1) Cost Logic
Cost depends on stone type, damage type, and level of intervention. Start with a damage map of cracks, spalls, salts, biological growth, and lost joints. See the restoration cost guide.
2) Cleaning
Choose water, steam, micro-abrasion, poultice, or chemical methods by soil type and stone strength. Aggressive methods can scar the surface, so begin with a trial area and treat moisture sources first.
3) Repointing and Mortar
Cement-rich mortars can damage historic stone; lime-based mortars matched in strength, porosity, colour, and texture are usually preferred. Test mixes on site and state joint depth and mortar type in the estimate.
4) Patching, Dutchman Repairs, Replacement
Choose repair mortar, partial replacement, or full replacement by damage depth and structural role. List patches, partial repairs, and replacements on separate lines.
5) Stone Sourcing
Matching historic stone can be hard. Allow for analysis, haulage, cutting, wastage, and lead time—late stone extends scaffolding hire.
6) Scaffolding and Temporary Works
Include erection, hire period, dismantling, and weather protection; lime work is sensitive to frost and rain. Confirm extension terms in bids.
7) Analysis, Design, Approvals
Survey, material analysis, and board approval sit alongside the works budget. Hidden findings on site justify a contingency. Our restoration team manages these stages together.
8) Conclusion
Damage mapping, trials, compatible mortar, and itemised estimates keep cost under control. For a preliminary review, contact us; see also consultancy.