Kent · England
Sand mastic for sash & case windows in Sheet Hill, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Sheet Hill. Fully insured, ARBOMaster approved and guaranteed for a year.
- Old cement repairs round a window that have failed
- Weathered mastic on the most exposed windows
- Mastic dropping out of the joint
Surface by surface
Period and listed homes
Many older homes were built with sand mastic round the windows. If your home is listed, ask your local planning authority about consent.
Stone surrounds
Stone surrounds suit sand mastic well. It finishes to look like part of the surround.
About our sand mastic in Sheet Hill
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted, so ask us before you decorate. If you’re dealing with gaps where the frame meets the masonry and old sand mastic that has cracked, crumbled or fallen out, we can put it right, whatever the surface.
Somewhere as small as Sheet Hill, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
Our work is backed for twelve months, in Sheet Hill and everywhere else we cover.
- Place
- Sheet Hill (TN15)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Aftercare tips
A little care helps the new joints last. We recommend:
- Make sure water runs off the sill
- Ask a joiner to look at soft timber first
- Avoid heavy scraping on the mastic joint
- Find out about consent before window work on a listed home
Avoid painting over the new mastic, which is the traditional advice. Ask us before any decorating around it.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber, which can lead to rot.
Sheet Hill questions
Do you work for landlords with property near Borough Green & Wrotham station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Do you cover smaller places like Sheet Hill?
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.
Is it OK to seal over old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.
How much does sand mastic cost in Sheet Hill?
Size, access and the old material all affect the cost. Call for a quick quote and we will talk you through it.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we will talk you through it.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before resealing.
The process
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The job generally takes a few hours per window, depending on the condition of the joints from start to finish. In a small place like Sheet Hill, access is normally the main thing to plan. 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.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- 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.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about parking restrictions
Ask for a quote
Every job is quoted individually. Just phone 0345 464 0079 or email us with the details, and photos are welcome.
Advice
Frames and glazing around Sheet Hill
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. Historic houses like Old Soar Manor (about 1.3 miles east) are a reminder that the area around Sheet Hill has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like Plaxtol Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near Plaxtol Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near Borough Green & Wrotham station change hands often, and any sash windows need sound mastic to keep draughts and rain out.
Sheet Hill is about 5 miles east of Sevenoaks, in Kent. Every kind of property in Sheet Hill is covered for sand mastic. Every job comes with our 12-month guarantee. Our Kent coverage runs to 922 places, and Sheet Hill is one of them. There’s also a page for London, roughly 23 miles from Sheet Hill.
Every address in TN15 is covered for sand mastic, from the main roads to the quietest streets. That includes homes and businesses on Bewley Lane and Sheet Hill. Other places close to Sheet Hill include Yopps Green (1 mile south-east), Ivy Hatch (1 mile west), Ightham (1 mile north-west), Oldbury (1 mile north-west) and Shipbourne (2 miles south). We also work in nearby towns such as Maidstone (10 miles east), Dartford (12 miles north), Sevenoaks (5 miles west), Royal Tunbridge Wells (9 miles south), Gravesend (12 miles north) and Tonbridge (5 miles south).
Local landmarks in Sheet Hill
In Sheet Hill, that means homes and buildings near Ivy Hatch Nature Reserve, Wrotham School and The Plough Public House. The closest station to Sheet Hill is Borough Green & Wrotham station, about 1.7 miles north. Nearby you’ll also find Beechin Wood Archery Museum (2 miles north-east) and Sevenoaks Hospital (4.4 miles west).
Landlords, agents and businesses in Sheet Hill
We work for landlords and letting agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Honest limits
To be straight with you, there are a few things sealant won’t fix:
- Sashes that rattle, stick or will not open
- Cracked or broken glass
- Timber that has rotted
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before booking.
Surfaces we seal
- Stone surrounds
- Sash and case windows
- Timber door frames
- Tenement windows
- Period & listed homes
- Brick reveals
Towns and villages near Sheet Hill
More services for Sheet Hill
Why deal with it now?
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. In a small place like Sheet Hill, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- We leave the area clean and tidy
- Fully insured
- ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
Read what affects the cost or what customers say.