Greater London · England
Sand Mastic in London Docklands
We cover London Docklands for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- A silicone bead on a sash window that spoils the look
- Cement or filler used on old window joints that has cracked
- Draughts and rain around sash boxes
About our sand mastic in London Docklands
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. Renewing it closes the gap so the surround looks right again. Common call-outs are for mastic worn away on windows facing the weather and patchy fillers round a sash window, on brick reveals, stone surrounds and sash and case windows.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in London Docklands.
Big or small, you get the same one-year guarantee in London Docklands and across Greater London.
- Location
- London Docklands (E14, SE16, E22)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
London Docklands homes and the weather
Historic houses like Queen's House (about 1.8 miles south) are a reminder that the area around London Docklands 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Canary Wharf station, any sash windows need sound mastic to keep draughts and rain out. If you live in an older home near St Peter's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
London Docklands is about 2 miles north-west of Greenwich, in Greater London. Across the E14 area, our applicators can take on sand mastic. Our area takes in 764 places across Greater London.
Postcode districts we cover here for sand mastic: E14, SE16 and E22. Whether your property is on Castor Lane, Cassilis Road and Dockyard Lane or a nearby road, our applicators can take on the job. Main roads around London Docklands include the A1206 and A1261. Close by, we work in Canary Wharf (1 mile west), Poplar (1 mile north), Heron Quays (1 mile south-west), Coldharbour (1 mile east) and Blackwall (1 mile east). Further out, we also cover London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles west) and Shoreditch (3 miles north-west).
Around London Docklands
Locally, jobs take us to homes and businesses close to Sir John McDougall Gardens, Our Lady and St Joseph Catholic Primary School and The Ledger Building pub, among other places. There’s a railway station in London Docklands itself: Canary Wharf station. Other landmarks nearby include Greenwich Castle (2 miles south) and Surrey Quays Shopping Centre (1.4 miles south-west). Open spaces near London Docklands include St. James's Park Lake and Lavender Pond.
Places near London Docklands
More services for London Docklands
Landlords, agents and businesses in London Docklands
Housing providers, facilities teams and property managers book us too in London Docklands and across Greater London. We can quote a run of properties together, and we’re fully insured for the work.
In hotels, rooms out of use cost money, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
When something else is needed
Sealant isn’t the answer to every problem, and we’d rather say so up front. It won’t solve:
- Cracked or broken glass
- Sash cords, weights and draught-proofing of the sashes
- Decayed frames that need repair
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Stone surrounds
- Timber door frames
- Sash and case windows
- Period & listed homes
- Brick reveals
- Tenement windows
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Get any rot dealt with first
- Find out about consent before window work on a listed home
- Keep sills and gutters clear so water drains away
- Plan mastic work ahead of painting
Avoid painting over the new mastic, as traditional guidance advises. If you’re redecorating, ask us first.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
Different surfaces, different methods
Period and listed homes
A traditional finish suits a period property.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
How we quote for sand mastic
We quote each job individually. These are the things that affect it:
- How many areas need sealing
- Which sealant suits the joint
- Access and height
- Whether old sealant or filler has to be cut out
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- The rough size of the job
- Access, such as stairs, a lift or height
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or email us.
Do you need sand mastic in London Docklands?
Rain on the window surround works into any crack and loosens it further. Exposed elevations normally fail first.
Keep an eye out for any of the following:
- Gaps between timber frames and stone or brick
- Modern sealant on a period surround
- Failed mastic on an exposed elevation
- Mastic dropping out of the joint
London Docklands is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Questions to ask before booking
- How long to leave it before use
- Whether they seal over old material or remove it
- What happens if the job turns out different
- How the joint is cleaned and prepared
What happens on the day
We keep the work tidy and contained to the joints we are treating, so you can get on with your day. Expect the work to take a few hours for a single window, longer for several, and we explain the cure time before we leave. In a London area like London Docklands, the main things to plan are parking and access: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Preparing for the visit
- Mention any parking rules near the property
- Try not to wet indoor joints just before the visit
- Mention any tricky access
Get a quote
To get a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Related advice
Your questions about sand mastic in London Docklands
Can you do sand mastic in London Docklands?
Yes. We work across London and the South East, and London Docklands is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear price.
Can you help a landlord with a rental near Canary Wharf station?
Yes. We work for landlords and letting agents as well as homeowners. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Can old silicone round a sash window be swapped for sand mastic?
Often, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Are you fully insured?
Yes. Mr Mastic is fully insured.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will talk you through it.
Do you work for hotels and businesses?
Yes. We can plan bigger jobs in stages to suit the site.
Where do you work from?
Our base is in Crawley, and we work across South East England, London and Scotland.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.