Greater London · England
New Build Mastic in Hoxton
We cover Hoxton for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Messy sealant that spoils new finishes
- Worktop and upstand sealant coming away
- Plot mastic for developers ahead of handover
Why it’s worth doing now in Hoxton
For developers, getting the sealant right first time saves return visits. Every return visit for a failed seal takes time and most come down to preparation. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Hoxton, the repair is bigger than the sealant job would have been.
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
Why Hoxton customers choose us
- 180+ five-star Google reviews
- Tidy, careful work
- We agree the colour with you first
- Full insurance on every job
New build mastic for homes and businesses in Hoxton
Our new-build work comes in two parts: plot mastic for developers, and putting right failed sealant for people who’ve bought a new home. Both get the same care over preparation, because that’s what rushed new-build sealant normally lacks. We work on bathrooms & en suites, skirting & floors and kitchens, and common reasons people get in touch are sealant work across a run of new homes and frame joints opening as the plaster dries.
Shops, offices and commercial units across London have hard-wearing floors with movement joints that need resealing as they wear, while new homes need a neat, sound finish around frames, baths and kitchens before handover.
Big or small, it’s backed by our 12-month guarantee in Hoxton and across Greater London.
- Location
- Hoxton (N1, N1P, EC1V)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Hoxton: your questions answered
Do you cover Hoxton for new build mastic?
Yes, Hoxton is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Do you work for landlords with property near Hoxton station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear quote.
Who should fix failed sealant in a new build?
While the snagging or warranty period runs, the builder should be your first contact. If it is not sorted, or keeps failing, get in touch with us.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
How long does the job take?
That depends on the amount of work, but as a guide it takes anything from a few hours to several days, depending on the number of plots. We’ll give you a better idea when we quote.
When is the best time to reseal in a new build?
Any seal that is leaking should be redone right away. Cosmetic gaps can wait until the first year or two of movement has passed.
Can new sealant go on top of the old bead?
No. We always remove the existing bead, the joint cleaned and primed where needed, before resealing.
Are you insured?
Yes. We’re fully insured.
The process
On the day, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. The work generally takes a few hours for most snagging lists, longer for a run of plots. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Hoxton. A visitor permit or a nearby bay makes the visit run more smoothly.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Before we arrive
- Clear the area around the work
- Let us know if you’ve seen damp or leaks
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Keeping the joints in good condition
Aftercare is simple:
- Report sealant problems to your builder during the snagging period
- Avoid scourers and strong chemicals on sealant
- Open a window or run the fan after bathing
- Check bath and shower seals every few months as the house settles
Follow the cure time we give you before the area gets wet. Silicone is normally left for about a day before water reaches them.
Report failed sealant to the builder while you’re in the snagging period. After that, putting it right may fall to you so report it promptly.
What new build mastic looks like in Hoxton
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent.
Hoxton is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Hoxton is about 2 miles north of London, in Greater London. For new build mastic in and around Hoxton, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We’re based in Crawley and cover Greater London. Across Greater London, we cover 764 places, Hoxton among them.
Work in N1, N1P and EC1V works the same way as everywhere else we cover. If you need new build mastic at a property on City Road, Noel Road and East Road or anywhere close by, we can help. Hoxton sits on or near the A1200 and A1208, which makes travel easy. We also cover Haggerston (1 mile east), Shoreditch (1 mile south-east), Canonbury (1 mile north), De Beauvoir Town (1 mile north) and St Luke's (1 mile south-west). Larger places within reach include City of Westminster (3 miles south-west), Marylebone (3 miles south-west), Kensington (6 miles south-west), Walthamstow (4 miles north-east), Hampstead (4 miles west) and Ruislip (14 miles west). Hoxton is among the bigger towns we cover in Greater London.
What’s near Hoxton
We work in homes and buildings around Bishopsgate Institute Special Collections and Archives, Islington Green School and Stag's Head pub. Also close by are Hackney University Technical College (under half a mile south-east) and Shoreditch Park (within half a mile north-west). Hoxton has its own railway station: Hoxton station. Nearby you’ll also find St Leonard's Hospital (less than half a mile east) and Montfichet's Tower (1.6 miles south-west). Not far away are St. James's Park Lake and Barnsbury Wood.
More services for Hoxton
Surface by surface
Show homes
Show homes need sealant that looks right from day one. Every bead is neat and coloured to suit the room.
Plot handovers
Taking time over preparation reduces return visits. Dust from the build is removed first.
When to call us in Hoxton
Sealant is often one of the last jobs before handover. Joints are not always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
It’s worth asking for a quote if you see:
- Shower seals failing in the first year or two
- Sealant that never bonded to the surface
- Frame joints opening as the plaster dries
- Gaps between new skirting and floors
If you’ve bought a new home near Hoxton station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- Which colour the sealant will be
- Are they insured?
- Whether the sealant suits the joint
- Is VAT in the price?
How we quote for new build mastic
Call for a quick quote. The main things that affect it are:
- When we can work, for business premises
- How many rooms, windows or areas are involved
- Access and height
- Which sealant suits the joint
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
- Roughly how big the job is
- Where the job is, and your postcode
To get a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before work begins.