Kent · England
Sand mastic for sash & case windows in South Green, Kent
Sand mastic for South Green and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Old sand mastic that has cracked, crumbled or fallen out
- Draughty sash windows at the surround
- A silicone bead on a sash window that spoils the look
About our sand mastic in South Green
Across South Green, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand, finished to suit the masonry. If you are dealing with gaps round a timber door in stone or brick and silicone on a period window that looks wrong, we can help, on period & listed homes, brick reveals and stone surrounds alike.
Homes in small places like South Green 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.
There’s a 12-month guarantee on every job, large or small.
- Location
- South Green (ME9)
- Region
- Kent
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Landlords, agents and businesses in South Green
If you manage several properties in or around South Green, several properties can go on one quote. Send us the addresses and the work at each.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
How the visit 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 we leave things clean and tidy. For a village or hamlet like South Green, 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 look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Mention any leaks or damp you’ve noticed
- Mention any tricky access
- Mention if the joints have been sealed before
Get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you’re ready, ring 0345 464 0079 or send us an email.
Advice
South Green homes and the weather
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. Historic houses like Leeds Castle (about 4.4 miles south) are a reminder that the area around South Green has older buildings as well as new. 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.
If you live in an older home near St Mary Magdalene Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Newington station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
South Green is about 4 miles south-west of Sittingbourne, in Kent. We carry out sand mastic for homes and businesses in South Green and nearby. Across Kent, we cover 922 places, and South Green is one of them. We also work in Chelmsford, around 30 miles away.
All of ME9 is within our area for sand mastic, from the main roads to the quietest streets. We also cover the places around South Green: Stockbury (1 mile north-west), Oad Street (2 miles north-east), Silver Street (2 miles east), Bredgar (2 miles east) and Danaway (2 miles north-east). We also work in nearby towns such as Maidstone (6 miles south-west), Ashford (15 miles south-east), Sittingbourne (4 miles north-east), Gravesend (14 miles north-west), Faversham (10 miles east) and Minster (10 miles north-east).
Around South Green
Typical jobs here are in homes near Stockbury Hill Wood and The Three Squirrels pub, among other places. The nearest railway station is Newington station, roughly 3 miles north. Nearby you’ll also find Leeds Castle (4.4 miles south) and KIMS hospital (4.5 miles west). Open spaces near South Green include Detling Hill.
FAQs for South Green
Do you cover smaller places like South Green?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is South Green in your area for sand mastic?
Yes. Our work covers London and the South East, and South Green is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Can you match the sealant colour?
We help you choose a colour that suits. The product needed can limit the range.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover South Green and the rest of Kent.
Can I add another job to the visit?
Of course. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
Is it possible to paint over sand mastic?
It’s traditionally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
Should I check with the council before work on a listed or conservation-area home?
Your local planning authority is the one to ask. They’ll tell you if consent is needed.
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Avoid heavy scraping on the mastic joint
- Renew mastic before redecorating the windows
- Do not run silicone over sand mastic
- Keep sills and gutters clear so water drains away
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall, so renewing it early is worth it.
How we quote for sand mastic
Your quote is based on your job. We take into account:
- Whether there’s mould to deal with
- How much there is to do
- Working hours on commercial sites
- How easy the joints are to reach
The cost reflects the work involved, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Asking for a quote
Before you ask for a quote, have a think about:
- The rough size of the job
- Where the job is, and your postcode
- Whether it has been sealed before
- Any access issues, like height or stairs
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
When something else is needed
We’d rather tell you now than do work that won’t last, so these are the limits:
- Timber that has rotted
- Putty and glazing repairs
- Sash cords, weights and draught-proofing of the sashes
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
What we seal
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Timber door frames
- Brick reveals
- Tenement windows
Nearby places to South Green
Other services in South Green
Surface by surface
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
Leave it or put it right?
An open joint round the frame lets weather in. Left, water can reach the timber and the wall so renewing it early protects the window. Older cottages and farmhouses around South Green can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. We will give you a clear price for the lot.
What you get with us
- Every job guaranteed for a year
- Old sealant always removed completely
- Anti-fungal sanitary silicone in wet areas
- ARBOMaster approved applicator