Stonemason and Masonry Restoration Insurance

Nothing protects a stonemason more than a comprehensive condition record made before any work starts, and almost nobody makes one that is good enough.

The fabric you are called to is weathered, cracked, spalled, patched and moving. Mortar joints have opened, iron cramps have rusted and burst the stone around them, and somebody has repaired it in cement at some point in the last sixty years. Once scaffolding is up and work has begun, nobody can distinguish between what was already there and what happened on your watch. The client, the architect and the diocese all see the building afterwards.

So the record needs to be more than a handful of general photographs. Elevation by elevation, with position references, close shots of every area of existing damage, notes of anything loose or at risk, and the architect's or conservation officer's agreement on the extent of defect where there is one. Where the work exposes materially worse condition than anybody expected, stop and document it in writing before continuing, because an opened up wall that turns out to be hollow is a change in scope and a change in risk at the same time.

On heritage masonry the decisions about materials matter as much as the workmanship, and they are advisory rather than physical.

Which mortar mix, which lime, which stone, whether to replace or to piece in, whether to clean at all and by what method, and whether to remove existing cement repairs are all judgements with long consequences. Too hard a mortar and the stone wears instead of the joint. The wrong stone and the repair weathers differently and stands out for a century. An aggressive clean and the surface is lost permanently. None of these shows up as damage this year; they show up slowly, and the claim arrives later as a failed repair.

So where you specify as well as execute, which is normal on restoration work, the specification is professional advice and should be insured as such. Keep the reasoning: mortar analysis where it was done, the stone source and why it was chosen, trials and sample panels with the approvals recorded, and the architect's instruction where the decision was theirs. On consented work the approvals file is also your defence that the method was agreed rather than chosen unilaterally.

The serious claims against a masonry employer are not usually accidents. They are disease claims arriving decades later.

Cutting, dressing, grinding and chasing stone generates respirable crystalline silica, and silicosis has a long latency. A claim can arrive thirty years after the exposure, against a business that has changed hands, from somebody whose records nobody kept. Hand arm vibration from percussive tools is the same shape of problem. Employers' liability responds on the policy in force when the exposure occurred, which is why continuity of cover going back decades matters in this trade in a way it does not in most.

Practically that means two things. Control the exposure now: water suppression or on-tool extraction rather than dry cutting, respiratory protection with face fit testing rather than a dust mask from the van, health surveillance for anybody regularly cutting, and vibration exposure tracked rather than assumed. And keep the records: old employers' liability certificates, who worked where and when, and what controls were in place. Those documents are what defend a claim that arrives in 2050.

An ordinary scaffold against an ordinary building is routine. Against decayed masonry it is a structural question.

Independent scaffolds need tying, and the ties go into the building. On friable stone, perished mortar, rubble filled walls or a facade that is already delaminating, a tie may not hold, and either the scaffold moves or the masonry comes away with it. Both are serious: one is a collapse with people on it, the other is damage to the fabric you were employed to conserve. The same applies to loading out stone on a scaffold near an old parapet.

Which makes the tie arrangement part of the conservation conversation rather than a scaffolder's detail. Tie positions agreed with the architect, tested rather than assumed on questionable fabric, alternative arrangements such as buttressed or tied-through scaffolds where the facade cannot take it, and the loading limits stated for materials. Where a scaffolding subcontractor proposes ties into fabric you know is unsound, that is your objection to make, because the damage will be attributed to the masonry contractor.

Listed fabric reinstatement is the question that decides this one. We are an FCA regulated broker and will not tell you we are the best choice. These are the questions that decide it.