Greater London · England
Haggerston Window Mastic
We cover Haggerston for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Untidy mastic left by window fitters
- A bead that doesn’t match the frame
- Cracked or shrunken mastic around the frame
How the job changes by surface
Window sills
Stone and concrete sills have their own joints, and the joint under the frame can let rain run behind. We seal those with a sealant suited to masonry.
Aluminium frames
Large aluminium doors have long joints down each side and across the head, and the threshold joint takes a lot of water. Each is cleaned, backed where deep and resealed.
Window mastic in Haggerston, done properly
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. If you have untidy mastic left by window fitters and mastic that’s falling out in pieces, we can help.
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.
Big or small, it’s backed by our 12-month guarantee in Haggerston and across Greater London.
- Place
- Haggerston (N1, E2, E8)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Haggerston
More services for Haggerston
What window mastic looks like in Haggerston
With historic houses such as Sutton House (about 1.5 miles north-east) nearby, there’s older building stock in the area around Haggerston as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Randal Cremer Primary School, the mastic around its windows and doors needs looking after like any other building’s. As a London address, Haggerston can be tricky for parking: let us know about parking bays, permits or a driveway.
Haggerston is about 1 mile east of Hoxton, in Greater London. Haggerston gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Haggerston is one of 764 towns and villages in Greater London where we work for window mastic.
Here we cover the N1, E2 and E8 postcode area for window mastic. Whether your property is on Hyde Road, Glebe Road and Ufton Road or a nearby road, we can help. Haggerston is on the A1208, which makes it straightforward to reach. If you’re just outside Haggerston, we cover Hoxton (1 mile west), Shoreditch (1 mile south), De Beauvoir Town (1 mile north), Kingsland (1 mile north) and Bethnal Green (1 mile south-east). Further out, we also cover London (3 miles south), City of Westminster (4 miles south-west), Marylebone (3 miles west), Kensington (6 miles south-west), Walthamstow (4 miles north-east) and Hampstead (5 miles west).
Around Haggerston
We work in homes and buildings around The Prince's School of Traditional Arts, Haggerston Park and Stag's Head pub and the streets around them. You will also find Bishopsgate Institute Special Collections and Archives (1.1 miles south) and The Bridge Academy (under half a mile north-east). There’s a railway station in Haggerston itself: Hoxton station. A little further out are Museum of the Home (within half a mile south) and Montfichet's Tower (1.8 miles south-west). Green spaces nearby include St. James's Park Lake and Barnsbury Wood.
Landlords, agents and businesses in Haggerston
We also work for property managers and facilities teams. Several sites can be quoted together.
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.
Why act early in Haggerston
Failed mastic isn’t a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that is needed. If we find failed glass units or worn seals, we’ll tell you. 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 Haggerston, the repair is bigger than the sealant job would have been.
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’ll give you an honest view and a quote.
Why book with us
- Neat joints and a tidy finish
- A choice of colours where the product allows
- 20+ years of sealant experience
- A sealant colour to suit the surroundings
Read how sealant jobs are priced and customer reviews.
Common questions in Haggerston
Is parking an issue for window mastic in Haggerston?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Can you do window mastic in Haggerston?
Yes. Our work covers London and the South East, and Haggerston is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can you do the inside joint as well?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
I rent my home. Can I book you?
We can work for tenants, landlords or agents. Get your landlord’s agreement first.
Will new mastic stop draughts?
Often, yes. Air often gets in between the frame and the wall, and resealing inside and out closes it.
How long does it take to reseal the windows on a house?
It depends on access, the old mastic and the size of the frames. You’ll know the timing when we quote.
The process
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The job generally takes a few hours for a handful of frames, longer for a whole house. In Haggerston, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- 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.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Mention any tricky access
- Let us know about earlier repairs to the joints
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you are ready, ring 0345 464 0079 or send us an email.
Related advice
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
Do you need window mastic in Haggerston?
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the brick or render around it hardly moves. A sealant that can’t keep up eventually tears.
Common reasons people contact us are:
- White mastic on grey or black frames
- Mastic that has split away from the wall
- Old mastic that has gone black or come away
- Damp patches on the reveal after heavy rain
Letting a property close to Hoxton station? Then renewing tired window mastic between tenants heads off draught and damp complaints.
Comparing quotes
- How the joint is cleaned and prepared
- What guarantee comes with the work
- Whether they seal over old material or remove it
- What insurance they hold
What affects the cost of window mastic
Call for a quick quote. What matters most is:
- The number and length of the joints
- Whether the work is at height
- Any mould that needs treating
- How many areas need sealing
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first.
Asking for a quote
Photos by email are helpful but not essential. Please mention:
- The type of property
- Any access issues, like height or stairs
- The problem you’ve noticed
- Whether it has been sealed before
If you are in Haggerston and need window mastic, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.