Kent · England
Sand mastic for sash & case windows in Benover, Kent
We cover Benover for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
- Old sand mastic that has cracked, crumbled or fallen out
Sand mastic in Benover
Across Benover, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. We work on stone surrounds, timber door frames and sash and case windows, and the jobs we see most are old cement repairs round a window that have failed and window mastic to renew ahead of painting.
In a village or hamlet like Benover, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
You get a 12-month guarantee, the same in Benover as everywhere else we work.
- Place
- Benover (ME18)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Benover
Over the years, sand mastic weathers. It hardens, cracks and starts to come away on the stone or timber.
If you can see any of these, it’s time to have the joints looked at:
- Old sand mastic that has cracked, crumbled or fallen out
- Gaps where the frame meets the masonry
- Patchy fillers round a sash window
- Draughts and rain around sash boxes
If you look after a building such as Hunton Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages.
What your quote should include
- What happens if they find a problem under the old sealant
- Which sealant they’ll use, and why
- Whether all the old sealant comes out first
- Whether you can choose the colour
What happens if it’s left?
New sash windows are a major, costly change and on a listed home, consent may be needed. Where the frames are in good order, new mastic seals the surround. Where a wall is exposed, as many are in small places like Benover, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
Combining jobs into one visit usually makes better use of the time than several visits. We will send you a clear quote for the lot.
What you get with us
- Sanitary silicone with an anti-fungal additive in wet areas
- Full insurance on every job
- 12-month guarantee on every job
- Over 20 years’ experience
Read what affects the cost or our reviews.
Nearby places to Benover
Also in Benover
How the job changes by surface
Period and listed homes
A traditional finish suits a period property.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
How it works
On the day, we start by going over the job with you. We protect the surfaces around the joints before any work begins. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere as small as Benover, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- 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.
Before we arrive
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
- Keep children and pets away from the work area
How to get a quote
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and give you a clear price before we start.
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Benover questions
Do you work for landlords with property near Yalding station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Is Benover within the area you cover?
Yes. Benover is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
Will the old sealant be removed?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
Where do you work from?
We are based in Crawley, West Sussex, and we work across South East England, London and Scotland.
What is sand mastic?
Sand mastic is a traditional material for pointing round windows and doors. It combines sand with a linseed-oil-based binder.
Do the sealants smell?
There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.
Benover homes and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as St Peter's and St Paul's Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near Yalding station, any sash windows need sound mastic to keep draughts and rain out.
Benover is about 5 miles south-west of Maidstone, in Kent. Whether you are in the middle of Benover or further out, we cover sand mastic for every kind of property, from flats and houses to offices and hotels. Our area takes in 922 places across Kent, from the larger towns to small villages. You can also see our page for Crawley, roughly 28 miles from Benover.
We cover every part of ME18 for sand mastic and the streets around it. Other places close to Benover include Congelow (1 mile north-west), Yalding (1 mile north), Laddingford (1 mile south-west), Hunton (1 mile east) and Nettlestead Green (2 miles north-west). Larger places within reach include Maidstone (5 miles north-east), Sevenoaks (12 miles north-west), Royal Tunbridge Wells (9 miles south-west), Gravesend (15 miles north), Tonbridge (7 miles west) and Kings Hill (4 miles north).
Near you in Benover
Locally, jobs take us to homes and businesses close to The Woolpack Inn and the streets around them. The closest station to Benover is Yalding station, roughly 1.3 miles north-west of the centre. Well-known places in the area include Oakwood Hospital (4.4 miles north-east) and Teapot Island (0.9 miles north-west).
Looking after it afterwards
So the new joints stay in good condition:
- Clear gutters so water does not pour onto the windows
- Ask a joiner to look at soft timber first
- Check with your local planning authority if your home is listed
- Take care around the mastic when scraping paint
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
When something else is needed
New sealant can’t fix everything, and we’ll tell you before we start. Sealant will not put right:
- Sashes that need overhauling
- Rotten sashes, sills or window boxes (a joiner’s job)
- Decisions on consent for listed homes
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Where we work in Benover
- Brick reveals
- Stone surrounds
- Timber door frames
- Sash and case windows
- Period & listed homes
- Tenement windows
Should I try it myself first?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.