Greater London · England
Window & door mastic in The Hyde, Greater London
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in The Hyde. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cold air getting in at the frame edge
- Mastic that has split away from the wall
- A bead that doesn’t match the frame
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Keep drainage slots and sill grooves clear
- Wash the frames with mild soapy water
- Check the mastic once a year
- Wipe condensation off the frames
Silicone can’t generally be painted, so if you’re planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
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 early resealing is worth it.
Window mastic in The Hyde, done properly
From a single sill to a whole house of windows, you will get a clear quote before any work starts. To get one, call 0345 464 0079 or drop us an email with the number of frames and any access details. We are often asked to deal with mastic that’s falling out in pieces and hard, cracked sealant around windows, on uPVC windows, aluminium frames and timber windows & doors.
London has a lot of flats and conversions, where windows are often on upper floors. Who looks after the outside of the frames can depend on the lease, so check that first, and access in The Hyde is something to talk through when you book.
All our work is covered by a one-year guarantee, wherever you are in Greater London.
- Where
- The Hyde (NW9, NW4)
- Region
- Greater London
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to The Hyde
More services for The Hyde
How the job changes by surface
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain cannot run into the wall.
What sealant work cannot fix
Before you book, it’s worth knowing the limits:
- Damp problems in the wall away from the window
- Condensation trapped between the panes
- A sash or casement that will not close properly
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Patio & French doors
- Composite doors
- uPVC windows
- Aluminium frames
- Window sills
- Timber windows & doors
Common questions in The Hyde
Can you help a landlord with a rental near Hendon station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Is parking a problem for a job in The Hyde?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. We remove it all first.
What does window mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, phone 0345 464 0079 or drop us an email and let us know what needs doing and where.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
How many windows can you do in a day?
A few frames take a few hours. You’ll get a timescale with the quote.
Will it make a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Can resealing stop a draught around my window?
In many cases. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
What affects the cost of window mastic
Every job gets its own quote. These are the things that affect it:
- Access and height
- Whether there’s mould to deal with
- Any working-time requirements on site
- The number and length of the joints
Leaving a failed joint normally makes the job bigger, not smaller. If you’re 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.
Helping us quote
Before you ask for a quote, have a think about:
- Where the job is, and your postcode
- If it’s domestic, commercial or a hotel
- What’s wrong with the joints now
- The rough size of the job
For window mastic in The Hyde, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before we start.
Window mastic in The Hyde: local notes
In a converted house or block, who looks after the windows depends on the lease, so check that before booking. With historic houses such as Heath House (about 3.2 miles south-east) nearby, there’s older building stock in the area around The Hyde as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Letting a property close to Hendon station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Homes close to St Matthias the Apostle church include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. If you look after a building such as The Hyde School, its window and door frames need their mastic kept sound, just like a home’s.
The Hyde is about 2 miles north of Neasden, in Greater London. Our applicators cover window mastic for homes and businesses in The Hyde. The Hyde is one of 764 towns and villages in Greater London we cover. We also work in London, about 9 miles from The Hyde.
All of NW9 and NW4 is covered for window mastic. Streets in the area include Alpini Road, Catkin Road and Garrick Road. With the A5 close by, The Hyde is easy for our applicators to reach. Nearby, we also carry out window mastic in West Hendon (1 mile north), Colindale (1 mile north), The Burroughs (1 mile north-east), Hendon (1 mile east) and Staples Corner (1 mile south-east). Further out, we also cover London (9 miles south-east), City of Westminster (6 miles south-east), Marylebone (6 miles south-east), Kensington (6 miles south), St Pancras (7 miles south-east) and Shoreditch (8 miles south-east).
What’s near The Hyde
Around The Hyde, our work takes us to homes and buildings near Moon Under Water pub, Brampton College and West Hendon Playing Fields, among other places. The Hyde has its own railway station: Hendon station. Well-known places in the area include St Andrew's Hospital (1.5 miles south-east) and Church Farmhouse Museum (1.1 miles north-east). Not far away are Parliament Hill and Darland's Lake.
Landlord and commercial work in The Hyde
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll quote.
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.
What we do, step by step
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a few frames, or a day or more 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 The Hyde. 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.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Let us know about parking restrictions
- Let us know about earlier repairs to the joints
- Mention any sign-in or site rules at work premises
Getting a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Advice
Leave it or put it right?
Working on frames from a ladder with a sealant gun isn’t easy, especially upstairs. We cut out properly, back deep gaps and tool every joint neatly, in a sealant suited to the wall. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler for homes in The Hyde.
Doing several joints on one visit normally makes better use of the time than several visits. You will get one clear quote for the whole job.
What you get with us
- Full insurance on every job
- A sealant colour to suit the surroundings
- You choose the colour before work begins
- We never seal over old sealant