Greater London · England
Beddington Window Mastic
Specialist window mastic for Beddington: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Black, perished sealant on frames
- Rushed sealant from a window installation
- A bead that doesn’t match the frame
Window mastic in Beddington
Around Beddington we seal all kinds of frames: from uPVC casements to timber and aluminium, plus patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on patio & French doors, timber windows & doors and uPVC windows, and people most often call us about sealant in the wrong colour for the frame and old mastic that has gone black or come away.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking, and access in Beddington is something to talk through when you book.
All our work comes with a one-year guarantee, wherever you are in Greater London.
- Place
- Beddington (CR0, SM6, CR9)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What sealant work can’t fix
We won’t take on work that won’t last, so these are the limits:
- Broken hinges, locks or handles
- Soft or decayed wood in the frame
- A failed sealed unit that has misted up
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Composite doors
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Window sills
- Patio & French doors
For landlords and businesses
Landlords and letting agents in Beddington can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
What window mastic looks like in Beddington
With historic houses such as Addington Palace (about 4 miles east) nearby, there’s older building stock in the area around Beddington as well as newer homes. 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. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Waddon station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. If you live in an older home near Parish Church of St Mary the Virgin, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you look after a building such as Beddington Park Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Beddington is about 2 miles west of Croydon, in Greater London. Every kind of property in Beddington is covered for window mastic. Every job comes with our one-year guarantee. Our area takes in 764 places across Greater London, large and small. You can also see our page for London, roughly 9 miles from Beddington.
All of CR0, SM6 and CR9 is within our area for window mastic, from the main roads to the quietest streets. Streets in the area include Guy Road, Mill Lane and Church Lane. We also cover the places around Beddington: Bandonhill (1 mile south), Wallington (1 mile south-west), Waddon (1 mile south-east), Old Town (1 mile east) and Roundshaw (1 mile south). Larger places within reach include London (9 miles north), City of Westminster (10 miles north), Marylebone (10 miles north), Kensington (9 miles north), St Pancras (11 miles north) and Shoreditch (11 miles north).
Around Beddington
We work in homes and buildings around The Archbishop Lanfranc School, Waddon Ponds and The Plough pub. The nearest railway station is Waddon station, about 0.7 miles east. Well-known places in the area include Croydon University Hospital (1.6 miles north-east) and Croydon Airport Visitor Centre (1.2 miles south-east). Not far away are Wilderness Island and Duppas Hill.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Why act early in Beddington
Running fresh sealant over the old joint is tempting, but new sealant cannot bond to old, crumbling mastic. It soon lifts and the leak carries on behind it. Proper resealing starts with removing the old joint. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we will explain what it covers.
What you get with us
- 180+ five-star Google reviews
- More than 20 years in sealant work
- We leave the area clean and tidy
- Anti-fungal silicone where joints get wet
Your questions about window mastic in Beddington
Do you cover Beddington for window mastic?
Yes. We work across London and the South East, and Beddington is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Do you work for landlords with property near Waddon station?
Yes, we work for landlords and agents. Just ring 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Where are you based?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Can you seal over the old sealant?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
How much does window mastic cost in Beddington?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You will get a clear quote before we start.
Will new mastic stop draughts?
Yes, if the air is getting in around the frame. If it’s coming through the window seals, we will tell you.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Do you work on first-floor windows?
Yes, as long as they can be reached safely. Tell us about access when you get in touch so we can plan the job.
How it works
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes a few hours for a handful of frames, longer for a whole house. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Beddington. It helps if you can point us to a visitor permit or a bay close to the door.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
How to prepare
- Keep children and pets away from the work area
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Related advice
Towns and villages near Beddington
What else we do in Beddington
How the job changes by surface
Window sills
Masonry sills can have joints where water gets in, and the joint under the frame can let rain run behind. Those are sealed with a product suited to stone or concrete.
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that without cracking.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Use gentle cleaners on frames and sealant
- Check the mastic once a year
- Keep paint and stain on wooden frames in good order
- Clear any debris from frame drain holes
Keep sill grooves and drainage slots clear, so rain drains out rather than building up at the sealant.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. If you notice one, it’s time to get the joint looked at.