Surrey · England
Tadworth Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Tadworth, backed by a 12-month guarantee. Call for a quick quote.
- Mastic worn away on windows facing the weather
- Old sand mastic that has cracked, crumbled or fallen out
- Wind and rain getting in round a sash window
FAQs for Tadworth
Is Tadworth within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Tadworth station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours, and we’ll agree it with you first.
Is it OK to seal over old sealant?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
What should I tell you?
Tell us what needs doing and where, with pictures by email if possible. If we need more, we will ask.
Sand mastic in Tadworth, done properly
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on brick reveals, timber door frames and tenement windows, and people most often call us about draughts and rain around sash boxes and weathered mastic on the most exposed windows.
Homes around Tadworth range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or send us an email.
- Where
- Tadworth (KT20, KT18)
- Region
- Surrey
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Find out about consent before window work on a listed home
- Ask a joiner to look at soft timber first
- Go gently near the mastic when preparing windows
- Clear gutters so water does not pour onto the windows
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours per window, depending on the condition of the joints. A visit to Tadworth is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling 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.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Mention any tricky access
- Let us know about earlier repairs to the joints
Ask for a quote
We quote each job on its own. Simply phone 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.
Related advice
Landlord and commercial work in Tadworth
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured for the work.
What affects the quote in Tadworth
The price is agreed before any work begins. It takes into account:
- Any mould that needs treating
- The size of the job
- The product the joint needs
- Working hours on commercial sites
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or drop us an email for an honest opinion and a quote.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The rough size of the job
- What’s wrong with the joints now
- Any access issues, like height or stairs
- Whether it’s a home or a business
Need a quote? Please call 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Places near Tadworth
More services for Tadworth
Common problems we fix in Tadworth
Timber frames move with the seasons. That movement opens up the mastic joint little by little.
Signs it’s time to call us include:
- Gaps round a timber door in stone or brick
- Patchy fillers round a sash window
- A silicone bead on a sash window that spoils the look
- Draughty sash windows at the surround
In the older streets around Church of the Good Shepherd, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before you book
- How much experience the applicator has
- What insurance they hold
- Whether the sealant suits the joint
- Whether VAT is included
Windows and doors in Tadworth
Historic houses like Fitznells Manor (about 3.9 miles north) are a reminder that the area around Tadworth 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 is traditional sand mastic. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Tadworth station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. For site and facilities teams at buildings such as Tadworth Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
Tadworth is about 3 miles south-east of Epsom, in Surrey. Wherever you are in the KT20 postcode area, our applicators can take on sand mastic. Tadworth is one of 395 places in Surrey where we work for sand mastic. There’s also a page for Crawley, roughly 13 miles from Tadworth.
Postcode districts we cover here for sand mastic: KT20 and KT18. That includes homes and businesses on Beatrice Square, High Street and Fairacres. We also cover Kingswood (1 mile south-east), Walton on the Hill (1 mile south-west), Lower Kingswood (2 miles south-east), Headley (2 miles south-west) and Mogador (3 miles south). We also work in nearby towns such as Guildford (15 miles west), Woking (15 miles west), Epsom (3 miles north-west), Horley (9 miles south), Redhill (5 miles south-east) and Ewell (4 miles north).
What’s near Tadworth
Around Tadworth, our work takes us to homes and buildings near The Beacon School, Merland Rise Recreational Ground and Inn on the Green. The closest station to Tadworth is Tadworth station, about 0.5 miles south-west. Well-known places in the area include The Ashley Centre (2.9 miles north-west) and Headley Court (2 miles west). For a walk, there’s Colley Hill and Cuddington Meadows.
What happens if it’s left?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. Homes in smaller places like Tadworth can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email.
Why us?
- We never seal over old sealant
- Rated 4.9 stars on Google
- Quality sealants from Arbo and Everbuild
- Experience in homes, commercial sites and hotels
Take a look at our cost guide or customer reviews.