Flint selection
Tight control of colour, size and knapping can add £50–£180/m² through premium material and increased sorting time.
Coursing quality
Regular coursing and tightly controlled joint widths typically increase the walling rate by 15–30%.
Mortar specification
Bespoke lime mortar, pigments and sample-panel matching can add £20–£50/m².
Corners and openings
Quoins, reveals, arches and short returns commonly increase the affected elevation rate by 10–25%.
Backing and restraint
A separate masonry backing, stainless-steel ties and cavity accessories can add £45–£100/m² where required.
Access and logistics
Scaffold adaptations, limited storage and repeated handling can increase rates by 8–20%.