Greater London · England
Glazing & conservatory sealant in North Kensington, Greater London
Glazing silicone for North Kensington, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Glazing silicone that has cracked or come away
- A quick top-up bead that didn’t last
- Water running down inside the glass
What affects the cost of glazing silicone
The price is agreed before any work begins. It takes into account:
- Mould in or behind the old joints
- The number of rooms or windows
- How much there is to do
- The product the joint needs
The cost 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 work begins.
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:
- Where the job is, and your postcode
- The problem you’ve noticed
- How many joints, rooms or windows are involved
- If someone has resealed it before
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will explain what’s involved and give you a clear quote.
How we handle glazing silicone in North Kensington
Many conservatory leaks come down to failed sealant, where glass meets frame or frame meets wall. We find the joint that’s letting water in and renew it and tell you plainly if the cause is something else. We are often asked to deal with failed sealant around rooflight glass and leaks where conservatory glass meets the frame, across glass balustrade bases, shower screens and conservatory frames.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in North Kensington as anywhere.
There’s a 12-month guarantee on every job.
- Place
- North Kensington (W10, NW10, W11)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How the visit 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. Most jobs then take a few hours for most jobs. In North Kensington, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We find where water is getting in and check whether it’s a sealant joint.
- The old sealant is removed from the glass and frame without scratching them.
- Surfaces are cleaned with a solvent suited to glass and the frame.
- Glazing silicone suited to the joint is applied and tooled.
- The finished joints are checked and, where it’s safe, tested with water.
How to prepare
- Let us know about earlier repairs to the joints
- For indoor joints, keep the area dry beforehand if you can
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
Related advice
What we can’t put right
Sealant is not the answer to every problem, and we’ll tell you before we start. Sealant won’t put right:
- A sealed unit that has misted inside
- A roof that has moved or dropped
- Leaks from the roof covering or flashing (a roofer’s job)
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in North Kensington
- Glass balustrade bases
- Rooflights
- Conservatory frames
- Glass-to-glass joints
- Glass-to-frame joints
- Shower screens
Different surfaces, different methods
Glass balustrade bases
The base joint is cut out and resealed. Glass fitting is a separate trade.
Glass-to-frame joints
Where glass sits in a frame, silicone keeps water out. When it splits, water can get into the frame.
Work for landlords, hotels and businesses
We work for landlords and letting agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we are fully insured.
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. Everything old must be removed first.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Why deal with it now?
A new conservatory roof is a big job. Where the water is getting in through sealant, resealing is far simpler. If it’s the roof itself, we will tell you. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler for homes in North Kensington.
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email and we will talk you through it.
Why us?
- Rated 4.9 stars on Google
- Homes, businesses and hotels
- Colour picked to suit the job
- Approved under the ARBOMaster scheme
Take a look at what affects the cost or what customers say.
FAQs for North Kensington
Is parking an issue for glazing silicone in North Kensington?
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.
Is North Kensington in your area for glazing silicone?
Yes, North Kensington is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll send you a clear quote.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Are you insured?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Do you work for landlords and businesses?
Yes, often. We can quote for several properties at once, and between tenancies is a good time for the work.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit.
Frames and glazing around North Kensington
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
North Kensington is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. Rented homes near Kensal Green station change hands often, and leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. If you look after a building such as Barlby Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
North Kensington is about 2 miles north-west of Kensington, in Greater London. From the centre of North Kensington to the outskirts, glazing silicone is available for homes and businesses alike, from flats and houses to offices and hotels. Across Greater London, we cover 764 places, and North Kensington is one of them. London is on our list too, around 6 miles away.
Work in W10, NW10 and W11 works the same way as everywhere else we cover. Streets in the area include Peach Road, Barlby Road and Eynham Road. If you are just outside North Kensington, we cover Kensal Town (1 mile east), Kensal Green (1 mile north-west), Kensal Rise (1 mile north), Notting Dale (1 mile south-east) and White City (1 mile south). We also work in nearby towns such as London (6 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (4 miles east), Shoreditch (6 miles east) and Walthamstow (9 miles north-east).
Near you in North Kensington
In North Kensington, that means homes and buildings near Little Wormwood Scrubs, Maida Vale School and The Eagle pub and the streets around them. North Kensington’s nearest station is Kensal Green station, roughly 0.5 miles north of the centre. Nearby you will also find Princess Louise Hospital (less than half a mile south-west) and Culture House (1.3 miles south). The countryside around North Kensington includes Campden Hill and Greville Place nature reserve.