Greater London · England
Window Mastic in South Norwood
Mastic around window and door frames, sills and patio doors for South Norwood, backed by a one-year guarantee. Ask us for a quote.
- Mastic that has split away from the wall
- Cold air getting in at the frame edge
- Mastic that’s falling out in pieces
How the visit works
The work is kept neat and contained to the area we are working on. The job generally takes a few hours for a handful of frames, longer for a whole house, and we tell you how long to leave it before we go. For a job in South Norwood, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
Related advice
Window mastic in South Norwood
The new joint does not have to be white. We can seal in white, brown, anthracite grey, black or clear, so the bead blends with the window rather than framing it. We are often asked to deal with white mastic on grey or black frames and gaps where the sill meets the wall, across timber windows & doors, patio & French doors and aluminium frames.
London has a lot of flats and conversions, where windows are often on upper floors. Who looks after the outside of the frames can depend on the lease, so check that first.
Big or small, it’s backed by our 12-month guarantee in South Norwood and across Greater London.
- Where
- South Norwood (SE25, SE20, CR0)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What the job involves on each surface
Aluminium frames
Aluminium needs a sealant that bonds to coated metal. We use a neutral-cure product.
Composite doors
Front doors take the weather head on, and the top and bottom corners tend to fail first. Those corners get the most care.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Hotels need rooms back in use, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
Frames and glazing around South Norwood
Historic houses like Kingswood House (about 2.2 miles north) are a reminder that the area around South Norwood has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
As a London address, South Norwood can be tricky for parking: let us know about parking bays, permits or a driveway. For site and facilities teams at buildings such as St Mark's Church of England Primary Academy, larger buildings have plenty of frames, and the mastic around each one ages.
South Norwood is about 5 miles south-east of Stockwell, in Greater London. If you need window mastic in South Norwood, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We are based in Crawley and cover Greater London. South Norwood is one of 764 towns and villages in Greater London where we work. You can also see our page for London, about 7 miles away.
Work in SE25, SE20 and CR0 works the same way as everywhere else we cover. We cover properties on Park Road, Court Road and Dixon Road. South Norwood sits on or near the A213, which makes travel easy. Neighbouring places we cover for window mastic include Selhurst (1 mile north), Woodside (1 mile south), Ashburton (1 mile south), Elmers End (1 mile east) and Addiscombe (1 mile south). We also work in nearby towns such as 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).
What’s near South Norwood
Around South Norwood, our work takes us to homes and buildings near The Albion pub, South Norwood Recreation Ground and Harris Academy South Norwood, among other places. South Norwood has its own railway station: Norwood Junction station. Nearby you will also find Croydon University Hospital (1.7 miles south-west) and Crystal Palace Museum (1.4 miles north). For a walk, there’s Dulwich Upper Wood and Duppas Hill.
What sealant work can’t fix
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Penetrating damp from a failed cavity tray or render
- Broken hinges, locks or handles
- A frame that has rotted at the joint
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly before you book.
Where we work in South Norwood
- Composite doors
- uPVC windows
- Patio & French doors
- Window sills
- Timber windows & doors
- Aluminium frames
Towns and villages near South Norwood
More services for South Norwood
When to call us in South Norwood
Mastic ages in the weather. UV light hardens the outside of the bead, until it loses its stretch and starts to crack.
Most people get in touch after spotting something like this:
- Black, perished sealant on frames
- Leaking joints at the ends of sills
- White mastic on grey or black frames
- Cold air getting in at the frame edge
Rented homes near Norwood Junction station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What to look for in a quote
- What product goes in the joint
- Whether they’re fully insured
- Is the old sealant removed completely?
- How the joint is cleaned and prepared
How we quote for window mastic
Jobs vary more than people expect. What affects the quote:
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- The size of the job
- Working hours on commercial sites
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part, and we’ll explain the quote if you ask.
Asking for a quote
When you call or email, it’s useful to know:
- Any access issues, like height or stairs
- The address or postcode of the job
- If someone has resealed it before
- How many joints, rooms or windows are involved
Need a quote? Please phone 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and send you a clear quote before work begins.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
South Norwood questions
Is parking a problem for a job in South Norwood?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Can you do window mastic in South Norwood?
Yes, South Norwood is within the area we cover. We work across 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 will give you a clear quote.
Can you do upstairs windows?
Yes, where they can be reached safely. Let us know about access when you ask for a quote and we will plan for it.
Can tenants book the work?
We’re happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
How long should I leave it?
Different products cure at different speeds, so please follow the time we give you when we finish.
Will it make a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.