Greater London · England
New Build Mastic in Hendon
Plot mastic for developers and snagging failed sealant in new homes in Hendon, with a one-year guarantee on every job. Call for a quick quote.
- Beads laid onto grit and dust from the build
- Smeared, uneven beads picked up at snagging
- Cracks appearing as a new home settles
What sealant work can’t fix
We will not take on work that won’t last, so here’s what sealant cannot put right:
- Cracked trays, tiles or worktops
- Cracking that points to a structural problem
- Plumbing faults behind the sealant
If in doubt, ring 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Show homes
- Bathrooms & en suites
- Kitchens
- Plot handovers
- Skirting & floors
- Windows & doors
About our new build mastic in Hendon
Failed shower seals, gaps along the skirting and messy beads are common items on a new-home snagging list. While the builder’s snagging or warranty period runs, report it to them first, and if it isn’t put right, get in touch with us. We work on bathrooms & en suites, windows & doors and plot handovers, and the jobs we see most are kitchen sealant that has pulled off the wall and frame joints opening as the plaster dries.
London homes range from new-build flats to period conversions with new floors laid over old boards. Wherever a floor meets a wall, a skirting or a threshold, the joint has to allow for movement, in Hendon as anywhere.
You get a one-year guarantee, the same in Hendon as everywhere else we work.
- Place
- Hendon (NW4, NW9, NW2, NW11)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Hendon
It often makes sense to do all the sealant items on a snagging list together. You get one visit and one clear quote to plan around. 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. Dealing with it early is far simpler for homes in Hendon.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
What you get with us
- Experience in homes, commercial sites and hotels
- A sealant colour to suit the surroundings
- Trusted Arbo and Everbuild sealants
- Over 20 years’ experience
See our cost guide or customer reviews.
Looking after it afterwards
So the new joints stay in good condition:
- Keep water off fresh sealant until it has cured
- Wipe joints with warm soapy water
- Don’t wait for the house to settle if water is getting through
- Use the extractor fan every time you shower
Watch the joints as the house settles. Small gaps can appear as the house dries, and they’re simple to reseal once movement has slowed.
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.
Different surfaces, different methods
Skirting and floors
Floors and skirting move as the house dries and the heating runs. Caulk cracks; a flexible sealant moves with it painted or coloured to suit.
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. A proper reseal keeps water in the tray.
DIY versus a professional finish
If you’re 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 fails, we can still redo it.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Questions from Hendon
Do you cover Hendon for new build mastic?
Yes, Hendon is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Is parking an issue for new build mastic in Hendon?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in.
Is there a guarantee?
Yes. Every job comes with a 12-month guarantee.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
Should I go to my builder first?
While the snagging or warranty period runs, the builder should be your first contact. If they’re slow or the fix doesn’t last, we can help.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours in a single home. We’ll give you a better idea when we quote.
How do I get a quote for new build mastic in Hendon?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or email us with a short description of the job.
Quotes for new build mastic in Hendon
We do not publish a price list. What we look at:
- Which sealant suits the joint
- The size of the job
- Access and height
- When we can work, for business premises
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
What to tell us for a quote
What to tell us when you ask for a quote:
- The problem you’ve noticed
- The address or postcode of the job
- A few photos by email, if you can
- How many joints, rooms or windows are involved
Asking for a quote is easy: let us know what needs doing and where. A few photos by email make the job easier to understand.
Towns and villages near Hendon
What else we do in Hendon
New build mastic around Hendon
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 snags may need reporting through the developer or the managing agent.
As a London address, Hendon can be tricky for parking: let us know about parking bays, permits or a driveway. If you’ve bought a new home near Hendon station, the sealant around baths, showers and frames is worth checking in the first year or two.
Hendon is about 3 miles north-west of Hampstead, in Greater London. We provide new build mastic to homes and businesses in Hendon and the surrounding area. Our area takes in 764 places across Greater London, large and small. We also work in London, around 8 miles away.
Postcode districts we cover here for new build mastic: NW4, NW9, NW2 and NW11. If you need new build mastic at a property on Church Road, Station Road and Sydney Grove or a nearby road, our applicators can take on the job. Hendon is on the A5 and A41, so it’s easy for us to get to. We also cover The Burroughs (1 mile north-west), Brent Cross (1 mile south), Staples Corner (1 mile south), West Hendon (1 mile west) and The Hyde (1 mile west). Larger places within reach include London (8 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles south-east).
Landmarks near Hendon
We work in homes and buildings around Hasmonean Primary School, The White Bear pub and Kisharon College, among other places. The nearest railway station is Hendon station, roughly 0.7 miles south-west. Other landmarks nearby include Brent Cross Shopping Centre (0.5 miles south) and St Andrew's Hospital (1.6 miles south). Green spaces nearby include Darland's Lake and Parliament Hill.
How the visit works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes a few hours for most snagging lists, longer for a run of plots, depending on the size of the job. In Hendon, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- Each joint is checked for movement before any work starts.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
Before we arrive
- Clear the area around the work
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.