Greater London · England
Sand mastic for sash & case windows in Acton Green, Greater London
We cover Acton Green for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Gaps between timber frames and stone or brick
- Cracked mastic round a front door frame
- Old cement repairs round a window that have failed
About our sand mastic in Acton Green
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditional guidance is not to paint over it, so ask us before you decorate. Common call-outs are for gaps between timber frames and stone or brick and old sand mastic that has cracked, crumbled or fallen out, across period & listed homes, brick reveals and sash and case windows.
From mansion-block windows to modern glazing in new flats, London has every kind of frame. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Acton Green.
You are covered for a year from the day we finish. If anything is not right with it, phone 0345 464 0079 or send us an email.
- Where
- Acton Green (W4, W3, W2)
- Region
- Greater London
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Acton Green
Paint, silicone or cement used over old mastic causes problems. They don’t move with the timber, and they usually need raking out.
Keep an eye out for these signs:
- Gaps between timber frames and stone or brick
- Wind and rain getting in round a sash window
- A silicone bead on a sash window that spoils the look
- Old cement repairs round a window that have failed
Homes close to All Saints include some older properties, and the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- Whether they’re fully insured
- Whether VAT is included
- How long the guarantee is
- What product goes in the joint
Honest limits
Sealant is not the answer to every problem, and we will tell you before work begins. It won’t solve:
- Sash cords, weights and draught-proofing of the sashes
- Damaged stone surrounds
- Rotten sashes, sills or window boxes (a joiner’s job)
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Sash and case windows
- Brick reveals
- Stone surrounds
- Timber door frames
- Tenement windows
- Period & listed homes
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Why it’s worth doing now in Acton Green
Not every filler suits an old window surround. Sand mastic is the like-for-like choice, which can matter on listed and conservation-area homes. In a London flat, a failed joint rarely stays your problem alone: water from a shower or window joint can reach the flat below, and gaps in fire-stopping matter to everyone in the building.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What you get with us
- 180+ five-star Google reviews
- 12-month guarantee on every job
- An ARBOMaster approved applicator
- Over 20 years’ experience
Read how sealant jobs are priced or our reviews.
Windows and doors in Acton Green
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.
As a London address, Acton Green can be tricky for parking: let us know about parking bays, permits or a driveway. If you look after a building such as Ark Priory Primary Academy, its window and door frames need their mastic kept sound, just like a home’s.
Acton Green is about 2 miles east of Ealing, in Greater London. We carry out sand mastic for homes and businesses in Acton Green, as part of our work across Greater London. Across Greater London, we cover 764 places, Acton Green among them. For nearby work, see our London page.
Every address in W4, W3 and W2 is within our area for sand mastic. Local streets include Meon Road, Kent Road and Bollo Lane. Close by, we work in Bedford Park (1 mile east), Acton (1 mile north), Acton Vale (1 mile north-east), South Acton (1 mile west) and Hanger Hill (2 miles north-west). We also work in nearby towns such as London (7 miles east), City of Westminster (5 miles east), Marylebone (5 miles east), Kensington (3 miles east), St Pancras (7 miles east) and Shoreditch (8 miles east).
Landmarks near Acton Green
In Acton Green, that means homes and buildings near The Duke Of Sussex Public House, Library for Iranian Studies and Turnham Green. Also close by are Leap Service - the National Autistics Society (0.6 miles north-west) and Ark Soane Academy (0.7 miles north-west). There’s a railway station in Acton Green itself: South Acton station. Nearby you will also find Livat Hammersmith (1.7 miles east) and Queen Charlotte's and Chelsea Hospital (1.6 miles north-east). Not far away are Kew Gardens Lake and Castlebar Hill.
Places near Acton Green
More services for Acton Green
How it works
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. Expect the work to take a few hours per window, depending on the condition of the joints. In Acton Green, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- First we agree which joints need doing.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- Mention any parking rules near the property
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
Getting a quote
We quote each job on its own. Simply call 0345 464 0079 or send us an email and describe the job.
Related advice
Looking after it afterwards
Aftercare is simple:
- Inspect the joints round the windows every year or so
- Clear gutters so water does not pour onto the windows
- Check with your local planning authority if your home is listed
- Avoid heavy scraping on the mastic joint
Leave the new mastic unpainted, which is the traditional advice. If you are redecorating, ask us first.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Questions from Acton Green
Is parking an issue for sand mastic in Acton Green?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Can you help a landlord with a rental near South Acton station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
How do I get a quote for sand mastic in Acton Green?
Every job is different, so each one gets its own quote. For a quick quote, phone 0345 464 0079 or send us an email with a short description of the job.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
How long does the job take?
It depends on the size of the job, but as a guide it takes anything from a few hours to a full day, depending on how many windows. We will give you a better idea when we quote.
Should I check with the council before work on a listed or conservation-area home?
Your local planning authority is the one to ask. They’ll tell you if consent is needed.
What do you put in the joint?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.