Greater London · England
Sand mastic for sash & case windows in Upton, Greater London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Upton and across Greater London. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps round a timber door in stone or brick
- Silicone on a period window that looks wrong
- Mastic dropping out of the joint
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Ask the planning authority about consent for listed or conservation-area homes
- Avoid heavy scraping on the mastic joint
- Clear gutters so water does not pour onto the windows
- Renew mastic before redecorating the windows
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
Sand mastic in Upton, done properly
We renew sand mastic around sash windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We work on brick reveals, tenement windows and period & listed homes, and people most often call us about wind and rain getting in round a sash window and window mastic to renew ahead of painting.
Many London homes are flats, with windows high above the street. Who looks after the outside of the frames can depend on the lease, so check that first, and access in Upton is something to talk through when you book.
Whatever the size of the job, it’s backed by our 12-month guarantee in Upton and across Greater London.
- Place
- Upton (E7, E13, E15)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Towns and villages near Upton
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Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Decisions on consent for listed homes
- Broken panes
- 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 before you book.
Surfaces we seal
- Timber door frames
- Sash and case windows
- Brick reveals
- Period & listed homes
- Tenement windows
- Stone surrounds
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Whether the work is at height
- Which sealant suits the joint
- How many areas need sealing
- Any mould that needs treating
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Asking for a quote
When you call or email, it’s useful to know:
- How many joints, rooms or windows are involved
- If someone has resealed it before
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, ring 0345 464 0079 or send us an email.
How the visit works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours for a single window, longer for several, and the area is left clean. For a job in Upton, parking and access are the things to plan: let us know about parking, the floor we will be working on and any lift or shared entrance.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Move anything stored near the joints
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
Ask for a quote
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or email us and describe the job, and pictures are welcome.
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Your questions about sand mastic in Upton
Do you cover Upton for sand mastic?
Yes. We work across London and the South East, and Upton is part of that. You can phone 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear price.
I let a flat near Forest Gate station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can go on one quote. Just call 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Do you offer different sealant colours?
Most of the time, yes. We’ll explain which colours are available.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will talk you through it.
Landlord and commercial work in Upton
Letting agents often deal with us directly. Tell us the address, the job and how access works.
For anyone letting property in or around Upton, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
Common problems we fix in Upton
Age is the main cause. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
Keep an eye out for any of the following:
- Open joints round the window box
- Modern sealant on a period surround
- Patchy fillers round a sash window
- Cracked mastic round a front door frame
For landlords with property near Forest Gate station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Before you book anyone
- What insurance they hold
- When the joint can take water or movement
- Whether all the old sealant comes out first
- How the joint is cleaned and prepared
How the job changes by surface
Stone surrounds
Stone openings are rarely perfectly straight, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
What sand mastic looks like in Upton
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. With historic houses such as Valentines Mansion (about 2.8 miles north-east) nearby, there’s older building stock in the area around Upton as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For an older house near a landmark such as St Peter's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. As a London address, Upton can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Upton is about 1 mile north of Plaistow, in Greater London. From the centre of Upton to the outskirts, sand mastic is available for homes and businesses alike. Upton is one of 764 places in Greater London where we work for sand mastic. For nearby work, see our London page.
Our applicators cover all of E7, E13 and E15 for sand mastic. We cover properties on May Road, West Road and Park Road. Nearby, we also carry out sand mastic in Upton Park (1 mile south-east), Greengate (1 mile south), West Ham (1 mile south-west), Forest Gate (1 mile north) and Plashet (1 mile east). Larger places within reach include London (6 miles south-west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (6 miles west) and Shoreditch (5 miles west).
What’s near Upton
Typical jobs here are in homes near St Bonaventure's RC School, West Ham Park and Spotted Dog pub, among other places. For rail, the closest station is Forest Gate station, about 0.8 miles north. A little further out are Queen Mary's Hospital for the East End (1 mile west) and Greenwich Castle (4.4 miles south). Not far away are Hollow Pond and Tower Hill.