Kent · England
Sand mastic for sash & case windows in Stone Hill, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Stone Hill. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cement or filler used on old window joints that has cracked
- Mastic worn away on windows facing the weather
- Cracked mastic round a front door frame
Sand mastic for homes and businesses in Stone Hill
On many period windows, sand mastic looks right and suits the building. Newer frames generally get a flexible sealant instead, and we will talk through which suits your home. If you have tired mastic found when preparing windows for paint and failed mastic on an exposed elevation, we can put it right, whatever the surface.
Outdoor sealant needs dry, clean surfaces, so work on frames around Stone Hill is planned for dry weather. Tell us about access to every side of the house, including upper-floor windows.
Your job is guaranteed for a year, as with all our work.
- Place
- Stone Hill (TN25)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Questions from Stone Hill
Can you do sand mastic in Stone Hill?
Yes. Our work covers London and the South East, and Stone Hill is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear price.
Can you help a landlord with a rental near Westenhanger station?
Yes, landlords and agents are among the people we work for. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we’ll send you a clear quote.
Where do you work from?
We are a Crawley-based firm. We work across South East England, London and Scotland.
Do you remove the old sealant?
Yes, always, and completely. New sealant won’t bond properly to old, so the joint is cleaned back first.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or drop us an email.
Are you insured?
Yes, we are fully insured.
Do you offer different sealant colours?
Most of the time, yes. We will tell you which colours the right product comes in.
What guarantee comes with the work?
Every job comes with our 12-month guarantee.
Quotes for sand mastic in Stone Hill
The price is agreed before any work begins. It takes into account:
- Working hours on commercial sites
- Whether there’s mould to deal with
- The size of the job
- How many rooms, windows or areas are involved
Rather than a set price list, 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.
What to tell us for a quote
What to tell us when you ask for a quote:
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- Access, such as stairs, a lift or height
- The problem you’ve noticed
We don’t publish a price list, because every job is different. Instead, we send you a clear quote for your job. To arrange one, ring 0345 464 0079 or send us an email.
How it works
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before work begins. Most jobs take a few hours per window, depending on the condition of the joints. Somewhere like Stone Hill needs a little journey planning: let us know about lanes, gates and parking. 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.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Before we arrive
- Move anything stored near the joints
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
Ask for a quote
For sand mastic in Stone Hill, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Read more
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
When to call us in Stone Hill
Sand mastic slowly weathers. It dries out, cracks and loses its grip from the frame or the masonry.
These are the problems we’re asked about most:
- Gaps between timber frames and stone or brick
- Tired mastic found when preparing windows for paint
- Weathered mastic on the most exposed windows
- Crumbling sand mastic round a window
Letting a property close to Westenhanger station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- Whether they’re fully insured
- How long to leave it before use
- Which sealant they’ll use, and why
- What guarantee comes with the work
Why deal with it now?
If you’re redecorating, renew the mastic first. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. Around Stone Hill, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why choose Mr Mastic in Stone Hill
- Homes, businesses and hotels
- A 12-month guarantee on all work
- Trusted Arbo and Everbuild sealants
- Tidy, careful work
Take a look at how sealant jobs are priced and our reviews.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Have rotten timber repaired before new mastic goes in
- Renew mastic before redecorating the windows
- Inspect the joints round the windows every year or so
- Don’t paint over the new mastic
Do not touch or press the mastic while it hardens. It forms a skin fairly soon but needs longer to fully harden.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
How the job changes by surface
Stone surrounds
Old stone surrounds are often uneven, so the gap is not the same all the way round. We shape it by hand to follow the stone.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It suits older brickwork.
Windows and doors in Stone Hill
Historic houses like Westenhanger Castle (about 2.2 miles south-east) are a reminder that the area around Stone 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. 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.
Schools such as Sellindge Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s. In the older streets around Church of St Mary, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Stone Hill is about 5 miles north-west of Hythe, in Kent. For sand mastic in and around Stone Hill, please call 0345 464 0079 or send us an email for a quick quote. We cover Kent from our Crawley base, Stone Hill included. Our Kent coverage runs to 922 places, Stone Hill among them. You can also see our page for Chelmsford, about 48 miles away.
We work across the TN25 postcode area for sand mastic. That includes homes and businesses on Stone Hill, Southenay Lane and Cooper's Lane and the roads around them. If you’re just outside Stone Hill, we cover Lilyvale (1 mile north-west), Brabourne Lees (1 mile north-west), Smeeth (1 mile north-west), Ridgeway (1 mile north-west) and Bircholt Forstal (2 miles north). We also work in nearby towns such as Ashford (6 miles west), Canterbury (12 miles north), Dover (14 miles east), Folkestone (8 miles east), Faversham (15 miles north) and Hythe (5 miles south-east).
Around Stone Hill
For rail, the closest station is Westenhanger station, about 2.4 miles south-east of the centre. Other landmarks nearby include Lympne Castle (3.1 miles south-east) and William Harvey Hospital (3.8 miles north-west). Green spaces nearby include Hatch Park and Tolsford Hill.