Greater London · England
Window Mastic in Upper Ruxley
Our applicators work in Upper Ruxley on mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly.
- Cracked internal joints between frame and plaster
- Draughts coming in around windows and doors
- Gaps where the sill meets the wall
Window mastic in Upper Ruxley, done properly
From a single sill to a whole house of windows, you will get a clear quote before we start. Just phone 0345 464 0079 or drop us an email and tell us how many frames there are and how they’re reached for window mastic in Upper Ruxley. We work on timber windows & doors, composite doors and window sills, and common reasons people get in touch are black, perished sealant on frames and cracked internal joints between frame and plaster.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out, in Upper Ruxley as anywhere.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Where
- Upper Ruxley (DA14)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Upper Ruxley
The quote reflects the job in front of us. We look at:
- Mould in or behind the old joints
- The number and length of the joints
- Any working-time requirements on site
- How many rooms, windows or areas are involved
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, call 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Asking for a quote
What to tell us when you ask for a quote:
- Where the property is
- Roughly how big the job is
- Whether it’s a home or a business
- Whether it has been sealed before
If you’re in Upper Ruxley and need window mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Places near Upper Ruxley
More services for Upper Ruxley
When to call us in Upper Ruxley
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.
These are the problems we are asked about most:
- Rain getting in at the frame or under the sill
- White mastic on grey or black frames
- Gaps left after new windows were fitted
- Mastic that has split away from the wall
Letting a property close to Swanley station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
What to look for in a quote
- How hidden problems are handled
- Whether you can choose the colour
- Is the old sealant removed completely?
- How the joint is cleaned and prepared
Landlord and commercial work in Upper Ruxley
We also work for property managers and facilities teams. Several sites can go on one quote, and we’re fully insured for the work.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a handful of frames, longer for a whole house and we leave things clean and tidy. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Upper Ruxley. A visitor permit or a nearby bay makes the visit run more smoothly.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
- Clear the area around the work
Getting a quote
Every job is quoted individually, so the first step is telling us about yours. Simply ring 0345 464 0079 or drop us an email and describe the job, and pictures are welcome.
Related advice
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Windows and doors in Upper Ruxley
With historic houses such as Hall Place and Gardens (about 2.7 miles north) nearby, there’s older building stock in the area around Upper Ruxley as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Hope Community School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. As a London address, Upper Ruxley can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Upper Ruxley is about 2 miles south-east of Sidcup, in Greater London. We carry out window mastic for homeowners, landlords and businesses in Upper Ruxley and nearby. Our Greater London coverage runs to 764 places, and Upper Ruxley is one of them. London is on our list too, about 12 miles from Upper Ruxley.
Work in DA14 works the same way as everywhere else we cover. You will find streets such as Maidstone Road and Old Maidstone Road, and we cover them all. Other places close to Upper Ruxley include Ruxley (1 mile north-west), Hockenden (1 mile south-east), Stonehill Green (1 mile east), Foots Cray (1 mile west) and North Cray (1 mile north). Larger places within reach include London (12 miles north-west), City of Westminster (15 miles north-west), Marylebone (14 miles north-west), St Pancras (14 miles north-west), Shoreditch (12 miles north-west) and Walthamstow (14 miles north-west).
Landmarks near Upper Ruxley
Around Upper Ruxley, our work takes us to homes and buildings near Kemnal Technology College and Foots Cray Meadows. Upper Ruxley’s nearest station is Swanley station, roughly 1.7 miles south-east of the centre. A little further out are Queen Mary's Hospital (1.8 miles west) and Eynsford Castle (4.2 miles south-east). Green spaces nearby include The Warren and Summer Hill.
Your questions about window mastic in Upper Ruxley
Is Upper Ruxley in your area for window mastic?
Yes. We work across London and the South East, and Upper Ruxley is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we’ll give you a clear quote.
I let a flat near Swanley station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners. You can call 0345 464 0079 or send us an email with the details for a clear quote.
How much does window mastic cost in Upper Ruxley?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or email us with a short description of the job.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
How many windows can you do in a day?
It depends on access, the old mastic and the size of the frames. You’ll know the timing when we quote.
Will you leave a mess?
Not at all. The area is protected while we work and cleaned up afterwards.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Where do you work from?
Mr Mastic is based in Crawley. We cover Upper Ruxley and the rest of Greater London.
Looking after it afterwards
So the new joints stay in good condition:
- Keep solvents and bleach off the sealant
- Paint up to the joint, not over it
- Wash the frames with mild soapy water
- Repaint timber before it’s bare
Try not to touch the new joint while it cures, following the cure time we give you. Keep jet washers away from the frames.
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.
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Damp coming through the wall itself rather than the frame joint
- Broken hinges, locks or handles
- Soft or decayed wood in the frame
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
What we seal
- Composite doors
- Aluminium frames
- uPVC windows
- Window sills
- Patio & French doors
- Timber windows & doors