Surrey · England
Sand Mastic in Staines-upon-Thames
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Staines-upon-Thames. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Patchy fillers round a sash window
- Tired mastic found when preparing windows for paint
- Cracked mastic round a front door frame
How we handle sand mastic in Staines-upon-Thames
Our applicators renew the sand mastic around sash and case windows and doors set in stone or 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 sash and case windows, and common reasons people get in touch are old cement repairs round a window that have failed and gaps where the frame meets the masonry.
Staines-upon-Thames mixes older streets, where windows have often been replaced, with newer estates fitted with uPVC. In every case, the joint between frame and wall is what keeps water out.
Whatever the size of the job, you get the same one-year guarantee.
- Place
- Staines-upon-Thames (TW18, TW20, TW19)
- Wider area
- Surrey
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Staines-upon-Thames homes and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Botleys Mansion (about 4 miles south) nearby, there’s older building stock in the area around Staines-upon-Thames as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
For landlords with property near Staines station, older sash windows in a rental need their mastic kept sound to keep the weather out. Homes close to Church of St Peter include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in.
Staines-upon-Thames is about 7 miles south-west of Hayes, in Surrey. Every kind of property in Staines-upon-Thames is covered for sand mastic. Every job comes with our one-year guarantee. Across Surrey, we cover 395 places, and Staines-upon-Thames is one of them. There’s also a page for London, roughly 18 miles from Staines-upon-Thames.
We work across the TW18, TW20 and TW19 postcode area for sand mastic. Whether your property is on High Street, Goring's Square and London Road or anywhere close by, we can help. Being close to the A308 and A320, Staines-upon-Thames is simple for us to get to. Other places close to Staines-upon-Thames include Egham Hythe (1 mile south-west), Penton Hook (2 miles south), Hythe End (2 miles north-west), Egham (2 miles west) and Thorpe (2 miles south-west). Within a short drive, we also cover Guildford (13 miles south), Woking (8 miles south), Camberley (12 miles south-west), Epsom (12 miles south-east), Ewell (12 miles south-east) and Walton-on-Thames (5 miles south-east).
Near you in Staines-upon-Thames
In Staines-upon-Thames, that means homes and buildings near The Star pub, Penton Park and The Magna Carta School, among other places. There’s a railway station in Staines-upon-Thames itself: Staines station. A little further out are Ashford Hospital (1.8 miles north-east) and Spelthorne Museum (0.5 miles north-west). Not far away are Staines Reservoirs and Kempton Park Reservoirs.
When to call us in Staines-upon-Thames
Previous repairs in cement or silicone often trap water or crack away. They do not suit the joint, and they normally need raking out.
These are the problems we are asked about most:
- Gaps where the frame meets the masonry
- Mastic round period door frames that has failed
- Mastic dropping out of the joint
- Patchy fillers round a sash window
Schools such as Riverbridge Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Before you book anyone
- What the quote includes, VAT included or not
- Whether all the old sealant comes out first
- What the cure time is
- How the colour is chosen
What the job involves on each surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Period and listed homes
Period homes look their best with traditional materials, and sand mastic is one of them.
Towns and villages near Staines-upon-Thames
Also in Staines-upon-Thames
What we can’t put right
We’d rather tell you now than do work that will not last, so these are the limits:
- Sash cords, weights and draught-proofing of the sashes
- Crumbling stone or brickwork round the window
- Rotten sashes, sills or window boxes (a joiner’s job)
If in doubt, ring 0345 464 0079 or email us and we will say what we think before you book.
What we seal
- Tenement windows
- Sash and case windows
- Stone surrounds
- Timber door frames
- Brick reveals
- Period & listed homes
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a single window, longer for several. Parking in a town like Staines-upon-Thames is generally straightforward, but tell us if there’s a driveway or any restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
Get a quote
Want a quote for sand mastic? Please call 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Why act early in Staines-upon-Thames
Replacing sash windows is a big decision for a period home and on a listed home, consent may be needed. Where the frames are in good order, new mastic seals the surround. Draughts from a gap round a frame, damp under a sill or water behind a bath panel all start small, and they’re far easier to fix early.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why us?
- Anti-fungal sanitary silicone in wet areas
- Quality sealants from Arbo and Everbuild
- More than 20 years in sealant work
- An ARBOMaster approved applicator
See what affects the cost or our reviews.
Your questions about sand mastic in Staines-upon-Thames
Is sand mastic in Staines-upon-Thames guaranteed?
All our work, in Staines-upon-Thames and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
Do you work for landlords with property near Staines station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or email us with the address and a few details, and we will give you a fixed price before work begins.
Is it possible to take out silicone and use sand mastic instead?
Yes, it’s a common request. The old silicone has to come out completely so the mastic beds in well.
What’s sand mastic made of?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Are you insured?
Yes. Full insurance covers our work.
Is it possible to paint over sand mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll advise.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.