Greater London · England
Glazing & conservatory sealant in Kennington, Greater London
Glazing silicone for conservatories, rooflights, glass panels and shower screens for homeowners, landlords and businesses in Kennington. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Failed sealant around rooflight glass
- Leaks from the base of a shower screen
- Leaks where conservatory glass meets the frame
How we handle glazing silicone in Kennington
Glass replacement isn’t something we do and a misted double-glazed unit needs a glazier. Our work is the sealant joints, which is where many leaks start. Common call-outs are for mouldy sealant around glass panels and rooflight joints letting water in, across glass-to-frame joints, conservatory frames and glass balustrade bases.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.
You get a 12-month guarantee, the same in Kennington as everywhere else we work.
- Where
- Kennington (SW8, SW1P, SE11)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Kennington
Is parking a problem for a job in Kennington?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Can you help a landlord with a rental near Vauxhall station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or email us with the details for a clear quote.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Do you have insurance?
Yes. Full insurance covers our work.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
What sealant do you use on glazing?
Glass needs a sealant made for glazing. We use neutral-cure glazing silicone with anti-fungal products in bathrooms.
Why not top up the existing silicone?
It does not last. The new bead can’t grip the old one so we take it all out and start clean.
What guarantee do I get?
All our work has a 12-month guarantee.
Leave it or put it right?
A leaking joint won’t fix itself. Water can damage frames, walls, flooring and furniture so early action saves a bigger repair. 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.
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 explain what it covers.
Why choose Mr Mastic in Kennington
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- Sealant colour chosen to suit
- Fully insured
See what affects the cost and our reviews.
What we are called out for in Kennington
UV light ages silicone and roof joints get the most sun. It goes brittle, cracks and stops sticking on the glass.
If you can see any of these, it’s time to have the joints looked at:
- Silicone pulling away from the glass
- Stained, discoloured glazing silicone
- Water getting into a conservatory at the joints
- New silicone smeared over old sealant
If you live in an older home near Calvary Church of God in Christ, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before booking anyone
- Which colour the sealant will be
- What the cure time is
- What preparation is included
- Are they insured?
Towns and villages near Kennington
Also in Kennington
Aftercare tips
After the cure time, these simple habits help:
- Stick to mild cleaners on glass
- Do not use a blade near the sealant
- Check the gutters above the glazing for debris
- Wipe the screen down after showering
Use mild cleaners on and around the silicone. Harsh solvents may damage the bead.
If silicone on glass has cracked, water is already getting in. Resealing now is a small job compared with fixing water damage later.
Landlords, agents and businesses in Kennington
We work for landlords and agents as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
What affects the cost of glazing silicone
We do not publish a price list, because no two jobs are the same. What we look at:
- Mould in or behind the old joints
- Access and height
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What we need to know
To help us quote quickly, let us know:
- A few photos by email, if you can
- The address or postcode of the job
- If it’s domestic, commercial or a hotel
- Access, such as stairs, a lift or height
To get a quote, call 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will give you a clear price before any work starts.
When something else is needed
In fairness, some problems need a different trade:
- A frame that needs repairing or replacing
- Structural problems with a conservatory roof
- Failed flashing around a conservatory
If you’re not sure, just phone 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Glass-to-glass joints
- Shower screens
- Rooflights
- Glass balustrade bases
- Glass-to-frame joints
- Conservatory frames
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. 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 Kennington. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, we check where the water gets in.
- The failed silicone is cut out without marking the glass or frame.
- 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.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
- Clear items away from the joints we are working on
Getting a quote
For glazing silicone in Kennington, ring 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Advice
Windows and doors in Kennington
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Buckingham Palace (about 1.7 miles north-west) are a reminder that the area around Kennington 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 Vauxhall station change hands often, and leaking glazing joints, shower screens or conservatory seals are worth sorting between tenancies. As a London address, Kennington can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Kennington is about 2 miles south-west of London, in Greater London. Every kind of property in Kennington can book us for glazing silicone, old or new, large or small. The work is guaranteed for a year. Across Greater London, we cover 764 places, Kennington among them.
Work in SW8, SW1P and SE11 works the same way as everywhere else we cover. If you need glazing silicone at a property on Kay Road, Lett Road and Rita Road or a nearby road, our applicators can take on the job. Main roads around Kennington include the A203 and A3204. Neighbouring places we cover for glazing silicone include Oval (1 mile north), South Lambeth (1 mile south-west), Little Portugal (1 mile south), North Brixton (1 mile south-east) and Vauxhall (1 mile north). Further out, we also cover City of Westminster (3 miles north-west), Marylebone (3 miles north-west), Kensington (4 miles west), St Pancras (3 miles north), Shoreditch (4 miles north-east) and Walthamstow (8 miles north-east).
Near you in Kennington
In Kennington, that means homes and buildings near St Peter's School, Archbishop Tenison's Church of England School and Lambeth Palace Library, among other places. Also close by are Crown and Thistle pub (less than half a mile south-west) and Vauxhall Park (less than half a mile north-west). There’s a railway station in Kennington itself: Vauxhall station. Other landmarks nearby include Baynard's Castle (2.2 miles north) and Type Museum (0.5 miles south). Not far away are Bellenden Road Nature Garden and Ludgate Hill.