Greater London · England
Sand Mastic in Hackney Wick
Sand mastic across Hackney Wick and nearby, with every bit of old sealant taken out first.
- Mastic dropping out of the joint
- Silicone on a period window that looks wrong
- Mastic that needs renewing before redecorating
How we handle sand mastic in Hackney Wick
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it and tidies the surround. We are often asked to deal with silicone on a period window that looks wrong and mastic dropping out of the joint, across sash and case windows, tenement windows and stone surrounds.
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, in Hackney Wick as anywhere.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or send us an email.
- Location
- Hackney Wick (E3, E9, E20)
- Region
- Greater London
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of sand mastic
Call for a quick quote. What matters most is:
- Access and height
- The old material and how stubborn it is
- The number and length of the joints
- The product the joint needs
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- The problem you’ve noticed
- Pictures of the joints, sent by email
- The type of property
- Any access issues, like height or stairs
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved and give you a clear quote.
Also near Hackney Wick
Other services in Hackney Wick
Your questions about sand mastic in Hackney Wick
Do you cover Hackney Wick for sand mastic?
Yes. Our work covers London and the South East, and Hackney Wick is part of that. Just call 0345 464 0079 or email us with a few details of the job.
Can parking be tricky for a visit in Hackney Wick?
In much of London, parking needs planning: a visitor permit or a nearby bay makes the day run more smoothly, so mention what’s available when you book.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we’ll talk you through it.
Do you offer different sealant colours?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Can you quote for more than one area?
Of course. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Should I use sand mastic or silicone?
That depends on your windows. On many period windows, sand mastic looks right and suits the building and newer frames normally get a flexible sealant.
Looking after it afterwards
To keep the joints looking good and working properly:
- Check with your local planning authority if your home is listed
- Check the mastic when you check the paintwork
- Take care around the mastic when scraping paint
- Make sure water runs off the sill
Leave the new mastic alone while it firms up. It skins over quickly but needs longer to fully harden.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.
What sand mastic looks like in Hackney Wick
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Sutton House (about 1.3 miles west) nearby, there’s older building stock in the area around Hackney Wick as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Schools such as Mossbourne Riverside Academy are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Rented homes near Hackney Wick station change hands often, and any sash windows need sound mastic to keep draughts and rain out. As a London address, Hackney Wick can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Hackney Wick is about 1 mile west of Stratford, in Greater London. If you need sand mastic in Hackney Wick, please phone 0345 464 0079 or drop us an email for a quick quote. We cover Greater London from our Crawley base. Across Greater London, we cover 764 places, Hackney Wick among them.
Jobs for sand mastic in E3, E9 and E20 is quoted and booked the same way as anywhere else. You will find streets such as Wick Lane, Dace Road and Wyke Road, all of which we cover. Other places close to Hackney Wick include Fish Island (1 mile south), Donnybrook Quarter (1 mile south-west), Old Ford (1 mile south), Temple Mills (1 mile north-east) and East Village (1 mile north-east). We also work in nearby towns such as London (4 miles south-west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (4 miles west) and Shoreditch (3 miles south-west).
Near you in Hackney Wick
Typical jobs here are in homes near Mulberry UTC, Mabley Green and Mulberry UTC and the streets around them. Hackney Wick has its own railway station: Hackney Wick station. Other landmarks nearby include Tower of London (3.3 miles south-west) and V&A East (less than half a mile east). The countryside around Hackney Wick includes Tower Hill and Old Ford Island.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Why it’s worth doing now in Hackney Wick
Filling over old, loose mastic doesn’t last. We remove the loose material first so the new work lasts. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in Hackney Wick.
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
Why book with us
- Over 20 years’ experience
- We leave the area clean and tidy
- 180+ five-star Google reviews
- Homes, businesses and hotels
Take a look at what affects the cost or customer reviews.
What we can’t put right
Before you book, it’s worth knowing the limits too:
- Damaged stone surrounds
- Planning or listed building consent (your local planning authority decides)
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
What we seal
- Tenement windows
- Period & listed homes
- Stone surrounds
- Sash and case windows
- Timber door frames
- Brick reveals
Different surfaces, different methods
Timber door frames
Doors face weather and wear, so their mastic can fail sooner. We rake it out and renew it.
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
The process
We keep the work tidy and contained to the joints we’re treating. Expect the work to take a few hours per window, depending on the condition of the joints, and we tell you how long to leave it before we go. For a job in Hackney Wick, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
Get a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand.