Greater London · England
Old Chiswick New Build Mastic
Our applicators work in Old Chiswick on plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly.
- Gaps between new skirting and floors
- Second-fix sealing on new plots
- Sealant applied over dusty or wet surfaces
New build mastic in Old Chiswick, done properly
We work in new homes and on new-build sites across Old Chiswick. One shower or a whole phase of plots, the method doesn’t change: cut out, clean, prime where needed and reseal neatly. We work on kitchens, bathrooms & en suites and show homes, and common reasons people get in touch are smeared, uneven beads picked up at snagging and kitchen sealant that has pulled off the wall.
New flats are going up across London, many of them in larger developments. Snagging there often goes through the developer or managing agent, and shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
Big or small, you get the same one-year guarantee in Old Chiswick and across Greater London.
- Location
- Old Chiswick (W4, SW13, W6)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need new build mastic in Old Chiswick
A new house holds a lot of water from the build, which takes a year or two to dry out. As it does, timber shrinks and joints open and the sealant has to cope with the movement.
Look out for any of the following:
- Cracks appearing as a new home settles
- Sealant applied over dusty or wet surfaces
- Smeared, uneven beads picked up at snagging
- Shower seals failing in the first year or two
As a London address, Old Chiswick can be tricky for parking: let us know about parking bays, permits or a driveway.
Comparing quotes
- What happens if they find a problem under the old sealant
- Whether VAT is included
- What insurance they hold
- How much experience the applicator has
Surface by surface
Bathrooms and en suites
Shower trays in new homes often move slightly in the first year. The joint is stripped back before the new bead goes in with baths filled first.
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Joints are prepared properly before sealing to keep callbacks down.
Landlord and commercial work in Old Chiswick
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
If you manage several properties in or around Old Chiswick, several properties can be quoted together. Send us the addresses and the work at each, and pictures by email help.
Joints and finishes in Old Chiswick homes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. 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 Chiswick station, the sealant around baths, showers and frames is worth checking in the first year or two.
Old Chiswick is about 2 miles south of Acton, in Greater London. For new build mastic in and around Old Chiswick, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We’re based in Crawley and cover Greater London, Old Chiswick included. Old Chiswick is one of 764 places in Greater London where we work for new build mastic. For nearby work, see our London page (7 miles or so).
Here we cover the W4, SW13 and W6 postcode area for new build mastic. We cover properties on Short Road, Quick Road and Paxton Road. We also cover the places around Old Chiswick: Turnham Green (1 mile west), Chiswick (1 mile north-west), Grove Park (1 mile west), Barnes (1 mile south) and Hammersmith (1 mile north-east). Within a short drive, we also cover London (7 miles east), City of Westminster (5 miles north-east), Marylebone (5 miles north-east), St Pancras (6 miles north-east), Shoreditch (8 miles east) and Walthamstow (12 miles north-east).
Landmarks near Old Chiswick
In Old Chiswick, that means homes and buildings near George and Devonshire pub, The Swedish School and Polish Library POSK in London. Other local landmarks include Turnham Green (0.8 miles north-west) and Chiswick School (0.5 miles south-west). Old Chiswick’s nearest station is Chiswick station, roughly 0.8 miles south-west. A little further out are Kurdish Museum Library and Archive (0.7 miles north-east) and West London Hospital (1.3 miles east). For a walk, there’s Campden Hill and Kew Gardens Lake.
How it works
We bring everything the job needs with us, so you do not need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. It normally takes anything from a few hours to several days, depending on the number of plots. For a job in Old Chiswick, parking and access are the things to plan: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First we work through your snagging list or plot schedule with you.
- We cut out every bit of the failed or messy sealant.
- Surfaces are cleaned of building dust and primed where needed.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you’re given the cure time.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
How to get a quote
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, call 0345 464 0079 or drop us an email.
Read more
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Damaged fittings that need replacing
- A tray or bath that isn’t properly supported, until it’s fixed
- Leaks from pipes, valves or wastes, which need a plumber
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Joints and surfaces we work on
- Skirting & floors
- Plot handovers
- Windows & doors
- Bathrooms & en suites
- Kitchens
- Show homes
What affects the cost of new build mastic
There’s no set price list, because no two jobs are the same. What we look at:
- The type of sealant required
- How much there is to do
- Whether the work is at height
- Whether old sealant or filler has to be cut out
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Asking for a quote
Before you ask for a quote, have a think about:
- The rough size of the job
- If someone has resealed it before
- The problem you’ve noticed
- Where the job is, and your postcode
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
Old Chiswick questions
Can you do new build mastic in Old Chiswick?
Yes. Our work covers London and the South East, and Old Chiswick is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you help a landlord with a rental near Chiswick station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Can new sealant go on top of the old bead?
No. We always remove the existing bead, the joint cleaned and primed where needed, before resealing.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours in a single home. We will give you a better idea when we quote.
Do you take on second-fix sealing for builders?
Yes. We work through plots to your schedule, room by room. Get in touch with the number of plots and the scope for a clear quote.
When is the best time to reseal in a new build?
It depends on whether water is getting through. Failed seals in wet areas need doing now, while small cosmetic gaps can wait a while.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Why it’s worth doing now in Old Chiswick
It often makes sense to do all the sealant items on a snagging list together. It’s one visit, one quote and one set of cure times to plan around. 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 Old Chiswick, the repair is bigger than the sealant job would have been.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Why Old Chiswick clients choose us
- Colour picked to suit the job
- Anti-fungal silicone where joints get wet
- 180+ five-star Google reviews
- Colour agreed with you before any work starts
Take a look at what affects the cost or customer reviews.