Greater London · England
Upper Holloway Glazing Silicone
Glazing joints in Upper Holloway need attention? We remove the old material, prepare the joints and seal them properly.
- Shower screens leaking along the wall or tray
- New silicone smeared over old sealant
- Water getting into a conservatory at the joints
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Glazing silicone in Upper Holloway
Not every silicone suits glass. We use a neutral-cure glazing silicone that’s suited to glass and the frame, finished with a neat, even bead. We work on glass balustrade bases, conservatory frames and glass-to-glass joints, and people most often call us about black or yellowed silicone on glass joints and water running down inside the glass.
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, you get the same one-year guarantee.
- Place
- Upper Holloway (N19, N7, N6)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Frames and glazing around Upper Holloway
Historic houses like Witanhurst (about 0.9 miles west) are a reminder that the area around Upper Holloway has older buildings as well as new. Where a home is older, 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.
If you live in an older home near St Andrew's Whitehall Park, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. As a London address, Upper Holloway can be tricky for parking: let us know about parking bays, permits or a driveway.
Upper Holloway is about 2 miles east of Hampstead, in Greater London. Our applicators cover glazing silicone for homes and businesses in Upper Holloway and the surrounding area. Our area takes in 764 places across Greater London, from the larger towns to small villages.
Our applicators cover all of the N19, N7 and N6 postcode area for glazing silicone. Whether your property is on Ward Road, Kiver Road and Foxham Road or a nearby road, our applicators can take on the job. Upper Holloway sits on or near the A103, so getting to you is simple. We also cover Tufnell Park (1 mile south), Dartmouth Park (1 mile south-west), Highgate (1 mile north-west), Nag's Head (1 mile south-east) and Holloway (1 mile south-east). Larger places within reach include London (5 miles south), City of Westminster (4 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), St Pancras (3 miles south) and Shoreditch (4 miles south-east).
Landmarks near Upper Holloway
We work in homes and buildings around City of London Academy, Whittington Park and The Mother Red Cap pub, among other places. Other local landmarks include Asanté Academy of Chinese Medicine (1.2 miles north-west) and Vaughan Williams Memorial Library (2 miles south). Upper Holloway has its own railway station: Upper Holloway station. Other landmarks nearby include The Mall Wood Green (2.3 miles north-east) and Royal Northern Hospital (0.5 miles south-east). Open spaces near Upper Holloway include Dartmouth Park Hill and Parkland Walk.
Why deal with it now?
If the problem is a misted unit or a broken panel, sealant will not help. We say so plainly and point you to a glazier or roofer. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
Why Upper Holloway customers choose us
- An ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- We leave the area clean and tidy
- Domestic, commercial and hotel work
What we cannot put right
A few problems are outside what sealant work can do:
- Failed flashing around a conservatory
- A broken pane or roof panel
- A frame that needs repairing or replacing
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Rooflights
- Glass-to-frame joints
- Glass balustrade bases
- Conservatory frames
- Glass-to-glass joints
- Shower screens
Upper Holloway questions
Do you cover Upper Holloway for glazing silicone?
Yes, Upper Holloway is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
I let a flat near Upper Holloway station. Can you help?
Yes. We work for landlords and agents as well as householders. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you offer different sealant colours?
Normally, yes. Sealants come in white, clear, grey and other colours, and we agree the colour with you before any work starts.
How much does glazing silicone cost in Upper Holloway?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or send us an email with a short description of the job.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
Is it messy?
We keep the work tidy. Nearby surfaces are protected.
Can you fix a leaking conservatory?
If the water is coming in through failed sealant joints, yes. If it’s a broken panel, failed unit or roof problem, we’ll tell you.
Will the old sealant be removed?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
What happens on the day
On the day, we start by going over the job with you, so you know exactly what we’re doing. Surfaces next to the work are protected before any work begins. Most jobs take anything from an hour or two to most of a day, depending on the size of the job. In Upper Holloway, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- First we agree the joints to be done.
- Old sealant is removed from the glass and frame.
- We clean and prepare the joint.
- New glazing silicone goes in and is finished neatly.
- We inspect the work and test it where we can.
How to prepare
- Mention any parking rules near the property
- Keep children and pets away from the work area
- Mention any sign-in or site rules at work premises
Ask for a quote
For glazing silicone in Upper Holloway, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
Related advice
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Use a gentle glass cleaner and a soft cloth
- Keep conservatory gutters clear of leaves
- Wipe the screen down after showering
- Keep harsh solvents off the silicone
Keep conservatory gutters clear so water doesn’t back up against the seals. Overflowing gutters can cause leaks of their own.
Drips or damp near a glazing joint shouldn’t be ignored. The cause may be sealant or another part, and we’ll tell you which.
Signs you need glazing silicone in Upper Holloway
Sealant laid over old sealant does not last. Plenty of leaks come from a quick top-up over the old bead, and water gets between the layers.
The problems people usually mention when they call are:
- Water running down inside the glass
- Glazing silicone that has cracked or come away
- Water getting into a conservatory at the joints
- Cracked silicone between glass panels
Managing a site like St John's Upper Holloway CofE Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- Who turns up on the day
- How long to leave it before use
- What preparation is included
- How hidden problems are handled
How we quote for glazing silicone
The quote reflects the job in front of us. We look at:
- The size of the job
- How many areas need sealing
- Access and height
- How much old sealant there is and how hard it is to remove
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
What we need to know
Photos help, but a description is a good start. Please mention:
- Any access issues, like height or stairs
- Pictures of the joints, sent by email
- The rough size of the job
- The address or postcode of the job
Want a quote for glazing silicone? Please phone 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before work begins.