Greater London · England
Window & door mastic in West End, Greater London
Mastic around window and door frames, sills and patio doors for homes and businesses in West End and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Damp patches on the reveal after heavy rain
- Gaps between the frame and the inside reveal
- Hard, cracked sealant around windows
How the job changes by surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
Timber windows & doors
Where timber has rotted at the joint, it needs repairing first. We’ll point out any rot we find, as a joiner will need to deal with it.
Window mastic for homes and businesses in West End
From a single sill to a whole house of windows, the work is priced before anything is done. Just call 0345 464 0079 or send us an email and tell us how many frames there are and how they’re reached for window mastic in West End. Typical jobs include sealant in the wrong colour for the frame and gaps between the frame and the inside reveal, across composite doors, timber windows & doors and uPVC windows.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. Over the years, the sealant around them shrinks, cracks and pulls away, letting in draughts and water.
The work is covered for a year after we finish. If anything is not right with it, phone 0345 464 0079 or email us.
- Location
- West End (W1F, W1D, W1T)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near West End
Also in West End
When to call us in West End
Sills take more water than any other part of a window, 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.
It’s worth asking for a quote if you see:
- Mastic that has split away from the wall
- Draughts coming in around windows and doors
- Draughty joints inside around the window
- A bead that doesn’t match the frame
Schools such as Soho Parish CofE Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- Whether you can choose the colour
- How the joint is cleaned and prepared
- How hidden problems are handled
- Whether the sealant suits the joint
Keeping the joints in good condition
Aftercare is simple:
- Air rooms to keep condensation down around windows
- Don’t paint over the silicone
- Do not aim a pressure washer at the joints
- Keep paint and stain on wooden frames in good order
Keep the new mastic undisturbed while it cures, for as long as we advise. Keep jet washers away from the frames.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
Windows and doors in West End
Historic houses like Benjamin Franklin House (about 0.4 miles south) are a reminder that the area around West End has older buildings as well as new. 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. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near Tottenham Court Road station, renewing tired window mastic between tenants heads off draught and damp complaints. As a London address, West End can be tricky for parking: let us know about parking bays, permits or a driveway.
West End is about 1 mile east of City of Westminster, in Greater London. Anywhere in W1F, our applicators can take on window mastic. Our Greater London coverage runs to 764 places, and West End is one of them.
Every address in W1F, W1D and W1T is within our area for window mastic. Whether your property is on Duck Lane, Drury Lane and Bridle Lane or anywhere close by, we can help. West End is on the A301 and A400, so it’s easy for us to get to. We also cover the places around West End: Seven Dials (1 mile east), St Giles (1 mile north-east), Soho (1 mile west), Chinatown (1 mile south-west) and Covent Garden (1 mile east). Further out, we also cover Kensington (3 miles west), Walthamstow (7 miles north-east), Whitechapel (3 miles east), Hampstead (4 miles north-west), Ruislip (13 miles west) and Stockwell (3 miles south).
What’s near West End
Locally, jobs take us to homes and businesses close to LSE Shaw Library, Brewdog pub and St Anne's Churchyard, among other places. Also close by are Harris Westminster Sixth Form (1 mile south) and LITE Regal International School (0.7 miles west). West End has its own railway station: Tottenham Court Road station. A little further out are St Paul's Hospital (within half a mile north-east) and Leverian collection (less than half a mile south). Open spaces near West End include St. James's Park Lake and Barnsbury Wood.
FAQs for West End
Do you cover West End for window mastic?
Yes. Our work covers London and the South East, and West End is part of that. You can call 0345 464 0079 or email us and tell us what needs doing.
Can parking be tricky for a visit in West End?
In much of London, parking needs planning: a visitor permit or a bay close to the door helps a lot.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Is the work guaranteed?
Yes. Each job is covered for 12 months, inside or out.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
How the visit works
We bring everything the job needs with us, so you do not need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a morning for a couple of windows and a door. In West End, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
How to prepare
- Let us know about stairs, lifts or work at height
- For indoor joints, keep the area dry beforehand if you can
- On commercial sites, let us know about site rules
Getting a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
Read more
What affects the cost of window mastic
Your quote is based on your job. We look at:
- The number and length of the joints
- How many rooms, windows or areas are involved
- When we can work, for business premises
- Whether old sealant or filler has to be cut out
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we’ll explain what it covers.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- How many joints, rooms or windows are involved
- Where the property is
- Photos by email, if that is easy
- Whether it has been sealed before
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that is easy.
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
If you manage several properties in or around West End, jobs at different addresses can go on one quote. Send us the addresses and the work at each, and pictures by email help.
What happens if it’s left?
Working on frames from a ladder with a sealant gun is not easy, especially upstairs. A professional job is cut out properly, backed where needed and finished neatly, using a product chosen for the frame and wall. 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 West End, the repair is bigger than the sealant job would have been.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why book with us
- Colour agreed with you before any work starts
- Anti-fungal sanitary silicone in wet areas
- A choice of colours where the product allows
- ARBOMaster approved applicator
See our cost guide and what customers say.