Greater London · England
Window & door mastic in Foots Cray, Greater London
Window mastic in Foots Cray from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- White mastic on grey or black frames
- Mastic that has split away from the wall
- Water coming in at the bottom corners of a door
Foots Cray homes and the weather
With historic houses such as Danson House (about 2.8 miles north) nearby, there’s older building stock in the area around Foots Cray as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to Parish Church of All Saints include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Foots Cray is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. For site and facilities teams at buildings such as Orchard Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Foots Cray is about 1 mile south-east of Sidcup, in Greater London. Every kind of property in Foots Cray can book us for window mastic, old or new, large or small. The work is guaranteed for a year. Across Greater London, we cover 764 places, and Foots Cray is one of them. Our London page covers work nearby, about 11 miles away.
Here we cover the DA14 and BR5 postcode area for window mastic. Whether your property is on Cray Road, Evry Road and The Avenue or a nearby road, our applicators can take on the job. Foots Cray is on the A223, which makes it straightforward to reach. Neighbouring places we cover for window mastic include Ruxley (1 mile east), Albany Park (1 mile north-west), Upper Ruxley (1 mile east), Sidcup (1 mile north-west) and North Cray (2 miles north-east). We also work in nearby towns such as London (11 miles north-west), City of Westminster (13 miles north-west), Marylebone (13 miles north-west), Kensington (15 miles north-west), St Pancras (13 miles north-west) and Shoreditch (11 miles north-west).
Local landmarks in Foots Cray
We work in homes and buildings around Foots Cray Meadows, Kemnal Technology College and Walsingham School, among other places. Foots Cray’s nearest station is Sidcup station, roughly 1.4 miles north. Nearby you’ll also find Metropolitan Police Museum (1.3 miles north-west) and Queen Mary's Hospital (0.6 miles west). Not far away are Summer Hill and The Warren.
Window mastic for homes and businesses in Foots Cray
If you can feel air around a shut window, the gap is often at the frame. A new joint stops the air getting through and quietens the whistle on windy days. If the draught is through the window seals instead, we will tell you. We work on aluminium frames, uPVC windows and composite doors, and people most often call us about draughty joints inside around the window and whistling draughts around closed windows.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Foots Cray.
All our work comes with our one-year guarantee.
- Location
- Foots Cray (DA14, BR5)
- Wider area
- Greater London
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Look round the frames every year or so
- Wash the frames with mild soapy water
- Do not paint over the silicone
- Don’t use solvent cleaners on the joint
Clean the frames with mild soapy water, and keep solvents and harsh chemicals off the joint.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
What happens on the day
We keep the work tidy and contained to the joints we’re treating, so you can carry on as normal. Expect the work to take anything from an hour or two to a full day, depending on how many frames there are, and we explain the cure time before we leave. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Foots Cray. It helps if you can point us to a visitor permit or a bay close to the door.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Clear the area around the work
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
Get a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we will take it from there.
Advice
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Different surfaces, different methods
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the bottom joint sees the most water. Each is cleaned, backed where deep and resealed.
Window sills
Sills catch the water running down the glass, so the sill ends and the joint under the frame are vital. Each is cleaned out and resealed.
Common questions in Foots Cray
Can you do window mastic in Foots Cray?
Yes, Foots Cray 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.
Can parking be tricky for a visit in Foots Cray?
Parking in Foots Cray, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
Do you seal inside as well as outside?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We do one or both.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once.
Can I do it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Is there any odour?
Some sealants have a smell while they cure. Opening a window helps.
Quotes for window mastic in Foots Cray
Some jobs are bigger than they look, and some smaller. The main factors:
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
- The number of rooms or windows
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
- The rough size of the job
- Where the job is, and your postcode
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’re ready, call 0345 464 0079 or email us.
Landlords, agents and businesses in Foots Cray
Landlords and letting agents in Foots Cray can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
We also work for property managers and facilities teams in Foots Cray and across Greater London. We can quote a run of properties together, and we’re fully insured.
Nearby places to Foots Cray
Also in Foots Cray
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- A frame that has rotted at the joint
- Condensation trapped between the panes
- A door that needs adjusting, rehanging or new seals
If you’re not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer before you book.
What we seal
- Patio & French doors
- Composite doors
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Window sills