Greater London · England
Window & door mastic in Ruxley, Greater London
Specialist window mastic for Ruxley: careful preparation, the right product and tidy work. Call for a quick quote.
- Cracked internal joints between frame and plaster
- Cracked sealant at the sill ends
- Water coming in at the bottom corners of a door
Window mastic for homes and businesses in Ruxley
Most frames have an outside joint and an inside one. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. We work on aluminium frames, uPVC windows and composite doors, and people most often call us about white mastic on grey or black frames and black, perished sealant on frames.
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, letting in draughts and water.
We stand behind the work with a one-year guarantee, so you’re covered after we’ve gone.
- Location
- Ruxley (DA14)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Ruxley
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
DIY sealant or a professional job?
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.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Repaint timber before it’s bare
- Keep paint off silicone joints
- Wipe condensation off the frames
- Use gentle cleaners on frames and sealant
Keep the new mastic undisturbed while it cures, following the cure time we give you. Do not point a pressure washer at the joints.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
Towns and villages near Ruxley
What else we do in Ruxley
What we cannot put right
It helps to know what we can’t do:
- Penetrating damp from a failed cavity tray or render
- Faulty window hardware
- Soft or decayed wood in the frame
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Surfaces we seal
- Window sills
- uPVC windows
- Timber windows & doors
- Patio & French doors
- Composite doors
- Aluminium frames
Window mastic in Ruxley: local notes
In London conversions and blocks, the lease decides who is responsible for the frames, so check that before booking. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you live in an older home near St Botolph's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. As a London address, Ruxley can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Ruxley is about 2 miles south-east of Sidcup, in Greater London. Homes, rented property, offices and hotels in Ruxley is covered for window mastic, old or new, large or small. The work is guaranteed for a year. Our Greater London coverage runs to 764 places, Ruxley among them. For nearby work, see our London page.
Our applicators cover all of DA14 for window mastic and the streets around it. If you’re just outside Ruxley, we cover Upper Ruxley (1 mile south-east), Foots Cray (1 mile west), Hockenden (1 mile south-east), North Cray (1 mile north) and Stonehill Green (1 mile east). Further out, we also cover London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), St Pancras (13 miles north-west), Shoreditch (12 miles north-west) and Walthamstow (14 miles north-west).
Landmarks near Ruxley
Typical jobs here are in homes near Kemnal Technology College, Foots Cray Meadows and Walsingham School, among other places. Ruxley’s nearest station is Albany Park station, roughly 1.5 miles north. Other landmarks nearby include Metropolitan Police Museum (1.8 miles north-west) and Eynsford Castle (4.6 miles south-east). Open spaces near Ruxley include The Warren and Summer Hill.
What happens on the day
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. It normally takes most of a day for a typical house, less for a few frames. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Ruxley. It helps if you can point us to a visitor permit or a bay close to the door.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
For window mastic in Ruxley, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Why deal with it now?
If you’re painting or rendering, reseal at the same time. A clean new bead makes new paint or render look finished. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in Ruxley, the repair is bigger than the sealant job would have been.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or drop us an email.
Why us?
- Any old sealant cut out fully, not covered over
- A choice of colours where the product allows
- Tidy, careful work
- 4.9 on Google from 180+ five-star reviews
Read what affects the cost and what customers say.
Questions from Ruxley
Do you work for landlords with property near Albany Park station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Is parking a problem for a job in Ruxley?
Parking in Ruxley, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Do you cover Ruxley?
Yes. We work in Ruxley. To book, call 0345 464 0079 or send us an email.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Can you do several jobs on one visit?
Yes. Just list everything you need and you will get one quote.
How long does it take to reseal the windows on a house?
Allow a few hours for a handful of frames, longer for a whole house. Access and the amount of old mastic make the biggest difference.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
Do you guarantee window mastic?
Yes. All our work carries a 12-month guarantee, and we’re ARBOMaster approved applicators.
What we are called out for in Ruxley
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, and a gap filled solid cannot flex. That is what backing rod is for.
The problems people generally mention when they call include:
- Gaps where the sill meets the wall
- Draughty joints inside around the window
- Untidy mastic left by window fitters
- Cracked or shrunken mastic around the frame
If you look after a building such as Hope Community School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- What happens if they find a problem under the old sealant
- How the joint is cleaned and prepared
- Is the old sealant removed completely?
- What the cure time is