Greater London · England
Window & door mastic in South Tottenham, Greater London
Window mastic in South Tottenham from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Damp patches on the reveal after heavy rain
- Whistling draughts around closed windows
- Cracked internal joints between frame and plaster
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Avoid blasting the frames with a pressure washer
- Paint up to the joint, not over it
- Repaint timber before it’s bare
- Ventilate rooms so frames don’t stay wet inside
Wipe the frames with soapy water when you clean the windows, and keep solvents and harsh chemicals off the joint.
Leaks normally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
About our window mastic in South Tottenham
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. Common call-outs are for white mastic on grey or black frames and rain getting in at the frame or under the sill, across patio & French doors, composite doors and timber windows & doors.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, letting in draughts and water.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Where
- South Tottenham (N15, N17, N16)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of window mastic
Your quote is based on your job. We look at:
- The number and length of the joints
- Access and height
- Working hours on commercial sites
- The old material and how stubborn it is
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Helping us quote
Photos help, but a description is a good start. Please mention:
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- Any access issues, like height or stairs
- What’s wrong with the joints now
If you’re in South Tottenham and need window mastic, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Leave it or put it right?
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. Resealing now is a small job by comparison. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in South Tottenham, the repair is bigger than a sealant job.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What you get with us
- We agree the colour with you first
- Anti-fungal silicone where joints get wet
- Fully insured
- Domestic, commercial and hotel work
Read our cost guide and customer reviews.
South Tottenham homes and the weather
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Bruce Castle (about 1.1 miles north) nearby, there’s older building stock in the area around South Tottenham 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.
As a London address, South Tottenham 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 cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
South Tottenham is about 2 miles west of Walthamstow, in Greater London. We carry out window mastic for homeowners, landlords and businesses in South Tottenham and the surrounding area. 764 places in Greater London are on our list, large and small. There’s also a page for London, about 6 miles away.
Here we cover the N15, N17 and N16 postcode area for window mastic. That includes homes and businesses on Ida Road, Elmar Road and Grove Road and the roads around them. We also cover the places around South Tottenham: Seven Sisters (1 mile south), Tottenham Green (1 mile north), St Ann's (1 mile west), Tottenham Hale (1 mile north-east) and West Green (1 mile west). Within a short drive, we also cover London (6 miles south), City of Westminster (6 miles south-west), Marylebone (6 miles south-west), Kensington (8 miles south-west), St Pancras (4 miles south-west) and Shoreditch (4 miles south).
Around South Tottenham
Typical jobs here are in homes near Church of St Andrew, Ada College and Gladesmore Community School and the streets around them. You’ll also find Chestnuts Park (0.7 miles west) and No.8 Seven Sisters pub (0.5 miles south-west). There’s a railway station in South Tottenham itself: Seven Sisters station. Nearby you will also find The Mall Wood Green (1.7 miles north-west) and North Middlesex University Hospital (2 miles north). For a walk, there’s Highgate Hill and Woodberry Wetlands.
FAQs for South Tottenham
Is parking an issue for window mastic in South Tottenham?
Parking in South Tottenham, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Can you do window mastic in South Tottenham?
Yes. Our work covers London and the South East, and South Tottenham is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Is it messy?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Where do you work from?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before resealing.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you.
Can you do upstairs windows?
Yes, where they can be reached safely. Let us know about access when you ask for a quote so we can plan the job.
Common problems we fix in South Tottenham
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and timber moves with moisture as well as temperature.
Look out for any of the following:
- Rain getting in at the frame or under the sill
- Gaps between the frame and the inside reveal
- Sealant in the wrong colour for the frame
- Gaps left after new windows were fitted
If you look after a building such as Earlsmead Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before you book
- How long the guarantee is
- What the cure time is
- Who turns up on the day
- What the quote includes, VAT included or not
Honest limits
New sealant can’t fix everything, and we’ll tell you before we start. It will not solve:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Rotten timber, which needs a joiner first
- Penetrating damp from a failed cavity tray or render
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Window sills
- Timber windows & doors
- Patio & French doors
- Composite doors
- Aluminium frames
- uPVC windows
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can go on one quote.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Also near South Tottenham
What else we do in South Tottenham
How it works
There is not much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes a few hours for a few frames, or a day or more for a whole house from start to finish. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in South Tottenham. It helps if you can point us to a visitor permit or a bay close to the door.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
- Mention if the joints have been sealed before
Getting a quote
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before any work starts.