Costs: Industrial doors | Features

Industrial doors
Specification options	Capital costs £/m2	Net present value for 60 years £/m2
Roller shutter doors
3 × 3 m. Manually operated. Steel laths Z 275 g/m2. Finish: PVC (plastisol) coating, 200 microns	1,210	4,000
5 × 5 m. Electronically operated. Steel laths Z 275 g/m2. Finish: PVC (plastisol) coating, 200 microns	2,720	8,410
Sectional overhead doors
4 × 4 m. Chain operated. Steel sections Z 275 g/m2. Finish: PVC (plastisol) coating, 200 microns	1,560	4,720
4 × 4 m. Chain operated. Steel sections Z 275/m2. Finish PVF2 coating, 25 microns	1,620	5,030
4 × 4 m. Electronically operated. Steel sections Z 275 g/m2. Finish: PVC (plastisol) coating, 200 microns	2,010	6,320
4 × 4 m. Electronically operated. Mill-finished aluminium, twin skinned, insulated > 40 mm thick	2,200	6,300
Hand-operated folding shutter doors
5 m high × 8 m wide. Galvanized steel sections Z 275 g/m	3,170	10,250

Table notes
Costs are for installation of doors only, ancillary work such as electrical supplies and preparation of surround not included. Through life costs include replacement, annual servicing, minor repairs, and recoating of the finish.
Steel doors: Steel to BS EN 10326 = 0.4 mm thick, all galvanized to Z 275 g/m2 minimum. Aluminium to BE EN 485 = 0.6 mm thick. Sectional steel doors twin skinned, insulated, minimum 40 mm thick.
Expected service lives are 20 years for all doors and relate to 20,000 operational cycles with two opening and closing cycles a day on average.
A discount rate of 3.5% is used to calculate net present values. Door types are not directly comparable as sizes vary. 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 information email peter.mayer@buildinglifeplans.com or telephone 020-7204 2441.