What it costs: timber internal doors | News

Internal domestic doors
	Capital cost (£/door)	Net present value for 60 years (£/door)	Risk of damage
Hollow core doors: £40-140
Hollow core door, with timber edging and blocking for hardware, factory primed	265	560	Low
Hollow core door, with timber edging and blocking for hardware, factory finished	245	600	Moderate
Solid core doors : £100-300
Solid core door, particleboard to BS EN 312 grade P3, softwood edging	295	490	Low
Solid core door, particleboard to BS EN 312 grade P3, softwood edging, real wood veneer 2mm thick	325	580	Moderate
Solid timber doors - £200-500+
Four panel softwood door. European Redwood to BS EN 942 Class J30, D3 adhesive to BS EN 204 assembled to BS 1186-2	460	630	Low
Four panel hardwood door to BS EN 942 Class J2 D3 adhesive to BS EN 204, assembled to BS 1186-2 For varnished finish	560	710	Moderate
An internal door assembly correctly specified for expected use in a dry internal environment should have an indefinite life with regular servicing and redecoration. However, usage and environments change and accidents happen. The whole-life cost models are based on a risk of damage as well as planned redecoration every 10 years, with an allowance for servicing, replacement of hardware and minor repairs. A discount rate of 3.5% is used to calculate net present values. The door cost range is indicative for 2040 x 626-826 x 40mm door; lowest price for basic door unfinished, upper price for real veneer finish. Capital costs include installation; frame and linings; hardware; decoration. BLP provides latent defect warranties for buildings: www.blpinsurance.com. Email peter.mayer@blpinsurance.com or call 020 7204 2450