Greater London · England
New-build mastic & snagging in West Hendon, Greater London
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in West Hendon and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Frame joints opening as the plaster dries
- Plot mastic for developers ahead of handover
- Messy sealant that spoils new finishes
What sealant work cannot fix
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Your warranty claim itself, which is between you and the builder
- Damaged fittings that need replacing
- A tray or bath that is not properly supported, until it’s fixed
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Show homes
- Bathrooms & en suites
- Skirting & floors
- Kitchens
- Plot handovers
- Windows & doors
New build mastic in West Hendon, done properly
Building dust is behind a lot of failed new-build sealant. We clean every joint thoroughly and prime where the surface and product need it, so the sealant actually sticks instead of bonding to the dust. If you have kitchen sealant that has pulled off the wall and smeared, uneven beads picked up at snagging, we can help.
New flats are going up across London, many of them in larger developments. Snagging there often goes through the developer or managing agent, and shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- West Hendon (NW9, NW4)
- Region
- Greater London
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Landlord and commercial work in West Hendon
If you manage several properties in or around West Hendon, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Nearby places to West Hendon
What else we do in West Hendon
Signs you need new build mastic in West Hendon
Not every new-build joint gets the right sealant: decorators’ caulk in a wet area, or a stiff sealant where there’s movement. Neither lasts long.
People generally contact us after spotting something like this:
- Cracked sealant around new window and door frames
- Beads laid onto grit and dust from the build
- Gaps behind new kitchen upstands
- Plot mastic for developers ahead of handover
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.
What to look for in a quote
- Is the old sealant removed completely?
- Is VAT in the price?
- How the surfaces are prepared before sealing
- How much experience the applicator has
What affects the quote in West Hendon
Some jobs are bigger than they look, and some smaller. The main factors:
- Any mould that needs treating
- Access and height
- Which sealant suits the joint
- How many areas need sealing
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, ring 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- Any previous sealing or DIY work
- The problem you’ve noticed
- Where the property is
- Whether it’s a home or a business
For a quick quote, get us on the phone, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work before giving you a price.
What we do, step by step
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes anything from a few hours to several days, depending on the number of plots. For a job in West Hendon, 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.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- Every bit of the old builder’s sealant is cut out down to clean surfaces.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
- Mention any leaks or damp you’ve noticed
How to get a quote
Need a quote? Please ring 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
New build mastic in West Hendon: local notes
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. Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent.
West Hendon is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
West Hendon is about 2 miles north of Neasden, in Greater London. Every kind of property in West Hendon is covered for new build mastic. Every job comes with our 12-month guarantee. 764 places in Greater London are on our list, from the larger towns to small villages. London is on our list too, about 9 miles from West Hendon.
We work across the NW9 and NW4 postcode area for new build mastic and the streets around it. New build mastic is available to properties on Alpini Road, Catkin Road and Garrick Road. West Hendon sits on or near the A5. Nearby, we also carry out new build mastic in The Hyde (1 mile south), Colindale (1 mile north), The Burroughs (1 mile north-east), Hendon (1 mile east) and Staples Corner (1 mile south-east). We also work in nearby towns such as London (9 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (7 miles south-east) and Shoreditch (8 miles south-east).
Around West Hendon
We work in homes and buildings around Woodfield School, Moon Under Water pub and Brampton College and the streets around them. West Hendon has its own railway station: Hendon station. Nearby you’ll also find Brent Cross Shopping Centre (1.1 miles east) and Church Farmhouse Museum (1 mile north-east). The countryside around West Hendon includes Masons Field and Parliament Hill.
Leave it or put it right?
A failed shower or bath seal in a new home lets water into floors and walls that are still drying out. Dealing with it early keeps the damage away from ceilings, floors and finishes. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in West Hendon, the repair is bigger than a sealant job.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why book with us
- 180+ five-star Google reviews
- Colour agreed with you before work begins
- One-year guarantee on every job
- Experience in homes, commercial sites and hotels
See our cost guide and what customers say.
Common questions in West Hendon
Do you work for landlords with property near Hendon station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Is West Hendon in your area for new build mastic?
Yes. Our work covers London and the South East, and West Hendon is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear price.
Can I do it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
Who should fix failed sealant in a new build?
Start with your builder while their snagging or warranty period runs. After that, or if their repair keeps failing, we can do it with our one-year guarantee.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
When is the best time to reseal in a new build?
For failed seals that let water through, the best time is now. Cosmetic gaps can wait until the first year or two of movement has passed.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. Indoors, that usually means someone at home.