Greater London · England
Window & door mastic in West Green, Greater London
Window mastic across West Green and nearby, with old sealant always removed completely and a 12-month guarantee.
- Gaps where the sill meets the wall
- Sealant in the wrong colour for the frame
- Mastic that has split away from the wall
What sealant work can’t fix
New sealant cannot fix everything, and we’ll tell you before work begins. Sealant will not put right:
- Draughts through the window seals rather than the frame
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Rotten timber, which needs a joiner first
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Window sills
- Timber windows & doors
- Patio & French doors
- Composite doors
- uPVC windows
- Aluminium frames
Window mastic in West Green
Around West Green we seal all kinds of frames: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on patio & French doors, window sills and uPVC windows, and people most often call us about leaking joints at the ends of sills and a bead that doesn’t match the frame.
London’s Victorian and Edwardian terraces were built with timber sash windows, and many still have them or their replacements. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in.
Every job is covered by a 12-month guarantee, wherever you are in Greater London.
- Location
- West Green (N15, N17, N4)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in West Green
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured.
How the job changes by surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
Composite doors
Front doors take the weather head on. Those corners get the most care.
How it works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The work itself takes a few hours for a handful of frames, longer for a whole house, including the tidy-up. In West Green, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- 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
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
- Keep children and pets away from the work area
Get a quote
If you are in West Green and need window mastic, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Read more
Can I do it myself?
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.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
What happens if it’s left?
The work is quick compared with the damage it prevents: it takes anything from an hour or two to a full day, depending on how many frames there are. Leave it until water is coming in and you may need plastering and decorating as well. In a flat in West Green, failed sealant seldom stays inside your own four walls: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Doing several joints on one visit generally makes better use of the time than several visits. We will send you a clear quote for the lot.
Why book with us
- Any old sealant cut out fully, not covered over
- Every job guaranteed for a year
- More than 20 years in sealant work
- We agree the colour with you first
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Make sure the drainage slots aren’t blocked
- Keep paint and stain on wooden frames in good order
- Don’t paint over the silicone
- Avoid blasting the frames with a pressure washer
Check the drainage slots in the frames are not blocked, so rain drains out rather than building up at the sealant.
A failed joint lets water into the wall a little at a time. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
West Green: your questions answered
Do you work for landlords with property near Seven Sisters station?
Yes, we work for landlords and agents. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Is parking a problem for a job in West Green?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
How long does it take to reseal the windows on a house?
The work takes a few hours for a handful of frames, longer for a whole house. Access and the amount of old mastic make the biggest difference.
How do I get a quote for window mastic in West Green?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
When is the sealant fully cured?
That depends on the sealant used, so follow the cure time we give you.
Can you seal over the old sealant?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Can resealing stop a draught around my window?
Yes, where the draught is at the frame edge. We check where the draught is before any work starts.
Towns and villages near West Green
Also in West Green
What window mastic looks like in West Green
Historic houses like Bruce Castle (about 1.1 miles north-east) are a reminder that the area around West Green 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’s traditional sand mastic. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
As a London address, West Green can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Letting a property close to Seven Sisters station? Then renewing tired window mastic between tenants heads off draught and damp complaints. Schools such as West Green Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
West Green is about 2 miles north-west of West Hackney, in Greater London. Jobs in West Green get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Greater London, we cover 764 places, West Green among them. There’s also a page for London, about 6 miles away.
Here we cover the N15, N17 and N4 postcode area for window mastic. Whether your property is on Ida Road, Elmar Road and Ripon Road or anywhere close by, we can help. If you are just outside West Green, we cover Duckett's Green (1 mile north-west), St Ann's (1 mile south-east), Harringay (1 mile south-west), Broadwater Farm (1 mile north-east) and Tottenham Green (1 mile east). Further out, we also cover London (6 miles south), City of Westminster (6 miles south-west), Marylebone (5 miles south-west), Kensington (8 miles south-west), St Pancras (4 miles south) and Shoreditch (4 miles south).
Near you in West Green
Typical jobs here are in homes near The Queens Head pub, Church of St Andrew and Moselle Upper School and the streets around them. Also close by are Downhills Park (within half a mile north) and Park View School (under half a mile north). The nearest railway station is Seven Sisters station, about 0.7 miles east. A little further out are Markfield Beam Engine and Museum (1.3 miles east) and Greentrees Hospital (1.7 miles north). Not far away are Railway Fields and Hollow Pond.