Greater London · England
Glazing & conservatory sealant in Greenhill, Greater London
Glazing silicone for Greenhill, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Water escaping where a screen meets the wall
- Water running down inside the glass
- Failed joints on frameless glass
About our glazing silicone in Greenhill
Glazing silicone is a maintenance item. Sun, rain and movement wear it down and cracked joints let water in. Resealing puts that right. We work on rooflights, glass-to-frame joints and conservatory frames, and common reasons people get in touch are sealant that was laid over old silicone and failed and silicone pulling away from 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.
You’re covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or email us.
- Where
- Greenhill (NW3, NW6)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
New sealant cannot fix everything, and we’ll tell you before we start. Sealant won’t put right:
- Structural problems with a conservatory roof
- Cracked or broken glass
- Failed flashing around a conservatory
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Glass balustrade bases
- Glass-to-frame joints
- Shower screens
- Glass-to-glass joints
- Conservatory frames
- Rooflights
Common problems we fix in Greenhill
Shower screen silicone gets wet every day. Mould gets into it and the joint starts to lift.
It’s worth asking for a quote if you see:
- Leaking glazing joints on a rooflight
- Water running down inside the glass
- Water getting into a conservatory at the joints
- Silicone pulling away from the glass
As a London address, Greenhill can be tricky for parking: let us know about parking bays, permits or a driveway.
Before you book anyone
- What product goes in the joint
- Whether they seal over old material or remove it
- How much experience the applicator has
- What preparation is included
How it works
On the day, we start by going over the job with you. Surfaces next to the work are protected before any work begins. Most jobs take a few hours, depending on how many joints need doing. In Greenhill, 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.
- We look at the glazing and agree which joints need resealing.
- We cut away the failed silicone.
- 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.
Preparing for the visit
- Move anything stored near the joints
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
Ask for a quote
For glazing silicone in Greenhill, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Read more
Greenhill homes and the weather
Historic houses like 2 Willow Road (about 0.3 miles north-east) are a reminder that the area around Greenhill has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking.
For landlords with property near Hampstead Heath station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. In the older streets around Rosslyn Hill Unitarian Chapel, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Greenhill is about 1 mile north-east of Hampstead, in Greater London. From the centre of Greenhill to the outskirts, we cover glazing silicone for every kind of property. Across Greater London, we cover 764 places, and Greenhill is one of them.
Work in NW3 and NW6 works the same way as everywhere else we cover. Whether your property is on Back Lane, Well Road and Ornan Road or a nearby road, our applicators can take on the job. Nearby, we also carry out glazing silicone in Hampstead (1 mile south-west), Vale of Health (1 mile north), West Hampstead (1 mile west), Fortune Green (1 mile west) and Haverstock (1 mile south-east). Within a short drive, we also cover London (5 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south-east), Kensington (4 miles south), St Pancras (3 miles south-east) and Shoreditch (5 miles south-east).
Around Greenhill
Around Greenhill, our work takes us to homes and buildings near Cecil Sharp House, Fitzjohn's Primary School and King William IV Public House, among other places. Other local landmarks include South Hampstead High School (0.6 miles south) and Hampstead Heath (0.7 miles north-east). Greenhill has its own railway station: Hampstead Heath station. Well-known places in the area include New End Hospital (under half a mile north-west) and Montfichet's Tower (4.3 miles south-east). For a walk, there’s Belsize Wood and Parliament Hill.
FAQs for Greenhill
Do you cover Greenhill for glazing silicone?
Yes. We work across London and the South East, and Greenhill is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear price.
Is parking an issue for glazing silicone in Greenhill?
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 quote for more than one area?
Yes. Several rooms, windows or areas can go on one quote.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little, and any smell fades as they cure.
Can a conservatory leak be sealed?
In many cases, as long as sealant is the cause. We find where the water gets in first before any sealing.
Can you match the sealant colour?
Normally, yes. White, clear and grey are common, and other colours are available, and we’ll agree it with you first.
Aftercare tips
So the new joints stay in good condition:
- Don’t leave a drip for the next storm
- Avoid scraping close to the bead
- Run a squeegee over the glass when you are done
- Open vents or windows to let moisture out
Look over the glazing joints every year or so. Spotting a crack early means a simpler fix, before water gets in.
A leaking shower screen may not show at first. Water can soak into the floor or reach the room below before you spot it.
Should I try it myself first?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
What happens if it’s left?
Silicone around glazing needs the right product. A general-purpose tube may not bond well or may react with the frame so we choose a glazing silicone instead. In a flat in Greenhill, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or email us.
Why us?
- Full insurance on every job
- Anti-fungal silicone where joints get wet
- We never seal over old sealant
- 12-month guarantee on every job
Read what affects the cost and customer reviews.
Towns and villages near Greenhill
Other services in Greenhill
What the job involves on each surface
Glass balustrade bases
Outdoor balustrade joints face the weather. Renewing the sealant keeps water out of the channel.
Rooflights
A rooflight faces rain and sun from above. Its sealant ages faster than vertical joints.