Greater London · England
Sand Mastic in South Ealing
Window and door surrounds in South Ealing need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Failed mastic on an exposed elevation
- Silicone on a period window that looks wrong
- Cracked mastic round a front door frame
Honest limits
We won’t take on work that will not last, so here’s what sealant cannot put right:
- Crumbling stone or brickwork round the window
- Putty and glazing repairs
- Sashes that need overhauling
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly before booking.
Surfaces we seal
- Timber door frames
- Brick reveals
- Period & listed homes
- Tenement windows
- Sash and case windows
- Stone surrounds
How we handle sand mastic in South Ealing
A silicone bead around a sash window can look out of place and isn’t always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. If you have gaps round a timber door in stone or brick and tired mastic found when preparing windows for paint, we can help.
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, in South Ealing as anywhere.
Each job carries a 12-month guarantee.
- Place
- South Ealing (W5, W13, TW8)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
South Ealing questions
I let a flat near Brentford station. Can you help?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Can parking be tricky for a visit in South Ealing?
Parking in South Ealing, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Do I need permission for sand mastic on a listed building?
Your local planning authority is the one to ask. They’ll tell you if consent is needed for work to your windows.
Can you match the sealant colour?
We help you choose a colour that suits. The choice depends on the product the joint needs.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Should I use sand mastic or silicone?
It depends on the window. Period windows in stone or brick usually suit sand mastic and newer frames normally get a flexible sealant.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in.
What exactly is sand mastic?
It’s sand mixed with a linseed-oil-based binder for the joint between timber frames and masonry.
Places near South Ealing
Also in South Ealing
Why it’s worth doing now in South Ealing
Cement-based fillers and modern sealants do not always suit a period surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in South Ealing, the repair is bigger than a sealant job.
Doing several joints on one visit normally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear price for the lot.
Why choose Mr Mastic in South Ealing
- 180+ five-star Google reviews
- Domestic, commercial and hotel work
- We are fully insured
- An ARBOMaster approved applicator
Read our cost guide or what customers say.
When to call us in South Ealing
Some old mastic was never deep enough. A thin layer doesn’t hold well, which is why we pack deep voids first and get the depth right.
Most people get in touch when they notice something like this:
- Silicone on a period window that looks wrong
- Draughts and rain around sash boxes
- Old cement repairs round a window that have failed
- Gaps between timber frames and stone or brick
For site and facilities teams at buildings such as Grange Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Comparing quotes
- When the joint can take water or movement
- Whether they seal over old material or remove it
- What insurance they hold
- What preparation is included
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Letting agents and landlords in South Ealing can book us as well as householders. Resealing between tenancies keeps a property looking cared for.
Aftercare tips
Aftercare is simple:
- Avoid patching sand mastic with silicone
- Leave the new mastic unpainted
- Find out about consent before window work on a listed home
- Avoid heavy scraping on the mastic joint
Look at the mastic when you look over the windows. Catching cracks early keeps repairs small.
An open joint round the box lets weather through. Left, the gap tends to get bigger as more mastic falls out.
Sand mastic in South Ealing: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Gunnersbury Park (about 0.7 miles east) nearby, there’s older building stock in the area around South Ealing as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
South Ealing is in London, so parking needs planning: let us know about parking bays, permits or a driveway. If you live in an older home near St Mary's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
South Ealing is about 1 mile south of Ealing, in Greater London. Jobs in South Ealing get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 764 places in Greater London are on our list. London is on our list too, about 9 miles from South Ealing.
Postcode districts we cover here for sand mastic: W5, W13 and TW8. If you need sand mastic at a property on South Road, Elers Road and Carew Road or anywhere close by, we can help. If you’re just outside South Ealing, we cover Ealing (1 mile north), Hanwell (1 mile north-west), West Ealing (2 miles west), Pitshanger (2 miles north) and Brentham Garden Suburb (2 miles north). We also work in nearby towns such as London (9 miles east), City of Westminster (7 miles east), Marylebone (7 miles east), Kensington (5 miles east), St Pancras (8 miles east) and Shoreditch (10 miles east).
Local landmarks in South Ealing
Typical jobs here are in homes near Lammas Park, Ealing Independent College and Ealing Park Tavern, among other places. Other local landmarks include Library for Iranian Studies (1.4 miles east) and Great Ealing School (less than half a mile north). South Ealing’s nearest station is Brentford station, about 0.9 miles south of the centre. Nearby you’ll also find Gunnersbury Park House - Large Mansion (0.9 miles east) and Ealing Hospital (1.7 miles west). Green spaces nearby include Kew Gardens Lake and Castlebar Hill.
How it works
When we arrive, we look over the joints with you first, so you know exactly what we are doing. We protect the surfaces around the joints before any work begins. The work normally takes a few hours per window, depending on the condition of the joints. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in South Ealing. It helps if you can point us to a visitor permit or a bay close to the door.
- We check the window surrounds and agree which joints need renewing.
- 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.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Move anything stored near the joints
- Let us know about stairs, lifts or work at height
- Tell us about any previous sealing or DIY attempts
Ask for a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, ring 0345 464 0079 or drop us an email.
Advice
Surface by surface
Period and listed homes
Period homes look their best with traditional materials.
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.