

Steel cladding

Specification options Based on mild steel sheet minimum	Capital cost £/m2	Net present value for 60 years £/ m2	Repainting period
thickness 0.7 mm; hot–dip galvanized to BS EN 10327,
275 g/m2 zinc coating weight
PVC (plastisol) coating, 200 microns nominal thickness.	24	48	10–30
PVC (plastisol) coating, 120 microns nominal thickness.	23	49	10–25
PVDF or PVF2 (polyvinylidene fluoride) coating, minimum 25 microns nominal thickness.	22	54	10–15
Polyester-based coating, minimum 25 microns nominal thickness.	19	53	5–10
Polyurethane-based coating, minimum 50 microns nominal thickness.	22	48	15–25
Table notes
Costs include cleaning, maintenance, recoating and repairs. Cost and frequency of maintenance are generic and are based on 1000 m2 of simple cladding. Repainting is modelled at an average of the range given above. The model assumes the steel cladding is not replaced during the 60 year period.
A discount rate of 3.5% is used to calculate net present values.
A cost analysis based on project specific information is essential for a realistic best value appraisal.
Further information
Building LifePlans provide latent defects warranty for buildings.www.componentlife.com for building component durability information.
For more details, email peter.mayer@buildinglifeplans.com or 020-7204 2441.