Kent · England
Conyer Sand Mastic
Problem with your window and door surrounds in Conyer? We cut out the old, prepare the joints and apply the right sealant.
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps where the frame meets the masonry
- Mastic round period door frames that has failed
Sand mastic for homes and businesses in Conyer
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it, so ask us before you decorate. If you have mastic dropping out of the joint and mastic worn away on windows facing the weather, we can put it right, whatever the surface.
Homes in small places like Conyer often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Your job is guaranteed for a year, as with all our work.
- Place
- Conyer (ME9)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Conyer
New sash windows are a major, costly change, and in listed buildings it may need consent. If the frames are sound, renewing the mastic deals with gaps and draughts at the surround. Where a wall is exposed, as many are in small places like Conyer, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why choose Mr Mastic in Conyer
- Over 20 years’ experience
- Tidy, careful work
- Trusted Arbo and Everbuild sealants
- ARBOMaster approved applicator
Read our cost guide or our reviews.
Common problems we fix in Conyer
Age is the main cause. Sand mastic is a maintenance item like any pointing, depending on exposure and upkeep.
People normally contact us when they notice something like this:
- Silicone on a period window that looks wrong
- Crumbling sand mastic round a window
- Gaps round a timber door in stone or brick
- Draughty sash windows at the surround
Homes close to Church of St Mary include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in.
What your quote should include
- How the joint is cleaned and prepared
- Whether VAT is included
- Who does the work, and how experienced they are
- Which colour the sealant will be
Other services in Conyer
Keeping the joints in good condition
After the cure time, these simple habits help:
- Inspect the joints round the windows every year or so
- Do not paint over the new mastic
- Avoid patching sand mastic with silicone
- Plan mastic work ahead of painting
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Work for landlords, hotels and businesses
Housing providers, facilities teams and property managers book us too in Conyer and across Kent. We can quote a run of properties together, and we are fully insured.
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Common questions in Conyer
Do you work for landlords with property near Teynham station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Will you come out to Conyer?
Yes, Conyer 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.
Can you seal over the old sealant?
No, it won’t last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Does someone need to be in?
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.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
How long does sand mastic take?
Most jobs take a few hours per window, depending on the condition of the joints. We’ll confirm how long when we quote.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Conyer homes and the weather
Conyer 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’s 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.
Letting a property close to Teynham station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Conyer is about 4 miles east of Sittingbourne, in Kent. Our applicators cover sand mastic for householders, landlords and businesses in Conyer and the surrounding area. Conyer is one of 922 places in Kent where we work. Our Chelmsford page covers work nearby (30 miles or so).
Work in ME9 is quoted and booked the same way as anywhere else. Streets in the area include North Quay and Conyer Road. Other places close to Conyer include Teynham Street (1 mile south-east), Deerton Street (1 mile south-east), Teynham (1 mile south), Norton Ash (2 miles south) and Lewson Street (2 miles south). Within a short drive, we also cover Maidstone (14 miles south-west), Ashford (15 miles south), Canterbury (12 miles south-east), Sittingbourne (4 miles west), Whitstable (9 miles east) and Faversham (4 miles south-east).
Near you in Conyer
The nearest railway station is Teynham station, roughly 1.1 miles south of the centre. Nearby you will also find Dolphin Sailing Barge Museum (3.1 miles west) and Castle Rough (2.8 miles west).
The process
When we arrive, we look over the joints with you first, so you know exactly what we are doing. Surfaces next to the work are protected before we start. Most jobs take a few hours per window, depending on the condition of the joints. For a village or hamlet like Conyer, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- 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 mastic is finished to sit tidily against the stone or brick.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Move anything stored near the joints
- Tell us about any water getting in
Get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, ring 0345 464 0079 or drop us an email.
Advice
What the job involves on each surface
Period and listed homes
A traditional finish suits a period property, and sand mastic is one of them.
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We work on single windows or whole elevations.
What we cannot put right
To be straight with you, some problems need a different trade:
- Planning or listed building consent (your local planning authority decides)
- Sashes that need overhauling
- Timber that has rotted
If in doubt, call 0345 464 0079 or email us and we’ll say what we think before you book.
Joints and surfaces we work on
- Timber door frames
- Tenement windows
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Brick reveals