Surrey · England
Farleigh Sand Mastic
Sand mastic for Farleigh and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Patchy fillers round a sash window
- Mastic that needs renewing before redecorating
- Gaps where the frame meets the masonry
When to call us in Farleigh
Sand mastic slowly weathers. It hardens, cracks and starts to come away from the frame or the masonry.
The problems people generally mention when they call include:
- Modern sealant on a period surround
- Mastic dropping out of the joint
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
If you live in an older home near Church of St Mary the Virgin, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Before you book anyone
- When the joint can take water or movement
- How the surfaces are prepared before sealing
- What guarantee comes with the work
- What happens if the job turns out different
Sand mastic in Farleigh
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On period homes, it looks right where silicone wouldn’t. We work on tenement windows, sash and case windows and brick reveals, and people most often call us about cement or filler used on old window joints that has cracked and mastic dropping out of the joint.
Mastic can only go onto a dry, clean joint, so window work in Farleigh is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, in Farleigh and everywhere else we cover.
- Where
- Farleigh (CR6)
- Wider area
- Surrey
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from Farleigh
Do you work for landlords with property near Upper Warlingham station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Is Farleigh within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Will the old sealant be removed?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
How long does sand mastic take to harden?
It forms a skin fairly soon, then hardens over a longer period. The weather and joint depth both affect it.
Is consent needed for window work on a listed home?
Check with your local planning authority. They’ll tell you if consent is needed for work to your windows.
Do you have insurance?
Yes. We’re fully insured for every job we do.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Sand mastic in Farleigh: local notes
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. With historic houses such as Addington Palace (about 2.2 miles north) nearby, there’s older building stock in the area around Farleigh as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you let a flat or house near Upper Warlingham station, cracked sand mastic around sash windows lets in the draughts tenants complain about. For site and facilities teams at buildings such as Meridian High School, its window and door frames need their mastic kept sound, just like a home’s.
Farleigh is about 4 miles north-east of Caterham, in Surrey. Homes, rented property, offices and hotels in Farleigh can book us for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. Farleigh is one of 395 places in Surrey where we work. For nearby work, see our London page (12 miles or so).
Every address in CR6 is within our area for sand mastic. Whether your property is on Farleigh Court Road and Old Farleigh Road or a nearby road, we can help. Other places close to Farleigh include Chelsham (1 mile south), Fickleshole (1 mile east), Forestdale (1 mile north), New Addington (1 mile north-east) and Hamsey Green (1 mile west). Larger places within reach include Epsom (10 miles west), Horley (12 miles south-west), Redhill (9 miles south-west), Ewell (10 miles west), Reigate (10 miles south-west) and Caterham (4 miles south-west).
Local landmarks in Farleigh
We work in homes and buildings around Ledgers Wood and the streets around them. Farleigh’s nearest station is Upper Warlingham station, roughly 2.3 miles south-west. Other landmarks nearby include Warlingham Park Hospital (0.6 miles south) and East Surrey Museum (3.7 miles south-west). Open spaces near Farleigh include Nore Hill and Hutchinson's Bank.
Landlords, agents and businesses in Farleigh
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
What the job involves on each surface
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Stone surrounds
Stone openings are rarely perfectly straight, so the joint varies in width. We shape it by hand to follow the stone.
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Nearby places to Farleigh
More services for Farleigh
What happens if it’s left?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry so renewing it early protects the window. Where a wall is exposed, as many are in small places like Farleigh, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why choose Mr Mastic in Farleigh
- More than 20 years in sealant work
- Trusted Arbo and Everbuild sealants
- 180+ five-star Google reviews
- We never seal over old sealant
Take a look at how sealant jobs are priced or customer reviews.
What affects the quote in Farleigh
There’s no set price list. What we look at:
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- Any mould that needs treating
- The size of the job
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- Roughly how big the job is
- If someone has resealed it before
- Where the job is, and your postcode
- Pictures of the joints, sent by email
Every job is quoted individually, so the first step is telling us about yours. Just phone 0345 464 0079 or drop us an email with the details, and photos are welcome.
How it works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for a single window, longer for several. For a village or hamlet like Farleigh, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Preparing for the visit
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
- Keep pets and children clear of the area while we work
Get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, ring 0345 464 0079 or email us.