Greater London · England
Strand-on-the-Green New Build Mastic
Professional new build mastic in and around Strand-on-the-Green, with old sealant always removed completely.
- Plot mastic for developers ahead of handover
- Kitchen sealant that has pulled off the wall
- Untidy sealant flagged on a snagging list
New build mastic for homes and businesses in Strand-on-the-Green
New homes move as they dry out. Timber shrinks, plaster dries and baths and trays bed down, and sealant applied in a hurry at handover can split. We work on windows & doors, kitchens and plot handovers, and people most often call us about shower seals failing in the first year or two and plot mastic for developers ahead of handover.
Much of London’s new housing is flats 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.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Where
- Strand-on-the-Green (W4, TW9, TW8)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in Strand-on-the-Green
Not every new-build joint gets the right sealant: caulk where water collects, or a rigid product on a moving joint. Both fail early.
It’s worth asking for a quote if you see:
- Gaps behind new kitchen upstands
- Plot mastic for developers ahead of handover
- Cracked sealant around new window and door frames
- Gaps between new skirting and floors
Strand-on-the-Green is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Comparing quotes
- What happens if the job turns out different
- What preparation is included
- Whether they’re fully insured
- What the quote includes, VAT included or not
Why act early in Strand-on-the-Green
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 for the lot. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, call 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
What you get with us
- We leave the area clean and tidy
- Arbo and Everbuild products
- Colour agreed with you before work begins
- Over 20 years’ experience
Take a look at how sealant jobs are priced or customer reviews.
What the job involves on each surface
Skirting and floors
New homes often develop a gap between skirting and floor. A flexible sealant closes it without cracking like caulk.
Kitchens
New-kitchen sealant is often applied in a rush. We take it out and reseal neatly, colour-matched where it shows.
Joints and finishes in Strand-on-the-Green homes
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. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or 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.
Strand-on-the-Green is about 2 miles south of Acton, in Greater London. For new build mastic in and around Strand-on-the-Green, please call 0345 464 0079 or send us an email for a quick quote. We cover Greater London from our Crawley base, Strand-on-the-Green included. Our area takes in 764 places across Greater London, large and small. For nearby work, see our London page, about 8 miles away.
All of W4, TW9 and TW8 is within our area for new build mastic. New build mastic is available to properties on Kew Road, Maze Road and Kent Road and the roads around them. Strand-on-the-Green is on the A3000, which makes it straightforward to reach. Other places close to Strand-on-the-Green include Kew (1 mile south), Grove Park (1 mile east), Gunnersbury (1 mile north), North Sheen (1 mile south) and Turnham Green (1 mile east). Larger places within reach include London (8 miles east), City of Westminster (6 miles east), Marylebone (6 miles east), Kensington (3 miles east), St Pancras (7 miles north-east) and Shoreditch (9 miles east).
Near you in Strand-on-the-Green
We work in homes and buildings around Chiswick School, Kew Green and Bull's Head pub, among other places. You’ll also find Library for Iranian Studies (1.6 miles north) and Kew College Prep (within half a mile south-west). The closest station to Strand-on-the-Green is Chiswick station, roughly 0.5 miles south-east. Well-known places in the area include Livat Hammersmith (2.2 miles east) and Barnes Hospital (1.5 miles south-east). Not far away are Richmond Hill and Kew Gardens Lake.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
What we do, step by step
The work is kept neat and contained to the joints we’re treating. The job usually takes anything from a few hours to several days, depending on the number of plots, and we tell you how long to leave it before we go. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Strand-on-the-Green. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely, with no layer left behind.
- 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.
Preparing for the visit
- Mention any parking rules near the property
- Mention if the joints have been sealed before
- Keep children and pets away from the work area
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, call 0345 464 0079 or drop us an email.
Related advice
Your questions about new build mastic in Strand-on-the-Green
Is parking an issue for new build mastic in Strand-on-the-Green?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you cover Strand-on-the-Green for new build mastic?
Yes. Our work covers London and the South East, and Strand-on-the-Green is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will tell you how long to leave the joint before we leave.
How do I get a quote for new build mastic in Strand-on-the-Green?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Will you just run a new bead over the existing one?
No. We always remove the existing bead, then clean and prime the joint, and a new bead applied.
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Put sealant faults on your snagging list early
- Avoid running a DIY bead over the old one
- Wait for the cure time before using a resealed shower
- Clean sealant with mild detergent, not abrasives
Avoid standing on the rim of the bath or the edge of the tray while the sealant cures. Report any movement in a bath or tray.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Catching it early keeps the fix to the sealant and the new finishes intact.
Places near Strand-on-the-Green
Other services in Strand-on-the-Green
Quotes for new build mastic in Strand-on-the-Green
We don’t publish a price list. What we look at:
- The product the joint needs
- Mould in or behind the old joints
- How many rooms, windows or areas are involved
- Whether the work is at height
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What we need to know
You do not need to know the technical terms. It helps if you can tell us:
- Where the property is
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
- The rough size of the job
For new build mastic in Strand-on-the-Green, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.