Kent · England
Sand mastic for sash & case windows in Acton, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Acton. Fully insured, ARBOMaster approved and guaranteed for a year.
- Patchy fillers round a sash window
- Mastic worn away on windows facing the weather
- Mastic round period door frames that has failed
About our sand mastic in Acton
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on tenement windows, brick reveals and sash and case windows, and people most often call us about mastic round period door frames that has failed and patchy fillers round a sash window.
Outdoor sealant needs dry, clean surfaces, so work on frames around Acton is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Acton (TN30)
- Region
- Kent
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and clear up. Most jobs take a few hours per window, depending on the condition of the joints. Somewhere like Acton needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- 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
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
Getting a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.
Advice
DIY versus a professional finish
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Frames and glazing around Acton
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Smallhythe Place (about 1.5 miles north-west) are a reminder that the area around Acton has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near Parish Church of St John the Baptist, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. If you look after a building such as Wittersham Church of England Primary School, larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Appledore (Kent) station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Acton is about 10 miles south-west of Ashford, in Kent. Wherever you are in the TN30 postcode area, our applicators can take on sand mastic. Our Kent coverage runs to 922 places, Acton among them. You can also see our page for Brighton, roughly 39 miles from Acton.
Every address in TN30 is covered for sand mastic. Nearby, we also carry out sand mastic in The Stocks (1 mile south), Stone Corner (1 mile north-east), Wittersham (1 mile south-west), Reading Street (2 miles north-east) and Stone in Oxney (2 miles east). Within a short drive, we also cover Ashford (10 miles north-east), Tenterden (4 miles north), Kennington (12 miles north-east), New Romney (10 miles east), Staplehurst (12 miles north-west) and Stanhope (10 miles north-east).
Landmarks near Acton
Locally, jobs take us to homes and businesses close to The Ewe And Lamb Inn, among other places. The nearest railway station is Appledore (Kent) station, about 4.4 miles east of the centre. Other landmarks nearby include Smallhythe Place (1.5 miles north-west) and Ypres Tower (4.9 miles south). The countryside around Acton includes Flatropers Wood.
Why it’s worth doing now in Acton
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad and new mastic seals them. Older cottages and farmhouses around Acton can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, call 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
What you get with us
- Arbo and Everbuild products
- An ARBOMaster approved applicator
- 20+ years of sealant experience
- Anti-fungal sanitary silicone in wet areas
Read what affects the cost or customer reviews.
How the job changes by surface
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
Tenement and terrace windows
Upper-floor windows need access planning. Tell us the height and we’ll confirm what’s needed.
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Keep modern sealant off the mastic
- Look over the window mastic once a year
- Go gently near the mastic when preparing windows
- Leave the new mastic unpainted
Do not touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
Quotes for sand mastic in Acton
There’s no set price list. What we look at:
- Any working-time requirements on site
- The old material and how stubborn it is
- Whether there’s mould to deal with
- The product the joint needs
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Helping us quote
To help us quote quickly, let us know:
- The type of property
- Where the property is
- If someone has resealed it before
- Access, such as stairs, a lift or height
There’s no standard price list. Instead, we give you a clear price for your job. To get started, phone 0345 464 0079 or drop us an email.
When it is not the sealant
In fairness, there are a few things sealant will not fix:
- Sashes that need overhauling
- Masonry that needs repairing
- Planning or listed building consent (your local planning authority decides)
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before you book.
Joints and surfaces we work on
- Stone surrounds
- Period & listed homes
- Tenement windows
- Timber door frames
- Sash and case windows
- Brick reveals
Towns and villages near Acton
Other services in Acton
Your questions about sand mastic in Acton
I let a flat near Appledore (Kent) station. Can you help?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Can you do sand mastic in Acton?
Yes. We work across London and the South East, and Acton is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we will give you a clear quote.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We’ll tell you what we are using and why.
How long does sand mastic take to harden?
A skin forms quite soon, but full hardening takes longer. We will explain what to expect before we leave.
Can you match the sealant colour?
Generally, yes. White, clear and grey are common, and other colours are available, and we agree the colour with you before we start.
Can I paint the new mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. Then phone 0345 464 0079 or send us an email.