Costed: Flooring

Words:
Cosmas Kamasho

Cosmas Kamasho, head of data management and BIM at RICS, on flooring costs

Floor finishes include all applied, in-situ and preformed finishes which provide a functional and/or decorative surface. 

In-situ finishes are laid in a fluid state and allowed to dry and set to provide a seamless firm surface. Applied finishes are supplied preformed in tile or sheet form and laid to a suitable base bonded with an appropriate agent. Applied finishes such as ceramic tiles tend to be highly resistant to chemicals and heat.

Several factors determine the choice of finish, including function or usage of the space, aesthetic requirements, degree of comfort required, the type of base and cost. 

Floors that require greater impact resistance – such as factories – may need a special coat or topping. This usually comes as a screed or resilient resin. Floors carrying chemical and food processing plants may also need an extra coat for sanitary reasons and/or to protect the structure from corrosive materials. Wet spaces require damp proofing and in most cases, non-slip finishes like vinyl and glazed tiles. 

At the same time, special paints – such as intumescent – can be applied to floors to improve fire resistance. Other special finishes include antistatic surfaces, spark free floors and even conductive properties. 

Impact sounds can be considerably reduced by applying a soft, flexible finish like carpet. A floating layer effectively provides a sound buffer while sprung floors absorb shocks in sport and performance halls to provide comfort. 

Some finishes are chosen for their texture, colour and/or aesthetics. A transparent finish can protect or reveal underlying features. 

However, it usually comes down to cost and to some extent the life cycle costs of the component. Although the capital cost of floor finishes may be a fairly small proportion of the total cost of the facility, maintenance costs can be significant. For example, although floor finishes account for just under 4% of the construction cost on a typical sports facility, the cleaning bill can reach 25% of the occupancy cost over 20 years.


These guide prices, as of 1Q2017, are from the BCIS of RICS. They are based on a medium-sized residential project for products in the low to upper- middle specification range. They do not include contractor’s preliminaries, overheads and profit margin. They are based on the BCIS ORDB Schedule of Rates Service (service.bcis.co.uk/bcisonline).

In situ screed and floor finishes; laid leveI - Range £

Latex compound on existing subbase; over 300mm wide: 3 mm thick £9.80-11.50m2

Cement and sand (1:3) trowelled beds; 100mm thick £29.40-35.30m2

Granolithic paving (1:2.5) trowelled finish; 38mm thick £19.10-23.00m2

Epoxy finish to primed surface: 1.5mm-2mm thick, one coat £35.20-42.30m2
5mm-6mm thick, two coats £63.20-76.80m2

Resin floor paint: 2 coats for industrial floors £6.50-76.80m2

3 part system; polyurethane screed, prime and base coat resin £35.70-43.90m2

Anti static epoxy flooring, including priming  £67.80-80.20m2


Sheet/board flooring    

Chipboard flooring; tongued & grooved joints: 18mm-22mm thick £14.90-20.30m2

Wrought softwood tongued and grooved boarding 19mm thick £40.40-48.50m2

Wrought softwood tongued and grooved boarding 25mm thick £43.00-51.70m2

Softwood skirting, gloss paint finish £17.90-21.40m2

MDF skirting, gloss paint finish £14.00-16.80m2

Wrought hardwood tongued and grooved boarding 22mm thick £118.50-142.20m2

Hardwood skirting, stained finish £27.30-32.80m2

Sports quality flooring; T&G plywood 22mm thick on softwood battens and crumb rubber cradles £141.80-170.10m2

Sports quality flooring; sprung block floor, court markings, sand and seal £97.70-117.20m2


Rigid tile/slab block flooring

Quarry tiles: 10mm bed: jointing & pointing in cement mortar (1:3)  £50.20-60.20m2

Porcelain tiles: 10mm bed: jointing & pointing in cement mortar (1:3) £47.50-57.00m2

Porcelain tiles (anti slip): 10mm bed: jointing and pointing in cement mortar (1:3) £53.40-64.10m2

Porcelain tiles (designer): 10mm bed: jointing and pointing in cement mortar (1:3) £71.20-85.50m2

Terrazzo tiles; hydraulically pressed, mechanically vibrated, steam cured; to floors on concrete base (by others); 28mm thick £68.20-81.80m2

Marble tiles; 20 mm thick, marble aggregates in resin agent; fixed with adhesive; close butt joints; straight both ways £214.70-256.50m2

Wood block; 10mm thick, finished with 2 coats heavy duty oil £111.00-133.20m2

Reconstructed stone paving slabs, 40mm thick; spot bedding in cement lime mortar (1:1:6)  £84.50-101.40m2


Flexible tiling; welded sheet or butt joint tiles; adhesive fixing    

Vinyl tiles flooring;  standard tiles 2mm thick £24.20-29.00m2

Vinyl safety flooring; 2mm thick £48.20-57.80m2

Granite tiles flooring; 2mm thick £33.00-39.70m2

Granite sheet flooring; 2mm thick £30.80-37.00m2

Linoleum tile flooring; 2.5mm thick £41.00-49.30m2

Linoleum sheet flooring; 2.5mm thick £36.20-43.50m2

Rubber floor tiles; 4mm thick £66.60-79.90m2


Carpet; including underlay, edge grippers    

Heavy domestic duty £47.10-55.50m2

Heavy domestic duty; treads and risers £52.90-63.50m2

Heavy contract duty £37.30-44.70m2


Access floors    

Raised access floors: including 600 x 600mm steel encased particle boards on height adjustable pedestals 135mm - 210mm  Light/medium grade duty £42.90-51.50m2

Heavy grade duty 85.10-102.20m2


Common floor coverings bonded-access floor panels    

Heavy duty fully flexible vinyl/anti static £30.80-42.60m2

Needle punch carpet 27.00-32.40m2


Under floor heating    

Electric underfloor heating system; 50mm insulation,  150 watts per m2, 20m2 single rooms per room £837.00-1,004.30

LTHW system with pipework at 300mm centres for 20m2 single rooms  per room £1,031.50-1,238.80

Latest

With retail flagging how can we bring life back into towns? Architects, this is your chance to step up

With retail flagging how can we bring life back into towns?

Gundry + Ducker's innovative design for the RIBA Marketplace stand at this year's Futurebuild event is made from Rockwool insulation and Rockpanel cladding for a restful, reading room feel

RIBA hub design at Futurebuild keeps things quiet

As cuts in public services bite ever deeper it’s down to local people to save and reinvent neglected or redundant structures. Architects play a crucial role

Local activists need public-spirited architects

National Museum, Tartu, Estonia

National Museum, Tartu, Estonia

Impressive productivity gains are offset by rising payroll costs in the RIBA Business Benchmarking Survey  this year

Revenues are rising twice as fast as staff numbers