Greater London · England
Regrouting in Harrow
Tiled areas in Harrow need attention? We remove the old material, prepare the joints and seal them properly.
- Crumbling grout between the tiles
- Greasy, stained grout behind the hob
- Good tiles let down by tired grout
Regrouting for homes and businesses in Harrow
Changing the grout colour is a simple way to update tiles. Light grout can go darker to hide marks, or the other way round. Tell us what you have in mind when you ask for a quote. We work on shower walls, kitchen splashbacks and tiled floors, and common reasons people get in touch are discoloured grout on otherwise sound tiles and old grout in a dated colour.
London’s water is hard, so limescale builds up along sealant lines, in grout and on fittings. In Harrow, regrouting is as much about a room looking cared for as about keeping water out.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or email us.
- Where
- Harrow (HA2, HA1, UB5, HA3)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Do you need regrouting in Harrow?
Grout is porous, so water, soap and grime soak into it. Over time it stains, softens and starts to crumble and showers that get daily use suffer most.
People usually contact us when they notice one of these:
- Old grout in a dated colour
- Corners filled with grout instead of silicone
- Splashback grout that has darkened
- Shower grout that has worn away
Schools such as Whitmore High School are buildings too, and we reseal washrooms and kitchens in schools and businesses as well as homes.
Comparing quotes
- What insurance they hold
- Whether they seal over old material or remove it
- How the surfaces are prepared before sealing
- Which sealant they’ll use, and why
How it works
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours, or longer for a fully tiled room. In Harrow, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- Every tile area is checked for hollow or loose tiles first.
- We rake out the grout evenly, protecting the tile edges.
- The joints are vacuumed clean.
- New grout is pressed into the joints and the tiles are cleaned.
- We finish with silicone in the moving joints.
How to prepare
- Let us know about parking restrictions
- Mention any sign-in or site rules at work premises
- Try not to wet indoor joints just before the visit
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.
Advice
Looking after it afterwards
To keep the joints looking good and working properly:
- Use a soft brush rather than a wire one
- Use gentle cleaners on grout
- Avoid neat bleach and strong acid descalers on grout
- Wipe water off the walls when you’re done
Check the corner silicone now and then. It’s the part that moves, so it’s generally the first thing to need attention.
Cracked grout doesn’t stay cracked for long. Water gets in behind and the tiles can start to loosen, so regrouting early can save a retile.
Your questions about regrouting in Harrow
Is parking an issue for regrouting in Harrow?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Do you work in hotels near Harrow?
Yes, we work for hotels as well as homes and businesses. A room-by-room programme keeps most rooms in use while the work goes on.
How long does the job take?
Typically it takes anything from a few hours to a full day, depending on the area. Larger jobs naturally take longer, and we will say how long yours will take.
Where is Mr Mastic based?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
What guarantee comes with the work?
Every job comes with our one-year guarantee.
Can you regrout if a few tiles are loose?
Loose tiles need refixing before regrouting. We’ll show you which ones before any grout comes out.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Are you insured?
Yes. We are fully insured, and we’ve been doing sealant work for more than 20 years.
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Nearby places to Harrow
More services for Harrow
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
In hotels, rooms out of use cost money, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Surface by surface
Wet rooms
Both the grout and the silicone in a wet room matter. We renew both.
Bathroom floors
Grout on a floor is walked on as well as wetted. It wears and darkens over time.
Harrow homes and their sealant
London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, so tired sealant is best dealt with early. Harrow has hotels and guest accommodation nearby. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room.
For an older house near a landmark such as Church of St Peter, walls and floors in older homes can move, and sealant and grout show it first. Harrow is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Harrow is about 7 miles south of Watford, in Greater London. Across the HA2 area, we can carry out regrouting at your property. Across Greater London, we cover 764 places, and Harrow is one of them. London is on our list too, around 12 miles away.
Postcode districts we cover here for regrouting: HA2, HA1, UB5 and HA3. Whether your property is on High Street, London Road and Perceval Square or anywhere close by, we can help. Harrow is on the B457 and B458, which makes it straightforward to reach with everything needed for regrouting. Neighbouring places we cover for regrouting include Roxeth (1 mile south), South Harrow (1 mile south), North Harrow (1 mile north-west), Harrow on the Hill (1 mile south-east) and Rayners Lane (1 mile west). Larger places within reach include London (12 miles south-east), City of Westminster (9 miles south-east), Marylebone (10 miles south-east), Kensington (8 miles south-east), St Pancras (11 miles east) and Shoreditch (12 miles east).
Near you in Harrow
Locally, jobs take us to homes and businesses close to Kingsfield Arms, Grange Primary School and Northwick Park, among other places. Harrow’s nearest station is Harrow-on-the-Hill station, roughly 0.7 miles north-east of the centre. Well-known places in the area include St. George's Shopping Centre (0.7 miles north-east) and Clementine Churchill Hospital (1 mile south-east). Open spaces near Harrow include Islip Manor Meadows and Northala Fields.
Why act early in Harrow
Patching a few joints can look like a quick win, but patched grout rarely matches the rest and the old grout carries on failing. Regrouting the whole area gives an even, lasting finish. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in Harrow.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Why Harrow customers choose us
- 180+ five-star Google reviews
- Tidy, careful work
- Any old sealant cut out fully, not covered over
- Trusted Arbo and Everbuild sealants
Read our cost guide and customer reviews.