Greater London · England
Chislehurst New Build Mastic
New build mastic for Chislehurst and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Messy sealant that spoils new finishes
- Gaps behind new kitchen upstands
- Second-fix sealing on new plots
New build mastic in Chislehurst
Building dust is behind a lot of failed new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the new bead bonds properly. We work on plot handovers, windows & doors and show homes, and the jobs we see most are sealant work across a run of new homes and leaking shower tray seals in a new home.
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 shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
There’s a 12-month guarantee on every job, whatever its size.
- Place
- Chislehurst (BR7, BR1, BR2, SE9)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we can’t put right
Sealant is not the answer to every problem, and we’d rather say so up front. It won’t solve:
- Leaking fittings rather than failed sealant
- Baths and trays that move too much for sealant to cope with
- Cracked trays, tiles or worktops
Not sure which it is? You can call 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
What we seal
- Kitchens
- Bathrooms & en suites
- Show homes
- Skirting & floors
- Plot handovers
- Windows & doors
How the job changes by surface
Kitchens
Worktop, upstand and sink joints in new kitchens often get a hurried bead. We take it out and reseal neatly, colour-matched where it shows.
Show homes
In a show home, the sealant is on display. Every bead is neat and coloured to suit the room.
How it works
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to several days, depending on the number of plots. For a job in Chislehurst, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We go through the snagging list or plot schedule and agree the joints to do.
- Failed or untidy sealant is cut out completely.
- Each joint is cleaned of dust and grit, then primed if required.
- New sealant suited to each joint is applied and tooled neatly.
- We check every joint and tell you how long each needs to cure.
Getting ready for the visit
- Let us know about parking restrictions
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
How to get a quote
Want a quote for new build mastic? Please phone 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Signs you need new build mastic in Chislehurst
Once people move in, baths and trays take weight and bed down. If a bath wasn’t filled when it was sealed, the bead is stretched the first time it’s used.
Any of these means the joints need attention:
- Sealant applied over dusty or wet surfaces
- Smeared, uneven beads picked up at snagging
- Frame joints opening as the plaster dries
- Sealant work across a run of new homes
As a London address, Chislehurst can be tricky for parking: let us know about parking bays, permits or a driveway.
What your quote should include
- How much experience the applicator has
- What product goes in the joint
- What preparation is included
- What happens if the job turns out different
Common questions in Chislehurst
Can you do new build mastic in Chislehurst?
Yes. We work across London and the South East, and Chislehurst is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Is parking a problem for a job in Chislehurst?
Parking in Chislehurst, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Do you guarantee your work?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we will put it right.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
My new home is still under warranty. Should I contact you?
Your builder, if you are still in their snagging or warranty period. After that, or if their repair keeps failing, we can do it and our work is guaranteed for a year.
Are you insured?
Yes, we’re fully insured.
What affects the quote in Chislehurst
We don’t publish a price list, because jobs vary so much. What we look at:
- The number of rooms or windows
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
- When we can work, for business premises
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
Helping us quote
What to tell us when you ask for a quote:
- The address or postcode of the job
- Whether it has been sealed before
- How we’d reach the joints
- If it’s domestic, commercial or a hotel
For a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
Landlords, agents and businesses in Chislehurst
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
More services for Chislehurst
Why it’s worth doing now in Chislehurst
DIY kits do not solve the main problems with new-build sealant: dust, no primer and old sealant left in the joint. Proper removal and preparation are what make it last. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Chislehurst, the repair is bigger than a sealant job.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why Chislehurst clients choose us
- We agree the colour with you first
- Colour picked to suit the job
- Full insurance on every job
- Domestic, commercial and hotel work
See our cost guide and customer reviews.
New build mastic around Chislehurst
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
If you’ve bought a new home near Chislehurst station, the sealant around baths, showers and frames is worth checking in the first year or two.
Chislehurst is about 3 miles north-west of Orpington, in Greater London. If you need new build mastic in Chislehurst, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Greater London from our Crawley base, Chislehurst included. 764 places in Greater London are on our list. For nearby work, see our London page, about 9 miles away.
We cover every part of BR7, BR1, BR2 and SE9 for new build mastic. That includes homes and businesses on Chislehurst High Street, Sanderson Square and Wilderness Road. With the A208 and B264 close by, Chislehurst is easy for our applicators to reach for new build mastic. Neighbouring places we cover for new build mastic include Elmstead (1 mile west), Foxbury (1 mile east), Bickley (1 mile south-west), Widmore (1 mile south-west) and Coldharbour (1 mile north-west). Further out, we also cover London (9 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles north-west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Local landmarks in Chislehurst
Around Chislehurst, our work takes us to homes and buildings near The Queens Head pub, Coopers School and Chislehurst Common. Chislehurst’s nearest station is Chislehurst station, about 0.7 miles south-west. Other landmarks nearby include The Glades (2.2 miles west) and Queen Mary's Hospital (1.6 miles east). Green spaces nearby include The Tarn and Summer Hill.