Greater London · England
Sand Mastic specialist in Uxbridge
We cover Uxbridge for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Modern sealant on a period surround
- Gaps where the frame meets the masonry
- Old cement repairs round a window that have failed
Sand mastic in Uxbridge: local notes
In a converted house or block, who looks after the windows depends on the lease, so check that before you book. The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For landlords with property near West Drayton station, any sash windows need sound mastic to keep draughts and rain out. As a London address, Uxbridge can be tricky for parking: let us know about parking bays, permits or a driveway. If you live in an older home near Church of St Andrew, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Uxbridge is about 3 miles north-west of Hayes, in Greater London. For sand mastic in and around Uxbridge, it’s easy to get a quote: please ring 07833 053749 or email us. We are based in Crawley and cover Greater London, Uxbridge included. Our Greater London coverage runs to 786 places, and Uxbridge is one of them.
Every address in UB8, UB10 and UB9 is covered for sand mastic, from the main roads to the quietest streets. Local streets include York Road, Lawn Road and How's Road, all of which we cover. Uxbridge is on the A4007, which makes it straightforward to reach with everything needed for sand mastic. Close by, we work in Cowley (1 mile south), New Denham (1 mile north-west), Hillingdon (1 mile east), Ickenham (2 miles north-east) and Yiewsley (2 miles south). Within a short drive, we also cover City of Westminster (14 miles east), Marylebone (14 miles east), Kensington (12 miles east), Hampstead (13 miles east), Ruislip (4 miles north-east) and Brompton (14 miles east).
Around Uxbridge
In Uxbridge, that means homes and buildings near Three Tuns pub, West Middlesex College and Uxbridge High School. Uxbridge’s nearest station is West Drayton station, about 2.1 miles south. Nearby you’ll also find The Chimes (within half a mile north) and Hillingdon Museum and Archives Services (within half a mile north). Not far away are Uxbridge Moor and Horse Shoe Bay.
How we handle sand mastic in Uxbridge
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic is the traditional choice, and we can replace one with the other. We work on sash and case windows, tenement windows and period & listed homes, and common reasons people get in touch are draughty sash windows at the surround and failed mastic on an exposed elevation. Looking for a local mastic man in Uxbridge? Mr Mastic covers Uxbridge.
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, letting in draughts and water.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Where
- Uxbridge (UB8, UB10, UB9)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 07833 053749
- Last updated
- 26 October 2026
When it isn’t the sealant
We’ll always be straight with you, so here’s what new sealant will not do:
- Crumbling stone or brickwork round the window
- Decisions on consent for listed homes
- Sashes that rattle, stick or will not open
If you’re not sure, just phone 07833 053749 or send us an email and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Sash and case windows
- Brick reveals
- Period & listed homes
- Stone surrounds
- Timber door frames
- Tenement windows
Also near Uxbridge
Also in Uxbridge
What happens if it’s left?
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. 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.
No two jobs are quite the same, 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 book with us
- We never seal over old sealant
- Rated 4.9 stars on Google
- 20+ years of sealant experience
- Quality sealants from Arbo and Everbuild
Take a look at how sealant jobs are priced and what customers say.
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Do not run silicone over sand mastic
- Leave the new mastic unpainted
- Have rotten timber repaired before new mastic goes in
- Ask the planning authority about consent for listed or conservation-area homes
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
Questions from Uxbridge
Do you work for landlords with property near West Drayton station?
Yes, rental work is part of what we do. You can phone 07833 053749 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you cover Uxbridge for sand mastic?
Yes, Uxbridge is within the area we cover. Our work covers London and the South East. You can call 07833 053749 or email us and tell us what needs doing, and we’ll send you a clear quote.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
How long does sand mastic take to go off?
The surface skins quite quickly, then hardens over a longer period. The weather and joint depth both affect it.
Is it OK to seal over old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
What does sand mastic cost?
It depends on the job, so we quote each one individually. To get one, call 07833 053749 or send us an email and let us know what needs doing and where.
Is consent needed for window work on a listed home?
Check with your local planning authority. They’ll tell you if consent is needed.
Can you quote for more than one area?
Yes. More than one area can be quoted together.
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
The process
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take anything from a few hours to a full day, depending on how many windows. In Uxbridge, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Getting ready for the visit
- Keep children and pets away from the work area
- Move anything stored near the joints
- Let us know if you’ve seen damp or leaks
Getting a quote
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll take it from there.
Related advice
Quotes for sand mastic in Uxbridge
Jobs vary more than people expect. The main factors:
- The amount of work
- Any mould that needs treating
- The type of sealant required
- When we can work, for business premises
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Asking for a quote
You do not need to know the technical terms. It helps if you can tell us:
- What’s wrong with the joints now
- Whether it has been sealed before
- The address or postcode of the job
- How many joints, rooms or windows are involved
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, call 07833 053749 or email us.
What the job involves on each surface
Timber door frames
Door frames get knocked and soaked, so their mastic can fail sooner. It’s renewed by hand.
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.