Greater London · England
Glazing & conservatory sealant in Merton, Greater London
Glazing silicone for conservatories, rooflights, glass panels and shower screens for Merton, backed by a one-year guarantee. Call for a quick quote.
- Stained, discoloured glazing silicone
- Silicone pulling away from the glass
- Drips on the inside of a conservatory window
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Inspect the sealant on glazing annually
- Avoid scraping close to the bead
- Run a squeegee over the glass when you’re done
- Keep conservatory gutters clear of leaves
Check the joints once a year. Spotting a crack early means a simpler fix, before water gets in.
Don’t leave lifting or mouldy silicone on glazing. Once it starts to peel, water gets behind it and the leak gets worse.
Glazing silicone for homes and businesses in Merton
Glass and frames expand and contract differently, so the sealant between them does a lot of work. Once it splits or comes away, water finds a way through. We replace it with a glazing silicone that suits the glass and frame. We work on shower screens, conservatory frames and rooflights, and people most often call us about rooflight joints letting water in and leaks where conservatory glass meets the frame.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Merton.
You are covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or send us an email.
- Location
- Merton (SW19)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
The process
There isn’t much for you to do on the day. Point us to the joints and we’ll get on with it. The job generally takes a few hours, depending on how many joints need doing, including the tidy-up. 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 trace the leak and confirm it’s a sealant joint.
- We remove the old sealant carefully.
- We clean the glass and frame so the new silicone bonds.
- A neutral-cure glazing silicone is applied and tooled.
- We check the finished joints and test with water where it’s safe.
Getting ready for the visit
- Mention any tricky access
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, ring 0345 464 0079 or drop us an email.
Related advice
How the job changes by surface
Rooflights
We reseal the glazing joints on rooflights. Leaks from the roof itself need a roofer.
Glass-to-frame joints
We cut the old silicone from the glass without scratching it before new glazing silicone goes in.
Glazing silicone in Merton: local notes
Historic houses like Southside House (about 1.8 miles west) are a reminder that the area around Merton has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
Letting a property close to Haydons Road station? Then a shower screen or conservatory joint that leaks is easier to reseal while the property is empty. Homes close to St John The Divine include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Merton is about 1 mile south-east of Wimbledon, in Greater London. Wherever you are in the SW19 postcode area, we can carry out glazing silicone at your property. Across Greater London, we cover 764 places, and Merton is one of them. London is on our list too, around 7 miles away.
All of SW19 is covered for glazing silicone, from the main roads to the quietest streets. Local streets include High Path, Pincott Road and Hayward Close. You’ll find Merton on the A24, which makes it straightforward to reach with everything needed for glazing silicone. We also cover Merton Abbey (1 mile east), South Wimbledon (1 mile north-west), Colliers Wood (1 mile east), Tooting Bec (1 mile north-east) and Summerstown (1 mile north). Within a short drive, we also cover London (7 miles north-east), City of Westminster (7 miles north), Marylebone (7 miles north), Kensington (6 miles north), St Pancras (8 miles north) and Shoreditch (9 miles north-east).
Around Merton
Locally, jobs take us to homes and businesses close to The Nelson Arms, Wimbledon School of Art and Wandle Park and the streets around them. For rail, the closest station is Haydons Road station, roughly 0.8 miles north of the centre. A little further out are Southside Wandsworth (2.8 miles north) and St George's Hospital (1.1 miles north-east). Not far away are Henman Hill and Merton Park Green Walks.
Landlords, agents and businesses in Merton
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Common problems we fix in Merton
Sealant laid over old sealant does not last. Many failed joints we see have been topped up rather than cut out, and water gets between the layers.
Keep an eye out for these signs:
- Cracked silicone between glass panels
- Stained, discoloured glazing silicone
- Leaks where conservatory glass meets the frame
- Drips on the inside of a conservatory window
Managing a site like Merton Abbey Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
What your quote should include
- How long the guarantee is
- What the quote includes, VAT included or not
- Is the old sealant removed completely?
- Are they insured?
FAQs for Merton
I let a flat near Haydons Road station. Can you help?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Is parking a problem for a job in Merton?
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.
Why not top up the existing silicone?
It doesn’t last. The new bead cannot grip the old one, so we remove the old sealant and clean the joint.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Do you work in Merton?
Yes, we do. Our applicators work in Merton, and the service is the same as everywhere else.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Do you offer different sealant colours?
We will suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.
Should I try it myself first?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Leave it or put it right?
You do not need new glazing because the sealant has gone. If the glass and frame are sound, new silicone is often all it takes. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. We give a clear quote before we start.
Why us?
- Approved under the ARBOMaster scheme
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
- Experience in homes, commercial sites and hotels
Take a look at what affects the cost and what customers say.