Custom House south wall
Hard cement pointing was removed in stages and replaced with lime mortar matched by aggregate and vapour behaviour rather than colour alone.

125 · Heritage masonry / conservation contracting
Repair the wall without deleting the wall's age.
Stonebound Restoration is a fictional specialist contractor repairing historic brick, stone and lime-plaster buildings. Work begins with material compatibility and moisture behaviour, not the promise of a perfectly uniform finish.
Results ledger
About / charter
Stonebound Restoration is a fictional specialist contractor repairing historic brick, stone and lime-plaster buildings. Work begins with material compatibility and moisture behaviour, not the promise of a perfectly uniform finish.
Native unit
repair elevation
Evidence
mortar sample, moisture reading, trial panel, photographic record and completion note
Operating promise
Repair the wall without deleting the wall's age.
Work register
Hard cement pointing was removed in stages and replaced with lime mortar matched by aggregate and vapour behaviour rather than colour alone.
Twelve failed sandstone corners were cut back and repaired with hand-tooled indents while stable weathering was retained.
Three low-pressure cleaning methods were tested before the client accepted a deliberately uneven but safer result.
Capabilities
Lime mortar repointing is scoped through the repair elevation, with mortar sample, moisture reading, trial panel, photographic record and completion note. The boundary, exclusions and handover evidence are stated before work begins.
Stone repair & indents is scoped through the repair elevation, with mortar sample, moisture reading, trial panel, photographic record and completion note. Capacity, constraints and decision ownership stay visible from intake to closeout.
Traditional plaster is scoped through the repair elevation, with mortar sample, moisture reading, trial panel, photographic record and completion note. The boundary, exclusions and handover evidence are stated before work begins.
Facade cleaning trials is scoped through the repair elevation, with mortar sample, moisture reading, trial panel, photographic record and completion note. Capacity, constraints and decision ownership stay visible from intake to closeout.
People
Conservation contractor
Ruth Engelbrecht leads conservation contractor and owns the decisions that touch each repair elevation. The role is described by responsibility, not decorative biography.
Master mason
Mandla Khumalo leads master mason and owns the decisions that touch each repair elevation. The role is described by responsibility, not decorative biography.
Materials recorder
Eva Naidoo leads materials recorder and owns the decisions that touch each repair elevation. The role is described by responsibility, not decorative biography.
Process
Gate 1
Read the existing fabric is the entry control point for a repair elevation. The team records mortar sample, moisture reading, trial panel, photographic record and completion note so the next decision is made from an explicit state, not memory or assumption.
Gate 2
Make a trial panel is the next control point for a repair elevation. The team records mortar sample, moisture reading, trial panel, photographic record and completion note so the next decision is made from an explicit state, not memory or assumption.
Gate 3
Repair the minimum necessary is the next control point for a repair elevation. The team records mortar sample, moisture reading, trial panel, photographic record and completion note so the next decision is made from an explicit state, not memory or assumption.
Gate 4
Record what remains is the next control point for a repair elevation. The team records mortar sample, moisture reading, trial panel, photographic record and completion note so the next decision is made from an explicit state, not memory or assumption.
Insights / detail
Note 1
Hard mortar can damage soft historic brick. A working note from Stonebound Restoration on the decisions hidden inside heritage masonry / conservation contracting. It connects the claim back to repair elevation and names where professional judgement or uncertainty remains.
Note 2
A clean facade is not necessarily a conserved facade. A working note from Stonebound Restoration on the decisions hidden inside heritage masonry / conservation contracting. It connects the claim back to mortar sample, moisture reading, trial panel, photographic record and completion note and names where professional judgement or uncertainty remains.
Note 3
Why trial panels belong in the contract programme. A working note from Stonebound Restoration on the decisions hidden inside heritage masonry / conservation contracting. It connects the claim back to mortar sample, moisture reading, trial panel, photographic record and completion note and names where professional judgement or uncertainty remains.
Questions / limits
That is usually the wrong conservation objective. Cleaning and repair aim for stability and legibility, not visual erasure of age.
Where compatible with the original masonry, lime can accommodate movement and moisture in ways dense cement mortars may not.
Yes when traditional masonry skills solve a real material problem, but the core practice is existing historic fabric.
Contact