Kent · England
Sand mastic for sash & case windows in Yopps Green, Kent
Sand mastic across Yopps Green and nearby, with old sealant always removed completely and a one-year guarantee.
- Weathered mastic on the most exposed windows
- Wind and rain getting in round a sash window
- Gaps between timber frames and stone or brick
How we handle sand mastic in Yopps Green
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic is the traditional choice, and we can replace one with the other. If you have modern sealant on a period surround and mastic that needs renewing before redecorating, we can put it right, whatever the surface.
In a village or hamlet like Yopps Green, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Place
- Yopps Green (TN15)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about sand mastic in Yopps Green
Can you help a landlord with a rental near Borough Green & Wrotham station?
Yes. We work for landlords and agents as well as homeowners, and several properties can go on one quote. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Can you do sand mastic in Yopps Green?
Yes. Our work covers London and the South East, and Yopps Green is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job.
Which is right for my windows, sand mastic or modern sealant?
It depends on the window. On many period windows, sand mastic looks right and suits the building and newer frames usually get a flexible sealant.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish but the decision is theirs.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
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 email us and let us know what needs doing and where.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
What guarantee comes with the work?
Our 12-month guarantee applies on every job.
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Ask a joiner to look at soft timber first
- Take care around the mastic when scraping paint
- Avoid patching sand mastic with silicone
- Don’t paint over the new mastic
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
What happens on the day
Once we are on site, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Yopps Green, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- First, we look at the surrounds with you and agree what needs doing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Keep children and pets away from the work area
- Tell us if parking is tricky
Get a quote
Need a quote? Please call 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Advice
Different surfaces, different methods
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Brick reveals
Sand mastic is also used where timber frames meet brick. It gives a traditional finish.
Towns and villages near Yopps Green
What else we do in Yopps Green
DIY versus a professional finish
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
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.
Work for landlords, hotels and businesses
Letting agents and landlords in Yopps Green can book us as well as householders. Sealant work between tenants keeps a property looking cared for.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
What affects the cost of sand mastic
We quote each job individually. These are the things that affect it:
- Access and height
- The old material and how stubborn it is
- The size of the job
- The product the joint needs
The cost reflects the work involved, not guesswork. That’s why we ask about the job first.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
We don’t publish a price list. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or send us an email.
Sand mastic in Yopps Green: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Old Soar Manor (about 1.1 miles east) nearby, there’s older building stock in the area around Yopps Green as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you let a flat or house near Borough Green & Wrotham station, older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like Plaxtol Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. For an older house near a landmark such as Plaxtol Church, the joint between an old wall and a newer frame is generally the first place rain gets in.
Yopps Green is about 5 miles north of Tonbridge, in Kent. Jobs in Yopps Green get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. We cover 922 towns and villages across Kent, large and small. There’s also a page for London, roughly 23 miles from Yopps Green.
Our applicators cover all of the TN15 postcode area for sand mastic. Streets in the area include Sheet Hill and Yopps Green, all of which we cover. Neighbouring places we cover for sand mastic include Sheet Hill (1 mile north-west), Ivy Hatch (1 mile west), Ightham (1 mile north-west), Shipbourne (1 mile south) and Oldbury (2 miles north-west). Within a short drive, we also cover Maidstone (10 miles east), Dartford (13 miles north), Sevenoaks (5 miles west), Royal Tunbridge Wells (9 miles south), Gravesend (12 miles north) and Tonbridge (5 miles south).
Local landmarks in Yopps Green
We work in homes and buildings around Ivy Hatch Nature Reserve, Wrotham School and The Plough Public House. The nearest railway station is Borough Green & Wrotham station, roughly 2 miles north of the centre. Well-known places in the area include Ightham Court (2.1 miles north) and Sevenoaks Hospital (4.6 miles west).
What we cannot put right
To be straight with you, some problems need a different trade:
- Decisions on consent for listed homes
- Sashes that rattle, stick or won’t open
- Masonry that needs repairing
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before booking.
Where we work in Yopps Green
- Period & listed homes
- Sash and case windows
- Timber door frames
- Tenement windows
- Stone surrounds
- Brick reveals