Greater London · England
Glazing & conservatory sealant in St Mary Cray, Greater London
Glazing silicone in St Mary Cray from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaks where conservatory glass meets the frame
- Split or lifting silicone on glass
- New silicone smeared over old sealant
How we handle glazing silicone in St Mary Cray
A frameless shower screen depends on its silicone. The joint down the wall and the one along the tray are common leak points and both get fresh anti-fungal silicone. We work on glass-to-frame joints, glass-to-glass joints and rooflights, and common reasons people get in touch are water escaping where a screen meets the wall and glazing silicone that has cracked or come away.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease normally says who is responsible for the windows, so it’s worth checking before booking.
All our work is covered by a 12-month guarantee.
- Place
- St Mary Cray (BR5, BR6, BR7)
- Region
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How the job changes by surface
Glass-to-glass joints
Silicone joins glass panels in many frameless designs. We renew it with a clear or matching glazing silicone.
Glass balustrade bases
The base of a glass balustrade is usually sealed. When it fails, water can sit in the channel.
Landlords, agents and businesses in St Mary Cray
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
We also work for property managers and facilities teams in St Mary Cray and across Greater London. We can quote a run of properties together, and we are fully insured.
Glazing silicone in St Mary Cray: local notes
With historic houses such as Bromley Palace (about 3.8 miles west) nearby, there’s older building stock in the area around St Mary Cray as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to St Mary Cray station? Then a shower screen or conservatory joint that leaks is easier to reseal while the property is empty. For an older house near a landmark such as Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
St Mary Cray is about 11 miles south-east of London, in Greater London. Whether you are in the middle of St Mary Cray or further out, we cover glazing silicone for every kind of property. Our area takes in 764 places across Greater London. There’s also a page for London, about 11 miles away.
We cover every part of BR5, BR6 and BR7 for glazing silicone. Whether your property is on New Road, Kent Road and Park Road or anywhere close by, our applicators can take on the job. Being close to the A224, St Mary Cray is easy for our applicators to reach for glazing silicone. We also cover the places around St Mary Cray: Poverest (1 mile south-west), St Paul's Cray (1 mile north), Orpington (1 mile south), Derry Downs (1 mile south-east) and Kevington (1 mile east). We also work in nearby towns such as London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles north-west), St Pancras (13 miles north-west) and Shoreditch (12 miles north-west).
Near you in St Mary Cray
Around St Mary Cray, our work takes us to homes and buildings near Harris Academy Orpington, The Blue Anchor Public House and Walsingham School. St Mary Cray has its own railway station: St Mary Cray station. A little further out are London Borough of Bromley Museum (0.9 miles south) and Lullingstone Castle (4.5 miles south-east). For a walk, there’s Summer Hill and The Warren.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Look over the glazing joints once a year
- Check the gutters above the glazing for debris
- Keep scrapers and blades away from the silicone
- Act on drips or damp patches early
Keep conservatory gutters clear, so water drains away from the joints. Blocked gutters can push water where it shouldn’t go.
Drips or damp near a glazing joint shouldn’t be ignored. It may be sealant, or something else, and we’ll tell you which.
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
St Mary Cray questions
Can parking be tricky for a visit in St Mary Cray?
Parking in St Mary Cray, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Is St Mary Cray in your area for glazing silicone?
Yes, St Mary Cray 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’ll give you a clear price.
Is it possible to redo the silicone on a shower screen?
Yes. We cut out the old silicone and reseal the glass-to-wall and glass-to-tray joints.
What guarantee do I get?
Our one-year guarantee covers every job.
How long does glazing silicone take?
That depends on how much there is to do, but most jobs take a few hours for most jobs. We’ll give you a better idea when we quote.
Where do you work from?
Mr Mastic is based in Crawley. We cover St Mary Cray and the rest of Greater London, along with the rest of our area.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Is a special sealant needed for glass?
Glass needs a sealant made for glazing. Ours is a neutral-cure glazing silicone with anti-fungal products in bathrooms.
Leave it or put it right?
Fixing a leaking screen early protects what’s underneath. A small leak can reach the floor below before it shows. Converted houses in London often have a bathroom above someone else’s living room, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we will go through it with you.
Why us?
- Sanitary silicone with an anti-fungal additive in wet areas
- Domestic, commercial and hotel work
- Fully insured
- 180+ five-star Google reviews
Read our cost guide or customer reviews.
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. In St Mary Cray, 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 check where the water gets in.
- We remove the old sealant carefully.
- We clean the glass and frame so the new silicone bonds.
- A neutral-cure glazing silicone is applied and tooled.
- Each joint is checked and, where possible, water-tested.
Before we arrive
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
- Tell us about any water getting in
Getting a quote
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, phone 0345 464 0079 or drop us an email.
Advice
Places near St Mary Cray
Also in St Mary Cray
Signs you need glazing silicone in St Mary Cray
Shower screen silicone gets wet every day. Mould gets into it and the edges begin to peel.
People usually contact us after spotting one of these:
- Sealant that was laid over old silicone and failed
- Leaks from the base of a shower screen
- Drips on the inside of a conservatory window
- Water getting into a conservatory at the joints
Managing a site like Poverest Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- What preparation is included
- How much experience the applicator has
- When the joint can take water or movement
- Whether VAT is included