Greater London · England
Sand Mastic in East End of London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in East End of London, with a one-year guarantee on every job. Ask us for a quote.
- Gaps round a timber door in stone or brick
- Mastic that needs renewing before redecorating
- A silicone bead on a sash window that spoils the look
How the job changes by surface
Period and listed homes
On a listed home or in a conservation area, the right material matters. Like-for-like sand mastic is normally favoured.
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
About our sand mastic in East End of London
A silicone bead around a sash window can look out of place and isn’t always the right material. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. Typical jobs include old sand mastic that has cracked, crumbled or fallen out and wind and rain getting in round a sash window, across sash and case windows, timber door frames and tenement windows.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Either way, the mastic between frame and brickwork is what stops draughts and rain getting in.
Every job comes with a one-year guarantee.
- Location
- East End of London (E1, E1W, E98)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about sand mastic in East End of London
Is East End of London in your area for sand mastic?
Yes. Our work covers London and the South East, and East End of London is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
I let a flat near Shadwell station. Can you help?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or email us and tell us about the property, and we will give you a clear price.
Can I choose the sealant colour?
Yes. White, clear and grey are common, and other colours are available, and we’ll agree it with you first.
What exactly is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and finished to sit neatly against the masonry.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover East End of London and the rest of Greater London.
How long does sand mastic take?
Most jobs take anything from a few hours to a full day, depending on how many windows, including preparation and clearing up. Your quote will say how long we expect yours to take.
How it works
You don’t need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the work takes anything from a few hours to a full day, depending on how many windows in most cases. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Mention any sign-in or site rules at work premises
- Mention any tricky access
- Keep children and pets away from the work area
Getting a quote
Want a quote for sand mastic? Please ring 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
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What sand mastic looks like in East End of London
Historic houses like Mansion House (about 1.5 miles west) are a reminder that the area around East End of London has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as St Mary and St Michael Primary School, its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near Shadwell station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
East End of London is about 1 mile east of Whitechapel, in Greater London. East End of London gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. East End of London is one of 764 places in Greater London where we work.
Jobs for sand mastic in E1, E1W and E98 works the same way as everywhere else we cover. Whether your property is on New Road, Glamis Road and Steel's Lane or anywhere close by, our applicators can take on the job. If you’re just outside East End of London, we cover Stepney (1 mile north-east), Ratcliff (1 mile south-east), Wapping (1 mile south-west), St George in the East (1 mile south-west) and Shadwell (1 mile south-east). Within a short drive, we also cover City of Westminster (4 miles west), Marylebone (4 miles west), Kensington (6 miles west), St Pancras (3 miles west), Walthamstow (5 miles north) and Hampstead (6 miles north-west).
Landmarks near East End of London
In East End of London, that means homes and buildings near Stepney Green Park, George Tavern and Bishop Challoner Boys' School, among other places. Nearby too are St Mellitus College (under half a mile south-west) and Bishopsgate Institute Special Collections and Archives (1.1 miles west). There’s a railway station in East End of London itself: Shadwell station. Other landmarks nearby include Tower of London (1 mile south-west) and Surrey Quays Shopping Centre (1.3 miles south). Not far away are Tower Hill and Lavender Pond.
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Get any rot dealt with first
- Avoid heavy scraping on the mastic joint
- Look over the window mastic once a year
- Avoid patching sand mastic with silicone
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
What sealant work can’t fix
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Putty and glazing repairs
- Timber that has rotted
- Sashes that rattle, stick or will not open
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Tenement windows
- Brick reveals
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Timber door frames
Can I do it myself?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
Quotes for sand mastic in East End of London
Jobs vary more than people expect. What affects the quote:
- Any mould that needs treating
- When we can work, for business premises
- The product the joint needs
- The number and length of the joints
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us and we’ll talk you through it.
What we need to know
You do not need to know the technical terms. Just tell us:
- Where the property is
- A few pictures by email, if you can
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
For sand mastic in East End of London, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Landlords, agents and businesses in East End of London
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
If you manage several properties in or around East End of London, several properties can go on one quote. Send us the addresses and the work at each.