Kent · England
Sand mastic for sash & case windows in Eastwood, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Eastwood, backed by a 12-month guarantee. Call for a quick quote.
- Modern sealant on a period surround
- Cement or filler used on old window joints that has cracked
- Weathered mastic on the most exposed windows
Sand mastic for homes and businesses in Eastwood
On many period windows, sand mastic looks right and suits the building. Newer frames generally get a flexible sealant instead, and we’ll talk through which suits your home. We work on stone surrounds, sash and case windows and brick reveals, and common reasons people get in touch are a silicone bead on a sash window that spoils the look and gaps between timber frames and stone or brick.
Homes in small places like Eastwood often stand in the open, with little to shelter their windows from wind and rain. Exposed frames and sills lose their mastic sooner than sheltered ones.
Every job is covered by a 12-month guarantee, wherever you are in Kent.
- Place
- Eastwood (ME17)
- Region
- Kent
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Windows and doors in Eastwood
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Leeds Castle (about 3.4 miles north-west) nearby, there’s older building stock in the area around Eastwood 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.
Schools such as Ulcombe Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Harrietsham station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Eastwood is about 7 miles south-east of Maidstone, in Kent. Eastwood gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. 922 places in Kent are on our list. Our Crawley page covers work nearby (37 miles or so).
Every address in ME17 is within our area for sand mastic, from the main roads to the quietest streets. Other places close to Eastwood include Broadstone (1 mile south-east), Grafty Green (1 mile east), Ulcombe (1 mile north-west), Fairbourne Heath (1 mile north) and Liverton Street (1 mile north-east). Within a short drive, we also cover Maidstone (7 miles north-west), Ashford (10 miles south-east), Sittingbourne (10 miles north), Faversham (12 miles north-east), Kings Hill (12 miles north-west) and Davington (12 miles north-east).
Near you in Eastwood
We work in homes and buildings around The Provender Public House, among other places. For rail, the closest station is Harrietsham station, roughly 2.8 miles north of the centre. Well-known places in the area include The Dog Collar Museum (3.2 miles north-west) and Coldbridge Castle (1.6 miles east).
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
For anyone letting property in or around Eastwood, several properties can be quoted together. Send us the addresses and the work at each.
Surface by surface
Stone surrounds
The stone is treated with care when the old mastic comes out.
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.
Common questions in Eastwood
Do you cover smaller places like Eastwood?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Harrietsham station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Is sand mastic better than silicone for my windows?
That depends on your windows. Period windows in stone or brick generally suit sand mastic, while modern frames normally get a flexible sealant.
Do you guarantee sand mastic work?
Every job comes with our one-year guarantee.
What does sand mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or drop us an email with a short description of the job.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Can I paint the new mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Ask us before decorating.
What we’re called out for in Eastwood
Water gets into small cracks in the mastic and loosens it further. Windows facing the weather tend to go first.
Common reasons people contact us include:
- Mastic round period door frames that has failed
- Weathered mastic on the most exposed windows
- Cement or filler used on old window joints that has cracked
- Crumbling sand mastic round a window
Historic houses such as Leeds Castle, about 3.4 miles north-west, show how far back building around Eastwood goes, and older homes nearby need a sealant that suits their walls.
What to look for in a quote
- Whether the sealant suits the joint
- Whether VAT is included
- Whether you can choose the colour
- Are they insured?
How the visit works
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a single window, longer for several for a typical job. Somewhere as small as Eastwood, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we look at the surrounds with you and agree what needs doing.
- 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 finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Keep pets and children clear of the area while we work
- Move anything stored near the joints
Getting a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or send us an email.
Related advice
When it is not the sealant
Sealant isn’t the answer to every problem, and we’d rather say so up front. It will not solve:
- Broken panes
- Masonry that needs repairing
- Sashes that need overhauling
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
What we seal
- Tenement windows
- Timber door frames
- Brick reveals
- Period & listed homes
- Stone surrounds
- Sash and case windows
Nearby places to Eastwood
Also in Eastwood
Why act early in Eastwood
Draughts round a sash window are not always the sashes. Gaps between the frame and the wall can be just as bad, and renewing the mastic closes them. Where a wall is exposed, as many are in small places like Eastwood, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Why book with us
- Arbo and Everbuild products
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
- 20+ years of sealant experience
See what affects the cost and what customers say.
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.