We provide conservation-grade lime plastering across Merthyr Tydfil, Mid Glamorgan. Whether you are repairing damp internal walls in a cob and clom in the west property, stripping failed cement render, or repointing stonework, our craftsmen work only in lime — the material Merthyr Tydfil's period buildings were originally constructed with.
Merthyr Tydfil's building stock reflects the history of Wales, and thick random rubble walls with earth cores must be able to breathe. Applying gypsum or cement to these walls traps moisture; lime lets it evaporate freely, protecting the fabric of the building for decades.
Around Merthyr Tydfil you will find stone longhouses alongside later Victorian chapel-era terraces. Both were built with lime, and both suffer when a modern impermeable finish is applied over the top — the moisture has to go somewhere, and it goes into the masonry and the timbers.
Lime is flexible, breathable and self-healing. On Merthyr Tydfil properties built from cob and clom in the west, it moves with the building instead of cracking away from it, and it protects the masonry rather than the other way round.
Every Merthyr Tydfil job begins with diagnosis: identifying where moisture is entering before any plaster goes on. We then remove failed material, prepare the cob and clom in the west, and build the lime up in coats, allowing each one to cure before the next.
Because thick random rubble walls with earth cores must be able to breathe, Merthyr Tydfil throws up a particular set of problems. These are representative examples of how we resolve them in lime.
converted stone barn — Consented repairs to a listed converted stone barn in Mid Glamorgan. Sample panels were prepared for the conservation officer, mortar analysis informed the mix, and the historic surface was conserved and patched rather than replaced wholesale.
chapel-era terrace — Salt-contaminated plaster around a reopened fireplace in a chapel-era terrace in Merthyr Tydfil. We removed the affected plaster, applied a salt-tolerant lime build-up and finished flush with the surrounding original work.
clom-walled smallholding — Blown gypsum plaster and tide marks on the ground floor of a clom-walled smallholding in Mid Glamorgan. We hacked off the gypsum, applied a haired lime base coat and a lime putty finish, and specified clay paint so the wall could keep drying.
Yes. We regularly work on listed and conservation-area properties across Mid Glamorgan and can supply mix specifications and sample panels for Merthyr Tydfil conservation officers where consent is required.
Yes — stripping failed cement render and replacing it with a breathable lime render is one of the most common jobs we carry out in Merthyr Tydfil. It is usually the fastest way to resolve persistent damp in a solid-wall building.
Yes. We take samples of the surviving mortar or plaster from the local rubble stone and slate first, then match aggregate, colour and texture so the repair blends into the original rather than patching over it.
We do. Lime repointing is a large part of our Merthyr Tydfil workload — raking out hard cement pointing and replacing it with a softer, sacrificial lime mortar that protects the masonry face instead of eroding it.
Our lime plastering, render and pointing teams also cover these towns and cities close to Merthyr Tydfil in Mid Glamorgan and the wider Wales area.
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