Greater London · England
Kingston upon Thames New Build Mastic
Specialist new build mastic for Kingston upon Thames: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Beads laid onto grit and dust from the build
- Untidy sealant flagged on a snagging list
- Leaking shower tray seals in a new home
New build mastic for homes and businesses in Kingston upon Thames
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. In both, preparation makes the difference. If you have new-build shower sealant that has already split and cracked sealant around new window and door frames, we can put it right, whatever the surface.
From brand-new flats to converted terraces with new flooring, London has every kind of floor. Wherever a floor meets a wall, a skirting or a threshold, the joint has to allow for movement.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Where
- Kingston upon Thames (KT2, KT1, TW10)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Surface by surface
Plot handovers
Plot mastic is carried out to the developer’s schedule. Each joint is cleaned and primed where needed to keep callbacks down.
Skirting and floors
Floors and skirting move as the house dries and the heating runs. We use a flexible product rather than caulk painted or coloured to suit.
What affects the cost of new build mastic
Your quote is based on your job. We take into account:
- How much there is to do
- The product the joint needs
- When we can work, for business premises
- Whether there’s mould to deal with
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 make a difference.
Asking for a quote
You do not need to know the technical terms. It helps if you can tell us:
- Any previous sealing or DIY work
- The address or postcode of the job
- The problem you’ve noticed
- Any access issues, like height or stairs
Want a quote for new build mastic? Please call 0345 464 0079 or email us with a few details. We’ll explain what we’d do and give you a clear quote before work begins.
Also near Kingston upon Thames
More services for Kingston upon Thames
What sealant work can’t fix
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Damaged fittings that need replacing
- Your warranty claim itself, which is between you and the builder
- Structural cracks in walls or ceilings
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Bathrooms & en suites
- Kitchens
- Show homes
- Plot handovers
- Windows & doors
- Skirting & floors
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right 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.
When to call us in Kingston upon Thames
Later trades and the final clean can damage fresh sealant. A bead disturbed before it has cured may never seal properly, and the problem shows up after you move in.
The problems people normally mention when they call include:
- Cracks appearing as a new home settles
- Shower seals failing in the first year or two
- Sealant that never bonded to the surface
- Plot mastic for developers ahead of handover
Kingston upon Thames is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
What to look for in a quote
- Whether they seal over old material or remove it
- What happens if the job turns out different
- When the joint can take water or movement
- Is VAT in the price?
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours in a single home and we leave things clean and tidy. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us 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.
- Joints are vacuumed and cleaned of building dust.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
Ask for a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, ring 0345 464 0079 or drop us an email.
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New build mastic around Kingston upon Thames
Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you’ve bought a new home near Kingston station, the sealant around baths, showers and frames is worth checking in the first year or two.
Kingston upon Thames is about 7 miles south-west of Kensington, in Greater London. Whether you’re in the middle of Kingston upon Thames or further out, we cover new build mastic for every kind of property. 764 places in Greater London are on our list. London is on our list too, around 11 miles away.
Our applicators cover all of the KT2, KT1 and TW10 postcode area for new build mastic and the streets around it. Whether your property is on Sigrist Square, Old London Road and London Road or a nearby road, our applicators can take on the job. Kingston upon Thames is on the B3365, so it’s easy for us to get to. Nearby, we also carry out new build mastic in Norbiton (1 mile east), Coombe (2 miles east), New Malden (2 miles south-east), Coombe Hill (2 miles north-east) and Motspur Park (2 miles east). We also work in nearby towns such as London (11 miles north-east), City of Westminster (9 miles north-east), Marylebone (10 miles north-east), Kensington (7 miles north-east), St Pancras (11 miles north-east) and Shoreditch (12 miles north-east).
What’s near Kingston upon Thames
In Kingston upon Thames, that means homes and buildings near Canbury Gardens, The Grey Horse pub and Kingston Grammar School. Kingston upon Thames has its own railway station: Kingston station. Other landmarks nearby include Eel Pie Island Museum (2.6 miles north-west) and Kingston Hospital (0.7 miles east). The countryside around Kingston upon Thames includes Rose Walk and Kingston Hill Road area.
Looking after it afterwards
After the cure time, these simple habits help:
- Open a window or run the fan after bathing
- Record problems with dated pictures
- Act quickly if a seal starts to leak
- Follow the cure time we give you
Clean the sealant with a mild detergent and a soft cloth. Avoid abrasive pads and strong solvents as they wear the bead.
Lifting sealant traps moisture and mould behind it. Dealing with it before it goes black saves a harder job later.
FAQs for Kingston upon Thames
Is Kingston upon Thames in your area for new build mastic?
Yes. We work across London and the South East, and Kingston upon Thames is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing, and we will send you a clear quote.
Can parking be tricky for a visit in Kingston upon Thames?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Will you just run a new bead over the existing one?
No. The old sealant is cut out fully, then clean and prime the joint, before resealing.
How much does new build mastic cost in Kingston upon Thames?
It depends on the job, so we quote each one individually. To get one, ring 0345 464 0079 or email us with a short description of the job.
Where do you work from?
Our base is in Crawley, and we work across South East England, London and Scotland.
What do you need from me for a quote?
Just the basics: where it is, what you’ve noticed and how we reach it. Then ring 0345 464 0079 or drop us an email.
What colour sealant will you use?
That depends on what the joint meets: white or clear for most sanitary joints, colours for worktops, floors and frames. We’ll agree it with you first.
Should I go to my builder first?
Start with your builder while their snagging or warranty period runs. After that, or if their repair keeps failing, we can do it with our 12-month guarantee.