Surrey · England
Chaldon Sand Mastic
Problem with your window and door surrounds in Chaldon? We cut out the old, prepare the joints and apply the right sealant.
- Tired mastic found when preparing windows for paint
- Modern sealant on a period surround
- Old cement repairs round a window that have failed
Chaldon homes and the weather
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Caterham station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like St Peter and St Paul CofE Infant School? Then its window and door frames need their mastic kept sound, just like a home’s.
Chaldon is about 1 mile south-west of Caterham, in Surrey. Jobs in Chaldon get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 395 places across Surrey, from the larger towns to small villages. Our Crawley page covers work nearby (12 miles or so).
Work in CR3 works the same way as everywhere else we cover. If you need sand mastic at a property on Mount Avenue, Linden Drive and Marshall Close or a nearby road, our applicators can take on the job. With the B2031 close by, Chaldon is simple for us to get to. If you are just outside Chaldon, we cover Netherne on-the-Hill (2 miles north-west), Merstham (2 miles west), Brewer Street (2 miles south), South Merstham (2 miles south-west) and Hooley (2 miles west). Further out, we also cover Epsom (8 miles north-west), Horley (7 miles south), Redhill (4 miles south-west), Ewell (8 miles north-west), Reigate (5 miles south-west) and Walton-on-Thames (15 miles north-west).
Landmarks near Chaldon
Locally, jobs take us to homes and businesses close to de Stafford School, Kitchen Copse and The King And Queen Public House. The closest station to Chaldon is Caterham station, about 1.2 miles east. A little further out are Bletchingley Castle (2.8 miles south) and St Lawrence's Hospital (0.5 miles north-east). Open spaces near Chaldon include South London Downs National Nature Reserve and Nore Hill.
How we handle sand mastic in Chaldon
Burnt sand mastic is a traditional material blends with stone and brick surrounds. It’s a good fit for period properties, where modern sealant can look out of place. Common call-outs are for gaps round a timber door in stone or brick and open joints round the window box, across brick reveals, sash and case windows and timber door frames.
Around Chaldon, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Big or small, it’s backed by our 12-month guarantee in Chaldon and across Surrey.
- Where
- Chaldon (CR3)
- Wider area
- Surrey
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Why deal with it now?
If you are redecorating, renew the mastic first. Paint over cracked mastic won’t stop the gaps, and the new mastic is traditionally left unpainted. In a small place like Chaldon, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why choose Mr Mastic in Chaldon
- Neat joints and a tidy finish
- Domestic, commercial and hotel work
- Full insurance on every job
- Old sealant always removed completely
Read what affects the cost and what customers say.
What affects the cost of sand mastic
The quote reflects the job in front of us. We look at:
- Access and height
- The size of the job
- The old material and how stubborn it is
- Any mould that needs treating
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will explain what it covers.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- If someone has resealed it before
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- A few pictures by email, if you can
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, ring 0345 464 0079 or drop us an email.
Different surfaces, different methods
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we’ll confirm what’s needed.
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Inspect the joints round the windows every year or so
- Don’t run silicone over sand mastic
- Don’t paint over the new mastic
- Check with your local planning authority if your home is listed
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Towns and villages near Chaldon
Also in Chaldon
Landlords, agents and businesses in Chaldon
For anyone letting property in or around Chaldon, several properties can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
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.
Questions from Chaldon
Can you help a landlord with a rental near Caterham station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can ring 0345 464 0079 or email us with the details for a clear quote.
Do you cover Chaldon for sand mastic?
Yes, Chaldon is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear quote.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Can I paint the new mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us.
Are you fully insured?
Yes. We’re fully insured.
Can you quote for more than one area?
Yes, we can. More than one area can be quoted together.
How long does sand mastic take?
It depends on the size of the job, but most jobs take a few hours for a single window, longer for several. We’ll tell you when we quote.
How it works
At the end, we look at the finished work together. The work normally takes a few hours per window, depending on the condition of the joints, depending on how much there is to do. Somewhere as small as Chaldon, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Keep children and pets away from the work area
- Clear items away from the joints we are working on
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
Signs you need sand mastic in Chaldon
Age is the main cause. Even well-laid mastic needs renewing in time, depending on exposure and upkeep.
It’s worth asking for a quote if you see:
- Weathered mastic on the most exposed windows
- Silicone on a period window that looks wrong
- Wind and rain getting in round a sash window
- Tired mastic found when preparing windows for paint
If you live in an older home near Church of St Peter and St Paul, the joint between an old wall and a newer frame is normally the first place rain gets in.
Before you book anyone
- Is VAT in the price?
- How long the guarantee is
- Which sealant they’ll use, and why
- Whether they seal over old material or remove it