Greater London · England
South Norwood New Build Mastic
New build mastic in South Norwood from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Sealant that never bonded to the surface
- Cracked caulk along new skirting
- Sealant work across a run of new homes
When to call us in South Norwood
A new house holds a lot of water from the build, which takes a year or two to dry out. As it does, timber shrinks and joints open, and sealant that can’t keep up splits.
It’s worth asking for a quote if you see:
- Gaps between new skirting and floors
- Shower seals failing in the first year or two
- Gaps behind new kitchen upstands
- Beads laid onto grit and dust from the build
If you’ve bought a new home near Norwood Junction station, the sealant around baths, showers and frames is worth checking in the first year or two.
Questions to ask before booking
- Is VAT in the price?
- Which colour the sealant will be
- Who does the work, and how experienced they are
- How long to leave it before use
New build mastic in South Norwood, done properly
In a new home, every joint should have a clean, even bead. When the finish is smeared, patchy or already cracking, it’s worth putting right early, before water gets into the floor or walls. If you have sealant work across a run of new homes and leaking shower tray seals in a new home, we can put it right.
New flats are going up across London, many of them in larger developments. Snagging there often goes through the developer or managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
There’s a 12-month guarantee on every job, whatever its size.
- Location
- South Norwood (SE25, SE20, CR0)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near South Norwood
Also in South Norwood
Your questions about new build mastic in South Norwood
Do you cover South Norwood for new build mastic?
Yes. We work across London and the South East, and South Norwood is part of that. You can call 0345 464 0079 or email us and tell us what needs doing.
Do you work for landlords with property near Norwood Junction station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Will there be a smell?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Is the work guaranteed?
Yes. Every job comes with our one-year guarantee.
How long will you be here?
That depends on how much there is to do, but most jobs take a few hours in a single home. We’ll give you a better idea when we quote.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Where are you based?
Our base is Crawley. Our area covers South East England, London and Scotland.
What does new build mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, ring 0345 464 0079 or drop us an email and tell us what needs doing and where.
Quotes for new build mastic in South Norwood
Every job gets its own quote. This is what makes a difference:
- The product the joint needs
- How many rooms, windows or areas are involved
- Access and height
- Whether there’s mould to deal with
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
- The rough size of the job
- Any access issues, like height or stairs
If you’re in South Norwood and need new build mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before any work starts.
What the job involves on each surface
Show homes
Tired or marked sealant in a show home can be renewed. We cut it out and reseal neatly.
Skirting and floors
As timber and screed dry, skirting and floors shift. We use a flexible product rather than caulk in a colour to suit.
When something else is needed
A few problems are outside what sealant work can do:
- Damaged fittings that need replacing
- Settlement cracks that need a surveyor
- Baths and trays that move too much for sealant to cope with
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
What we seal
- Skirting & floors
- Windows & doors
- Kitchens
- Bathrooms & en suites
- Plot handovers
- Show homes
Landlord and commercial work in South Norwood
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.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured for the work.
New homes and floors in South Norwood
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. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
As a London address, South Norwood can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
South Norwood is about 5 miles south-east of Stockwell, in Greater London. South Norwood gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 764 places across Greater London, large and small. Our London page covers work nearby, about 7 miles away.
All of SE25, SE20 and CR0 is covered for new build mastic. Whether your property is on Park Road, Court Road and Dixon Road or a nearby road, we can help. Main roads around South Norwood include the A213, so getting to you is simple. Other places close to South Norwood include Selhurst (1 mile north), Woodside (1 mile south), Ashburton (1 mile south), Elmers End (1 mile east) and Addiscombe (1 mile south). Further out, we also cover London (7 miles north), City of Westminster (9 miles north-west), Marylebone (9 miles north), Kensington (9 miles north-west), St Pancras (9 miles north) and Shoreditch (9 miles north).
Landmarks near South Norwood
Typical jobs here are in homes near The Albion pub, South Norwood Recreation Ground and Harris Academy South Norwood, among other places. There’s a railway station in South Norwood itself: Norwood Junction station. Nearby you’ll also find Croydon University Hospital (1.7 miles south-west) and Crystal Palace Museum (1.4 miles north). Open spaces near South Norwood include Dulwich Upper Wood and Duppas Hill.
How it works
When we arrive, we look over the joints with you first, so you know exactly what we’re doing. Surfaces next to the work are protected before any work begins. Most jobs take a few hours in a single home. In South Norwood, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- 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.
- 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.
How to prepare
- Mention if the joints have been sealed before
- On commercial sites, let us know about site rules
- Try not to wet indoor joints just before the visit
Get a quote
For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Advice
Leave it or put it right?
A tube of sealant from the DIY shop won’t fix the cause: grit, unprimed surfaces and old layers underneath. Cutting out, cleaning and priming are what make the difference. In a flat in South Norwood, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and agree the price before starting.
Why us?
- We leave the area clean and tidy
- Anti-fungal sanitary silicone in wet areas
- You choose the colour before work begins
- A sealant colour to suit the surroundings