Greater London · England
Glazing & conservatory sealant in New Barnet, Greater London
Glazing silicone in New Barnet from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Stained, discoloured glazing silicone
- Water getting into a conservatory at the joints
- Cracked silicone between glass panels
Glazing silicone in New Barnet, done properly
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. If you have cracked silicone between glass panels and drips on the inside of a conservatory window, we can help.
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 New Barnet.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- New Barnet (EN5, EN4, N20)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Look over the glazing joints once a year
- Use gentle products around the joints
- Stick to mild cleaners on glass
- Clear the conservatory gutters regularly
Keep the new joints dry for as long as we advise. After that, clean glass with a mild cleaner.
Shower screen leaks can go unnoticed. Water can soak into the floor or reach the room below before you spot it.
Different surfaces, different methods
Glass-to-frame joints
Where glass sits in a frame, silicone keeps water out. When it splits, water can get into the frame.
Shower screens
Mouldy or lifting sealant on a screen leaks. A full reseal sorts it.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
New Barnet questions
Can parking be tricky for a visit in New Barnet?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Can you help a landlord with a rental near New Barnet station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few photos.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
How long will you be here?
Most jobs take anything from an hour or two to most of a day, depending on the size of the job, including the preparation. We’ll confirm how long when we quote.
Is a special sealant needed for glass?
A glazing silicone chosen for the joint. Neutral-cure products suit most glass and frames, as some acetoxy types can attack certain metals.
Can a conservatory leak be sealed?
Often, if the leak is at a sealant joint. We find where the water gets in first, so you know what you are paying for.
Is it enough to run a bead over the old sealant?
Many leaks we see come from exactly that. A proper job means cutting out, cleaning and resealing.
When something else is needed
We’d rather tell you now than do work that will not last, so these are the limits:
- A sagging or failing conservatory roof
- Glass that needs replacing
- A frame that needs repairing or replacing
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
What we seal
- Glass-to-frame joints
- Rooflights
- Conservatory frames
- Glass-to-glass joints
- Glass balustrade bases
- Shower screens
Leave it or put it right?
A new conservatory roof is a big job. If the leak is a failed sealant joint renewing the joint is the simpler fix. If it’s the roof itself, we’ll tell you. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we will go through it with you.
Why New Barnet customers choose us
- Sealant colour chosen to suit
- 20+ years of sealant experience
- Fully insured
- Colour agreed with you before we start
Read what affects the cost or our reviews.
Quotes for glazing silicone in New Barnet
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
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 will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
To make quoting easier, let us know:
- Whether it’s a home or a business
- A few photos by email, if you can
- How we’d reach the joints
- Roughly how big the job is
For glazing silicone in New Barnet, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Towns and villages near New Barnet
More services for New Barnet
Windows and doors in New Barnet
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking.
Letting a property close to New Barnet station? Then a shower screen or conservatory joint that leaks is easier to reseal while the property is empty. In the older streets around Holy Trinity Lyonsdown, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Schools such as St Mary's CofE Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
New Barnet is about 1 mile east of Barnet, in Greater London. Whether you’re in the middle of New Barnet or further out, glazing silicone is available for homes and businesses alike, from flats and houses to offices and hotels. Across Greater London, we cover 764 places, New Barnet among them. There’s also a page for London, about 11 miles away.
We work across the EN5, EN4 and N20 postcode area for glazing silicone. Local streets include York Road, Park Road and Henry Road, and we cover them all. Close by, we work in Barnet (1 mile west), Cockfosters (1 mile north-east), East Barnet (1 mile south-east), Underhill (1 mile west) and Whetstone (1 mile south). Within a short drive, we also cover London (11 miles south), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (8 miles south) and Shoreditch (9 miles south-east).
Near you in New Barnet
We work in homes and buildings around Trent School Cockfosters, East Barnet School and The Alexandra pub, among other places. There’s a railway station in New Barnet itself: New Barnet station. A little further out are Spires Shopping Centre (1.6 miles north-west) and Francis Skaryna Belarusian Library and Museum (2 miles south). The countryside around New Barnet includes Greenhill Gardens and Darland's Lake.
How it works
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for most jobs, depending on the size of the job. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in New Barnet. It helps if you can point us to a visitor permit or a bay close to the door.
- 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.
- We apply and tool the new silicone.
- The joints are checked before we leave.
Before we arrive
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
Get a quote
Need a quote? Please ring 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.