Kent · England
Sand mastic for sash & case windows in Eccles, Kent
Sand mastic across Eccles and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- A silicone bead on a sash window that spoils the look
- Mastic that needs renewing before redecorating
- Cement or filler used on old window joints that has cracked
Sand mastic in Eccles
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, applied by hand. On period homes, it looks right where silicone wouldn’t. We work on brick reveals, stone surrounds and period & listed homes, and people most often call us about window mastic to renew ahead of painting and wind and rain getting in round a sash window.
Around Eccles, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
You’re covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Place
- Eccles (ME20)
- Wider area
- Kent
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Keep sills and gutters clear so water drains away
- Look over the window mastic once a year
- Keep modern sealant off the mastic
- Avoid heavy scraping on the mastic joint
Avoid painting over the new mastic, as traditional guidance advises. 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 we can’t put right
Before booking, it’s worth knowing the limits:
- Crumbling stone or brickwork round the window
- Sash cords, weights and draught-proofing of the sashes
- Decisions on consent for listed homes
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly.
What we seal
- Sash and case windows
- Stone surrounds
- Brick reveals
- Tenement windows
- Period & listed homes
- Timber door frames
Places near Eccles
Also in Eccles
What we’re called out for in Eccles
Most of it is simply age. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
These are the problems we are asked about most:
- Crumbling sand mastic round a window
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
- Patchy fillers round a sash window
Homes close to Church of St Peter and St Paul include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Comparing quotes
- Whether you can choose the colour
- Who turns up on the day
- Whether they seal over old material or remove it
- What guarantee comes with the work
Landlord and commercial work in Eccles
In hotels, rooms out of use cost money, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
Windows and doors in Eccles
With historic houses such as Starkey Castle (about 3.2 miles north) nearby, there’s older building stock in the area around Eccles 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. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as St Mark's Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near New Hythe station, any sash windows need sound mastic to keep draughts and rain out.
Eccles is about 3 miles south-west of Chatham, in Kent. Across the ME20 area, we can carry out sand mastic at your property. Across Kent, we cover 922 places, and Eccles is one of them. We also work in London, around 28 miles away.
Work in ME20 works the same way as everywhere else we cover. If you need sand mastic at a property on Bull Lane, Springett Close and Jenner Way or anywhere close by, we can help. We also cover the places around Eccles: Burham (1 mile north), Pratling Street (1 mile south-east), Forstal (1 mile south-east), New Hythe (1 mile south-west) and Scarborough (2 miles north). Further out, we also cover Maidstone (4 miles south-east), Sittingbourne (11 miles east), Dartford (14 miles north-west), Sevenoaks (13 miles west), Gravesend (9 miles north-west) and Tonbridge (12 miles south-west).
Landmarks near Eccles
Typical jobs here are in homes near Burham Marsh, The Red Bull Public House and Aylesford School, among other places. For rail, the closest station is New Hythe station, roughly 1.1 miles south-west. Well-known places in the area include Fremlin Walk (3.5 miles south-east) and Allington Castle (2.2 miles south-east). For a walk, there’s Burham Down and Blue Bell Hill.
Your questions about sand mastic in Eccles
Will you come out to Eccles?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near New Hythe station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll advise.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Where is Mr Mastic based?
We work from Crawley. We cover Eccles and the rest of Kent, along with the rest of our area.
Is it possible to take out silicone and use sand mastic instead?
Yes, we do this often. All the old silicone is removed first so the mastic can sit properly.
Can new sealant go over the old?
No, and we never do. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
How it works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours per window, depending on the condition of the joints, and the area is left clean. For a village or hamlet like Eccles, 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 the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Clear items away from the joints we are working on
- Let us know about parking restrictions
How to get a quote
If you are in Eccles and need sand mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Advice
Quotes for sand mastic in Eccles
For a quick quote, just ask. What matters most is:
- The old material and how stubborn it is
- Whether the work is at height
- Which sealant suits the joint
- The number of rooms or windows
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Whether it has been sealed before
- The type of property
- Photos by email, if that is easy
- Access, such as stairs, a lift or height
Want a quote for sand mastic? Please call 0345 464 0079 or drop us an email and tell us about the job. We will explain what we’d do and send you a clear quote before work begins.
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.