Greater London · England
New Build Mastic in Summerstown
Specialist new build mastic for Summerstown: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Gaps between new skirting and floors
- Internal frame sealant that has split
- Sealant applied over dusty or wet surfaces
About our new build mastic in Summerstown
Our new-build work comes in two parts: plot mastic for developers, and putting right failed sealant for people who’ve bought a new home. In both, preparation makes the difference, because that’s what rushed new-build sealant usually lacks. If you have gaps opening as the house dries out and settles and gaps behind new kitchen upstands, we can put it right.
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 failed shower seals, open skirting joints and gaps at thresholds are typical.
Your job is guaranteed for a year, as with all our work.
- Where
- Summerstown (SW17, SW18, SW19)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
There is not much for you to do on the day. Show us the job and we will take it from there. The job generally takes anything from a few hours to several days, depending on the number of plots. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We go through the snagging list or plot schedule and agree the joints to do.
- We cut out every bit of the failed or messy sealant.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- We check every joint and tell you how long each needs to cure.
How to prepare
- Clear items away from the joints we are working on
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
Ask for a quote
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or drop us an email and describe the job.
Advice
Why deal with it now?
A quick bead over the top of the old sealant can look fine at first, but it will not bond to the old layer. Taking it all out and starting again is the only way to get a lasting seal. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Summerstown, the repair is bigger than a sealant job.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why book with us
- ARBOMaster approved applicator
- Trusted Arbo and Everbuild sealants
- We agree the colour with you first
- Any old sealant cut out fully, not covered over
Take a look at our cost guide and our reviews.
When to call us in Summerstown
Later trades and the final clean can damage fresh sealant. If it’s disturbed before curing, the joint can be left weak, and the problem shows up after you move in.
People generally contact us when they notice one of these:
- Gaps opening as the house dries out and settles
- Sealant applied over dusty or wet surfaces
- Messy sealant that spoils new finishes
- Frame joints opening as the plaster dries
For new homes near Earlsfield station, it’s worth checking the sealant early, while snags are still fresh.
Before booking anyone
- How long the guarantee is
- Are they insured?
- Who does the work, and how experienced they are
- When the joint can take water or movement
How we quote for new build mastic
The quote reflects the job in front of us. We look at:
- Any mould that needs treating
- The number and length of the joints
- Whether old sealant or filler has to be cut out
- Whether the work is at height
Doing several joints on one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear price for the lot.
What to tell us for a quote
You don’t need to know the technical terms. Just tell us:
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- The type of property
- Pictures of the joints, sent by email
We do not publish a price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To arrange one, call 0345 464 0079 or email us.
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Landlords and agents in Summerstown can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
When something else is needed
Before you book, it’s worth knowing the limits too:
- Broken tiles or a split tray
- Structural cracks in walls or ceilings
- Plumbing faults behind the sealant
If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Windows & doors
- Skirting & floors
- Plot handovers
- Show homes
- Kitchens
- Bathrooms & en suites
Towns and villages near Summerstown
Other services in Summerstown
Surface by surface
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We remove cracked sealant and apply a flexible one in a matching colour.
Questions from Summerstown
Can you help a landlord with a rental near Earlsfield station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you cover Summerstown for new build mastic?
Yes, Summerstown is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll send you a clear quote.
Do you work through snagging lists?
Yes. Send the list and a few pictures of the sealant items, and we’ll quote. We’ll tell you if anything on it isn’t a sealant job.
Is there any odour?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Is there a guarantee?
Yes. Each job is guaranteed for twelve months.
Can you reseal over the builder’s sealant?
No. We always remove the existing bead, then clean and prime the joint, and a new bead applied.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Do you use white or clear sealant?
It depends on the joint: white or clear in most bathrooms, and a colour to suit worktops, frames and floors elsewhere. We’ll agree it with you first.
Joints and finishes in Summerstown homes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent.
As a London address, Summerstown can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Summerstown is about 1 mile north-east of Wimbledon, in Greater London. Anywhere in SW17, our applicators can take on new build mastic. We cover 764 towns and villages across Greater London. You can also see our page for London, roughly 6 miles from Summerstown.
Our applicators cover all of the SW17, SW18 and SW19 postcode area for new build mastic and the streets around it. New build mastic is available to properties on Weir Road, Acuba Road and Mount Road and the roads around them. Main roads around Summerstown include the A218. We also cover Earlsfield (1 mile north), Southfields (1 mile north), Tooting Bec (1 mile south-east), Tooting (1 mile south-east) and South Wimbledon (1 mile south-west). We also work in nearby towns such as London (6 miles north-east), City of Westminster (6 miles north), Marylebone (6 miles north), Kensington (5 miles north), St Pancras (7 miles north-east) and Shoreditch (8 miles north-east).
What’s near Summerstown
Locally, jobs take us to homes and businesses close to Hillcroft School, Leather Bottle pub and King George's Park. The nearest railway station is Earlsfield station, roughly 0.5 miles north. A little further out are Southside Wandsworth (1.4 miles north) and St George's Hospital (0.7 miles south-east). For a walk, there’s Wandle Meadow Nature Park and Battersea Park Lake.