Greater London · England
Sand mastic for sash & case windows in Turnham Green, Greater London
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Turnham Green. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
About our sand mastic in Turnham Green
Sand mastic skins over fairly quickly but full hardening takes longer. Traditionally, sand mastic is left unpainted and we’ll advise if you are redecorating. We work on brick reveals, tenement windows and period & listed homes, and people most often call us about patchy fillers round a sash window and mastic worn away on windows facing the weather.
Much of London’s older housing was built with timber sash windows, some still in place and some long since replaced. Whatever is in the opening now, the joint between frame and wall is what keeps the weather out.
Every job is covered by a 12-month guarantee, wherever you are in Greater London.
- Location
- Turnham Green (W4, SW13, W6)
- Wider area
- Greater London
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
When something else is needed
New sealant can’t fix everything, and we will tell you before we start. Sealant will not put right:
- Damaged stone surrounds
- Sashes that need overhauling
- Putty and glazing repairs
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Where we work in Turnham Green
- Period & listed homes
- Brick reveals
- Tenement windows
- Sash and case windows
- Timber door frames
- Stone surrounds
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Places near Turnham Green
More services for Turnham Green
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Keep sills and gutters clear so water drains away
- Keep modern sealant off the mastic
- Ask the planning authority about consent for listed or conservation-area homes
- Take care around the mastic when scraping paint
Leave the new mastic unpainted, which is the traditional advice. If you are 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.
Turnham Green: your questions answered
Is parking an issue for sand mastic in Turnham Green?
Parking in Turnham Green, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
Can you help a landlord with a rental near Chiswick station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. If you’re redecorating the window, ask us first and we’ll talk you through it.
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 for work to your windows.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
What guarantee comes with the work?
There’s a 12-month guarantee on every job, sand mastic included.
Why it’s worth doing now in Turnham Green
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. 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.
Every job is a little different, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
Why choose Mr Mastic in Turnham Green
- Full insurance on every job
- Quality sealants from Arbo and Everbuild
- 12-month guarantee on every job
- 180+ five-star Google reviews
Read our cost guide and our reviews.
When to call us in Turnham Green
Some old mastic was never deep enough. Mastic that’s too thin cracks and drops out so we make sure the new mastic is the right thickness.
Look out for these signs:
- Gaps between timber frames and stone or brick
- Silicone on a period window that looks wrong
- Cement or filler used on old window joints that has cracked
- Cracked mastic round a front door frame
In the older streets around St. Nicholas Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- What happens if the job turns out different
- Whether they’re fully insured
- Which sealant they’ll use, and why
- What the cure time is
What sand mastic looks like in Turnham Green
With historic houses such as Hogarth's House (about 0.2 miles west) nearby, there’s older building stock in the area around Turnham Green as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. 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 Chiswick station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. For site and facilities teams at buildings such as The William Hogarth Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Turnham Green is about 2 miles south of Acton, in Greater London. Turnham Green gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Turnham Green is one of 764 places in Greater London we cover. Our London page covers work nearby, about 7 miles away.
We cover every part of the W4, SW13 and W6 postcode area for sand mastic. Sand mastic is available to properties on Duke Road, Short Road and Binns Road. Neighbouring places we cover for sand mastic include Old Chiswick (1 mile east), Chiswick (1 mile north), Grove Park (1 mile south-west), Barnes (1 mile south-east) and Kew (1 mile west). Larger places within reach include London (7 miles east), City of Westminster (5 miles north-east), Marylebone (5 miles north-east), St Pancras (6 miles north-east), Shoreditch (8 miles east) and Walthamstow (12 miles north-east).
Near you in Turnham Green
In Turnham Green, that means homes and buildings near Polish Library POSK in London, George and Devonshire pub and The Swedish School. You’ll also find Chiswick School (under half a mile south-west) and Dukes Meadows (0.8 miles south-west). The nearest railway station is Chiswick station, roughly 0.7 miles south-west. A little further out are Kurdish Museum Library and Archive (0.9 miles north-east) and Barnes Hospital (1.3 miles south). Green spaces nearby include Campden Hill and Duke's Hollow.
How the visit works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a single window, longer for several. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Turnham Green. A visitor permit or a nearby bay makes the visit run more smoothly.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Move anything stored near the joints
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
Get a quote
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.