Greater London · England
New Build Mastic in Little Portugal
Plot mastic for developers and snagging failed sealant in new homes for homeowners, landlords and businesses in Little Portugal. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Internal frame sealant that has split
- Shower seals failing in the first year or two
- Kitchen sealant that has pulled off the wall
What we do, step by step
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. Most jobs take a few hours in a single home. In Little Portugal, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First we work through your snagging list or plot schedule with you.
- The old bead comes out in full, with no layer left behind.
- Surfaces are cleaned of building dust and primed where needed.
- 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.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
- Tell us about any water getting in
How to get a quote
Getting a quote is simple: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.
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New build mastic in Little Portugal, done properly
We never seal over a failed new-build bead. Fresh silicone cannot bond to the old layer, so the joint is cut out, cleaned, dried and resealed. Common call-outs are for messy sealant that spoils new finishes and frame joints opening as the plaster dries, on show homes, kitchens and windows & doors.
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, in Little Portugal as anywhere.
Big or small, you get the same 12-month guarantee.
- Where
- Little Portugal (SW9, SW8, SW1P)
- Region
- Greater London
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
If you manage several properties in or around Little Portugal, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
When something else is needed
We will not take on work that will not last, so these are the limits:
- Cracking that points to a structural problem
- Deciding who is responsible under a builder’s warranty
- Cracked trays, tiles or worktops
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think before you book.
Surfaces we seal
- Skirting & floors
- Plot handovers
- Bathrooms & en suites
- Windows & doors
- Show homes
- Kitchens
Towns and villages near Little Portugal
Also in Little Portugal
New build mastic around Little Portugal
Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Little Portugal is in London, so parking needs planning: let us know about parking bays, permits or a driveway. If you’ve bought a new home near Wandsworth Road station, the sealant around baths, showers and frames is worth checking in the first year or two.
Little Portugal is about 1 mile north of Stockwell, in Greater London. We provide new build mastic to homes and businesses in Little Portugal. Little Portugal is one of 764 places in Greater London where we work for new build mastic.
Work in SW9, SW8 and SW1P works the same way as everywhere else we cover. Whether your property is on Kay Road, Lett Road and Rita Road or anywhere close by, we can help. Little Portugal sits on or near the A203, which makes travel easy. We also cover South Lambeth (1 mile north), North Brixton (1 mile east), Stockwell (1 mile south), Kennington (1 mile north) and Oval (1 mile north). Within a short drive, we also cover City of Westminster (3 miles north-west), Marylebone (3 miles north), Kensington (4 miles north-west), St Pancras (4 miles north), Shoreditch (4 miles north-east) and Walthamstow (9 miles north-east).
Landmarks near Little Portugal
Locally, jobs take us to homes and businesses close to Allen Edwards Primary School, Larkhall Park and The Canton Arms. Other local landmarks include Durand Academy (under half a mile east) and Lambeth Palace Library (1.6 miles north). The nearest railway station is Wandsworth Road station, about 0.7 miles south-west of the centre. Well-known places in the area include Type Museum (under half a mile east) and The Gordon Hospital (1.4 miles north-west). Open spaces near Little Portugal include Knight's Hill and Battersea Park Lake.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
What affects the quote in Little Portugal
We quote each job individually. This is what makes a difference:
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- The type of sealant required
The cost depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Helping us quote
When you call or email, it’s useful to know:
- What’s wrong with the joints now
- Whether it’s a home or a business
- Where the property is
- Any previous sealing or DIY work
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll explain what’s involved.
FAQs for Little Portugal
Can parking be tricky for a visit in Little Portugal?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you work for landlords with property near Wandsworth Road station?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Which products do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
How much does new build mastic cost in Little Portugal?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
What colour sealant will you use?
White and clear are the most common, but other colours are available. We match the colour to the finish and agree it with you.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
How long does the job take?
As a guide, most jobs take a few hours in a single home. Larger jobs naturally take longer, and we will say how long yours will take.
What information do you need?
A short description and the location, plus pictures if you have them. We will ask anything else we need to know.
What the job involves on each surface
Kitchens
Sink joints are wet all the time. We use a sealant suited to kitchens, food-safe where it’s needed.
Plot handovers
Good preparation at handover saves snagging later. Dust from the build is removed first.
Why deal with it now?
If you’re still in the builder’s snagging or warranty period, ask them to put it right first. If it keeps failing or isn’t dealt with, we can reseal it properly. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why Little Portugal customers choose us
- Arbo and Everbuild products
- A choice of colours where the product allows
- Homes, businesses and hotels
- Sealant colour chosen to suit
See what affects the cost or our reviews.