We offer a number of service from a simple re-pointing, repair and renovation of stone or plaster features, to a complete restoration. We have a talent pool of experienced, expert and passionate craftsmen ready to carry out the wok.
Our ethos is to use the same methods, tools and materials as the original builders and craftsmen. What they did, we can do, like for like. If required we can work with all the relevant bodies on your behalf as part of our service.
With our constant ongoing extensive research programme to ensure that materials used throughout the restoration, preserve the character & integrity of the building enables us to deliver the restoration property owners demand.
Restoring and renovating Grade I and II listed period buildings in the UK requires careful planning, specialist skills, and adherence to heritage guidelines.
Below is a breakdown of key considerations for re-pointing, repair, and renovation of stone and plaster features in historic buildings.
Re-pointing Historic Masonry
Re-pointing is the process of renewing mortar joints between bricks or stones. In historic buildings, inappropriate re-pointing can cause significant damage.
Key Considerations:
- Lime Mortar Usage: Traditional lime mortar is essential for breathability and flexibility, preventing moisture trapping that leads to decay.
- Mortar Matching: Analysis of original mortar (color, texture, and composition) ensures compatibility.
- Joint Profile & Finish: The original style of pointing (flush, recessed, or tuck pointing) must be matched.
Hand Tools Over Power Tools: Mechanical tools can cause irreversible damage to historic stonework.
Common Issues:
- Over-pointing with cement-based mortar, which can trap moisture and accelerate stone decay.
- Erosion from poor-quality repairs or weathering.
Stone Repair and Restoration
Stone elements such as façades, window surrounds, and decorative features often suffer from weathering, pollution, or previous inappropriate repairs.
Key Restoration Methods:
- Stone Indenting: Replacing damaged sections with carefully matched new stone.
- Lithomex or Lime-Based Repair Mortars: Used for small-scale repairs to match existing stone.
Cleaning Methods:
- DOFF (steam cleaning system): Removes organic growth without damage.
- JOS/TORC (low-pressure vortex system): Gently cleans delicate stonework.
- Avoiding Chemical Cleaners: Harsh chemicals can damage historic patina and stone integrity.
Common Issues:
- Incorrect stone choice leading to differential weathering.
- Harsh cleaning methods removing protective stone layers.
Plasterwork Repair and Conservation
Period buildings often have decorative plaster ceilings, cornices, and wall mouldings.
Key Restoration Techniques:
- Lime Plaster Repairs: Traditional three-coat lime plaster allows the building to breathe.
- Lath & Plaster Replacement: Original lath-and-plaster ceilings and walls should be retained or replaced using riven laths and lime plaster.
- Ornamental Moulding Restoration:
- Missing sections can be hand-run in situ or cast from moulds taken from existing profiles.
- Fine Repairs: Use of natural fibres, like horsehair, to strengthen the mix.
Common Issues:
- Use of modern gypsum plaster, which lacks breathability and can cause damp issues.
- Over-repairing, leading to loss of original details.
Planning & Regulations for Listed Buildings
- Consent Required: Any alterations, including re-pointing, stone repair, or plaster restoration, require Listed Building Consent from the local authority.
- Specialist Contractors: Work must be carried out by specialists with experience in historic buildings.
- Building Recording & Surveys: Before restoration, detailed condition surveys and documentation are often required.
Conclusion
When working on Grade I or II listed buildings, the key is minimal intervention with maximum conservation.
To achieve this we use traditional materials and methods, along with careful planning and expert input, ensuring that historic character and integrity are preserved for future generations.