Greater London · England
Regrouting in Greenhill, Greater London
Raking out old, cracked or stained grout and regrouting tiled walls and floors for homes and businesses in Greenhill and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Grout that stays dark however much it’s cleaned
- Crumbling grout between the tiles
- Splashback grout that has darkened
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Rinse the tiles after showering
- Look at the sealant in the corners now and then
- Get any tile that moves checked promptly
- Skip wire brushes and scourers
If a tile starts to feel loose, get it looked at early. A loose tile cracks the grout around it and open a path for water.
Once grout cracks, it tends to get worse. Water gets behind the tiles, and they can begin to come away, so regrouting early can save a retile.
How we handle regrouting in Greenhill
Regrouting is usually paired with resealing. Grout belongs between tiles, but internal corners and edges flex, so they need flexible silicone instead. Doing both at once leaves the whole area sound. We work on kitchen splashbacks, wet rooms and shower walls, and people most often call us about greasy, stained grout behind the hob and grout washed out of a shower.
Hard London water leaves limescale on sealant, grout and taps alike. In Greenhill, regrouting is as much about a room looking cared for as about keeping water out.
There’s a 12-month guarantee on every job, large or small.
- Location
- Greenhill (HA1, HA3, HA2)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Your questions about regrouting in Greenhill
I let a flat near Harrow-on-the-Hill station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Could a tired shower seal in my Greenhill flat affect the neighbours below?
Yes, and the first sign is often a stain on the ceiling below. Cutting out the old sealant and laying a new bead early stops it getting that far.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you do not need to watch us work.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Do you work in Greenhill?
Yes. We’re based in Crawley and work across South East England, London and Scotland.
Can you regrout if a few tiles are loose?
New grout can’t hold loose tiles in place. We flag any loose or hollow tiles before starting so you know where you stand.
Is resealing included with regrouting?
Normally we do both. Grout and sealant do different jobs, so both are renewed and it’s all in the quote.
How the job changes by surface
Bathroom floors
If floor grout keeps cracking, the floor may be moving. We check the tiles before regrouting.
Shower walls
Showers put more water on grout than anywhere else. We replace it and renew the silicone at the edges.
Signs you need regrouting in Greenhill
When tiles or the wall behind them move, the grout cracks. That can be a loose tile, a flexing floor or a stud wall, so we check the tiles before any work starts.
Any of these means the joints need attention:
- Grout that stays dark however much it’s cleaned
- Discoloured grout on otherwise sound tiles
- Cracked grout along the bath or tray
- Dirty, worn grout on a tiled floor
Greenhill is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Before you book anyone
- Which colour the sealant will be
- Whether they seal over old material or remove it
- How the joint is cleaned and prepared
- What the quote includes, VAT included or not
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Greenhill homes and their sealant
London has hard water, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in. In a London flat, water from a failed bath or shower seal can reach the neighbours below, which is why it’s worth fixing early.
If you look after a building such as Saint Jerome Church of England Bilingual School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s. For landlords with property near Harrow-on-the-Hill station, clean grout and fresh sealant between tenancies make a bathroom look cared for again.
Greenhill is about 1 mile north-east of Harrow, in Greater London. Whether you are in the middle of Greenhill or further out, we cover regrouting for every kind of property, from flats and houses to offices and hotels. Our Greater London coverage runs to 764 places, Greenhill among them. Our London page covers work nearby, about 12 miles away.
All of HA1, HA3 and HA2 is within our area for regrouting. We cover properties on Lyon Road, Hill Road and Byron Road and the roads around them. Other places close to Greenhill include Wealdstone (1 mile north), Northwick Park (1 mile south-east), Harrow (1 mile south-west), Kenton (1 mile east) and Roxeth (1 mile south-west). We also work in nearby towns such as London (12 miles south-east), City of Westminster (9 miles south-east), Marylebone (9 miles south-east), Kensington (8 miles south-east), St Pancras (10 miles south-east) and Shoreditch (12 miles east).
What’s near Greenhill
Typical jobs here are in homes near Royal Oak pub, Northwick Park and Harrow High School, among other places. Greenhill has its own railway station: Harrow-on-the-Hill station. Other landmarks nearby include St. Anns (within half a mile south-west) and Hilfield Castle (4.8 miles north). The countryside around Greenhill includes Masons Field and Northala Fields.
How the visit works
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the job takes a few hours for a shower enclosure, longer for a whole room for a typical job. In a London area like Greenhill, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- 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.
- We regrout the joints and clean the tile faces.
- We finish with silicone in the moving joints.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Let us know about parking restrictions
- On commercial sites, let us know about site rules
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
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Why deal with it now?
If tiles are loose, regrouting alone isn’t the answer. We’ll tell you before we start so you know what’s involved. Where the tiles are sound, regrouting is far less disruptive than retiling. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Why book with us
- Over 20 years’ experience
- Every job guaranteed for a year
- Sanitary silicone with an anti-fungal additive in wet areas
- Fully insured
Take a look at what affects the cost and what customers say.