Kent · England
Sand mastic for sash & case windows in Capel-le-Ferne, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Capel-le-Ferne, with a one-year guarantee on every job. Call for a quick quote.
- Weathered mastic on the most exposed windows
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
Sand mastic for homes and businesses in Capel-le-Ferne
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant, and we’ll talk through which suits your home. If you have old cement repairs round a window that have failed and mastic that needs renewing before redecorating, we can put it right.
Mastic can only go onto a dry, clean joint, so window work in Capel-le-Ferne is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Where
- Capel-le-Ferne (CT18)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need sand mastic in Capel-le-Ferne
Paint, silicone or cement used over old mastic causes problems. They don’t move with the timber, and they normally need raking out.
Most people get in touch when they notice one of these:
- A silicone bead on a sash window that spoils the look
- Gaps between timber frames and stone or brick
- Draughts and rain around sash boxes
- Gaps round a timber door in stone or brick
If you live in an older home near St Radigund, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- How the colour is chosen
- Whether they’re fully insured
- What guarantee comes with the work
- What preparation is included
What happens on the day
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to a full day, depending on how many windows for a typical job. In a small place like Capel-le-Ferne, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Move anything stored near the joints
- Mention any sign-in or site rules at work premises
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Advice
Capel-le-Ferne questions
I let a flat near Folkestone Central station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Does living near the coast affect sand mastic in Capel-le-Ferne?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Can old silicone round a sash window be swapped for sand mastic?
Yes. We remove the silicone and clean the joint before the sand mastic goes in.
Can I paint the new mastic?
It’s traditionally left unpainted, as guidance on traditional windows advises. Talk to us before any painting near it.
How do I get a quote for sand mastic in Capel-le-Ferne?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
What is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It’s made with sand and a linseed-oil-based binder.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
When will the new mastic be hard?
The surface skins quite quickly and it hardens fully over a longer time. The weather and joint depth both affect it.
Places near Capel-le-Ferne
More services for Capel-le-Ferne
Different surfaces, different methods
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We can do one window or several.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Sand mastic in Capel-le-Ferne: local notes
Capel-le-Ferne is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. 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.
If you look after a building such as Capel-le-Ferne Primary School, its window and door frames need their mastic kept sound, just like a home’s. For landlords with property near Folkestone Central station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Capel-le-Ferne is about 2 miles north-east of Folkestone, in Kent. If you need sand mastic in Capel-le-Ferne, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Kent, Capel-le-Ferne included. Our Kent coverage runs to 922 places, Capel-le-Ferne among them. We also work in Chelmsford, around 54 miles away.
Our applicators cover all of CT18 for sand mastic. Whether your property is on New Dover Road, Alexandra Road and Clarence Road or a nearby road, our applicators can take on the job. Neighbouring places we cover for sand mastic include Satmar (1 mile north-east), West Hougham (1 mile north-east), Drellingore (2 miles north), South Alkham (2 miles north) and Church Hougham (2 miles east). We also work in nearby towns such as Ashford (15 miles west), Canterbury (13 miles north-west), Dover (4 miles north-east), Deal (11 miles north-east), Hythe (6 miles west) and Tower Hamlets (4 miles north-east).
Around Capel-le-Ferne
Typical jobs here are in homes near East Cliff and Warren Country Park and The Valiant Sailor pub, among other places. The closest station to Capel-le-Ferne is Folkestone Central station, roughly 2.4 miles south-west. Other landmarks nearby include Folkestone Castle (2.3 miles west) and Royal Victoria Hospital (2.1 miles south-west). Green spaces nearby include Sugar Loaf Hill and Dover Western Heights.
Honest limits
In fairness, there are a few things sealant will not fix:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that rattle, stick or will not open
- Crumbling stone or brickwork round the window
If you’re not sure, just call 0345 464 0079 or send us an email and we will give you a straight answer.
Surfaces we seal
- Tenement windows
- Period & listed homes
- Stone surrounds
- Brick reveals
- Sash and case windows
- Timber door frames
Leave it or put it right?
Draughts round a sash window aren’t always the sashes. Open mastic joints round the box can let air in and new mastic seals them. In a small place like Capel-le-Ferne, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Why Capel-le-Ferne clients choose us
- We never seal over old sealant
- An ARBOMaster approved applicator
- Quality sealants from Arbo and Everbuild
- We leave the area clean and tidy
Take a look at how sealant jobs are priced and our reviews.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
Landlords, agents and businesses in Capel-le-Ferne
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
If you manage several properties in or around Capel-le-Ferne, jobs at different addresses can go on one quote. Send us the addresses and the work at each.