Greater London · England
Glazing & conservatory sealant in Belsize Park, Greater London
Glazing silicone in Belsize Park from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Split or lifting silicone on glass
- Rooflight joints letting water in
- Glass-to-glass joints that have split
How the job changes by surface
Glass balustrade bases
The base joint is cut out and resealed. Glass fitting is a separate trade.
Glass-to-glass joints
Frameless glass corners and panels are joined with silicone. We reseal with a suitable glazing silicone.
Glazing silicone in Belsize Park, done properly
Conservatory leaks often start at a sealant joint at the glass-to-frame or frame-to-wall joints. We find the joint that is letting water in and renew it, and if it’s something sealant can’t fix, we will tell you. If you have glazing silicone that has cracked or come away and rooflight joints letting water in, 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, letting in draughts and water.
Whatever the size of the job, it’s backed by our one-year guarantee in Belsize Park and across Greater London.
- Location
- Belsize Park (NW3, NW5, NW1)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we’re called out for in Belsize Park
Shower screen silicone gets wet every day. Mould gets into it and the edges begin to peel.
The problems people usually mention when they call are:
- Stained, discoloured glazing silicone
- Rooflight joints letting water in
- Water running down inside the glass
- New silicone smeared over old sealant
Managing a site like Fine Arts College? Then the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- Which colour the sealant will be
- Is VAT in the price?
- Whether the sealant suits the joint
- Who does the work, and how experienced they are
Common questions in Belsize Park
Do you work for landlords with property near South Hampstead station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
Is parking a problem for a job in Belsize Park?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Can a conservatory leak be sealed?
It depends on the cause. Sealant joints we can renew but roof and panel problems need another trade.
Can you reseal a frameless shower screen?
Yes. We remove the old silicone carefully, and the joints are cleaned and resealed.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We’ll give you the cure time for the product we used before we leave.
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.
Can you just put new silicone over the old?
Topping up is a common cause of leaks. A proper job means cutting out, cleaning and resealing.
Frames and glazing around Belsize Park
Historic houses like Keats House (about 0.8 miles north) are a reminder that the area around Belsize Park 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. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Church of St Mary the Virgin, the joint between an old wall and a newer frame is usually the first place rain gets in. Belsize Park is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Belsize Park is about 1 mile south-east of Hampstead, in Greater London. If you need glazing silicone in Belsize Park, please phone 0345 464 0079 or email us for a quick quote. We cover Greater London from our Crawley base, Belsize Park included. We cover 764 towns and villages across Greater London.
All of NW3, NW5 and NW1 is within our area for glazing silicone, from the main roads to the quietest streets. We cover properties on Eton Road, Lawn Road and Ornan Road and the roads around them. Other places close to Belsize Park include Haverstock (1 mile north), Primrose Hill (1 mile south), South Hampstead (1 mile west), Swiss Cottage (1 mile west) and Chalk Farm (1 mile east). We also work in nearby towns such as London (4 miles south-east), Kensington (4 miles south-west), Shoreditch (4 miles east), Walthamstow (7 miles north-east), Hoxton (3 miles east) and Whitechapel (4 miles south-east).
What’s near Belsize Park
Locally, jobs take us to homes and businesses close to The Washington pub, Primrose Hill and St. Mary's Town and Country School and the streets around them. Other local landmarks include Cecil Sharp House (0.8 miles south-east) and St Paul's Church of England Primary School (less than half a mile south). The closest station to Belsize Park is South Hampstead station, about 0.7 miles west of the centre. A little further out are Wellington Hospital (0.9 miles south-west) and O2 Centre (0.8 miles west). Not far away are Adelaide Nature Reserve and The Long Water.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. 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.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- Condensation trapped between two panes
- Glass that needs replacing
- Frames that have decayed or split
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
What we seal
- Glass-to-frame joints
- Glass balustrade bases
- Glass-to-glass joints
- Rooflights
- Shower screens
- Conservatory frames
What we do, step by step
We keep the work tidy and contained to the joints we’re treating, so you can carry on as normal. The job usually takes a few hours for most jobs, and we explain the cure time before we leave. For a job in Belsize Park, 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.
- We trace the leak and confirm it’s a sealant joint.
- The failed silicone is cut out without marking the glass or frame.
- We clean the glass and frame so the new silicone bonds.
- We lay the new bead and tool it smooth.
- We check the finished joints and test with water where it’s safe.
Preparing for the visit
- Let us know about stairs, lifts or work at height
- Keep pets and children clear of the area while we work
- For business premises, tell us about site rules or sign-in
Ask for a quote
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and send you a clear quote before work begins.
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Landlord and commercial work in Belsize Park
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Nearby places to Belsize Park
Also in Belsize Park
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. Our tips:
- Clear the conservatory gutters regularly
- Inspect the sealant on glazing annually
- Do not use a blade near the sealant
- Use gentle products around the joints
Gentle products are best near the sealant. Harsh solvents may damage the bead.
If silicone on glass has cracked, water is already getting in. Resealing now is a small job compared with fixing water damage later.