Greater London · England
South Bank Glazing Silicone
Glazing silicone for conservatories, rooflights, glass panels and shower screens in South Bank, with a one-year guarantee on every job. Call for a quick quote.
- Leaks where conservatory glass meets the frame
- Leaking glazing joints on a rooflight
- Stained, discoloured glazing silicone
Glazing silicone for homes and businesses in South Bank
We renew glazing silicone on conservatories, rooflights and glass panels plus shower screens and the bases of glass balustrades. The old sealant comes out, the joint is cleaned and new silicone goes in. We work on rooflights, shower screens and glass-to-glass joints, and common reasons people get in touch are leaking glazing joints on a rooflight and glass-to-glass joints that have split.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.
We stand behind the work with a 12-month guarantee, so you’re covered after we have gone.
- Location
- South Bank (SE1, WC2E, WC2N)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Different surfaces, different methods
Shower screens
Mouldy or lifting sealant on a screen leaks. Cutting it out and resealing fixes it.
Glass balustrade bases
We reseal the joint where the glass meets the base channel. We don’t install or replace glass.
Why act early in South Bank
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 a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or drop us an email and we will talk you through it.
Why choose Mr Mastic in South Bank
- We are fully insured
- We never seal over old sealant
- Anti-fungal sanitary silicone in wet areas
- White, clear, grey or another colour, product permitting
Take a look at our cost guide and our reviews.
The process
When we arrive, we look over the joints with you first, so you know exactly what we are doing. We protect the surfaces around the joints before any work begins. Most jobs take a few hours, depending on how many joints need doing. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in South Bank. It helps if you can point us to a visitor permit or a bay close to the door.
- First we agree the joints to be done.
- Old sealant is removed from the glass and frame.
- We clean and prepare the joint.
- New glazing silicone goes in and is finished neatly.
- We inspect the work and test it where we can.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Where the joints are inside, avoid wetting them before we arrive
- Move anything stored near the joints
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you are ready, call 0345 464 0079 or email us.
Related advice
Towns and villages near South Bank
Also in South Bank
What we’re called out for in South Bank
Sealant laid over old sealant doesn’t last. Many failed joints we see have been topped up rather than cut out, and water gets between the layers.
Common reasons people contact us are:
- Leaking glazing joints on a rooflight
- Shower screens leaking along the wall or tray
- Cracked silicone between glass panels
- Glazing silicone that has cracked or come away
For an older house near a landmark such as St John's Church, the joint between an old wall and a newer frame is usually the first place rain gets in.
What to look for in a quote
- What happens if they find a problem under the old sealant
- What insurance they hold
- How the surfaces are prepared before sealing
- How long the guarantee is
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Keep harsh solvents off the silicone
- Keep air moving in the conservatory
- Clean glass with a mild cleaner and a soft cloth
- Avoid scraping close to the bead
Squeegee a shower screen after each shower and let the room air. It helps stop mould getting into the silicone.
Conservatory leaks rarely stay small. Water runs along frames and down walls so it’s best dealt with straight away.
Common questions in South Bank
Is parking a problem for a job in South Bank?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Is South Bank in your area for glazing silicone?
Yes, South Bank is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or drop us an email and let us know what needs doing.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Where are you based?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
What do you need from me for a quote?
Tell us what needs doing and where, plus pictures if you have them. If we need more, we’ll ask.
Is the work guaranteed?
Our 12-month guarantee applies on all our work.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Do you work for landlords and businesses?
Yes, regularly. We can quote for several properties at once.
Landlords, agents and businesses in South Bank
For anyone letting property in or around South Bank, several properties can be quoted together. Send us the addresses and the work at each.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
South Bank homes and the weather
In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking. With historic houses such as Benjamin Franklin House (about 0.4 miles north-west) nearby, there’s older building stock in the area around South Bank 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.
For site and facilities teams at buildings such as Oasis Academy Johanna, its window and door frames need their mastic kept sound, just like a home’s. For landlords with property near London Waterloo station, glazing joints are worth checking at the end of a tenancy, before a small leak grows.
South Bank is about 1 mile west of London, in Greater London. Jobs in South Bank get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. South Bank is one of 764 towns and villages in Greater London we cover for glazing silicone.
All of SE1, WC2E and WC2N is within our area for glazing silicone. Local streets include York Road, Spur Road and Lower Road, all of which we cover. Main roads around South Bank include the A301 and A302, which makes travel easy. Nearby, we also carry out glazing silicone in Waterloo (1 mile south-east), Adelphi (1 mile north-west), Charing Cross (1 mile north-west), Temple (1 mile north-east) and Aldwych (1 mile north). Within a short drive, we also cover Kensington (4 miles west), Walthamstow (7 miles north-east), Hampstead (4 miles north-west), Ruislip (14 miles west), Stockwell (3 miles south) and Orpington (13 miles south-east).
Around South Bank
We work in homes and buildings around Jubilee Gardens, The Hole In The Wall pub and The BFI Reuben Library and the streets around them. You will also find St Andrew's and St John's Church of England Primary School (under half a mile east) and London Nautical School (less than half a mile north-east). There’s a railway station in South Bank itself: London Waterloo station. Well-known places in the area include Florence Nightingale Museum (under half a mile south) and Royal Waterloo Hospital for Children and Women (less than half a mile north-east). For a walk, there’s Barnsbury Wood and St. James's Park Lake.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.