Greater London · England
Hackney Marshes Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Hackney Marshes, backed by a 12-month guarantee. Call for a quick quote.
- Mastic round period door frames that has failed
- Mastic dropping out of the joint
- Old cement repairs round a window that have failed
What we cannot put right
Before booking, it’s worth knowing the limits too:
- Masonry that needs repairing
- Sash cords, weights and draught-proofing of the sashes
- Decayed frames that need repair
Not sure which it is? You can ring 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Sash and case windows
- Period & listed homes
- Timber door frames
- Stone surrounds
Sand mastic in Hackney Marshes, done properly
Silicone on a period window often looks wrong and isn’t always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. We work on sash and case windows, brick reveals and stone surrounds, and people most often call us about gaps where the frame meets the masonry and cracked mastic round a front door frame.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Hackney Marshes.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Hackney Marshes (E5, E10, E9)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
When to call us in Hackney Marshes
Timber frames move with the seasons. The movement cracks the mastic over time.
Signs it’s time to call us include:
- Modern sealant on a period surround
- Cement or filler used on old window joints that has cracked
- Gaps where the frame meets the masonry
- Draughts and rain around sash boxes
Rented homes near Lea Bridge station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- How the joint is cleaned and prepared
- What product goes in the joint
- Whether all the old sealant comes out first
- Whether you can choose the colour
Questions from Hackney Marshes
Do you work for landlords with property near Lea Bridge station?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. You can ring 0345 464 0079 or email us with the details for a clear quote.
Can parking be tricky for a visit in Hackney Marshes?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or drop us an email.
Where are you based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic can sit properly.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
How long will you be here?
A typical job takes anything from a few hours to a full day, depending on how many windows. Your quote will say how long we expect yours to take.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Towns and villages near Hackney Marshes
Other services in Hackney Marshes
Why act early in Hackney Marshes
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. You will know the price before we begin.
Why Hackney Marshes clients choose us
- 20+ years of sealant experience
- We never seal over old sealant
- A 12-month guarantee on all work
- Anti-fungal sanitary silicone in wet areas
Take a look at what affects the cost and customer reviews.
Frames and glazing around 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 is traditional sand mastic. In a converted house or block, who looks after the windows depends on the lease, so check that before you book.
In the older streets around The Risen Christ and All Souls, the joint between an old wall and a newer frame is generally the first place rain gets in. As a London address, Hackney Marshes can be tricky for parking: let us know about parking bays, permits or a driveway.
Hackney Marshes is about 1 mile north-east of Homerton, in Greater London. Jobs in Hackney Marshes get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Hackney Marshes is one of 764 towns and villages in Greater London we cover for sand mastic.
Postcode districts we cover here for sand mastic: E5, E10 and E9. Streets in the area include Glyn Road, Gilpin Road and Redwald Road. With the A106 close by, Hackney Marshes is easy for our applicators to reach for sand mastic. If you are just outside Hackney Marshes, we cover 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).
What’s near Hackney Marshes
Around Hackney Marshes, our work takes us to homes and buildings near Leyton Jubilee Park, Lammas School and Sixth Form and The Adam & Eve pub. The closest station to Hackney Marshes is Lea Bridge station, about 0.7 miles north-west of the centre. Nearby you will also find Tower of London (3.9 miles south-west) and V&A East (1.3 miles south-east). Open spaces near Hackney Marshes include Old Ford Island and Tower Hill.
Aftercare tips
To keep the joints looking good and working properly:
- Check with your local planning authority if your home is listed
- Keep modern sealant off the mastic
- Take care around the mastic when scraping paint
- Sort the mastic before the decorators arrive
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Landlord and commercial work in Hackney Marshes
If you manage several properties in or around Hackney Marshes, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours per window, depending on the condition of the joints, and the area is left clean. 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.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Mention any sign-in or site rules at work premises
Get a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved.
Read more
How we quote for sand mastic
Jobs vary more than people expect. The main factors:
- The number and length of the joints
- Any working-time requirements on site
- Which sealant suits the joint
- How much old sealant there is and how hard it is to remove
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Where the job is, and your postcode
- Whether it’s a home or a business
- How many joints, rooms or windows are involved
- Any access issues, like height or stairs
Need a quote? Please call 0345 464 0079 or email us with a few details. We will explain what we’d do and send you a clear quote before any work starts.