Greater London · England
New-build mastic & snagging in Fitzrovia, Greater London
Our applicators work in Fitzrovia on plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Kitchen sealant that has pulled off the wall
- Cracked sealant around new window and door frames
- Leaking shower tray seals in a new home
About our new build mastic in Fitzrovia
In a new home, every joint should have a clean, even bead. Smeared, patchy or cracked sealant is worth sorting early, before water reaches anything behind it. We work on bathrooms & en suites, kitchens and windows & doors, and people most often call us about smeared, uneven beads picked up at snagging and sealant applied over dusty or wet surfaces.
Much of London’s new housing is flats in larger developments. In a new development, snags are often reported through the developer or the managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
There’s a 12-month guarantee on every job, large or small.
- Place
- Fitzrovia (NW1W, W1T, W1G)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes anything from a few hours to several days, depending on the number of plots from start to finish. For a job in Fitzrovia, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely down to clean surfaces.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Mention if the joints have been sealed before
- Keep pets and children clear of the area while we work
- Try not to wet indoor joints just before the visit
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Related advice
What happens if it’s left?
Resealing everything on a snagging list in one visit is normally simpler than chasing joints one at a time. You get one visit and one clear quote. 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.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Why Fitzrovia clients choose us
- 180+ five-star Google reviews
- Colour agreed with you before we start
- Over 20 years’ experience
- A 12-month guarantee on all work
Read what affects the cost or what customers say.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Avoid scourers and strong chemicals on sealant
- Keep pictures and emails about snagging items
- Watch for new gaps as the house dries out
- Report sealant problems to your builder during the snagging period
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left in a busy bathroom.
Questions from Fitzrovia
Can you help a landlord with a rental near London Euston station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear quote.
Can parking be tricky for a visit in Fitzrovia?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Do the sealants smell?
Some sealants have a smell while they cure. Ventilation helps.
Do you work through snagging lists?
Yes. Send the list and a few pictures of the sealant items, and we will quote. We’ll flag anything that needs another trade.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We will tell you what we are using and why.
Do you come to Fitzrovia?
Yes. We are based in Crawley and work across South East England, London and Scotland, and that includes Fitzrovia.
How long will you be here?
Most jobs take a few hours in a single home, including the preparation. Your quote will say how long we expect yours to take.
New build mastic around Fitzrovia
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent.
Fitzrovia is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. For new homes near London Euston station, it’s worth checking the sealant early, while snags are still fresh.
Fitzrovia is about 1 mile north-east of Marylebone, in Greater London. Our applicators cover new build mastic for homeowners, landlords and businesses in Fitzrovia and nearby, as part of our work across Greater London. Across Greater London, we cover 764 places, Fitzrovia among them.
Our applicators cover all of the NW1W, W1T and W1G postcode area for new build mastic. Whether your property is on Euston Road, Duke's Road and Market Place or anywhere close by, our applicators can take on the job. Fitzrovia sits on or near the A501 and A4200, which makes travel easy. If you are just outside Fitzrovia, we cover Euston (1 mile north-east), Marylebone (1 mile south-west), Bloomsbury (1 mile east), Somers Town (1 mile north-east) and Soho (1 mile south-east). Larger places within reach include Kensington (3 miles south-west), Shoreditch (3 miles east), Walthamstow (7 miles north-east), Whitechapel (3 miles east), Hampstead (3 miles north-west) and Ruislip (12 miles west).
What’s near Fitzrovia
Around Fitzrovia, our work takes us to homes and buildings near Carpenters Arms, UCL School of Slavonic and East European Studies and St Anne's Churchyard and the streets around them. Nearby too are Wellcome Library (less than half a mile north-east) and Maria Fidelis Catholic School FCJ (within half a mile north). Fitzrovia has its own railway station: London Euston station. Nearby you’ll also find London Foot Hospital (under half a mile south-west) and Blindiana Museum (less than half a mile west). Green spaces nearby include St. James's Park Lake and Primrose Hill.
Work for landlords, hotels and businesses
For anyone letting property in or around Fitzrovia, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Damaged fittings that need replacing
- Deciding who is responsible under a builder’s warranty
- Structural cracks in walls or ceilings
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in Fitzrovia
- Show homes
- Bathrooms & en suites
- Windows & doors
- Kitchens
- Skirting & floors
- Plot handovers
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Quotes for new build mastic in Fitzrovia
Call for a quick quote. The main things that affect it are:
- Whether old sealant or filler has to be cut out
- The type of sealant required
- How easy the joints are to reach
- Working hours on commercial sites
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Asking for a quote
When you call or email, it’s useful to know:
- Pictures of the joints, sent by email
- Roughly how big the job is
- Any previous sealing or DIY work
- Where the property is
Getting a quote is simple: let us know the job and the location. A few pictures by email make the job easier to understand, and we will come back to you with a quote.