Greater London · England
Window & door mastic in Hackney Marshes, Greater London
Mastic around window and door frames, sills and patio doors in Hackney Marshes, with a 12-month guarantee on every job. Call for a quick quote.
- Cold air getting in at the frame edge
- Hard, cracked sealant around windows
- Cracked internal joints between frame and plaster
Can I do it myself?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Window mastic in Hackney Marshes
From a single sill to a whole house of windows, the work is priced before anything is done. Just call 0345 464 0079 or email us and tell us how many frames there are and how they’re reached for window mastic in Hackney Marshes. If you have old mastic that has gone black or come away and cracked sealant at the sill ends, we can help, whatever the surface.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.
Whatever the size of the job, you get the same one-year guarantee.
- Place
- Hackney Marshes (E5, E10, E9)
- Region
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
What affects the cost of window mastic
You will get a clear quote before any work starts. It’s based on:
- How much there is to do
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- The product the joint needs
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Call for a quick quote and we will explain what it covers.
What we need to know
Photos by email are helpful but not essential. Please mention:
- What’s wrong with the joints now
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- Photos by email, if that is easy
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or email us.
What window mastic looks like in Hackney Marshes
With historic houses such as Sutton House (about 1.1 miles south-west) nearby, there’s older building stock in the area around Hackney Marshes as well as newer homes. 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. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
Homes close to The Risen Christ and All Souls include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near Lea Bridge station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Schools such as Kingsmead Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Hackney Marshes is about 1 mile north-east of Homerton, in Greater London. Every kind of property in Hackney Marshes can book us for window mastic. Every job comes with our one-year guarantee. Hackney Marshes is one of 764 places in Greater London we cover for window mastic.
Every address in E5, E10 and E9 is within our area for window mastic. Local streets include Glyn Road, Gilpin Road and Redwald Road, and we cover them all. Being close to the A106, Hackney Marshes is simple for us to get to. Close by, we work in Leyton Grange (1 mile north-east), Lea Bridge (1 mile north-west), Homerton (1 mile south-west), Lower Clapton (1 mile south-west) and Temple Mills (1 mile south-east). Within a short drive, we also cover London (5 miles south-west), 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 (3 miles south-west).
Local landmarks in Hackney Marshes
Locally, jobs take us to homes and businesses close to Leyton Jubilee Park, Lammas School and Sixth Form and The Adam & Eve pub and the streets around them. The closest station to Hackney Marshes is Lea Bridge station, roughly 0.7 miles north-west of the centre. Other landmarks nearby include Tower of London (3.9 miles south-west) and V&A East (1.3 miles south-east). For a walk, there’s Old Ford Island and Tower Hill.
How it works
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes most of a day for a typical house, less for a few frames. In Hackney Marshes, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- 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.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Clear the area around the work
- For business premises, tell us about site rules or sign-in
Get a quote
Want a quote for window mastic? Please phone 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Related advice
Leave it or put it right?
A cracked joint around a frame lets rain into the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Putting it right early is much less trouble.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether we need extra access for height. We take all of that into account in your quote.
Why book with us
- Old sealant always removed completely
- 180+ five-star Google reviews
- Sealant colour chosen to suit
- Anti-fungal sanitary silicone in wet areas
Take a look at what affects the cost or what customers say.
Also near Hackney Marshes
Other services in Hackney Marshes
Aftercare tips
So the new joints stay in good condition:
- Avoid harsh chemicals near the mastic
- Avoid blasting the frames with a pressure washer
- Make sure the drainage slots are not blocked
- Keep timber frames painted
Have a look at the joints once a year, ideally after winter. Cracks and lifting edges are easy to spot early, and if anything looks wrong, just call 0345 464 0079 or send us an email.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Damp problems in the wall away from the window
- Worn gaskets, brush seals or a door that has dropped
- Broken hinges, locks or handles
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Window sills
- Patio & French doors
- Composite doors
- Timber windows & doors
- uPVC windows
- Aluminium frames
FAQs for Hackney Marshes
I let a flat near Lea Bridge station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Is parking an issue for window mastic in Hackney Marshes?
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.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply ring 0345 464 0079 or drop us an email.
Is it OK to seal over old sealant?
No. The old sealant always comes out first.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
When is the sealant fully cured?
Cure times vary by product and the conditions. We tell you how long to leave it before we go.
Do you cover Hackney Marshes?
Yes. We cover Hackney Marshes and the rest of Greater London, as part of our work across South East England, London and Scotland. To book, call 0345 464 0079 or email us.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.