Greater London · England
Brixton New Build Mastic
Problem with your new-build sealant joints in Brixton? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Smeared, uneven beads picked up at snagging
- Shower seals failing in the first year or two
- Gaps behind new kitchen upstands
What new build mastic looks like in Brixton
Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you’ve bought a new home near Brixton station, the sealant around baths, showers and frames is worth checking in the first year or two.
Brixton is about 1 mile south of Stockwell, in Greater London. Anywhere in SW2, we can carry out new build mastic at your property. Our Greater London coverage runs to 764 places, and Brixton is one of them.
Work in SW2, SW9 and SW4 works the same way as everywhere else we cover. You’ll find streets such as Acre Lane, Jelf Road and Trent Road, and we cover them all. Brixton is on the A204 and A2217, so it’s easy for us to get to with everything needed for new build mastic. We also cover the places around Brixton: Stockwell (1 mile north), Clapham Park (1 mile west), Angell Town (1 mile north), Loughborough Junction (1 mile north-east) and Tulse Hill (1 mile south-east). Further out, we also cover London (3 miles north), City of Westminster (4 miles north), Marylebone (4 miles north), Kensington (5 miles north-west), St Pancras (5 miles north) and Shoreditch (5 miles north).
Near you in Brixton
Locally, jobs take us to homes and businesses close to Trinity Arms, Max Roach Park and Trinity Academy. There’s a railway station in Brixton itself: Brixton station. Nearby you will also find London General Cab Company Museum (0.9 miles north) and Baynard's Castle (3.8 miles north). Open spaces near Brixton include Battersea Park Lake and Centre for Wildlife Gardening.
How we handle new build mastic in Brixton
Snagging sealant properly means taking the failed bead out completely. Fresh silicone can’t bond to the old layer, so it all comes out before we clean, dry and reseal. Typical jobs include gaps behind new kitchen upstands and cracked sealant around new window and door frames, across kitchens, skirting & floors and bathrooms & en suites.
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.
We stand behind the work with a one-year guarantee, so you are covered after we’ve gone.
- Location
- Brixton (SW2, SW9, SW4)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need new build mastic in Brixton
Baths and trays settle under load once the home is lived in. If a bath wasn’t filled when it was sealed, the bead is stretched the first time it’s used and can tear.
These are the problems we are asked about most:
- Sealant applied over dusty or wet surfaces
- Cracked caulk along new skirting
- Untidy sealant flagged on a snagging list
- Joints pulling apart as timber shrinks
As a London address, Brixton can be tricky for parking: let us know about parking bays, permits or a driveway.
What to look for in a quote
- Are they insured?
- Who turns up on the day
- How the colour is chosen
- What the quote includes, VAT included or not
Towns and villages near Brixton
Also in Brixton
The process
We keep the work tidy and contained to the joints we’re treating, so you can carry on as normal. Expect the work to take a few hours in a single home. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- 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
- Mention any parking rules near the property
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
Ask for 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 explain what’s involved and give you a clear price.
Read more
Should I try it myself first?
If you do try it yourself, take your time over the 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.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How we quote for new build mastic
For a quick quote, just ask. The main things that affect it are:
- How easy the joints are to reach
- When we can work, for business premises
- Whether there’s mould to deal with
- How many areas need sealing
The cost depends on the size of the job, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
What we need to know
Before you ask for a quote, have a think about:
- Any previous sealing or DIY work
- Where the job is, and your postcode
- The rough size of the job
- A few photos by email, if you can
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
We also work for property managers and facilities teams in Brixton and across Greater London. We can quote a run of properties together, and we are fully insured for the work.
Brixton: your questions answered
Can you do new build mastic in Brixton?
Yes. Our work covers London and the South East, and Brixton is part of that. 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 Brixton?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can you match the sealant colour to my new kitchen or bathroom?
White and clear are the most common, but other colours are available. We choose one to suit the room and agree it with you.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that normally means someone at home.
What does new build mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few photos.
Do you work for letting agents?
Yes. We work for homeowners, landlords, letting agents, businesses and hotels in Brixton.
Looking after it afterwards
A little care helps the new joints last. We recommend:
- Clean sealant with mild detergent, not abrasives
- Wait for the cure time before using a resealed shower
- Get a leaking seal dealt with straight away
- Use the extractor fan every time you shower
Clean the sealant with a mild detergent and a soft cloth. Keep scourers and harsh chemicals off it, which can damage the surface.
If a shower tray or bath seal splits in the first year, look for movement. Getting it resealed properly, and any movement checked, stops it recurring.
Why deal with it now?
A failed shower or bath seal in a new home lets water into floors and walls that are still drying out. Resealing promptly protects the new finishes around it. 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. Putting it right early is much less trouble for homes in Brixton.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- Every job guaranteed for a year
- You choose the colour before work begins
- Trusted Arbo and Everbuild sealants
- White, clear, grey or another colour, product permitting
Take a look at how sealant jobs are priced or our reviews.