Greater London · England
Glazing Silicone in Lissenden Gardens
Glazing silicone for Lissenden Gardens, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaks from the base of a shower screen
- Conservatory leaks at frame and glazing joints
- Black or yellowed silicone on glass joints
Glazing silicone in Lissenden Gardens
Glass replacement is not something we do and a misted double-glazed unit needs a glazier. Our work is the sealant joints and that’s often where the water gets in. Common call-outs are for silicone pulling away from the glass and rooflight joints letting water in, on conservatory frames, glass-to-frame joints and glass balustrade bases.
London has a lot of flats and conversions, where windows are often on upper floors. Who looks after the outside of the frames can depend on the lease, so check that first, and access in Lissenden Gardens is something to talk through when you book.
Our work is backed for twelve months, in Lissenden Gardens and everywhere else we cover.
- Location
- Lissenden Gardens (NW5, NW3, N19)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Glazing silicone in Lissenden Gardens: local notes
With historic houses such as Keats House (about 0.8 miles west) nearby, there’s older building stock in the area around Lissenden Gardens as well as newer homes. 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.
If you live in an older home near Highgate Road Chapel, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you look after a building such as Parliament Hill School, the mastic around its windows and doors needs looking after like any other building’s.
Lissenden Gardens is about 1 mile east of Hampstead, in Greater London. If you need glazing silicone in Lissenden Gardens, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover Greater London from our Crawley base. Across Greater London, we cover 764 places, and Lissenden Gardens is one of them.
Postcode districts we cover here for glazing silicone: NW5, NW3 and N19. Local streets include Rona Road, Dale Road and Fleet Road. We also cover the places around Lissenden Gardens: Gospel Oak (1 mile south), Dartmouth Park (1 mile north-east), Tufnell Park (1 mile east), Kentish Town (1 mile south) and Chalk Farm (1 mile south). Larger places within reach include London (5 miles south-east), City of Westminster (3 miles south), Marylebone (3 miles south), Kensington (5 miles south-west), St Pancras (3 miles south-east) and Shoreditch (4 miles south-east).
Local landmarks in Lissenden Gardens
We work in homes and buildings around Parliament Hill, The Royal School and Gospel Oak Primary School, among other places. Other local landmarks include The Bull and Last pub (less than half a mile north-east) and Cecil Sharp House (1.3 miles south). There’s a railway station in Lissenden Gardens itself: Gospel Oak station. Well-known places in the area include Royal Northern Hospital (1.2 miles east) and Montfichet's Tower (3.7 miles south-east). Not far away are Parliament Hill and The Long Water.
Lissenden Gardens: your questions answered
Can you do glazing silicone in Lissenden Gardens?
Yes. We work across London and the South East, and Lissenden Gardens is part of that. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
I let a flat near Gospel Oak station. Can you help?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear price.
Can you quote for more than one area?
Yes. Just list everything you need.
Do you hold any approvals?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. Then ring 0345 464 0079 or drop us an email.
Do you replace glass?
That is not something we do. A misted unit has failed inside, and a glazier needs to replace it.
How long does glazing silicone take?
Most jobs take a few hours for most jobs, including preparation and clearing up. Your quote will say how long we expect yours to take.
Will you leave a mess?
Tidy work is part of the job. We protect what’s around the joints, and we clear up when we are done.
Signs you need glazing silicone in Lissenden Gardens
Heat and cold make glass and frames move at different rates. In time, the sealant splits or pulls away.
Look out for any of the following:
- Drips on the inside of a conservatory window
- Mouldy sealant around glass panels
- Shower screens leaking along the wall or tray
- Conservatory leaks at frame and glazing joints
If you let a flat or house near Gospel Oak station, leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies.
What to look for in a quote
- Whether all the old sealant comes out first
- How the joint is cleaned and prepared
- How much experience the applicator has
- What the cure time is
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
How the job changes by surface
Glass balustrade bases
Glass balustrades sit in a channel that is often finished with sealant. Failed sealant there lets water collect.
Glass-to-glass joints
These joints are on show, so we take care to leave a neat bead.
Also near Lissenden Gardens
Other services in Lissenden Gardens
How it works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes anything from an hour or two to most of a day, depending on the size of the job from start to finish. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Lissenden Gardens. It helps if you can point us to a visitor permit or a bay close to the door.
- First, we trace the leak and check it’s coming through a sealant joint.
- We cut out the failed silicone, taking care of the glass and frame.
- Surfaces are cleaned with a solvent suited to glass and the frame.
- New glazing silicone goes in and is tooled to a neat finish.
- The finished joints are checked and, where it’s safe, tested with water.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
How to get a quote
Asking for a quote is easy: let us know what needs doing and where and its rough size. Photos by email help us understand the job, and we will take it from there.
Related advice
Keeping the joints in good condition
Looking after new joints is easy:
- Use gentle products around the joints
- Clear the conservatory gutters regularly
- Open vents or windows to let moisture out
- Look over the glazing joints once a year
Keep conservatory gutters clear so water does not back up against the seals. Blocked gutters can push water where it shouldn’t go.
Act on black or lifting silicone early. Once it starts to peel, water gets behind it and the leak gets worse.
Why deal with it now?
Replacing windows or a shower screen is not needed for a failed joint. If the glass and frame are sound, new silicone is often all it takes, and we’ll tell you if that’s not the case. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Lissenden Gardens, the repair is bigger than a sealant job.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Call for a quick quote and we’ll explain what it covers.
Why choose Mr Mastic in Lissenden Gardens
- You choose the colour before work begins
- Full insurance on every job
- Domestic, commercial and hotel work
- A choice of colours where the product allows
See what affects the cost and what customers say.
When something else is needed
In fairness, there are a few things sealant won’t fix:
- Structural problems with a conservatory roof
- Water coming through the roof rather than a sealant joint
- Rotten or badly damaged frames
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think before booking.
Joints and surfaces we work on
- Conservatory frames
- Glass balustrade bases
- Glass-to-glass joints
- Glass-to-frame joints
- Shower screens
- Rooflights