Greater London · England
Northolt Glazing Silicone
Glazing silicone for Northolt, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Black or yellowed silicone on glass joints
- A quick top-up bead that didn’t last
- Leaking glazing joints on a rooflight
Why it’s worth doing now in Northolt
You don’t need new glazing because the sealant has gone. Sound glass and frames usually just need resealing. 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.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What you get with us
- One-year guarantee on every job
- We’re fully insured
- Sealant colour chosen to suit
- Tidy, careful work
See how sealant jobs are priced and our reviews.
How we handle glazing silicone in Northolt
Frameless shower screens rely on sealant to keep water in. The joint down the wall and the one along the tray are common leak points, and we reseal both. If you’re dealing with shower screens leaking along the wall or tray and a quick top-up bead that didn’t last, we can put it right, whatever the surface.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease usually says who is responsible for the windows, so it’s worth checking before booking, and access in Northolt is something to talk through when you book.
All our work comes with a one-year guarantee, wherever you are in Greater London.
- Location
- Northolt (UB5, UB6)
- Region
- Greater London
- Cover
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Northolt
Other services in Northolt
Common questions in Northolt
Can you do glazing silicone in Northolt?
Yes, Northolt is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
I let a flat near Northolt Park station. Can you help?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or email us with the details for a clear quote.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
Where are you based?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.
Is the work guaranteed?
Our 12-month guarantee applies to every job we do.
How much does glazing silicone cost in Northolt?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before we start.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
What the job involves on each surface
Shower screens
Mouldy or lifting sealant on a screen leaks. Cutting it out and resealing fixes it.
Glass-to-frame joints
Glass-to-frame joints need a sealant that bonds to both. We choose a product that suits both.
Landlords, agents and businesses in Northolt
Landlords and letting agents in Northolt can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Avoid scraping close to the bead
- Check the gutters above the glazing for debris
- Keep air moving in the conservatory
- Inspect the sealant on glazing annually
Clear the conservatory gutters regularly, so water drains away from the joints. Blocked gutters can push water where it shouldn’t go.
A small conservatory leak soon spreads. Water runs along frames and down walls so it’s best dealt with straight away.
Frames and glazing around Northolt
With historic houses such as Northolt Manor (about 0.3 miles south) nearby, there’s older building stock in the area around Northolt as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. In a converted house or block, who looks after the windows depends on the lease, so check that before you book.
For site and facilities teams at buildings such as Willow Tree Primary School, the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near St Richard's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you let a flat or house near Northolt Park station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Northolt is about 2 miles south-west of Harrow, in Greater London. From the centre of Northolt to the outskirts, we cover glazing silicone for every kind of property. Northolt is one of 764 places in Greater London where we work for glazing silicone. Our London page covers work nearby, about 12 miles away.
We work across the UB5 and UB6 postcode area for glazing silicone. We cover properties on Church Road, Eastcote Lane North and Tenby Gardens and the roads around them. Other places close to Northolt include South Ruislip (1 mile north-west), Greenford (1 mile south-east), South Harrow (1 mile north-east), Yeading (2 miles south-west) and Yiewsley (2 miles south-west). Larger places within reach include London (12 miles east), City of Westminster (10 miles east), Marylebone (10 miles east), Kensington (8 miles south-east), St Pancras (11 miles east) and Shoreditch (13 miles east).
Near you in Northolt
Around Northolt, our work takes us to homes and buildings near Northala Fields, The Greenwood Public House and Northolt High School and the streets around them. Northolt’s nearest station is Northolt Park station, about 0.7 miles north-east. Nearby you’ll also find Heath Robinson Museum (3.1 miles north) and Clementine Churchill Hospital (2 miles north-east). Green spaces nearby include Islip Manor Meadows and Northala Fields.
When it isn’t the sealant
In fairness, some problems need a different trade:
- Condensation trapped between two panes
- Leaks from the roof covering or flashing (a roofer’s job)
- A sagging or failing conservatory roof
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Glass balustrade bases
- Rooflights
- Conservatory frames
- Glass-to-glass joints
- Shower screens
- Glass-to-frame joints
What affects the quote in Northolt
Your quote is based on your job. We look at:
- Whether the work is at height
- Any working-time requirements on site
- The old material and how stubborn it is
- Mould in or behind the old joints
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start, so you know where you stand.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- Where the job is, and your postcode
- What’s wrong with the joints now
- Any previous sealing or DIY work
- How we’d reach the joints
To get a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
What we do, step by step
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for most jobs. In Northolt, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, we check where the water gets in.
- The failed silicone is cut out without marking the glass or frame.
- 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
- Keep pets and children clear of the area while we work
- Move anything stored near the joints
- Mention any leaks or damp you’ve noticed
Ask for a quote
Need a quote? Please call 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear quote before any work starts.