Greater London · England
New Build Mastic in Cricklewood
Professional new build mastic in and around Cricklewood, with every bit of old sealant taken out first and a 12-month guarantee.
- Skirting joints opening in the first winter
- Beads laid onto grit and dust from the build
- Cracks appearing as a new home settles
What new build mastic looks like in Cricklewood
Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Cricklewood is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Cricklewood is about 1 mile north-west of Kilburn, in Greater London. Every kind of property in Cricklewood is covered for new build mastic. The work is guaranteed for a year. Cricklewood is one of 764 towns and villages in Greater London where we work for new build mastic. Our London page covers work nearby (7 miles or so).
Every address in NW2, NW6 and NW10 is within our area for new build mastic. New build mastic is available to properties on Ivy Road, Walm Lane and Dean Road. Cricklewood sits on or near the A407. We also cover the places around Cricklewood: Brondesbury (1 mile south-east), Willesden (1 mile south-west), Dollis Hill (1 mile north-west), Willesden Green (1 mile south-west) and Neasden (1 mile west). Larger places within reach include London (7 miles south-east), City of Westminster (4 miles south-east), Marylebone (4 miles south-east), Kensington (4 miles south), St Pancras (5 miles south-east) and Shoreditch (6 miles east).
Landmarks near Cricklewood
In Cricklewood, that means homes and buildings near Hampstead School, The Crown Public House and Gladstone Park, among other places. There’s a railway station in Cricklewood itself: Cricklewood station. A little further out are St Andrew's Hospital (0.8 miles north-west) and Brent Museum and Archives (0.7 miles south-west). Open spaces near Cricklewood include Parliament Hill and Westbere Copse.
New build mastic for homes and businesses in Cricklewood
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. If you are still within the builder’s snagging or warranty period, tell them first. We are often asked to deal with leaking shower tray seals in a new home and plot mastic for developers ahead of handover, across bathrooms & en suites, windows & doors and show homes.
Across London, commercial floors have movement joints that break down under heavy foot traffic, and new homes need their plot mastic finished properly before handover.
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.
- Place
- Cricklewood (NW2, NW6, NW10)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Cricklewood
It often makes sense to do all the sealant items on a snagging list together. You get one visit and one clear quote. 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 Cricklewood.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
What you get with us
- Full insurance on every job
- 20+ years of sealant experience
- Any old sealant cut out fully, not covered over
- Sealant colour chosen to suit
Aftercare tips
To keep the joints looking good and working properly:
- Clean sealant with mild detergent, not abrasives
- Avoid running a DIY bead over the old one
- Put sealant faults on your snagging list early
- Get a leaking seal dealt with right away
Keep an eye on the joints over the first couple of years. Hairline gaps can open as timber and plaster dry.
Lifting sealant traps moisture and mould behind it. Resealing before mould gets in keeps the job straightforward.
Cricklewood: your questions answered
Is Cricklewood in your area for new build mastic?
Yes, Cricklewood is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear price.
I let a flat near Cricklewood station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Do you do commercial work?
Yes. We can plan bigger jobs in stages.
How long does new build mastic take?
Most jobs take anything from a few hours to several days, depending on the number of plots, including preparation and clearing up. We’ll confirm how long when we quote.
Will it make a mess?
Tidy work is part of the job. We protect what’s around the joints.
Where is Mr Mastic based?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Can you match the sealant colour to my new kitchen or bathroom?
That depends on what the joint meets: white or clear in most bathrooms, and a colour to suit worktops, frames and floors elsewhere. We will agree it with you first.
My new home is still under warranty. Should I contact you?
Report it to the builder first while you are covered. Once that’s done, or if they will not put it right, we can reseal it properly.
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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 doesn’t work out, we can still put it right.
Nearby places to Cricklewood
More services for Cricklewood
What we are called out for in Cricklewood
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes don’t always leave time for joints to dry.
Any of these means the joints need attention:
- Second-fix sealing on new plots
- Leaking shower tray seals in a new home
- Gaps between new skirting and floors
- Kitchen sealant that has pulled off the wall
For new homes near Cricklewood station, it’s worth checking the sealant early, while snags are still fresh.
Questions to ask before you book
- What the cure time is
- Whether they’re fully insured
- Is VAT in the price?
- Who turns up on the day
What happens on the day
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. In total, it normally takes anything from a few hours to several days, depending on the number of plots. For a job in Cricklewood, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely.
- We clean out the dust and grit left from the build.
- 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
- Keep pets and children clear of the area while we work
- Mention any leaks or damp you’ve noticed
- Mention if the joints have been sealed before
Getting a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.
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What affects the quote in Cricklewood
We do not publish a price list, because jobs vary so much. The quote depends on:
- The amount of work
- Working hours on commercial sites
- How many areas need sealing
- Which sealant suits the joint
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and send you a clear quote before we start.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Any access issues, like height or stairs
- What’s wrong with the joints now
- Pictures of the joints, sent by email
- Whether it’s a home or a business
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll come back to you with a quote.
What sealant work cannot fix
In fairness, some problems need a different trade:
- Leaks from pipes, valves or wastes, which need a plumber
- Damaged fittings that need replacing
- Disputes or warranty claims with your builder
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Joints and surfaces we work on
- Skirting & floors
- Plot handovers
- Show homes
- Windows & doors
- Kitchens
- Bathrooms & en suites