Greater London · England
Glazing & conservatory sealant in Bromley, Greater London
Specialist glazing silicone for Bromley: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Stained, discoloured glazing silicone
- Water running down inside the glass
- Rooflight joints letting water in
Glazing silicone in Bromley
Not every silicone suits glass. Our applicators use neutral-cure glazing silicone that’s suited to glass and the frame, finished with a neat, even bead. We work on glass-to-frame joints, rooflights and shower screens, and people most often call us about drips on the inside of a conservatory window and cracked silicone between glass panels.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, letting in draughts and water.
All of our work is guaranteed for twelve months, in Bromley and everywhere else we cover.
- Place
- Bromley (E3, E14, E15)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Windows and doors in Bromley
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. Historic houses like Sutton House (about 2.2 miles north-west) are a reminder that the area around Bromley has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like St Agnes RC Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. Homes close to Bow Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near West Ham station change hands often, and leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.
Bromley is about 2 miles east of Whitechapel, in Greater London. If you need glazing silicone in Bromley, it’s easy to get a quote: please call 0345 464 0079 or drop us an email. We cover Greater London from our Crawley base. Our area takes in 764 places across Greater London, large and small.
Jobs for glazing silicone in E3, E14 and E15 is quoted and booked the same way as anywhere else. We cover properties on Bow Road, Bruce Road and Edgar Road and the roads around them. We also cover the places around Bromley: Three Mills (1 mile north-east), Mill Meads (1 mile north-east), Bow Common (1 mile south-west), Mile End (1 mile west) and Bow (1 mile north-west). Within a short drive, we also cover London (4 miles south-west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (4 miles west) and Shoreditch (3 miles west).
Local landmarks in Bromley
Around Bromley, our work takes us to homes and buildings near Bob's Park, East London Arts & Music and Bow School. The closest station to Bromley is West Ham station, about 1 mile east. Nearby you will also find Tower of London (2.8 miles south-west) and Stratford Centre (1.4 miles north-east). Open spaces near Bromley include Old Ford Island and Tower Hill.
The process
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes anything from an hour or two to most of a day, depending on the size of the job, and the area is left clean. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We find where water is getting in and check whether it’s a sealant joint.
- The old sealant is removed from the glass and frame without scratching them.
- Surfaces are cleaned with a solvent suited to glass and the frame.
- New glazing silicone goes in and is tooled to a neat finish.
- We look over every joint and, where we can, test it with water.
How to prepare
- Clear the area around the work
- Keep pets and children clear of the area while we work
- Mention any leaks or damp you’ve noticed
How to 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 deal with it now?
Fixing a leaking screen early protects what’s underneath. A small leak can reach the floor below before you notice. 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 Bromley.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
Why Bromley clients choose us
- Full insurance on every job
- Experience in homes, commercial sites and hotels
- Colour picked to suit the job
- Arbo and Everbuild products
Your questions about glazing silicone in Bromley
Do you cover Bromley for glazing silicone?
Yes. Our work covers London and the South East, and Bromley is part of that. You can phone 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear quote.
Can parking be tricky for a visit in Bromley?
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.
Can a conservatory leak be sealed?
It depends on the cause. Failed glazing and frame joints can be resealed but roof and panel problems need another trade.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Do you reseal glass shower screens?
We can. We remove the old silicone carefully, and the joints are cleaned and resealed.
Do you seal glass balustrade bases?
Yes. The sealant joint at the base can be renewed. We do not install or replace the glass.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
What affects the quote in Bromley
Every job gets its own quote. These are the things that affect it:
- Any mould that needs treating
- The number and length of the joints
- How many areas need sealing
- Any working-time requirements on site
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Asking for a quote
When you contact us, these details help:
- The rough size of the job
- The address or postcode of the job
- How we’d reach the joints
- Any previous sealing or DIY work
We quote each job on its own, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
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Aftercare tips
A little care helps the new joints last. We recommend:
- Open vents or windows to let moisture out
- Inspect the sealant on glazing annually
- Get a new leak looked at quickly
- Check the gutters above the glazing for debris
Look over the glazing joints every year or so. Catching a split early keeps the repair small.
Do not leave lifting or mouldy silicone on glazing. Peeling silicone lets water in behind and the leak gets worse.
What the job involves on each surface
Shower screens
Frameless screens rely on silicone at the base and wall. We renew it without marking the glass.
Rooflights
Rooflight leaks can come from the sealant or the roof. We check which it is.
What sealant work cannot fix
We won’t take on work that will not last, so these are the limits:
- Cracked or broken glass
- A sealed unit that has misted inside
- 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.
What we seal
- Glass balustrade bases
- Glass-to-frame joints
- Rooflights
- Conservatory frames
- Glass-to-glass joints
- Shower screens