Greater London · England
Glazing & conservatory sealant in Lisson Grove, Greater London
Glazing silicone in Lisson Grove from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Glazing silicone that has cracked or come away
- Shower screens leaking along the wall or tray
- Water getting into a conservatory at the joints
Windows and doors in Lisson Grove
Historic houses like Winfield House (about 0.4 miles north-east) are a reminder that the area around Lisson Grove has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Lisson Grove is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. For landlords with property near London Marylebone station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
Lisson Grove is about 1 mile north-west of City of Westminster, in Greater London. Our applicators cover glazing silicone for householders, landlords and businesses in Lisson Grove. 764 places in Greater London are on our list, from the larger towns to small villages.
Our applicators cover all of the NW8, W1H and W2 postcode area for glazing silicone. Whether your property is on Hall Road, Park Road and Lodge Road or a nearby road, our applicators can take on the job. With the A5 and A40 close by, Lisson Grove is simple for us to get to. We also cover the places around Lisson Grove: Paddington Green (1 mile south-west), Paddington (1 mile south), Little Venice (1 mile south-west), Connaught Village (1 mile south) and St John's Wood (1 mile north). Larger places within reach include London (4 miles south-east), Shoreditch (4 miles east), Walthamstow (8 miles north-east), Hoxton (4 miles east), Whitechapel (4 miles east) and Ruislip (11 miles west).
Around Lisson Grove
Typical jobs here are in homes near RIBA Library, St John's Wood Art School and Regent's Park, among other places. Lisson Grove has its own railway station: London Marylebone station. Other landmarks nearby include Montfichet's Tower (3 miles east) and Maida Vale Hospital for Nervous Diseases (0.5 miles west). The countryside around Lisson Grove includes The Long Water and Greville Place nature reserve.
About our glazing silicone in Lisson Grove
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 balustrade bases and conservatory frames, and the jobs we see most are conservatory leaks at frame and glazing joints and water tracking down the inner face of 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.
We stand behind the work with a one-year guarantee, so you are covered after we’ve gone.
- Where
- Lisson Grove (NW8, W1H, W2)
- Region
- Greater London
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How it works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for most jobs, and the area is left clean. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We start by finding the leak and making sure sealant is the cause.
- The old sealant is removed from the glass and frame without scratching them.
- We clean the joint with a solvent that suits the glass and frame.
- We apply a neutral-cure glazing silicone and tool it smooth.
- We check the joints and, where safe, run water over them.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Keep pets and children clear of the area while we work
Getting a quote
Want a quote for glazing silicone? Please call 0345 464 0079 or email us and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Towns and villages near Lisson Grove
Other services in Lisson Grove
When to call us in Lisson Grove
UV light ages silicone and roof joints get the most sun. It goes brittle, cracks and stops sticking to the glass and frame.
Signs it’s time to call us include:
- Water tracking down the inner face of the glass
- Glass-to-glass joints that have split
- A quick top-up bead that didn’t last
- Water escaping where a screen meets the wall
Homes close to St Paul's Community Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Questions to ask before you book
- Which colour the sealant will be
- Whether the sealant suits the joint
- Who does the work, and how experienced they are
- What guarantee comes with the work
What the job involves on each surface
Glass balustrade bases
Glass balustrades sit in a channel that’s often finished with sealant. Failed sealant there lets water collect.
Glass-to-frame joints
The sealant must stick to glass and frame alike. We use a glazing silicone suited to each.
Lisson Grove: your questions answered
Is parking a problem for a job in Lisson Grove?
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.
Do you cover Lisson Grove for glazing silicone?
Yes. Our work covers London and the South East, and Lisson Grove is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
Can you do several jobs on one visit?
Yes, we can. More than one area can be quoted together.
Can you match the sealant colour?
We help you choose a colour that suits. The choice depends on the product the joint needs.
Do you fit new glass or sealed units?
No, our work is the silicone. Glass and sealed units need a glazier.
Where is Mr Mastic based?
Our base is in Crawley, and we work across South East England, London and Scotland.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Ventilation helps.
DIY versus a professional finish
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Leave it or put it right?
A leaking joint will not fix itself. Water can damage frames, walls, flooring and furniture so early action saves a bigger repair. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler for homes in Lisson Grove.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will go through it with you.
Why book with us
- White, clear, grey or coloured to suit, where the product allows
- We leave the area clean and tidy
- Domestic, commercial and hotel work
- Old sealant always removed completely
Read our cost guide and customer reviews.
Honest limits
A few problems are outside what sealant work can do:
- Structural problems with a conservatory roof
- Misting between the panes of a double-glazed unit (a failed unit for a glazier)
- Failed flashing around a conservatory
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before you book.
Where we work in Lisson Grove
- Shower screens
- Glass balustrade bases
- Rooflights
- Conservatory frames
- Glass-to-glass joints
- Glass-to-frame joints
Looking after it afterwards
So the new joints stay in good condition:
- Ventilate the conservatory to cut condensation
- Use gentle products around the joints
- Run a squeegee over the glass when you’re done
- Keep conservatory gutters clear of leaves
Squeegee a shower screen after each shower and keep the room ventilated. It helps stop mould getting into the silicone.
Damp patches, drips and condensation along a joint are worth checking. It may be sealant, or something else and we will find out which.