Greater London · England
Glazing & conservatory sealant in South Kensington, Greater London
Glazing silicone for conservatories, rooflights, glass panels and shower screens for householders, landlords and businesses in South Kensington. Fully insured, ARBOMaster approved and guaranteed for a year.
- Drips on the inside of a conservatory window
- Leaking glazing joints on a rooflight
- Black or yellowed silicone on glass joints
Glazing silicone for homes and businesses in South Kensington
Glass replacement is not something we do and a misted double-glazed unit needs a glazier. What we do is the silicone around the glass, which is where many leaks start. If you have drips on the inside of a conservatory window and split or lifting silicone on glass, we can help.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in, in South Kensington as anywhere.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Location
- South Kensington (SW3, SW7, SW10)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Questions from South Kensington
Is parking an issue for glazing silicone in South Kensington?
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.
Do you cover South Kensington for glazing silicone?
Yes. Our work covers London and the South East, and South Kensington is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Is a special sealant needed for glass?
We use a neutral-cure glazing silicone suited to glass and the frame. In bathrooms, we use anti-fungal silicone.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The product needed can limit the range.
How long will you be here?
That depends on how much there is to do, but as a guide it takes a few hours, depending on how many joints need doing. We will give you a better idea when we quote.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
How long should I leave it?
It depends on the product and the temperature. We tell you how long to leave it before we go.
What happens on the day
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes anything from an hour or two to most of a day, depending on the size of the job. For a job in South Kensington, 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.
- We remove the old sealant carefully.
- The joint is cleaned and degreased.
- 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 any previous sealing or DIY attempts
- On commercial sites, let us know about site rules
- Let us know if you’ve seen damp or leaks
Getting a quote
Need a quote? Please phone 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- A sagging or failing conservatory roof
- Failed flashing around a conservatory
- A frame that needs repairing or replacing
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think before booking.
What we seal
- Glass balustrade bases
- Glass-to-glass joints
- Shower screens
- Rooflights
- Conservatory frames
- Glass-to-frame joints
Why deal with it now?
Dealing with a leaking shower screen early protects the floor and ceiling. A small leak can reach the floor below before it shows. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in South Kensington, the repair is bigger than a sealant job.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Why choose Mr Mastic in South Kensington
- Colour agreed with you before we start
- A 12-month guarantee on all work
- White, clear, grey or coloured to suit, where the product allows
- Full insurance on every job
Read what affects the cost or customer reviews.
Frames and glazing around South Kensington
Historic houses like Carlyle's House (about 0.6 miles south-east) are a reminder that the area around South Kensington has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Our Lady of Victories RC Primary School, larger buildings have plenty of frames, and the mastic around each one ages. South Kensington is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. Letting a property close to West Brompton station? Then a shower screen or conservatory joint that leaks is easier to reseal while the property is empty.
South Kensington is about 1 mile south-east of Kensington, in Greater London. Across the SW3 area, we cover glazing silicone for homes and businesses. South Kensington is one of 764 places in Greater London where we work.
We cover every part of the SW3, SW7 and SW10 postcode area for glazing silicone. Streets in the area include King's Road, Fulham Road and Museum Lane. South Kensington is on the A3217, which makes it straightforward to reach. We also cover Little Chelsea (1 mile south), Chelsea (1 mile east), Brompton (1 mile north-east), World's End (1 mile south) and Earl's Court (1 mile west). We also work in nearby towns such as London (4 miles east), St Pancras (4 miles north-east), Shoreditch (5 miles north-east), Walthamstow (9 miles north-east), Hoxton (5 miles north-east) and Whitechapel (5 miles east).
What’s near South Kensington
Typical jobs here are in homes near London School of Dramatic Art, Burton’s Court and Anglesea Arms. Also close by are Natural History Museum Library and Archives (less than half a mile north) and Collingham College (0.5 miles west). The closest station to South Kensington is West Brompton station, about 0.8 miles west of the centre. Other landmarks nearby include Victoria and Albert Museum Spiral (under half a mile north) and Baynard's Castle (3.6 miles north-east). Green spaces nearby include Serpentine and Campden Hill.
Quotes for glazing silicone in South Kensington
We quote each job individually. This is what makes a difference:
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- Any working-time requirements on site
- Access and height
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
When you call or email, these details help:
- Any previous sealing or DIY work
- Roughly how big the job is
- The address or postcode of the job
- Whether it’s a home or a business
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, phone 0345 464 0079 or email us.
Also near South Kensington
Also in South Kensington
DIY sealant or a professional job?
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. All the old material has to come out first.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Work for landlords, hotels and businesses
Letting agents and landlords in South Kensington can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Run a squeegee over the glass when you’re done
- Use a gentle glass cleaner and a soft cloth
- Don’t leave a drip for the next storm
- Keep air moving in the conservatory
Avoid scraping near the new silicone when you clean. A soft cloth or sponge is best.
Drips or damp near a glazing joint shouldn’t be ignored. The cause may be sealant or another part and we will find out which.