Greater London · England
New Build Mastic in Teddington
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Teddington and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Joints pulling apart as timber shrinks
- Sealant work across a run of new homes
- Kitchen sealant that has pulled off the wall
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
New build mastic in Teddington
In a new home, every joint should have a clean, even bead. When the finish is smeared, patchy or already cracking, it’s worth putting right early, before water gets into the floor or walls. We work on plot handovers, bathrooms & en suites and windows & doors, and people most often call us about messy sealant that spoils new finishes and second-fix sealing on new plots.
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 shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
All of our work is guaranteed for twelve months, in Teddington and everywhere else we cover.
- Where
- Teddington (TW11, TW12, TW2, TW1)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
New build mastic around Teddington
Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
As a London address, Teddington can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Teddington is about 5 miles west of Wimbledon, in Greater London. Homes, rented property, offices and hotels in Teddington is covered for new build mastic. The work is guaranteed for a year. Teddington is one of 764 towns and villages in Greater London where we work for new build mastic. We also work in London, about 11 miles from Teddington.
Here we cover the TW11, TW12, TW2 and TW1 postcode area for new build mastic. We cover properties on Station Road, High Street and Church Road. Teddington is on the A311 and A313, so it’s easy for us to get to with everything needed for new build mastic. Nearby, we also carry out new build mastic in Strawberry Hill (1 mile north), Fulwell (1 mile north-west), Hampton Hill (1 mile west), Ham (1 mile north-east) and Eel Pie Island (1 mile north). Within a short drive, we also cover London (11 miles north-east), City of Westminster (10 miles north-east), Marylebone (10 miles north-east), Kensington (8 miles north-east), St Pancras (12 miles north-east) and Shoreditch (13 miles north-east).
Landmarks near Teddington
Typical jobs here are in homes near Bushy Park, Turing House School and Newland House School, among other places. Teddington has its own railway station: Teddington station. Well-known places in the area include Teddington Memorial Hospital (within half a mile west) and Eel Pie Island Museum (1.5 miles north). Not far away are Ham Lands and Kew Gardens Lake.
Do you need new build mastic in Teddington?
A new house holds a lot of water from the build, and it dries out over the first couple of years. As it does, timber shrinks and joints open.
Any of these means the joints need attention:
- Frame joints opening as the plaster dries
- Sealant work across a run of new homes
- New-build shower sealant that has already split
- Joints pulling apart as timber shrinks
For new homes near Teddington station, it’s worth checking the sealant early, while snags are still fresh.
Comparing quotes
- What insurance they hold
- How much experience the applicator has
- Whether all the old sealant comes out first
- What product goes in the joint
Teddington: your questions answered
Can parking be tricky for a visit in Teddington?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Is Teddington in your area for new build mastic?
Yes, Teddington is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. Indoors, that normally means someone at home.
Can you match the sealant colour to my new kitchen or bathroom?
Most bathroom joints are white or clear, but sealant comes in other colours too. We choose one to suit the room.
Do you work for developers?
Yes. We carry out plot mastic and second-fix sealing for builders and developers. Send us the plot schedule and we’ll quote.
Is it worth resealing while the house is still settling?
That depends on the joint. Failed seals in wet areas need doing now, while small cosmetic gaps can wait a while.
Can new sealant go on top of the old bead?
No. New silicone will not bond to old silicone, so it soon lifts and traps water. We cut the old bead out completely.
Is it normal for sealant to crack in a new home?
There are normally two causes: movement as the house dries and settles, and sealant laid onto dust without primer. A proper reseal deals with both.
How the visit works
When we arrive, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before any work starts. Most jobs take a few hours for most snagging lists, longer for a run of plots. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Teddington. It helps if you can point us to a visitor permit or a bay close to the door.
- Each joint is checked for movement before any work starts.
- 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.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Keep pets and children clear of the area while we work
- Mention any tricky access
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, ring 0345 464 0079 or drop us an email.
Advice
Nearby places to Teddington
More services for Teddington
Leave it or put it right?
For developers, getting the sealant right first time saves return visits. Snagging visits for failed sealant cost time on every plot. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Teddington, the repair is bigger than the sealant job would have been.
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or send us an email and we will talk you through it.
Why choose Mr Mastic in Teddington
- Sanitary silicone with an anti-fungal additive in wet areas
- Over 20 years’ experience
- Arbo and Everbuild products
- Homes, businesses and hotels
Take a look at what affects the cost or customer reviews.
What sealant work can’t fix
We will always be straight with you, so here’s what sealant cannot fix:
- Deciding who is responsible under a builder’s warranty
- Structural cracks in walls or ceilings
- Plumbing faults behind the sealant
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
Where we work in Teddington
- Skirting & floors
- Kitchens
- Plot handovers
- Bathrooms & en suites
- Windows & doors
- Show homes
How the job changes by surface
Show homes
We can refresh show-home sealant that has discoloured or been knocked. The old bead comes out and a clean new one goes in.
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.