Greater London · England
Glazing & conservatory sealant in Addington, Greater London
We cover Addington for glazing silicone for conservatories, rooflights, glass panels and shower screens. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Leaking glazing joints on a rooflight
- Mouldy sealant around glass panels
- Water escaping where a screen meets the wall
Quotes for glazing silicone in Addington
Jobs vary more than people expect. The main factors:
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- Which sealant suits the joint
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear price before work begins.
What to tell us for a quote
When you contact us, it’s useful to know:
- If someone has resealed it before
- Where the property is
- How we’d reach the joints
- Whether it’s a home or a business
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.
Glazing silicone in Addington
Frameless shower screens rely on sealant to keep water in. Leaks normally come from the wall joint or the tray joint and both get fresh anti-fungal silicone. We work on shower screens, glass balustrade bases and rooflights, and people most often call us about sealant that was laid over old silicone and failed and failed joints on frameless glass.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease usually says who is responsible for the windows, so it’s worth checking before booking.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Place
- Addington (CR0, CR2, BR4)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What the job involves on each surface
Conservatory frames
Frame joints face sun and rain all year. Renewed sealant keeps water out.
Glass-to-frame joints
Glass-to-frame joints need a sealant that bonds to both. We use a glazing silicone suited to each.
Addington: your questions answered
Is parking a problem for a job in Addington?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Is Addington in your area for glazing silicone?
Yes. We work across London and the South East, and Addington is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will give you a clear quote.
Will the old sealant be removed?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
How long does the job take?
Typically it takes a few hours, depending on how many joints need doing. Bigger jobs take longer, and we will tell you how long to expect.
Do the sealants smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
Can a conservatory leak be sealed?
It depends on the cause. Sealant joints we can renew but roof and panel problems need another trade.
Glazing silicone in Addington: local notes
In a converted house or block, who looks after the windows depends on the lease, so check that before booking. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
As a London address, Addington can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. In the older streets around Church of St Mary, the joint between an old wall and a newer frame is usually the first place rain gets in.
Addington is about 3 miles south-east of Ashburton, in Greater London. Jobs in Addington get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Addington is one of 764 towns and villages in Greater London we cover. There’s also a page for London, about 10 miles away.
We work across the CR0, CR2 and BR4 postcode area for glazing silicone and the streets around it. Local streets include Lodge Lane, Falconwood Road and Addington Village Road, and we cover them all. Other places close to Addington include Coney Hall (1 mile north), Forestdale (1 mile south), Spring Park (1 mile north), New Addington (1 mile south-east) and Selsdon (1 mile south-west). Larger places within reach include London (10 miles north), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (12 miles north-west), St Pancras (12 miles north) and Shoreditch (12 miles north).
What’s near Addington
Typical jobs here are in homes near Addington Park and John Ruskin College. The nearest railway station is West Wickham station, about 1.7 miles north-east of the centre. A little further out are National Psychosis Unit (1.6 miles north) and St George's Walk (3.1 miles west). Green spaces nearby include Bramley Bank and Duppas Hill.
What happens on the day
The work is kept neat and contained to the area we are working on, so you can get on with your day. The job usually takes anything from an hour or two to most of a day, depending on the size of the job, and we tell you how long to leave it before we go. For a job in Addington, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we are working on and whether there’s a lift.
- First we agree the joints to be done.
- Old sealant is removed from the glass and frame.
- The surfaces are cleaned with a suitable solvent.
- We apply and tool the new silicone.
- The joints are checked before we leave.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
Get a quote
Need a quote? Please ring 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
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Why it’s worth doing now in Addington
Dealing with a leaking shower screen early protects the floor and ceiling. A small leak can reach the floor below before it shows. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Leaving a failed joint usually makes the job bigger, not smaller. If you are unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Addington
- Fully insured
- Quality sealants from Arbo and Everbuild
- Tidy, careful work
- Over 20 years’ experience
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Frames that have decayed or split
- Condensation trapped between two panes
- A broken pane or roof panel
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before booking.
Where we work in Addington
- Glass-to-frame joints
- Conservatory frames
- Glass-to-glass joints
- Shower screens
- Glass balustrade bases
- Rooflights
Signs you need glazing silicone in Addington
Some conservatory leaks aren’t sealant at all: broken panels, roof problems and blocked gutters can all let water in. That’s why we trace the leak first.
These are the problems we are asked about most:
- Shower screens leaking along the wall or tray
- Glazing silicone that has cracked or come away
- Mouldy sealant around glass panels
- Water running down inside the glass
For site and facilities teams at buildings such as Applegarth Academy, larger buildings have plenty of frames, and the mastic around each one ages.
Comparing quotes
- The length of the guarantee
- What product goes in the joint
- Whether VAT is included
- Who turns up on the day