Greater London · England
Window Mastic in Furzedown
Window mastic across Furzedown and nearby, with old sealant always removed completely and a 12-month guarantee.
- Draughty joints inside around the window
- White mastic on grey or black frames
- Draughts coming in around windows and doors
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
If you manage several properties in or around Furzedown, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
Window mastic in Furzedown, done properly
Most frames have an outside joint and an inside one. The external joint is the weather seal; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. If you are dealing with damp patches on the reveal after heavy rain and gaps between the frame and the inside reveal, we can put it right.
London has a lot of flats and conversions, where windows are often on upper floors. In a converted house or block, the lease generally says who is responsible for the windows, so it’s worth checking before booking.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Furzedown (SW16, SW17, CR4)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Furzedown
Other services in Furzedown
Do you need window mastic in Furzedown?
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
If you can see any of these, it’s time to have the joints looked at:
- Leaking joints at the ends of sills
- White mastic on grey or black frames
- Water coming in at the bottom corners of a door
- Mastic that has split away from the wall
If you let a flat or house near Tooting station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Comparing quotes
- Are they insured?
- What the quote includes, VAT included or not
- The length of the guarantee
- Which colour the sealant will be
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Keep paint and stain on wooden frames in good order
- Clean frames with a soft cloth and soapy water
- Avoid harsh chemicals near the mastic
- Clear any debris from frame drain holes
Try not to touch the new joint while it cures, for as long as we advise. Do not point a pressure washer at the joints.
A small gap around a frame only grows. As the old mastic shrinks further, more air gets through, and heat escapes around the frame. Resealing closes it.
Windows and doors in Furzedown
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. With historic houses such as Kingswood House (about 2.9 miles east) nearby, there’s older building stock in the area around Furzedown as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
As a London address, Furzedown can be tricky for parking: let us know about parking bays, permits or a driveway. For site and facilities teams at buildings such as Graveney School, the mastic around its windows and doors needs looking after like any other building’s.
Furzedown is about 3 miles east of Wimbledon, in Greater London. For window mastic in and around Furzedown, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We are based in Crawley and cover Greater London, Furzedown included. Our Greater London coverage runs to 764 places, and Furzedown is one of them. For nearby work, see our London page, about 6 miles away.
Jobs for window mastic in SW16, SW17 and CR4 works the same way as everywhere else we cover. Window mastic is available to properties on Deal Road, Links Road and Seely Road and the roads around them. Furzedown sits on or near the A216, which makes travel easy. Other places close to Furzedown include Streatham Park (1 mile north-east), Tooting (1 mile west), Tooting Bec (1 mile west), Streatham (1 mile east) and Colliers Wood (1 mile south-west). We also work in nearby towns such as London (6 miles north-east), City of Westminster (6 miles north), Marylebone (6 miles north), Kensington (6 miles north-west), St Pancras (7 miles north) and Shoreditch (8 miles north-east).
What’s near Furzedown
Typical jobs here are in homes near The Holland Tringham pub, Figge's Marsh and Furzedown Secondary School. The closest station to Furzedown is Tooting station, roughly 0.6 miles south-west. Well-known places in the area include St Benedict's Hospital (under half a mile west) and London Sewing Machine Museum (0.9 miles north-west). Green spaces nearby include Battersea Park Lake and Knight's Hill.
Different surfaces, different methods
Window sills
Masonry sills can have joints where water gets in, including the one between the sill and the frame above. Those are sealed with a product suited to stone or concrete.
Composite doors
Composite doors are normally hung in an uPVC-type frame, and the joint around it is sealed like a window. We match the colour to the frame.
How it works
When we arrive, we look over the joints with you first, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. The work generally takes a few hours for a few frames, or a day or more for a whole house. In Furzedown, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- 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.
- Finally we tidy up and check each joint.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we’re working on
Getting 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. When it suits you, ring 0345 464 0079 or email us.
Related advice
Common questions in Furzedown
Can you do window mastic in Furzedown?
Yes, Furzedown is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job.
Do you work for landlords with property near Tooting station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you reach windows above the ground floor?
Yes, if safe access is possible. For high or awkward windows, we’ll tell you what access is needed.
How do I get a quote for window mastic in Furzedown?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or drop us an email and let us know what needs doing and where.
Which products do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Can I do it myself?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What sealant work can’t fix
To be straight with you, some problems need a different trade:
- A frame that has rotted at the joint
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Damp problems in the wall away from the window
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Surfaces we seal
- Timber windows & doors
- Window sills
- Aluminium frames
- Patio & French doors
- uPVC windows
- Composite doors