Kent · England
Sand mastic for sash & case windows in Cheriton, Kent
We cover Cheriton for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Mastic that needs renewing before redecorating
- Draughts and rain around sash boxes
- Modern sealant on a period surround
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Cheriton and across Kent. Several sites can be quoted together, and we are fully insured for the work.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
How we handle sand mastic in Cheriton
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. Typical jobs include window mastic to renew ahead of painting and gaps round a timber door in stone or brick, across sash and case windows, period & listed homes and brick reveals.
Houses in smaller places like Cheriton can stand more in the open than those in a built-up town. That’s hard on the mastic around frames and sills.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Cheriton (CT19, CT20, CT50)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
The process
You do not need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the work takes a few hours for a single window, longer for several in most cases. Parking around Cheriton is normally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Tell us about any water getting in
- Clear items away from the joints we are working on
- Tell us about any previous sealing or DIY attempts
How to get a quote
To get a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before we start.
Read more
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Keep modern sealant off the mastic
- Ask the planning authority about consent for listed or conservation-area homes
- Sort the mastic before the decorators arrive
- Check the mastic when you check the paintwork
Avoid painting over the new mastic, which is the traditional advice. If you’re redecorating, ask us first.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
What sealant work cannot fix
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Damaged stone surrounds
- Putty and glazing repairs
- Sash cords, weights and draught-proofing of the sashes
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Where we work in Cheriton
- Timber door frames
- Tenement windows
- Stone surrounds
- Sash and case windows
- Brick reveals
- Period & listed homes
How the job changes by surface
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Other services in Cheriton
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What we are called out for in Cheriton
Previous repairs in cement or silicone often trap water or crack away. They don’t move with the timber, and they normally need raking out.
Common reasons people contact us include:
- Draughts and rain around sash boxes
- Crumbling sand mastic round a window
- Open joints round the window box
- Mastic that needs renewing before redecorating
For landlords with property near Folkestone West station, older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- What happens if they find a problem under the old sealant
- The length of the guarantee
- Whether you can choose the colour
- What insurance they hold
Frames and glazing around Cheriton
Cheriton is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. With historic houses such as Acrise Place (about 3.4 miles north) nearby, there’s older building stock in the area around Cheriton as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
For an older house near a landmark such as Church of All Souls, the joint between an old wall and a newer frame is generally the first place rain gets in. Managing a site like All Soul's Church of England Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Cheriton is about 1 mile west of Folkestone, in Kent. Our applicators cover sand mastic for homes and businesses in Cheriton, as part of our work across Kent. Across Kent, we cover 922 places, Cheriton among them. We also work in Chelmsford, around 53 miles away.
Every address in CT19, CT20 and CT50 is within our area for sand mastic, from the main roads to the quietest streets. We cover properties on Oaks Road, Firs Lane and Star Lane. Being close to the M20, Cheriton is easy for our applicators to reach. Close by, we work in Sandgate (1 mile south), Folkestone (1 mile east), Peene (1 mile north-west), Newington (1 mile west) and Arpinge (1 mile north). Further out, we also cover Ashford (12 miles west), Canterbury (13 miles north), Dover (8 miles north-east), Deal (14 miles north-east), Hythe (3 miles south-west) and Tower Hamlets (7 miles east).
What’s near Cheriton
Around Cheriton, our work takes us to homes and buildings near The Folkestone Academy, Lower Leas Coastal Park and White Lion pub, among other places. Cheriton’s nearest station is Folkestone West station, roughly 0.6 miles south-east. Nearby you will also find Sandgate Castle (1 mile south) and Elham Valley Countryside Centre And Railway Museum (1.3 miles north-west). Green spaces nearby include Sugar Loaf Hill.
Cheriton questions
Is Cheriton within the area you cover?
Yes, Cheriton is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
I let a flat near Folkestone West station. Can you help?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Are you insured?
Yes. We are fully insured.
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.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They decide whether consent is needed for work to your windows.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Do you remove the old sealant?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.