Kent · England
Tenterden Sand Mastic
Professional sand mastic in and around Tenterden, with every bit of old sealant taken out first.
- Cement or filler used on old window joints that has cracked
- Mastic dropping out of the joint
- Mastic worn away on windows facing the weather
About our sand mastic in Tenterden
Old sand mastic cracks, crumbles and falls out over time, leaving gaps round the window. We rake it out and renew it and tidies the surround. We are often asked to deal with cement or filler used on old window joints that has cracked and draughts and rain around sash boxes, on tenement windows, sash and case windows and period & listed homes.
Homes around Tenterden range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
All of our work is guaranteed for twelve months, in Tenterden and everywhere else we cover.
- Place
- Tenterden (TN30)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about sand mastic in Tenterden
Do you cover Tenterden for sand mastic?
Yes. We work across London and the South East, and Tenterden is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear quote.
Do you cover smaller places like Tenterden?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Is the work guaranteed?
All our work has a 12-month guarantee.
Can you seal over the old sealant?
No, it will not last. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
When will the new mastic be hard?
It skins over fairly quickly but takes longer to harden fully. We will explain what to expect before we leave.
How do I get a quote for sand mastic in Tenterden?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
Can I add another job to the visit?
Yes. More than one area can be quoted together.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Avoid patching sand mastic with silicone
- Take care around the mastic when scraping paint
- Have rotten timber repaired before new mastic goes in
- Check with your local planning authority if your home is listed
Leave the new mastic alone while it firms up. It skins over quickly, but takes longer to harden fully.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.
Sand mastic in Tenterden: local notes
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. With historic houses such as Smallhythe Place (about 2.2 miles south) nearby, there’s older building stock in the area around Tenterden 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.
Managing a site like Tenterden Infant School? Then its window and door frames need their mastic kept sound, just like a home’s.
Tenterden is about 9 miles south-west of Ashford, in Kent. Wherever you are in the TN30 postcode area, we cover sand mastic for homes and businesses. Our Kent coverage runs to 922 places, and Tenterden is one of them. There’s also a page for Crawley, roughly 38 miles from Tenterden.
We work across TN30 for sand mastic and the streets around it. Local streets include Golden Square, High Street and Station Road, all of which we cover. Being close to the A28 and B2067, Tenterden is simple for us to get to. Neighbouring places we cover for sand mastic include Broad Tenterden (1 mile south), St Michaels (1 mile north), Strood (2 miles west), London Beach (2 miles north) and Parkgate (2 miles north-west). Larger places within reach include Maidstone (15 miles north-west), Ashford (9 miles north-east), Paddock Wood (15 miles north-west), Bearsted (15 miles north), Park Wood (13 miles north-west) and Kennington (11 miles north-east).
Local landmarks in Tenterden
In Tenterden, that means homes and buildings near Turners Field, The Vine Inn and Homewood School and Sixth Form Centre. Nearby you will also find Tenterden and District Museum (within half a mile west) and Benenden Hospital (3.4 miles west).
What the job involves on each surface
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
Stone surrounds
Stone openings are rarely perfectly straight, so the gap is not the same all the way round. Sand mastic is shaped by hand to suit.
How it works
We keep the work tidy and contained to the area we’re working on, so you can get on with your day. Expect the work to take a few hours for a single window, longer for several. A visit to Tenterden is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us about any water getting in
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, phone 0345 464 0079 or send us an email.
Related advice
Towns and villages near Tenterden
Other services in Tenterden
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
- Rotten sashes, sills or window boxes (a joiner’s job)
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- Sash and case windows
- Stone surrounds
- Tenement windows
- Brick reveals
- Period & listed homes
- Timber door frames
What we are called out for in Tenterden
Over the years, sand mastic weathers. It hardens, cracks and starts to come away from the frame or the masonry.
If you can see any of these, it’s time to have the joints looked at:
- Mastic dropping out of the joint
- Old cement repairs round a window that have failed
- Mastic that needs renewing before redecorating
- Silicone on a period window that looks wrong
Homes close to Parish Church of St Mildred include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- Whether you can choose the colour
- Whether they seal over old material or remove it
- Whether they’re fully insured
- What preparation is included
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
A DIY attempt does not rule out a professional job. We cut it out and start again.
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- How much old sealant there is and how hard it is to remove
- Whether there’s mould to deal with
- The product the joint needs
- How easy the joints are to reach
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us and we’ll talk you through it.
Helping us quote
You don’t need to know the technical terms. Just tell us:
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
- The address or postcode of the job
- Photos by email, if that is easy
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.