Greater London · England
Window Mastic in Wimbledon
We cover Wimbledon for mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Gaps left after new windows were fitted
- Gaps where the sill meets the wall
- Draughts coming in around windows and doors
Window mastic in Wimbledon
Homes in Wimbledon have every kind of window: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. Typical jobs include a bead that doesn’t match the frame and untidy mastic left by window fitters, across window sills, composite doors and aluminium frames.
London has a lot of flats and conversions, where windows are often on upper floors. Who looks after the outside of the frames can depend on the lease, so check that first, and access in Wimbledon is something to talk through when you book.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Place
- Wimbledon (SW19, SW20, SW17, SW18)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What we’re called out for in Wimbledon
Water runs down the glass onto the sill, so the sill ends and the joint below the frame are common leak points. When that sealant fails, water gets into the wall or under the frame.
Common reasons people contact us are:
- Hard, cracked sealant around windows
- Draughty joints inside around the window
- Water coming in at the bottom corners of a door
- Sealant in the wrong colour for the frame
If you let a flat or house near Wimbledon station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What your quote should include
- Are they insured?
- How the colour is chosen
- Whether VAT is included
- Whether the sealant suits the joint
What happens on the day
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. Most jobs take a morning for a couple of windows and a door. In Wimbledon, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Preparing for the visit
- On commercial sites, let us know about site rules
- Let us know about earlier repairs to the joints
- Tell us about any water getting in
How to get 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.
Read more
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Make sure the drainage slots aren’t blocked
- Look round the frames every year or so
- Keep timber frames painted
- Ventilate rooms so frames do not stay wet inside
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Keep paint off the silicone itself.
Water gets in quietly when mastic fails. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured.
If you manage several properties in or around Wimbledon, several properties can be quoted together. Just tell us the addresses and what each one needs.
Frames and glazing around Wimbledon
In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking. Historic houses like Southside House (about 1.1 miles south-west) are a reminder that the area around Wimbledon has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
As a London address, Wimbledon can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Schools such as Wimbledon High School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Wimbledon is about 7 miles south of City of Westminster, in Greater London. Homes, rented property, offices and hotels in Wimbledon can book us for window mastic. Every job comes with our one-year guarantee. Wimbledon is one of 764 towns and villages in Greater London where we work for window mastic. We also work in London, around 7 miles away.
Postcode districts we cover here for window mastic: SW19, SW20, SW17 and SW18. Whether your property is on High Street Mews, High Street and Church Road or anywhere close by, we can help. Main roads around Wimbledon include the A218 and B235. Other places close to Wimbledon include Crooked Billet (1 mile west), Wimbledon Park (1 mile north), Wimbledon Chase (1 mile south), Copse Hill (1 mile south-west) and Merton Park (1 mile south-east). Within a short drive, we also cover London (7 miles north-east), City of Westminster (7 miles north), Marylebone (7 miles north-east), Kensington (5 miles north), St Pancras (8 miles north-east) and Shoreditch (9 miles north-east).
Local landmarks in Wimbledon
Typical jobs here are in homes near Willington School, Dog & Fox pub and Cannizaro Park and the streets around them. There’s a railway station in Wimbledon itself: Wimbledon station. Nearby you’ll also find Atkinson Morley Hospital (1.2 miles west) and Wimbledon Museum (under half a mile west). Not far away are Battersea Park Lake and Merton Park Green Walks.
FAQs for Wimbledon
Can you do window mastic in Wimbledon?
Yes, Wimbledon is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Is parking a problem for a job in Wimbledon?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Will new mastic stop draughts?
In many cases. Air often gets in between the frame and the wall, and resealing inside and out closes it.
Can you quote for more than one area?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
Which products do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll explain our choice.
Is the work guaranteed?
Yes, for 12 months. A yearly look at the joints helps them last.
How much does window mastic cost in Wimbledon?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint.
Can I do it myself?
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 is fine. We remove it and do the joint properly, so just mention it when you contact us.
Leave it or put it right?
The work is quick compared with the damage it prevents: the visit takes anything from an hour or two to a full day, depending on how many frames there are. Wait for damp to appear and there may be plaster and decorating to sort out too. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler.
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before we start.
Why book with us
- Experience in homes, commercial sites and hotels
- Full insurance on every job
- A choice of colours where the product allows
- Over 20 years’ experience
Take a look at what affects the cost and customer reviews.
When it isn’t the sealant
It helps to know what we can’t do too:
- Soft or decayed wood in the frame
- Draughts through the window seals rather than the frame
- Penetrating damp from a failed cavity tray or render
If in doubt, call 0345 464 0079 or drop us an email and we will say what we think.
Where we work in Wimbledon
- Aluminium frames
- Window sills
- uPVC windows
- Composite doors
- Patio & French doors
- Timber windows & doors