Greater London · England
New Build Mastic in Fulwell
New build mastic for Fulwell, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps behind new kitchen upstands
- Internal frame sealant that has split
- New-build shower sealant that has already split
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
How we handle new build mastic in Fulwell
Developers send us the plot schedule and we work through it. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover with a sealant suited to each area. If you have gaps between new skirting and floors and gaps opening as the house dries out and settles, we can help.
Across London, commercial floors have movement joints that break down under heavy foot traffic, while new homes need a neat, sound finish around frames, baths and kitchens before handover, in Fulwell and beyond.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Fulwell (TW11, TW2, TW12)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Fulwell
What else we do in Fulwell
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Check bath and shower seals every few months as the house settles
- Ventilate bathrooms well, especially in the first year
- Avoid scourers and strong chemicals on sealant
- Report sealant problems to your builder during the snagging period
Leave the sealant for the cure time we give you before showering or bathing. Most silicones need around a day to cure enough for use.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant and protects the rest of the house.
Joints and finishes in Fulwell homes
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. Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent.
If you’ve bought a new home near Fulwell station, the sealant around baths, showers and frames is worth checking in the first year or two.
Fulwell is about 1 mile south of Twickenham, in Greater London. Homes, rented property, offices and hotels in Fulwell can book us for new build mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our area takes in 764 places across Greater London. You can also see our page for London, about 12 miles away.
Work in TW11, TW2 and TW12 is quoted and booked the same way as anywhere else. Streets in the area include Mays Road, Royal Road and Grove Road. Being close to the A311 and A313, Fulwell is simple for us to get to. If you’re just outside Fulwell, we cover Strawberry Hill (1 mile north-east), Hampton Hill (1 mile south-west), Teddington (1 mile south-east), Twickenham (1 mile north) and Whitton (1 mile north). We also work in nearby towns such as London (12 miles 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).
Near you in Fulwell
We work in homes and buildings around Pope's Grotto pub, Thames Valley Grammar School and Waldegrave School, among other places. There’s a railway station in Fulwell itself: Fulwell station. Well-known places in the area include Treaty Centre (2.4 miles north) and Teddington Memorial Hospital (0.7 miles south-east). For a walk, there’s Kew Gardens Lake and Ham Lands.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
If you manage several properties in or around Fulwell, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
What we cannot put right
In fairness, some problems need a different trade:
- Deciding who is responsible under a builder’s warranty
- Broken tiles or a split tray
- Leaking fittings rather than failed sealant
If you’re not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer before booking.
What we seal
- Kitchens
- Skirting & floors
- Bathrooms & en suites
- Windows & doors
- Show homes
- Plot handovers
Surface by surface
Plot handovers
Send us the schedule and any sealant specification and we will quote. Sealant work across the plot is covered as agreed.
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.
How the visit works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for most snagging lists, longer for a run of plots. In Fulwell, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- We clean off dust from the build and prime the surfaces where the product needs it.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
Preparing for the visit
- Tell us if parking is tricky
- Let us know about earlier repairs to the joints
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
Need a quote? Please phone 0345 464 0079 or send us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Do you need new build mastic in Fulwell?
Later trades and the final clean can damage fresh sealant. If it’s disturbed before curing, the joint can be left weak.
These are the problems we’re asked about most:
- Messy sealant that spoils new finishes
- Skirting joints opening in the first winter
- Leaking shower tray seals in a new home
- Worktop and upstand sealant coming away
Fulwell is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
What your quote should include
- How the colour is chosen
- Is VAT in the price?
- What happens if they find a problem under the old sealant
- Is the old sealant removed completely?
Fulwell questions
Is Fulwell in your area for new build mastic?
Yes. We work across London and the South East, and Fulwell is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
I let a flat near Fulwell station. Can you help?
Yes. We work for letting agents and landlords as well as householders. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Do you work for developers?
Yes. We carry out plot mastic and second-fix sealing for builders and developers. Send the schedule and any specification and we’ll give you a quote.
What should I tell you?
A short description and the location. We’ll ask anything else we need to know.
How long does the job take?
As a guide, most jobs take anything from a few hours to several days, depending on the number of plots. Larger jobs naturally take longer, and we will tell you how long to expect.
Is there a guarantee?
Yes, for a year. If anything is not right with the work within the year, let us know and we’ll sort it.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.