Kent · England
Sand mastic for sash & case windows in Swattenden, Kent
Sand mastic across Swattenden and nearby, with every bit of old sealant taken out first.
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- A silicone bead on a sash window that spoils the look
How we quote for sand mastic
The quote reflects the job in front of us. We look at:
- Any mould that needs treating
- Whether the work is at height
- How many rooms, windows or areas are involved
- Which sealant suits the joint
Homes and businesses are quoted the same way: the amount of work, the access and the products needed. Ask us for a quote and we’ll go through it with you.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Photos by email, if that is easy
- How we’d reach the joints
- Whether it has been sealed before
- What’s wrong with the joints now
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or email us and describe the job, and pictures are welcome.
About our sand mastic in Swattenden
Old sand mastic cracks, crumbles and falls out over time and gaps open up round the frame. Renewing it closes the gap so the surround looks right again. We work on stone surrounds, tenement windows and brick reveals, and people most often call us about old cement repairs round a window that have failed and silicone on a period window that looks wrong.
In a village or hamlet like Swattenden, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
Every job comes with a one-year guarantee, wherever you are in Kent.
- Place
- Swattenden (TN17)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Frames and glazing around Swattenden
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.
For an older house near a landmark such as Congregational Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Schools such as Cranbrook School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Swattenden is about 12 miles east of Royal Tunbridge Wells, in Kent. Whether you are in the middle of Swattenden or further out, we cover sand mastic for every kind of property. Across Kent, we cover 922 places, and Swattenden is one of them. We also work in Crawley, about 31 miles from Swattenden.
All of TN17 is within our area for sand mastic. Other places close to Swattenden include Hartley (1 mile west), Cranbrook (1 mile north), Baker's Cross (1 mile north-east), Coursehorn (1 mile north-east) and Gill's Green (2 miles south-west). Further out, we also cover Maidstone (13 miles north), Ashford (15 miles east), Royal Tunbridge Wells (12 miles west), Tonbridge (14 miles north-west), Kings Hill (14 miles north) and Foley Park (14 miles north).
Local landmarks in Swattenden
We work in homes and buildings around Duke Of York Public House Little Tudor and Crane Valley. Nearby you will also find Sissinghurst Castle (3.2 miles north-east) and Benenden Hospital (3.9 miles east).
Towns and villages near Swattenden
Also in Swattenden
Landlords, agents and businesses in Swattenden
Letting agents and landlords in Swattenden can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
DIY versus a professional finish
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
How the visit works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes anything from a few hours to a full day, depending on how many windows, and the area is left clean. In a small place like Swattenden, access is usually the main thing to plan. 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.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Clear the area around the work
- Let us know if you’ve seen damp or leaks
- Keep pets and children clear of the area while we work
Ask for a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To get started, phone 0345 464 0079 or drop us an email.
Read more
Surface by surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We work on single windows or whole elevations.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Why it’s worth doing now in Swattenden
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. Around Swattenden, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Combining jobs into one visit is usually more efficient than separate visits. You’ll get one clear quote for the whole job.
Why book with us
- A 12-month guarantee on all work
- Neat joints and a tidy finish
- Approved under the ARBOMaster scheme
- Arbo and Everbuild products
Take a look at what affects the cost and what customers say.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Leave the new mastic unpainted
- Ask a joiner to look at soft timber first
- Ask the planning authority about consent for listed or conservation-area homes
- Keep modern sealant off the mastic
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Small cracks are a sign the mastic is ageing. Renewing it then is simpler than waiting until it falls out.
Questions from Swattenden
Do you cover Swattenden for sand mastic?
Yes, Swattenden is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Do you cover smaller places like Swattenden?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Will there be a smell?
Possibly a little. It fades as the sealant cures, and ventilation helps.
How long does sand mastic take?
That depends on the amount of work, but most jobs take anything from a few hours to a full day, depending on how many windows. We’ll give you a better idea when we quote.
How much does sand mastic cost in Swattenden?
It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or drop us an email with a short description of the job.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Can I add another job to the visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
Do I need to be at home?
That depends on where the joints are. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.