Greater London · England
Glazing Silicone in Cannon Hill
Professional glazing silicone in and around Cannon Hill, with old sealant always removed completely and a 12-month guarantee.
- Failed sealant around rooflight glass
- Silicone pulling away from the glass
- Black or yellowed silicone on glass joints
Glazing silicone for homes and businesses in Cannon Hill
Our work covers conservatory joints, rooflights and glass panels, as well as frameless shower screens and glass balustrade bases. The old sealant comes out, the joint is cleaned and new silicone goes in. If you have sealant that was laid over old silicone and failed and water running down inside the glass, we can help, whatever the surface.
London has a lot of flats and conversions, where windows are often on upper floors. Who looks after the outside of the frames can depend on the lease, so check that first.
Every job is covered by our one-year guarantee.
- Place
- Cannon Hill (SW20, SM4, KT3)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Your questions about glazing silicone in Cannon Hill
Can parking be tricky for a visit in Cannon Hill?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Do you work for landlords with property near South Merton station?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. You can call 0345 464 0079 or email us with the details for a clear quote.
What information do you need?
Tell us what needs doing and where, with photos by email if possible. If we need more, we’ll ask.
Where do you work from?
We work from Crawley. We cover Cannon Hill and the rest of Greater London, along with the rest of our area.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint.
Why not top up the existing silicone?
A top-up rarely holds. The new bead can’t grip the old one, so we remove the old sealant and clean the joint.
Is balustrade sealant something you do?
Yes. The sealant joint at the base can be renewed. Fitting glass is a separate trade.
How long does glazing silicone take?
Typically it takes a few hours for most jobs. Bigger jobs take longer, and we will say how long yours will take.
How we quote for glazing silicone
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- Access and height
- When we can work, for business premises
- How many areas need sealing
The cost depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
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 we’d reach the joints
- If it’s domestic, commercial or a hotel
- The rough size of the job
- What’s wrong with the joints now
For glazing silicone in Cannon Hill, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we will agree the price before any work begins.
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
We work for landlords and letting agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Also near Cannon Hill
What else we do in Cannon Hill
What the job involves on each surface
Glass-to-glass joints
You see these joints clearly, so we take care to leave a neat bead.
Glass balustrade bases
Outdoor balustrade joints face the weather. Renewing the sealant keeps water out of the channel.
Common problems we fix in Cannon Hill
Silicone will not bond to a dirty surface. Where the joint wasn’t cleaned and degreased, the bead can peel away early.
These are the problems we’re asked about most:
- Water getting into a conservatory at the joints
- Rooflight joints letting water in
- Black or yellowed silicone on glass joints
- Water tracking down the inner face of the glass
Cannon Hill is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Questions to ask before you book
- What happens if they find a problem under the old sealant
- What the cure time is
- Whether they seal over old material or remove it
- Who turns up on the day
Frames and glazing around Cannon Hill
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. With historic houses such as Southside House (about 1.2 miles north-west) nearby, there’s older building stock in the area around Cannon Hill as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
In the older streets around St James Merton, the joint between an old wall and a newer frame is normally the first place rain gets in. Rented homes near South Merton station change hands often, and glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Cannon Hill is about 1 mile north-west of Morden, in Greater London. Whether you’re in the middle of Cannon Hill or further out, we cover glazing silicone for every kind of property. Our Greater London coverage runs to 764 places, Cannon Hill among them. Our London page covers work nearby (9 miles or so).
Our applicators cover all of SW20, SM4 and KT3 for glazing silicone. Whether your property is on Aylward Road, Camborne Road and Botsford Road or anywhere close by, our applicators can take on the job. Close by, we work in Bushey Mead (1 mile north-west), Raynes Park (1 mile west), Wimbledon Chase (1 mile north), West Barnes (1 mile west) and Merton Park (1 mile north-east). Within a short drive, we also cover London (9 miles north-east), City of Westminster (8 miles north), Marylebone (9 miles north), Kensington (7 miles north), St Pancras (10 miles north-east) and Shoreditch (11 miles north-east).
Landmarks near Cannon Hill
Locally, jobs take us to homes and businesses close to The Edward Rayne pub, Cannon Hill Common and Harris Academy Wimbledon. For rail, the closest station is South Merton station, about 0.5 miles north-east of the centre. Nearby you will also find St. Anthony's Hospital (1.5 miles south) and Wimbledon Museum (1.6 miles north). Open spaces near Cannon Hill include Cherry Wood and Henman Hill.
How it works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from an hour or two to most of a day, depending on the size of the job. For a job in Cannon Hill, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First, we check where the water gets in.
- We remove the old sealant carefully.
- The joint is cleaned and degreased.
- A neutral-cure glazing silicone is applied and tooled.
- Each joint is checked and, where possible, water-tested.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- For business premises, tell us about site rules or sign-in
- Mention any parking rules near the property
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or email us with the details, and photos are welcome.
Advice
Should I try it myself first?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Looking after it afterwards
How long the joints last depends on use and care. We suggest:
- Use a gentle glass cleaner and a soft cloth
- Run a squeegee over the glass when you’re done
- Avoid scraping close to the bead
- Inspect the sealant on glazing annually
Don’t use blades or scrapers near the bead when you clean. A soft cloth or sponge is best.
Damp patches, drips and condensation along a joint are worth checking. The cause may be sealant or another part and we’ll find out which.