Greater London · England
Dollis Hill New Build Mastic
New build mastic in Dollis Hill from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking shower tray seals in a new home
- Worktop and upstand sealant coming away
- Gaps opening as the house dries out and settles
Different surfaces, different methods
Kitchens
Sink joints are wet all the time. A kitchen sealant goes in there, food-safe where it’s needed.
Windows and doors
On new builds, external frame sealant can be patchy. It’s resealed with an exterior sealant suited to the frame and wall.
New build mastic for homes and businesses in Dollis Hill
New homes move as they dry out. Timber dries and shrinks, and baths and trays settle, and sealant applied in a hurry at handover can split. Common call-outs are for messy sealant that spoils new finishes and joints pulling apart as timber shrinks, across plot handovers, kitchens and windows & doors.
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, in Dollis Hill and beyond.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Where
- Dollis Hill (NW2, NW10, NW9)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Record problems with dated photos
- Clean sealant with mild detergent, not abrasives
- Watch for new gaps as the house dries out
- Ventilate bathrooms well, especially in the first year
Photograph failed sealant before it’s redone and keep the builder’s replies. It helps if anything else comes up during the warranty period.
Don’t let the snagging period run out with sealant problems unreported. Once it ends, the repair may be down to you, so raise it early.
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Landlords and agents in Dollis Hill can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
When something else is needed
New sealant can’t fix everything, and we will tell you before any work starts. Sealant will not put right:
- Settlement cracks that need a surveyor
- Disputes or warranty claims with your builder
- A tray or bath that isn’t properly supported, until it’s fixed
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Kitchens
- Windows & doors
- Show homes
- Plot handovers
- Bathrooms & en suites
- Skirting & floors
Why it’s worth doing now in Dollis Hill
A hairline gap at a skirting can wait, but a leaking seal can’t. If you’re unsure which you have, phone 0345 464 0079 or email us with pictures and we’ll give you a straight answer. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Dollis Hill, the repair is bigger than a sealant job.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we will explain what it covers.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- White, clear, grey or another colour, product permitting
- A 12-month guarantee on all work
- Approved under the ARBOMaster scheme
See what affects the cost or our reviews.
How the visit works
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes a few hours in a single home in most cases. In Dollis Hill, 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.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- We check every joint and leave you with the cure times.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
- Let us know about parking restrictions
Ask for a quote
Want a quote for new build mastic? Please call 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and give you a clear price before we start.
Advice
Questions from Dollis Hill
Is parking an issue for new build mastic in Dollis Hill?
Parking in Dollis Hill, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Do you cover Dollis Hill for new build mastic?
Yes, Dollis Hill is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing.
Can I send you my snagging list?
Yes. Photos of each sealant item help us quote. If something is not sealant, we’ll say so.
Do you guarantee your work?
Yes. Every job comes with a one-year guarantee.
Can you do several jobs on one visit?
Yes. Just list everything you need.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Do you work for landlords and businesses?
Yes. As well as householders, we work for landlords, agents, businesses and hotels in Dollis Hill.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours in a single home. We will give you a better idea when we quote.
Places near Dollis Hill
Other services in Dollis Hill
New build mastic around Dollis Hill
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent.
Dollis Hill is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. For new homes near Brent Cross West station, it’s worth checking the sealant early, while snags are still fresh.
Dollis Hill is about 1 mile north-east of Neasden, in Greater London. We provide new build mastic to homeowners, landlords and businesses in Dollis Hill and nearby, as part of our work across Greater London. 764 places in Greater London are on our list, large and small. You can also see our page for London, about 7 miles away.
We work across NW2, NW10 and NW9 for new build mastic. That includes homes and businesses on Brook Road, Lane Close and Crest Road. Neighbouring places we cover for new build mastic include Staples Corner (1 mile north-east), Neasden (1 mile south-west), Cricklewood (1 mile south-east), Willesden (1 mile south) and Brent Cross (1 mile north-east). Within a short drive, we also cover London (7 miles south-east), City of Westminster (5 miles south-east), Marylebone (5 miles south-east), Kensington (5 miles south), St Pancras (6 miles south-east) and Shoreditch (7 miles east).
What’s near Dollis Hill
In Dollis Hill, that means homes and buildings near Woodfield School, The Crown Public House and Gladstone Park and the streets around them. Dollis Hill has its own railway station: Brent Cross West station. A little further out are Brent Cross Shopping Centre (1 mile north-east) and St Andrew's Hospital (within half a mile south). For a walk, there’s Darland's Lake and Parliament Hill.