Greater London · England
Upminster Glazing Silicone
Specialist glazing silicone for Upminster: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Leaks from the base of a shower screen
- Glazing silicone that has cracked or come away
- Failed sealant around rooflight glass
Surface by surface
Rooflights
Rooflights get the full force of the weather. Its sealant ages faster than vertical joints.
Shower screens
Frameless screens rely on silicone at the base and wall. We renew it without marking the glass.
Glazing silicone in Upminster
Our work covers conservatory joints, rooflights and glass panels, as well as frameless shower screens and glass balustrade bases. Each joint is cut out, cleaned and resealed. We work on glass balustrade bases, glass-to-frame joints and shower screens, and the jobs we see most are leaks from the base of a shower screen and conservatory leaks at frame and glazing joints.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Upminster.
Every job is covered by a one-year guarantee, wherever you are in Greater London.
- Location
- Upminster (RM14, RM11)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Upminster
Can you do glazing silicone in Upminster?
Yes, Upminster is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Is parking a problem for a job in Upminster?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used.
Do you have insurance?
Yes. We are fully insured, and we can confirm the details when we quote.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Is a special sealant needed for glass?
A neutral-cure glazing silicone that suits the glass and frame. Shower screens get anti-fungal silicone.
Can a conservatory leak be sealed?
Often, if the leak is at a sealant joint. We find where the water gets in first before any sealing.
How do I get a quote for glazing silicone in Upminster?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Work for landlords, hotels and businesses
If you manage several properties in or around Upminster, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Frames and glazing around Upminster
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Hare Hall (about 2.6 miles north-west) are a reminder that the area around Upminster 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.
Rented homes near Upminster station change hands often, and a shower screen or conservatory joint that leaks is easier to reseal while the property is empty. Managing a site like Upminster Junior School? Then its window and door frames need their mastic kept sound, just like a home’s.
Upminster is about 2 miles east of Hornchurch, in Greater London. Every kind of property in Upminster is covered for glazing silicone, old or new, large or small. The work is guaranteed for a year. Our Greater London coverage runs to 764 places, Upminster among them. Our London page covers work nearby (16 miles or so).
Postcode districts we cover here for glazing silicone: RM14 and RM11. If you need glazing silicone at a property on Station Road, Latham Place and Deyncourt Gardens or a nearby road, our applicators can take on the job. Other places close to Upminster include Upminster Bridge (1 mile west), Cranham (1 mile east), Emerson Park (1 mile north-west), Hornchurch (2 miles west) and Puddle Dock (2 miles east). We also work in nearby towns such as Shoreditch (14 miles west), Walthamstow (12 miles west), Hoxton (15 miles west), Whitechapel (14 miles west), Orpington (14 miles south-west) and Highbury (15 miles west).
Landmarks near Upminster
Around Upminster, our work takes us to homes and buildings near Eastbrook School, St. Andrew's Park and The Crumpled Horn pub and the streets around them. There’s a railway station in Upminster itself: Upminster station. Other landmarks nearby include Upminster Tithe Barn Museum of Nostalgia (0.5 miles north) and The Mercury Mall (3.2 miles north-west). The countryside around Upminster includes Cranham Marsh.
Towns and villages near Upminster
More services for Upminster
Leave it or put it right?
A quick bead over the old sealant might stop a drip for a while, but new silicone will not bond to old and water soon finds its way back. A proper reseal is the lasting answer. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Upminster, 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, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why choose Mr Mastic in Upminster
- Fully insured
- A sealant colour to suit the surroundings
- White, clear, grey or another colour, product permitting
- 180+ five-star Google reviews
See what affects the cost and customer reviews.
When to call us in Upminster
Dirt and grease stop silicone sticking. Where the joint wasn’t cleaned and degreased the sealant may lift within a few years.
Any of these means the joints need attention:
- Black or yellowed silicone on glass joints
- Water getting into a conservatory at the joints
- Rooflight joints letting water in
- Split or lifting silicone on glass
As a London address, Upminster can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- Whether they’re fully insured
- Who turns up on the day
- Is the old sealant removed completely?
- How long the guarantee is
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
What we can’t put right
Sealant is not the answer to every problem, and we’ll tell you before work begins. It won’t solve:
- Structural problems with a conservatory roof
- Misting between the panes of a double-glazed unit (a failed unit for a glazier)
- Cracked or broken glass
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Where we work in Upminster
- Glass-to-frame joints
- Shower screens
- Rooflights
- Glass-to-glass joints
- Conservatory frames
- Glass balustrade bases
The process
Every visit runs the same way: we look at the joints together, protect the area around them, carry out the job and clear up. It usually takes anything from an hour or two to most of a day, depending on the size of the job. For a job in Upminster, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- We trace the leak and confirm it’s a sealant joint.
- The failed silicone is cut out without marking the glass or frame.
- The joint is cleaned and degreased.
- A neutral-cure glazing silicone is applied and tooled.
- We check the finished joints and test with water where it’s safe.
Before we arrive
- Let us know about earlier repairs to the joints
- Clear the area around the work
- Tell us if parking is tricky
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.