solid stone with lime mortar, thick internal walls, timber ceilings. Solid-stone walls mean cable chasing is off the table — routing goes through skirting, floors and lofts.
If you own a stone cottage in Ystrad Mynach and need consumer unit upgrades, the right spec is usually not the most expensive one. On this stock the sensible answer is new earth rod with tested Ra reading — matched to the wiring generation, not a lift-and-shift from a new-build brochure.
That is the standard we quote to. Fixed price, honest survey, SPD retrofit (genuinely useful in rural exposure), and paperwork the next EICR won't question.
Solid-stone walls mean cable chasing is off the table — routing goes through skirting, floors and lofts.
Wiring generation on this stock is typically rewired 1990s–2010s; earthing arrangement often TT with an earth rod. On a stone cottage you should expect us to flag: TT earthing with an aged earth rod — measured Ra values often above the safe threshold; damp near the incoming supply because the meter sits in an old outhouse; no SPD, and rural supply overhead lines that see genuine lightning-strike risk.
Materials and methods we spec on stone cottage work: new earth rod with tested Ra reading; SPD retrofit (genuinely useful in rural exposure); surface-run steel conduit where wall-chasing isn't an option. Everything is priced on the quote — nothing added on invoice.
Focus on the outhouse or pantry, the consumer unit location, and the intended cable route. Usually 15–30 minutes on-site or a short photo set.
Priced against your stone cottage's specific construction, not a template. Route sketched, materials listed, no line-item surprises.
Diary planned for the access constraint that matters on this stock — solid-stone walls mean cable chasing is off the table — routing goes through skirting, floors and lofts.
NICEIC certificate, photo evidence of hidden work, Part P where applicable — all emailed the evening the job signs off.
From M4 J28 / J32 (about 12 miles south) the Ystrad Mynach area, stone cottage addresses cluster in specific streets — we know the layouts before we walk in, which shortens the survey and firms up the quote.
new earth rod with tested Ra reading; SPD retrofit (genuinely useful in rural exposure); surface-run steel conduit where wall-chasing isn't an option. All on the written quote.
Nine times out of ten yes. The existing rod is undersized or corroded. We measure Ra before and after and hand you the readings on paper.
Two things: TT earthing with an aged earth rod — measured Ra values often above the safe threshold, and the wiring generation — rewired 1990s–2010s. Both go on the quote, not the invoice.
Not unless the quote says so. On period stock in particular we route through floors, lofts and non-original plaster; cornices, dado rails and original panelling stay intact.
Common enough that we work on this stock most weeks. 1970s estates in Hengoed, traditional terraces in Nelson, and rural smallholdings towards Penpedairheol — the stone cottage is a recognisable slice of that mix.
Stone Cottage stock isn't confined to Ystrad Mynach — the same construction era shows up across Caerphilly and Bargoed. We consolidate diary days across the postcode.
Bottom line: stone cottage owners in Ystrad Mynach deserve a quote calibrated to pre-1900 construction, not a template. That's what we do, on every job.
Send the address, a photo of the outhouse or pantry and the consumer unit, and the make it safe against surge and lightning you're working towards. Written fixed quote back inside 24 hours, priced to the actual construction of your stone cottage.
