Greater London · England
New-build mastic & snagging in Bexley Riverside, Greater London
New build mastic in Bexley Riverside from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Shower seals failing in the first year or two
- Skirting joints opening in the first winter
- Sealant that never bonded to the surface
About our new build mastic in Bexley Riverside
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, so sealant that was laid quickly before handover often cracks. We’re often asked to deal with kitchen sealant that has pulled off the wall and internal frame sealant that has split, on skirting & floors, plot handovers and windows & doors.
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.
Whatever the size of the job, you get the same 12-month guarantee in Bexley Riverside and across Greater London.
- Where
- Bexley Riverside (DA8, DA7, DA1)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in Bexley Riverside
We work for landlords and letting agents as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Honest limits
It helps to know what we can’t do:
- Your warranty claim itself, which is between you and the builder
- Settlement cracks that need a surveyor
- Baths and trays that move too much for sealant to cope with
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Show homes
- Skirting & floors
- Bathrooms & en suites
- Kitchens
- Plot handovers
- Windows & doors
Bexley Riverside: your questions answered
Can you help a landlord with a rental near Barnehurst station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before we start.
Is parking a problem for a job in Bexley Riverside?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Do you take on second-fix sealing for builders?
Yes. We take on second-fix sealant work across new plots. Good preparation keeps snagging to a minimum.
Do you remove the old sealant?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
Can you reseal over the builder’s sealant?
No. New silicone won’t bond to old silicone, so sealing over the top fails quickly. The old sealant always comes out first.
Places near Bexley Riverside
What else we do in Bexley Riverside
Joints and finishes in Bexley Riverside homes
Rainfall in the South East is lower than in much of the UK, 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 snagging may go through the developer or managing agent.
As a London address, Bexley Riverside can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. If you’ve bought a new home near Barnehurst station, the sealant around baths, showers and frames is worth checking in the first year or two.
Bexley Riverside is about 3 miles north-west of Dartford, in Greater London. Wherever you are in the DA8 postcode area, we cover new build mastic for homes and businesses. Our area takes in 764 places across Greater London. We also work in London, around 12 miles away.
Every address in DA8, DA7 and DA1 is within our area for new build mastic. Whether your property is on Mill Road, Hurst Road and Bexley Road or anywhere close by, we can help. Nearby, we also carry out new build mastic in Northumberland Heath (1 mile north-west), Barnehurst (1 mile south), Erith (1 mile north), North End (1 mile east) and Slade Green (1 mile east). Further out, we also cover London (12 miles west), City of Westminster (14 miles west), Marylebone (14 miles west), St Pancras (13 miles west), Shoreditch (11 miles west) and Walthamstow (12 miles north-west).
Around Bexley Riverside
Locally, jobs take us to homes and businesses close to Braeburn Park, The Royal Oak pub and Trinity School, among other places. The nearest railway station is Barnehurst station, about 0.6 miles south-west of the centre. A little further out are Broadway Shopping Centre (1.4 miles south-west) and Erith and District Hospital (0.5 miles north). The countryside around Bexley Riverside includes Wansunt Pit.
Why act early in Bexley Riverside
A hairline gap at a skirting can wait, but water getting through cannot. If you are unsure which you have, call 0345 464 0079 or send us an email with photos and we will give you a straight answer. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Bexley Riverside, the repair is bigger than the sealant job would have been.
Doing several joints on one visit is generally more efficient than separate visits. We will give you a clear price for the lot.
Why us?
- Fully insured
- Approved under the ARBOMaster scheme
- 4.9 on Google from 180+ five-star reviews
- Homes, businesses and hotels
See what affects the cost or our reviews.
How the job changes by surface
Windows and doors
Draughts around new frames are often a sealant gap. We look at the joints and reseal where needed.
Kitchens
Beside the sink, the joint takes water every day. We use a sealant suited to kitchens.
How we quote for new build mastic
We quote each job individually. These are the things that affect it:
- The number and length of the joints
- The product the joint needs
- How many areas need sealing
- Mould in or behind the old joints
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Asking for a quote
Before you ask for a quote, have a think about:
- A few pictures by email, if you can
- What’s wrong with the joints now
- Where the job is, and your postcode
- How we’d reach the joints
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. When it suits you, call 0345 464 0079 or drop us an email.
Can I do it myself?
If you are 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 does not work out, we can still put it right.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
How it works
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours in a single home from start to finish. 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 start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out down to clean surfaces.
- 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.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
How to get a quote
For a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before any work starts.