Greater London · England
New Build Mastic in Bexley
Plot mastic for developers and snagging failed sealant in new homes for Bexley, backed by a 12-month guarantee. Call for a quick quote.
- Gaps opening as the house dries out and settles
- Beads laid onto grit and dust from the build
- Smeared, uneven beads picked up at snagging
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
New build mastic for homes and businesses in Bexley
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. Common call-outs are for cracked caulk along new skirting and cracked sealant around new window and door frames, across bathrooms & en suites, skirting & floors and kitchens.
New flats are going up across London, many of them in larger developments. In a new development, snags are often reported through the developer or the managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
All of our work is guaranteed for twelve months.
- Where
- Bexley (DA5, DA6, DA14, DA1)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When it isn’t the sealant
New sealant cannot fix everything, and we will tell you before any work starts. It won’t solve:
- Deciding who is responsible under a builder’s warranty
- Plumbing faults behind the sealant
- A tray or bath that is not properly supported, until it’s fixed
If you are not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Where we work in Bexley
- Windows & doors
- Skirting & floors
- Plot handovers
- Kitchens
- Show homes
- Bathrooms & en suites
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Avoid scourers and strong chemicals on sealant
- Look at the sealant regularly in the first couple of years
- Get a leaking seal dealt with straight away
- Use the extractor fan every time you shower
Wipe the sealant with warm soapy water. Avoid abrasive pads and strong solvents, which can damage the surface.
Report failed sealant to the builder while you’re in the snagging period. After that, putting it right may fall to you.
Places near Bexley
What else we do in Bexley
The process
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for most snagging lists, longer for a run of plots. In Bexley, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out.
- We clean out the dust and grit left from the build.
- We prime where needed and apply a sealant suited to each joint.
- We tool every joint neatly and tell you when each area can be used.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
- Tell us if parking is tricky
How to get a quote
We quote each job on its own, so start by telling us what you need. Just ring 0345 464 0079 or drop us an email with the details and send photos if you have them.
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What the job involves on each surface
Show homes
Tired or marked sealant in a show home can be renewed. We cut it out and reseal neatly.
Plot handovers
Developers can send the plot schedule and specification and we’ll quote. We seal bathrooms, kitchens, frames and floors as agreed.
Your questions about new build mastic in Bexley
Is parking a problem for a job in Bexley?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Can you do new build mastic in Bexley?
Yes. We work across London and the South East, and Bexley is part of that. Just call 0345 464 0079 or send us an email with a few details of the job.
Where are you based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
What information do you need?
Only a few details: the address or postcode, what’s wrong and any access issues. Then ring 0345 464 0079 or send us an email.
What sealant do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
How do I get a quote for new build mastic in Bexley?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or email us and tell us what needs doing and where.
Do you guarantee your work?
Yes: twelve months. If anything isn’t right with the work within the year, let us know and we’ll sort it.
New build mastic in Bexley: local notes
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. Rainfall in the South East is lower than in much 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 Bexley station, the sealant around baths, showers and frames is worth checking in the first year or two.
Bexley is about 3 miles east of Eltham, in Greater London. Bexley gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 764 towns and villages across Greater London. We also work in London, about 11 miles from Bexley.
We cover every part of the DA5, DA6, DA14 and DA1 postcode area for new build mastic. That includes homes and businesses on Bexley High Street, Camden Road and The North Glade. Being close to the A2018 and B2210, Bexley is easy for our applicators to reach. We also cover Blendon (1 mile north-west), North Cray (1 mile south), Bexleyheath (1 mile north), Upton (1 mile north) and Coldblow (1 mile east). Larger places within reach include London (11 miles west), City of Westminster (13 miles west), Marylebone (13 miles north-west), Kensington (15 miles west), St Pancras (12 miles north-west) and Shoreditch (11 miles north-west).
Near you in Bexley
Typical jobs here are in homes near St Columba's Catholic Boys' School, Danson Park and Townley Grammar School and the streets around them. Bexley’s nearest station is Bexley station, about 0.6 miles east. Nearby you will also find Broadway Shopping Centre (1 mile north-east) and Bexley Museum (1.1 miles east). The countryside around Bexley includes Summer Hill and Wansunt Pit.
Landlords, agents and businesses in Bexley
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
What we are called out for in Bexley
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. As it does, timber shrinks and joints open.
Keep an eye out for these signs:
- Beads laid onto grit and dust from the build
- Untidy sealant flagged on a snagging list
- Cracked sealant around new window and door frames
- Gaps between new skirting and floors
Bexley is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- Is the old sealant removed completely?
- Whether they’re fully insured
- How the joint is cleaned and prepared
- What happens if the job turns out different