Greater London · England
Sand Mastic in Acton Vale
Sand mastic across Acton Vale and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Mastic dropping out of the joint
- Failed mastic on an exposed elevation
- Mastic round period door frames that has failed
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Sand mastic for homes and businesses in Acton Vale
We renew sand mastic around sash windows and doors in stone and brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. We work on timber door frames, brick reveals and stone surrounds, and the jobs we see most are mastic worn away on windows facing the weather and draughty sash windows at the surround.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. The mastic around them dries out and cracks with age, which is when draughts and damp patches appear in homes in Acton Vale.
Whatever the size of the job, it’s backed by our 12-month guarantee in Acton Vale and across Greater London.
- Where
- Acton Vale (W12, W3, W4)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Acton Vale: your questions answered
Can you do sand mastic in Acton Vale?
Yes, Acton Vale is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing, and we’ll give you a clear price.
Is parking a problem for a job in Acton Vale?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. The visit is then planned around what’s available.
Can you work on commercial sites?
Yes. We’ve worked for hotels, offices and other businesses.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours for a single window, longer for several. We will tell you when we quote.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Can I paint the new mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They decide whether consent is needed.
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will give you a quote.
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Masonry that needs repairing
- Whether work needs listed building consent
- Broken panes
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think before you book.
Where we work in Acton Vale
- Tenement windows
- Stone surrounds
- Period & listed homes
- Brick reveals
- Sash and case windows
- Timber door frames
When to call us in Acton Vale
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber and we normally remove them.
Most people get in touch when they notice one of these:
- Patchy fillers round a sash window
- Mastic worn away on windows facing the weather
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
If you look after a building such as Wendell Park Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Questions to ask before you book
- Which colour the sealant will be
- What the quote includes, VAT included or not
- Whether they’re fully insured
- What preparation is included
What happens if it’s left?
A silicone bead can be quicker, but it can look wrong on a period surround. Sand mastic suits the building and blends with the stone or brick. In London conversions, one flat’s bathroom is often above another flat’s ceiling, so a small leak from tired sealant can mean a neighbour’s ceiling and a lot of disruption. Dealing with it early is far simpler for homes in Acton Vale.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
What you get with us
- Anti-fungal sanitary silicone in wet areas
- Quality sealants from Arbo and Everbuild
- 20+ years of sealant experience
- Any old sealant cut out fully, not covered over
Read what affects the cost and customer reviews.
The process
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Move anything stored near the joints
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
Get a quote
For a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
Related advice
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Keep modern sealant off the mastic
- Check with your local planning authority if your home is listed
- Have rotten timber repaired before new mastic goes in
- Renew mastic before redecorating the windows
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Frames and glazing around Acton Vale
In London conversions and blocks, the lease decides who is responsible for the frames, so it’s worth checking before booking. Historic houses like Emery Walker's House (about 1.2 miles south) are a reminder that the area around Acton Vale has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you live in an older home near St Saviour's Centre for the Deaf, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Letting a property close to Acton Central station? Then any sash windows need sound mastic to keep draughts and rain out.
Acton Vale is about 2 miles west of Kensington, in Greater London. From the centre of Acton Vale to the outskirts, we cover sand mastic for every kind of property. Our area takes in 764 places across Greater London, from the larger towns to small villages. For nearby work, see our London page (7 miles or so).
Postcode districts we cover here for sand mastic: W12, W3 and W4. If you need sand mastic at a property on Shaa Road, Vyner Road and Emlyn Road or a nearby road, our applicators can take on the job. Nearby, we also carry out sand mastic in Bedford Park (1 mile south-west), Acton (1 mile west), Acton Green (1 mile south-west), White City (1 mile east) and Shepherd's Bush (1 mile east). Within a short drive, we also cover London (7 miles east), City of Westminster (4 miles east), Marylebone (5 miles east), St Pancras (6 miles east), Shoreditch (8 miles east) and Walthamstow (11 miles north-east).
Near you in Acton Vale
In Acton Vale, that means homes and buildings near Star Chamber Academy, Library for Iranian Studies and Phoenix Academy. Also close by are Wormholt Park (0.6 miles east) and Princess Victoria Pub (under half a mile east). The closest station to Acton Vale is Acton Central station, roughly 0.5 miles west. Nearby you’ll also find Culture House (1.1 miles east) and Westfield London (1.3 miles east). For a walk, there’s Kew Gardens Lake and Campden Hill.