01225 683687
If you’ve got any questions you can call our friendly team who are waiting to help
If you’ve got any questions you can call our friendly team who are waiting to help
Sandstone Floor Cleaning · Bath & Wiltshire
York stone, indoor sandstone flagging, modern sandstone tiles. Highly porous, easily stained, often badly sealed. We clean sandstone properly, address the salt and damp issues that plague it, and seal it with a breathable product that protects without trapping moisture.
Sandstone has a different problem to every other stone
Sandstone is a sedimentary stone made of compacted sand grains held together by natural cements. The key thing to know: it’s the most porous of all the common floor stones. Water, oil, wine, coffee, salt, cleaning chemicals — all of it goes straight in if the stone isn’t sealed.
Indoor sandstone is most often York stone flags in country kitchens, conservatories and converted barns across Wiltshire. Modern sandstone tiles also appear in newer properties. What they all share is a hungry, thirsty surface that needs the right protection.
Two things complicate sandstone restoration: salt deposits (efflorescence — white powdery patches caused by moisture rising through the stone) and sealer choice. Get the wrong sealer on porous sandstone and you can trap moisture, accelerate efflorescence, and cause sealer failure within months. Get it right and the floor stays beautiful for years.
What we see in sandstone
Efflorescence. White powdery deposits, especially after damp weather. The stone is wicking moisture from below, which carries dissolved salts to the surface where they crystallise. We clean these off and address the underlying sealer issue.
Sealer failure. Cheap non-breathable sealer applied to porous stone fails within months — peels, flakes, leaves a patchy mess. We strip what’s left and start again with a proper product.
Deep staining. Sandstone absorbs spills aggressively. Old oil, wine and coffee stains can go right through the stone. We can lighten them significantly; sometimes we can remove them entirely.
Where indoor sandstone is found
Indoor sandstone is less common than limestone or travertine in this region, but it appears regularly in converted Wiltshire barns, country kitchen extensions, large conservatories, and some heritage properties where York stone flags were used inside as well as out.
The buyer profile is usually rural — farms, smallholdings, country properties around Westbury, Warminster, Marlborough, Bradford-on-Avon, Devizes, and the villages between.
These are floors that have often had no professional attention since they were laid. Restoration is rewarding because the difference is striking.
Our sandstone process
We assess the stone, the existing sealer, the moisture level, and any efflorescence. Fixed quote.
Particularly important for sandstone. We test the cleaning approach and the sealer on a small area first.
Specialist cleaner for sandstone, several passes, particular attention to absorbed staining.
If there’s salt deposit, we treat it. We then check moisture before sealing — wet sandstone seals badly.
An impregnating sealer that protects without trapping moisture. Multiple coats on hungry sandstone are normal.
Things that wreck sandstone
Sandstone’s porosity is its biggest feature and its biggest weakness.
On a porous stone without a damp-proof membrane, they trap moisture, cause blooming and fail fast.
Forces water deep into porous stone. Damages grout. Creates a worse mess than it cleans.
Bleaches sandstone unevenly, weakens the natural cements between grains, strips sealer.
Sandstone is the most absorbent floor stone. Oil, wine, anything dark — wipe immediately or it’s permanent.
Sealing damp sandstone traps the damp. White blooming and sealer failure follow within weeks.
Sandstone is thirsty. One coat often isn’t enough. Floor sucks the sealer in and the protection is patchy.
Sandstone questions we get every week
Efflorescence — salt deposits being pushed to the surface by moisture rising through the stone. It’s particularly common in sandstone because the stone is so porous. We can clean it off and apply a breathable sealer to slow it returning. The underlying moisture issue may need separate attention if it’s severe.
Yes, but it needs the right sealer and a vigilant household. Sandstone is unforgiving of spills — oil and wine especially. With a multi-coat impregnating sealer and a wipe-spills-immediately rule, it works beautifully. Without those, sandstone in a kitchen will stain.
Yes. Indoor and outdoor sandstone need different sealers and different cleaning approaches. Indoor stone doesn’t have to deal with frost or UV, but it does need to handle indoor cleaning chemicals. We don’t do outdoor patios — only indoor floors.
Often, yes — we use poultice systems that draw oil back out of the stone over several hours or days. The success depends on how long the oil has been there and how deep it’s penetrated. Old, deep oil stains may lighten significantly without fully disappearing. We’ll be honest about what we expect to achieve at the survey.
Because the stone absorbs the first coat almost immediately. A single coat protects the top fraction of a millimetre and not much else. Two or three coats build up a proper protective layer that handles spills and traffic. The cost is in the product and the time — but it’s what makes the difference between a sealer that lasts five years and one that fails in five months.
For most indoor sandstone, yes — we can use a sealer that allows same-day walk-on traffic. For some heavier sealer applications with multiple coats, we may recommend waiting overnight before heavy traffic. We’ll confirm at the time.
Get your quote
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We’re a small team and we usually pick up. If we miss you, leave a message and we’ll call you back.
01225 683687