Greater London · England
Glazing & conservatory sealant in Broad Green, Greater London
Glazing silicone for Broad Green and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Leaking glazing joints on a rooflight
- Split or lifting silicone on glass
- Water tracking down the inner face of the glass
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Glazing silicone for homes and businesses in Broad Green
Our work covers conservatory joints, rooflights and glass panels plus shower screens and the bases of glass balustrades. The old sealant comes out, the joint is cleaned and new silicone goes in. We work on shower screens, conservatory frames and glass balustrade bases, and the jobs we see most are new silicone smeared over old sealant and failed sealant around rooflight glass.
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.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Broad Green (CR0, CR7, CR90)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
Housing providers, facilities teams and property managers book us too in Broad Green and across Greater London. We can quote a run of properties together, and we’re fully insured.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
What affects the cost of glazing silicone
Call for a quick quote. The main things that affect it are:
- The size of the job
- When we can work, for business premises
- How easy the joints are to reach
- Whether there’s mould to deal with
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.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Where the job is, and your postcode
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- How many joints, rooms or windows are involved
For glazing silicone in Broad Green, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Run a squeegee over the glass when you are done
- Keep air moving in the conservatory
- Keep conservatory gutters clear of leaves
- Don’t use a blade near the sealant
On shower screens, wipe or squeegee after use and keep the room ventilated. It helps stop mould getting into the silicone.
Conservatory leaks rarely stay small. Water travels along the frame and into the wall, so get it looked at when you first see it.
How it works
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before any work begins. Most jobs take anything from an hour or two to most of a day, depending on the size of the job. For a job in Broad Green, 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 check where the water gets in.
- The failed silicone is cut out without marking the glass or frame.
- We clean the glass and frame so the new silicone bonds.
- A neutral-cure glazing silicone is applied and tooled.
- Each joint is checked and, where possible, water-tested.
How to prepare
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
Ask for a quote
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Advice
Questions from Broad Green
Can you do glazing silicone in Broad Green?
Yes, Broad Green is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll send you a clear quote.
Is parking an issue for glazing silicone in Broad Green?
Parking in Broad Green, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses, and we are fully insured.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Broad Green and the rest of Greater London.
Can you do several jobs on one visit?
Yes. Just list everything you need and you will get one quote.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
Broad Green homes and the weather
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Kingswood House (about 3.2 miles north) are a reminder that the area around Broad Green 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.
If you let a flat or house near West Croydon station, glazing joints are worth checking at the end of a tenancy, before a small leak grows. Schools such as Elmwood Infant School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. As a London address, Broad Green can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Broad Green is about 6 miles south of Stockwell, in Greater London. We carry out glazing silicone for homes and businesses in Broad Green and nearby, as part of our work across Greater London. Our Greater London coverage runs to 764 places, and Broad Green is one of them. London is on our list too, about 8 miles from Broad Green.
Work in CR0, CR7 and CR90 works the same way as everywhere else we cover. We cover properties on York Road, Nova Road and Lion Road. Nearby, we also carry out glazing silicone in Old Town (1 mile south), Beddington (2 miles south-west), Waddon (2 miles south), Bandonhill (2 miles south-west) and Wallington (2 miles south-west). Larger places within reach include London (8 miles north), City of Westminster (9 miles north), Marylebone (9 miles north), Kensington (9 miles north-west), St Pancras (10 miles north) and Shoreditch (10 miles north).
Local landmarks in Broad Green
Locally, jobs take us to homes and businesses close to Harris Invictus Academy Croydon, The Half Moon pub and Waddon Ponds. For rail, the closest station is West Croydon station, roughly 0.6 miles south. Well-known places in the area include Centrale Croydon (0.8 miles south) and Croydon University Hospital (less than half a mile north-west). The countryside around Broad Green includes Duppas Hill and Biggin Wood.
When it isn’t the sealant
We will always be straight with you, so here’s what sealant cannot fix:
- Structural problems with a conservatory roof
- Glass that needs replacing
- Failed flashing around a conservatory
If in doubt, ring 0345 464 0079 or email us and we will say what we think before booking.
What we seal
- Rooflights
- Glass balustrade bases
- Glass-to-frame joints
- Shower screens
- Conservatory frames
- Glass-to-glass joints
Surface by surface
Glass-to-glass joints
Where two panes meet, the silicone joint takes all the movement. It must be clean, neat and well bonded.
Conservatory frames
The joints where the conservatory meets the house take a lot of movement. We reseal them with a sealant suited to the frame.