Kent · England
Sand mastic for sash & case windows in Great Stonar, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Great Stonar, with a 12-month guarantee on every job. Ask us for a quote.
- Cement or filler used on old window joints that has cracked
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
What happens if it’s left?
Filling over old, loose mastic does not last. We remove the loose material first so the new work lasts. Around Great Stonar, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we’ll explain the quote if you ask.
Why Great Stonar customers choose us
- ARBOMaster approved applicator
- Any old sealant cut out fully, not covered over
- More than 20 years in sealant work
- Full insurance on every job
Take a look at what affects the cost or customer reviews.
Sand mastic in Great Stonar, 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 a mix of sand and a linseed-oil-based binder, applied by hand. On period homes, it looks right where silicone wouldn’t. Typical jobs include draughty sash windows at the surround and gaps round a timber door in stone or brick, across stone surrounds, period & listed homes and sash and case windows.
In a village or hamlet like Great Stonar, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
Big or small, it’s backed by our 12-month guarantee.
- Where
- Great Stonar (CT13)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlord and commercial work in Great Stonar
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
For anyone letting property in or around Great Stonar, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
How the visit works
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. In total, it generally takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Great Stonar, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic is not too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- For business premises, tell us about site rules or sign-in
How to get a quote
For sand mastic in Great Stonar, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
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Quotes for sand mastic in Great Stonar
The quote reflects the job in front of us. We take into account:
- The type of sealant required
- Whether the work is at height
- The amount of work
- Any mould that needs treating
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Any previous sealing or DIY work
- Any access issues, like height or stairs
- Whether it’s a home or a business
- The rough size of the job
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or email us with the details, and pictures are welcome.
Nearby places to Great Stonar
Other services in Great Stonar
Different surfaces, different methods
Stone surrounds
The stone is treated with care while raking out the old mastic.
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.
Can I do it myself?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
If you are 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.
How to look after the new joints
Aftercare is simple:
- Keep modern sealant off the mastic
- Inspect the joints round the windows every year or so
- Make sure water runs off the sill
- Take care around the mastic when scraping paint
Avoid painting over the new mastic, as traditional guidance advises. Ask us before any decorating around it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
FAQs for Great Stonar
Is Great Stonar within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Does the coastal weather in Great Stonar affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. Walls facing the sea are usually the first to need attention.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Do you hold any approvals?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Should I check with the council before work on a listed or conservation-area home?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What sand mastic looks like in Great Stonar
Great Stonar is within about 2 miles 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. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near St Mary's Church, the joint between an old wall and a newer frame is usually the first place rain gets in. If you let a flat or house near Sandwich station, cracked sand mastic around sash windows lets in the draughts tenants complain about. If you look after a building such as Sandwich Infant School, its window and door frames need their mastic kept sound, just like a home’s.
Great Stonar is about 5 miles south-west of Ramsgate, in Kent. Wherever you are in the CT13 postcode area, our applicators can take on sand mastic. We cover 922 towns and villages across Kent, large and small. For nearby work, see our Chelmsford page (48 miles or so).
Postcode districts we cover here for sand mastic: CT13. You’ll find streets such as Kitchener Drive, Spitfire Way and Hugin Lane, all of which we cover. Neighbouring places we cover for sand mastic include Sandwich (1 mile south), Cooper Street (2 miles west), East Street (2 miles west), Marshborough (2 miles south-west) and Woodnesborough (2 miles south-west). Within a short drive, we also cover Canterbury (11 miles west), Margate (7 miles north), Dover (10 miles south), Ramsgate (5 miles north-east), Broadstairs (6 miles north-east) and Whitstable (14 miles west).
Around Great Stonar
Typical jobs here are in homes near Prince's Beachlands, Sir Roger Manwood's School and Invicta House Ye Olde King's Arms. For rail, the closest station is Sandwich station, about 1.2 miles south. Other landmarks nearby include The Precinct Toy Collection (0.8 miles south) and Sandown Castle (4.3 miles south-east). The countryside around Great Stonar includes Monk's Wall nature reserve.