Kent · England
Sheldwich Lees Sand Mastic
Problem with your window and door surrounds in Sheldwich Lees? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Mastic worn away on windows facing the weather
- Draughts and rain around sash boxes
- Patchy fillers round a sash window
Sand mastic in Sheldwich Lees
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 and built up by hand. On older homes, it suits the building far better than silicone. Common call-outs are for draughts and rain around sash boxes and mastic round period door frames that has failed, across tenement windows, period & listed homes and brick reveals.
In a village or hamlet like Sheldwich Lees, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Sheldwich Lees (ME13)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for sand mastic
You will get a clear quote before work begins. It’s based on:
- How many rooms, windows or areas are involved
- The type of sealant required
- Any mould that needs treating
- The amount of work
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Helping us quote
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
- Where the property is
- If it’s domestic, commercial or a hotel
- Photos by email, if that is easy
It all starts with a short chat. Describe the problem, the location and the size of the job. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Ask a joiner to look at soft timber first
- Look over the window mastic once a year
- Do not paint over the new mastic
- Ask the planning authority about consent for listed or conservation-area homes
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Also near Sheldwich Lees
Also in Sheldwich Lees
The process
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a single window, longer for several. Somewhere like Sheldwich Lees needs a little journey planning: 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.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Preparing for the visit
- Tell us if parking is tricky
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
Ask for a quote
We do not publish a price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To get started, phone 0345 464 0079 or drop us an email.
Advice
What the job involves on each surface
Sash and case windows
On a sash window, the mastic joint shows on the outside so we finish it carefully.
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is generally favoured.
Leave it or put it right?
Silicone might seem the quicker option, but on period stone or brick it often looks out of place. Sand mastic suits the building and finishes neatly against the masonry. Where a wall is exposed, as many are in small places like Sheldwich Lees, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Why choose Mr Mastic in Sheldwich Lees
- One-year guarantee on every job
- Anti-fungal sanitary silicone in wet areas
- Experience in homes, commercial sites and hotels
- We leave the area clean and tidy
Read our cost guide and what customers say.
Landlords, agents and businesses in Sheldwich Lees
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
What we are called out for in Sheldwich Lees
Age is the main cause. Sand mastic is a maintenance item like any pointing and how long it lasts depends on the weather it faces.
Any of these means the joints need attention:
- Gaps where the frame meets the masonry
- Cracked mastic round a front door frame
- Cement or filler used on old window joints that has cracked
- Window mastic to renew ahead of painting
Managing a site like Sheldwich Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- When the joint can take water or movement
- What the quote includes, VAT included or not
- Whether they’re fully insured
- Whether all the old sealant comes out first
Your questions about sand mastic in Sheldwich Lees
Do you cover smaller places like Sheldwich Lees?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Selling station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
How long does sand mastic take to go off?
A skin forms quite soon, but full hardening takes longer. We’ll tell you what to expect for your job.
How much does sand mastic cost in Sheldwich Lees?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Is there any odour?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. Our applicators cover Sheldwich Lees.
Can you work on commercial sites?
Yes, regularly. We can plan bigger jobs in stages.
What exactly is sand mastic?
Sand plus a binder based on linseed oil. It’s built up in the joint by hand and finished to sit neatly against the masonry.
What sand mastic looks like in Sheldwich Lees
With historic houses such as Belmont House and Gardens (about 1.7 miles west) nearby, there’s older building stock in the area around Sheldwich Lees as well as newer homes. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
In the older streets around Church of St James, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to Selling station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Sheldwich Lees is about 3 miles south of Faversham, in Kent. From the centre of Sheldwich Lees to the outskirts, sand mastic is available for homes and businesses alike. Across Kent, we cover 922 places, and Sheldwich Lees is one of them. For nearby work, see our Chelmsford page (37 miles or so).
Work in ME13 works the same way as everywhere else we cover. We also cover Sheldwich (1 mile north-west), Badlesmere (1 mile south), North Street (1 mile north), Throwley (1 mile west) and Throwley Forstal (2 miles south-west). We also work in nearby towns such as Ashford (9 miles south), Canterbury (8 miles east), Sittingbourne (8 miles north-west), Whitstable (8 miles north-east), Faversham (3 miles north) and Herne Bay (13 miles north-east).
What’s near Sheldwich Lees
For rail, the closest station is Selling station, about 2.4 miles east of the centre. Nearby you’ll also find Tower keep castle at Chilham (3.7 miles south-east).