Greater London · England
Glazing & conservatory sealant in Brockley, Greater London
Glazing silicone for Brockley and the surrounding area: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Silicone pulling away from the glass
- Leaks where conservatory glass meets the frame
- Mouldy sealant around glass panels
What we do, step by step
Before we leave, we go over the finished joints with you. The visit itself usually takes a few hours, depending on how many joints need doing, depending on the size of the job. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- We look at the glazing and agree which joints need resealing.
- We cut away the failed silicone.
- The surfaces are cleaned with a suitable solvent.
- New glazing silicone goes in and is finished neatly.
- The joints are checked before we leave.
How to prepare
- Clear items away from the joints we are working on
- Mention any sign-in or site rules at work premises
- Let us know about parking restrictions
Get a quote
Asking for a quote is easy: let us know what needs doing and where. Photos by email help us understand the job, and we will come back to you with a quote.
Read more
About our glazing silicone in Brockley
Frameless shower screens rely on sealant to keep water in. Leaks generally come from the wall joint or the tray joint and both get fresh anti-fungal silicone. We are often asked to deal with glass-to-glass joints that have split and water getting into a conservatory at the joints, on shower screens, glass-to-frame joints and glass balustrade bases.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Brockley.
Your job is guaranteed for a year, as with all our work.
- Location
- Brockley (SE4, SE23, SE6)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Brockley questions
Can you do glazing silicone in Brockley?
Yes, Brockley is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Can parking be tricky for a visit in Brockley?
Parking in Brockley, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do you fit new glass or sealed units?
No. Misting between panes means the sealed unit has failed and needs replacing by a glazier.
Where do you work from?
We are based in Crawley, and we work across South East England, London and Scotland.
What should I tell you?
A short description and the location, with photos by email if possible. We’ll ask anything else we need to know.
Can you reseal a frameless shower screen?
Yes. We remove the old sealant and reseal the wall and tray joints.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Will it make a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Nearby places to Brockley
More services for Brockley
Honest limits
Sealant isn’t the answer to every problem, and we’ll tell you before work begins. It will not solve:
- A broken pane or roof panel
- Frames that have decayed or split
- Leaks from the roof covering or flashing (a roofer’s job)
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Glass-to-glass joints
- Glass balustrade bases
- Rooflights
- Conservatory frames
- Shower screens
- Glass-to-frame joints
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
How we quote for glazing silicone
Call for a quick quote. The main things that affect it are:
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
- Mould in or behind the old joints
- The product the joint needs
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 make a difference, and we will explain the quote if you ask.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- How we’d reach the joints
- What’s wrong with the joints now
- Where the job is, and your postcode
Want a quote for glazing silicone? Please ring 0345 464 0079 or email us and tell us about the job. We will explain what we’d do and send you a clear quote before any work starts.
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Avoid strong solvents on or near the sealant
- Don’t leave a drip for the next storm
- Keep conservatory gutters clear of leaves
- Use a gentle glass cleaner and a soft cloth
Look over the glazing joints every year or so. Catching a split early keeps the repair small, before water gets in.
Act on black or lifting silicone early. Once it starts to peel, water gets behind it and the problem grows.
Landlords, agents and businesses in Brockley
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Glazing silicone in Brockley: local notes
In a converted house or block, who looks after the windows depends on the lease, so check that before you book. With historic houses such as Queen's House (about 2.4 miles north-east) nearby, there’s older building stock in the area around Brockley 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 is traditional sand mastic.
Schools such as Beecroft Garden Primary are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Rented homes near Crofton Park station change hands often, and glazing joints are worth checking at the end of a tenancy, before a small leak grows. Brockley is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Brockley is about 1 mile south of New Cross, in Greater London. Whether you are in the middle of Brockley or further out, glazing silicone is available for homes and businesses alike, from flats and houses to offices and hotels. Brockley is one of 764 towns and villages in Greater London where we work.
Work in SE4, SE23 and SE6 is quoted and booked the same way as anywhere else. If you need glazing silicone at a property on Ivy Road, Nash Road and Lindal Road or anywhere close by, we can help. Neighbouring places we cover for glazing silicone include Crofton Park (1 mile south-east), Honor Oak (1 mile west), Ladywell (1 mile east), Forest Hill (1 mile south-west) and Nunhead (1 mile north-west). Within a short drive, we also cover London (4 miles north-west), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (8 miles north-west), St Pancras (6 miles north-west) and Shoreditch (5 miles north).
Landmarks near Brockley
Typical jobs here are in homes near Blythe Hill Tavern, Allenby Tutorial Trust and Blythe Hill Fields. There’s a railway station in Brockley itself: Crofton Park station. A little further out are Horniman Museum and Gardens (1.4 miles south-west) and University Hospital Lewisham (0.7 miles east). The countryside around Brockley includes One Tree Hill and Knight's Hill.
Why act early in Brockley
If the problem is a misted unit or a broken panel, sealant will not help. We say so plainly, so you can call the right trade. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler for homes in Brockley.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
Why choose Mr Mastic in Brockley
- Rated 4.9 stars on Google
- Sanitary silicone with an anti-fungal additive in wet areas
- Arbo and Everbuild products
- Domestic, commercial and hotel work
Read our cost guide and what customers say.