Kent · England
Sand Mastic in Teynham
Our applicators work in Teynham on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.
- A silicone bead on a sash window that spoils the look
- Draughty sash windows at the surround
- Failed mastic on an exposed elevation
Sand mastic in Teynham: local notes
Teynham is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. With historic houses such as Belmont House and Gardens (about 4.4 miles south-east) nearby, there’s older building stock in the area around Teynham as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
In the older streets around Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Teynham station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
Teynham is about 3 miles east of Sittingbourne, in Kent. Jobs in Teynham get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 922 places in Kent are on our list. For nearby work, see our Chelmsford page (31 miles or so).
Postcode districts we cover here for sand mastic: ME9. If you need sand mastic at a property on Station Road, London Road and Belle Friday Close or a nearby road, we can help. Nearby, we also carry out sand mastic in Teynham Street (1 mile north-east), Deerton Street (1 mile east), Norton Ash (1 mile south-east), Lewson Street (1 mile south-east) and Tickham (1 mile south). Further out, we also cover Maidstone (13 miles west), Ashford (13 miles south), Canterbury (13 miles east), Sittingbourne (3 miles west), Whitstable (10 miles east) and Faversham (4 miles east).
Local landmarks in Teynham
Locally, jobs take us to homes and businesses close to Sittingbourne Community College and The Dover Castle pub, among other places. Teynham has its own railway station: Teynham station. A little further out are Bayford Court (2.8 miles west) and Sittingbourne Heritage Museum (2.7 miles west).
Sand mastic in Teynham, done properly
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. We work on stone surrounds, sash and case windows and tenement windows, and the jobs we see most are failed mastic on an exposed elevation and old cement repairs round a window that have failed.
Around Teynham, conservatories, garden rooms and patio doors are often part of the house. Those joints need the same attention as the main windows.
You are covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or send us an email.
- Place
- Teynham (ME9)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Avoid patching sand mastic with silicone
- Renew mastic before redecorating the windows
- Ask a joiner to look at soft timber first
- Ask us before painting near the mastic
Leave the new mastic unpainted, which is the traditional advice. If you are redecorating, ask us first.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
What happens on the day
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 anything from a few hours to a full day, depending on how many windows. For a job in Teynham, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
Preparing for the visit
- Tell us about any water getting in
- Let us know about stairs, lifts or work at height
- Plan for the work area to be out of bounds to pets and children
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, call 0345 464 0079 or send us an email.
Related advice
What the job involves on each surface
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Brick reveals
Loose mastic comes out and deep gaps are packed before the new mastic goes in.
Landlords, agents and businesses in Teynham
In hotels, rooms out of use cost money, so we plan the work room by room. We’ve worked in hotels as well as homes and businesses.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Towns and villages near Teynham
Also in Teynham
Your questions about sand mastic in Teynham
Do you cover smaller places like Teynham?
Yes, Teynham is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Teynham station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Is it messy?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do I have to be there?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
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.
Can old silicone round a sash window be swapped for sand mastic?
Yes, it’s a common request. All the old silicone is removed first so the mastic can sit properly.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Should I try DIY first?
You can, for simple jobs. 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.
When something else is needed
Sealant isn’t the answer to every problem, and we’d rather say so up front. It will not solve:
- Crumbling stone or brickwork round the window
- Whether work needs listed building consent
- Timber that has rotted
If you’re not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
What we seal
- Tenement windows
- Sash and case windows
- Brick reveals
- Period & listed homes
- Stone surrounds
- Timber door frames
Common problems we fix in Teynham
Some old mastic was never deep enough. A thin layer does not hold well, which is why we pack deep voids first and get the depth right.
Most people get in touch when they notice something like this:
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
- A silicone bead on a sash window that spoils the look
- Weathered mastic on the most exposed windows
For site and facilities teams at buildings such as Teynham Parochial Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- How the surfaces are prepared before sealing
- Whether they seal over old material or remove it
- Whether you can choose the colour
- Which sealant they’ll use, and why