Greater London · England
New Build Mastic in South Lambeth
Problem with your new-build sealant joints in South Lambeth? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Skirting joints opening in the first winter
- Gaps opening as the house dries out and settles
- New-build shower sealant that has already split
How we handle new build mastic in South Lambeth
Some owners wait for the first year’s movement before having joints redone. That makes sense for small gaps that are just cosmetic, but a failed shower or bath seal shouldn’t wait. Common call-outs are for smeared, uneven beads picked up at snagging and plot mastic for developers ahead of handover, across windows & doors, plot handovers and kitchens.
Across London, commercial floors have movement joints that break down under heavy foot traffic, and new homes need their plot mastic finished properly before handover, in South Lambeth and beyond.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or send us an email.
- Where
- South Lambeth (SW8, SW9, SW1P)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How we quote for new build mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- Mould in or behind the old joints
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- If it’s domestic, commercial or a hotel
- The rough size of the job
- How we’d reach the joints
- Any previous sealing or DIY work
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
How the visit works
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to several days, depending on the number of plots in most cases. In South Lambeth, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- Each joint is checked for movement before we start.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
How to prepare
- Let us know about stairs, lifts or work at height
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
We don’t publish a price list, because every job is different. Instead, we give you a clear price for your job. To get started, ring 0345 464 0079 or email us.
Advice
What new build mastic looks like in South Lambeth
Many of London’s new homes are flats in bigger developments, where snags may need reporting through the developer or the managing agent. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
As a London address, South Lambeth can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
South Lambeth is about 1 mile south-west of Kennington, in Greater London. We provide new build mastic to homes and businesses in South Lambeth and the surrounding area, as part of our work across Greater London. Our area takes in 764 places across Greater London, from the larger towns to small villages.
Postcode districts we cover here for new build mastic: SW8, SW9 and SW1P. You will find streets such as Lett Road, Rita Road and Lorn Road, all of which we cover. Main roads around South Lambeth include the A203, which makes travel easy. Neighbouring places we cover for new build mastic include Little Portugal (1 mile south), Kennington (1 mile north-east), Oval (1 mile north-east), North Brixton (1 mile south-east) and Stockwell (1 mile south). Larger places within reach include City of Westminster (3 miles north-west), Marylebone (3 miles north), Kensington (4 miles north-west), St Pancras (3 miles north), Shoreditch (4 miles north-east) and Walthamstow (9 miles north-east).
Near you in South Lambeth
We work in homes and buildings around Lambeth Palace Library, Vauxhall Park and Durand Academy, among other places. Nearby too are The Canton Arms (under half a mile south-east) and Platanos College (within half a mile south-east). The closest station to South Lambeth is Vauxhall station, roughly 0.6 miles north. A little further out are Gabriel's Wharf (2.2 miles north) and The Gordon Hospital (1.1 miles north-west). Green spaces nearby include Bellenden Road Nature Garden and Battersea Park Lake.
Common problems we fix in South Lambeth
Once people move in, baths and trays take weight and bed down. A bath sealed empty drops slightly when filled, straining the joint and can tear.
Most people get in touch when they notice something like this:
- Skirting joints opening in the first winter
- Sealant that never bonded to the surface
- Messy sealant that spoils new finishes
- New-build shower sealant that has already split
If you’ve bought a new home near Vauxhall station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- How the colour is chosen
- How much experience the applicator has
- Is the old sealant removed completely?
- Which sealant they’ll use, and why
Towns and villages near South Lambeth
More services for South Lambeth
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Broken tiles or a split tray
- Leaks from pipes, valves or wastes, which need a plumber
- Baths and trays that move too much for sealant to cope with
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Where we work in South Lambeth
- Windows & doors
- Kitchens
- Bathrooms & en suites
- Show homes
- Plot handovers
- Skirting & floors
Leave it or put it right?
Sealant done properly at handover means fewer callbacks. Every return visit for a failed seal takes time, and they’re avoidable with good preparation. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in South Lambeth, the repair is bigger than a sealant job.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why book with us
- A choice of colours where the product allows
- 20+ years of sealant experience
- A sealant colour to suit the surroundings
- We agree the colour with you first
See our cost guide and customer reviews.
Your questions about new build mastic in South Lambeth
Can parking be tricky for a visit in South Lambeth?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Can you do new build mastic in South Lambeth?
Yes, South Lambeth is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Can you work from my snagging list?
Yes. Send the list and a few photos of the sealant items. We’ll tell you if anything on it isn’t a sealant job.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We will tell you what we are using and why.
How long will you be here?
Most jobs take anything from a few hours to several days, depending on the number of plots, including preparation and clearing up. Your quote will say how long we expect yours to take.
I rent my home. Can I book you?
Of course. Ask your landlord first, and we can send them the quote if that helps.
Where do you work from?
Our base is in Crawley, and we work across South East England, London and Scotland.
Do you guarantee your work?
Yes, always. Each job is guaranteed for twelve months, wherever you are.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.