Tile selection
Premium porcelain, mosaics or natural stone can add £25–£100/m² through higher purchase prices, specialist cutting and slower fixing.
Substrate condition
Local levelling, patch repairs or additional preparation typically adds £8–£25/m² before tiling commences.
Format and pattern
Large formats, herringbone layouts and tight-joint modular patterns commonly increase fixing costs by 15–35%.
Access and height
Tiling above normal working height or within confined areas can add £10–£25/m² for access equipment and reduced productivity.
Openings and fittings
Numerous sockets, pipe penetrations, niches and returns can raise the installed rate by 15–40% due to cutting and setting-out time.
Waterproofing
Proprietary tanking systems to showers and wet zones generally add £20–£40/m², depending on corners, junctions and system specification.