Greater London · England
Glazing & conservatory sealant in North Greenwich, Greater London
Professional glazing silicone in and around North Greenwich, with every bit of old sealant taken out first and a 12-month guarantee.
- Water tracking down the inner face of the glass
- Black or yellowed silicone on glass joints
- Cracked silicone between glass panels
Glazing silicone in North Greenwich
Across North Greenwich, we reseal glazing joints in homes, offices and hotels. From conservatories to shower screens, it’s the same careful method, with a sealant chosen for the joint. We work on glass-to-frame joints, shower screens and glass balustrade bases, and people most often call us about drips on the inside of a conservatory window and sealant that was laid over old silicone and failed.
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, letting in draughts and water.
Your job is guaranteed for a year, as with all our work.
- Place
- North Greenwich (E14, SE8, SE10)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How the job changes by surface
Rooflights
We reseal the glazing joints on rooflights. Leaks from the roof itself need a roofer.
Shower screens
Black or peeling silicone on a screen lets water out. Cutting it out and resealing fixes it.
North Greenwich: your questions answered
I let a flat near Greenwich station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Is parking an issue for glazing silicone in North Greenwich?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
What does glazing silicone cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Will the old sealant be removed?
Yes, every time. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you.
Do you fit new glass or sealed units?
No. We renew the sealant. A glazier replaces glass and units.
How long does the job take?
Most jobs take a few hours for most jobs, including preparation and clearing up. We will confirm how long when we quote.
What do you need from me for a quote?
Let us know what needs doing and where, with pictures by email if possible. If we need more, we’ll ask.
What glazing silicone looks like in North Greenwich
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
As a London address, North Greenwich can be tricky for parking: let us know about parking bays, permits or a driveway. Schools such as Harbinger Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
North Greenwich is about 1 mile north-west of Greenwich, in Greater London. We provide glazing silicone to homeowners, landlords and businesses in North Greenwich. Our Greater London coverage runs to 764 places, North Greenwich among them.
Here we cover the E14, SE8 and SE10 postcode area for glazing silicone. If you need glazing silicone at a property on Creek Road, Wynan Road and Undine Road or a nearby road, our applicators can take on the job. Other places close to North Greenwich include Isle of Dogs (1 mile south-east), Millwall (1 mile west), Cubitt Town (1 mile north-east), Deptford (1 mile south-west) and Greenwich (1 mile south-east). Further out, we also cover London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles north-west) and Shoreditch (4 miles north-west).
Landmarks near North Greenwich
We work in homes and buildings around Laban Centre, Canary Wharf College 3 and St. Paul's. Other local landmarks include Mudchute Park and Farm (under half a mile north-east) and The Ferry House Public House (under half a mile south-east). For rail, the closest station is Greenwich station, roughly 0.8 miles south. Nearby you’ll also find Old Royal Naval College (0.7 miles south-east) and Greenwich Castle (1.1 miles south-east). For a walk, there’s Sue Godfrey Nature Park and Tower Hill.
Also near North Greenwich
What else we do in North Greenwich
Quotes for glazing silicone in North Greenwich
You’ll get a clear quote before any work starts. It’s based on:
- The amount of work
- Access and height
- How many areas need sealing
- Any mould that needs treating
Combining jobs into one visit usually makes better use of the time than several visits. You’ll get one clear quote for the whole job.
Helping us quote
What to tell us when you ask for a quote:
- The address or postcode of the job
- Pictures of the joints, sent by email
- The problem you’ve noticed
- Any previous sealing or DIY work
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or drop us an email.
How the visit works
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the job takes a few hours, depending on how many joints need doing in most cases. For a job in North Greenwich, 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.
- 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.
- We lay the new bead and tool it smooth.
- We check the finished joints and test with water where it’s safe.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Move anything stored near the joints
- Mention any leaks or damp you’ve noticed
Getting a quote
There’s no standard price list. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or send us an email.
Advice
When to call us in North Greenwich
Silicone will not bond to a dirty surface. Where the joint wasn’t cleaned and degreased, the bead can peel away early.
Keep an eye out for these signs:
- Black or yellowed silicone on glass joints
- Cracked silicone between glass panels
- Glazing silicone that has cracked or come away
- Water getting into a conservatory at the joints
Rented homes near Greenwich station change hands often, and glazing joints are worth checking at the end of a tenancy, before a small leak grows.
What to look for in a quote
- How the surfaces are prepared before sealing
- Whether the sealant suits the joint
- How the colour is chosen
- What guarantee comes with the work
When it isn’t the sealant
In fairness, some problems need a different trade:
- A frame that needs repairing or replacing
- A sagging or failing conservatory roof
- Failed flashing around a conservatory
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Rooflights
- Glass balustrade bases
- Conservatory frames
- Glass-to-glass joints
- Shower screens
- Glass-to-frame joints
Can I do it myself?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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.
Why act early in North Greenwich
Resealing can’t fix a failed unit or a cracked panel. We will tell you that rather than seal it anyway and point you to a glazier or roofer. 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 North Greenwich.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please ring 0345 464 0079 or send us an email.
Why choose Mr Mastic in North Greenwich
- Anti-fungal silicone where joints get wet
- Neat joints and a tidy finish
- Arbo and Everbuild products
- A 12-month guarantee on all work
Take a look at how sealant jobs are priced and our reviews.