Greater London · England
Putney New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for householders, landlords and businesses in Putney. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Frame joints opening as the plaster dries
- Plot mastic for developers ahead of handover
- Joints pulling apart as timber shrinks
What the job involves on each surface
Plot handovers
Plot mastic is carried out to the developer’s schedule. Joints are prepared properly before sealing to keep callbacks down.
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.
New build mastic in Putney, done properly
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. Typical jobs include joints pulling apart as timber shrinks and untidy sealant flagged on a snagging list, on plot handovers, bathrooms & en suites and skirting & floors.
Shops, offices and commercial units across London have hard-wearing floors with movement joints that need resealing as they wear, while new homes need a neat, sound finish around frames, baths and kitchens before handover.
All of our work is guaranteed for twelve months.
- Location
- Putney (SW15, SW19, SW13)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why it’s worth doing now in Putney
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 to plan around. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Putney, the repair is bigger than a sealant job.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
Why book with us
- White, clear, grey or another colour, product permitting
- Any old sealant cut out fully, not covered over
- You choose the colour before work begins
- A sealant colour to suit the surroundings
See what affects the cost and customer reviews.
Aftercare tips
To keep the joints looking good and working properly:
- Wipe joints with warm soapy water
- Act quickly if a seal starts to leak
- Put sealant faults on your snagging list early
- Wait for the cure time before using a resealed shower
Keep the bathroom ventilated, especially in the first year. Run the fan or open a window after bathing to help keep mould away.
Report failed sealant to the builder while you’re in the snagging period. Once it ends, the repair may be down to you so report it promptly.
When it isn’t the sealant
To be straight with you, there are a few things sealant won’t fix:
- Cracking that points to a structural problem
- Cracked trays, tiles or worktops
- A tray or bath that is not properly supported, until it’s fixed
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Windows & doors
- Plot handovers
- Show homes
- Bathrooms & en suites
- Kitchens
- Skirting & floors
What new build mastic looks like in Putney
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. 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, Putney can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. If you’ve bought a new home near Putney station, the sealant around baths, showers and frames is worth checking in the first year or two.
Putney is about 1 mile south-west of Fulham, in Greater London. Jobs in Putney get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 764 places across Greater London, large and small. We also work in London, around 6 miles away.
Our applicators cover all of the SW15, SW19 and SW13 postcode area for new build mastic. You will find streets such as Putney High Street, Upper Richmond Road and Spencer Walk, and we cover them all. Being close to the A3 and B306, Putney is simple for us to get to. Neighbouring places we cover for new build mastic include Roehampton (1 mile south-west), Barnes (1 mile north-west), Fulham (1 mile north-east), Mortlake (2 miles west) and Wimbledon Park (2 miles south). Further out, we also cover London (6 miles north-east), City of Westminster (5 miles north-east), Marylebone (5 miles north-east), Kensington (3 miles north), St Pancras (6 miles north-east) and Shoreditch (8 miles north-east).
What’s near Putney
Typical jobs here are in homes near Putney School of Art and Design, Bishops Park and The Railway pub and the streets around them. Putney has its own railway station: Putney station. Nearby you’ll also find Putney Exchange (less than half a mile east) and Antique Breadboard Museum (under half a mile north-east). Green spaces nearby include Henman Hill and Battersea Park Lake.
What happens on the day
We keep the work tidy and contained to the joints we’re treating. The job normally takes a few hours in a single home, and we explain the cure time before we leave. In a London area like Putney, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We start by going through the snagging items or plot schedule with you.
- The failed sealant is removed completely.
- 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.
Before we arrive
- On commercial sites, let us know about site rules
- Where the joints are inside, avoid wetting them before we arrive
- Move anything stored near the joints
Getting a quote
Every job is quoted individually, so start by telling us what you need. Simply ring 0345 464 0079 or drop us an email and describe the job, and pictures are welcome.
Related advice
Landlords, agents and businesses in Putney
We also work for property managers and facilities teams. Several sites can go on one quote.
For anyone letting property in or around Putney, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
Quotes for new build mastic in Putney
For a quick quote, just ask. What matters most is:
- The old material and how stubborn it is
- Working hours on commercial sites
- How much there is to do
- How many areas need sealing
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or email us and we will give you an honest view and a quote.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
- Access, such as stairs, a lift or height
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Putney: your questions answered
Do you cover Putney for new build mastic?
Yes. We work across London and the South East, and Putney is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
Can parking be tricky for a visit in Putney?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Do you work for developers?
Yes. We carry out plot mastic and second-fix sealing for builders and developers. Send the schedule and any specification and we will give you a quote.
Are you fully insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Is it normal for sealant to crack in a new home?
A new house dries and settles for a year or two, and sealant is often rushed onto dusty, unprimed surfaces. Either can make it fail early.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.