Greater London · England
Sand mastic for sash & case windows in Greenford, Greater London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Greenford, with a 12-month guarantee on every job. Ask us for a quote.
- Weathered mastic on the most exposed windows
- Gaps between timber frames and stone or brick
- Draughty sash windows at the surround
Sand mastic in Greenford, done properly
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant and we will explain which is best for yours. Common call-outs are for open joints round the window box and mastic dropping out of the joint, across tenement windows, timber door frames and period & listed homes.
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, letting in draughts and water.
All of our work is guaranteed for twelve months, in Greenford and everywhere else we cover.
- Where
- Greenford (UB6, UB5, UB1)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Windows and doors in Greenford
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. In a converted house or block, who looks after the windows depends on the lease, so check that before you book.
Letting a property close to Greenford station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. As a London address, Greenford can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Greenford is about 3 miles north-west of Ealing, in Greater London. We provide sand mastic to homeowners, landlords and businesses in Greenford and the surrounding area. Greenford is one of 764 towns and villages in Greater London where we work. For nearby work, see our London page (11 miles or so).
All of UB6, UB5 and UB1 is covered for sand mastic, from the main roads to the quietest streets. If you need sand mastic at a property on Courthope Road, Oldfield Farm Gardens and Greenford Road or anywhere close by, we can help. With the A4090 and A4127 close by, Greenford is simple for us to get to for sand mastic. Other places close to Greenford include Northolt (1 mile north-west), Perivale (1 mile east), Sudbury (2 miles north-east), Sudbury Hill (2 miles north-east) and Dormers Wells (2 miles south-west). Further out, we also cover London (11 miles east), City of Westminster (9 miles east), Marylebone (9 miles east), Kensington (7 miles south-east), St Pancras (10 miles east) and Shoreditch (12 miles east).
Around Greenford
Around Greenford, our work takes us to homes and buildings near Ada Lovelace Church of England High School, The Railway pub and Northala Fields, among other places. Greenford has its own railway station: Greenford station. Other landmarks nearby include London Designer Outlet (3 miles north-east) and Clementine Churchill Hospital (2 miles north). Not far away are Northala Fields and Litten Nature Reserve.
Aftercare tips
After the cure time, these simple habits help:
- Do not paint over the new mastic
- Clear gutters so water does not pour onto the windows
- Go gently near the mastic when preparing windows
- Find out about consent before window work on a listed home
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon, but takes longer to harden fully.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll quote.
When something else is needed
A few problems are outside what sealant work can do:
- Sashes that rattle, stick or won’t open
- Masonry that needs repairing
- Whether work needs listed building consent
If you’re not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Where we work in Greenford
- Period & listed homes
- Brick reveals
- Sash and case windows
- Tenement windows
- Stone surrounds
- Timber door frames
Do you need sand mastic in Greenford?
Over the years, sand mastic weathers. It dries out, cracks and loses its grip on the stone or timber.
Keep an eye out for any of the following:
- Tired mastic found when preparing windows for paint
- Silicone on a period window that looks wrong
- Weathered mastic on the most exposed windows
- Gaps round a timber door in stone or brick
If you look after a building such as Oldfield Primary School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- Whether all the old sealant comes out first
- How long the guarantee is
- How hidden problems are handled
- How much experience the applicator has
Towns and villages near Greenford
More services for Greenford
What happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to a full day, depending on how many windows and we leave things clean and tidy. In Greenford, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Keep children and pets away from the work area
- Clear items away from the joints we are working on
- Let us know about earlier repairs to the joints
Getting a quote
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job.
Read more
Surface by surface
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Period and listed homes
A traditional finish suits a period property.
Greenford: your questions answered
Can parking be tricky for a visit in Greenford?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
I let a flat near Greenford station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Will you leave a mess?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
How long does sand mastic take to go off?
It takes a while. The skin forms first, and the full set comes later, and we will tell you what to expect.
Can you quote for more than one area?
Yes. Just list everything you need.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
How do I get a quote for sand mastic in Greenford?
Size, access and the old material all affect the cost. Ask us for a quote.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little.
How we quote for sand mastic
The price is agreed before any work begins. It’s based on:
- Any working-time requirements on site
- How many areas need sealing
- The type of sealant required
- How much old sealant there is and how hard it is to remove
What it costs depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- If someone has resealed it before
- The type of property
- Where the property is
- How we’d reach the joints
To get a quote, phone 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.