Kent · England
Sand mastic for sash & case windows in Woodlands, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Woodlands, backed by a one-year guarantee. Call for a quick quote.
- A silicone bead on a sash window that spoils the look
- Gaps where the frame meets the masonry
- Mastic that needs renewing before redecorating
About our sand mastic in Woodlands
Sand mastic has long been used to fill the joint between timber frames and masonry. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. We work on period & listed homes, brick reveals and timber door frames, and people most often call us about gaps round a timber door in stone or brick and tired mastic found when preparing windows for paint.
In a village or hamlet like Woodlands, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
We guarantee the work for a year. If something is not right with it in that time, tell us and we’ll put it right.
- Place
- Woodlands (TN15)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When it isn’t the sealant
In fairness, some problems need a different trade:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Putty and glazing repairs
- Masonry that needs repairing
If in doubt, ring 0345 464 0079 or email us and we will say what we think before you book.
Joints and surfaces we work on
- Tenement windows
- Timber door frames
- Period & listed homes
- Sash and case windows
- Brick reveals
- Stone surrounds
Common problems we fix in Woodlands
Most of it is simply age. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
The problems people usually mention when they call include:
- Failed mastic on an exposed elevation
- Mastic round period door frames that has failed
- Mastic dropping out of the joint
- Window mastic to renew ahead of painting
Rented homes near Kemsing station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- How the joint is cleaned and prepared
- What insurance they hold
- What happens if the job turns out different
- How the colour is chosen
What sand mastic looks like in Woodlands
With historic houses such as Lullingstone Castle (about 3.2 miles north-west) nearby, there’s older building stock in the area around Woodlands as well as newer homes. 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to Church of Saint Mary the Virgin include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Woodlands is about 4 miles north-east of Sevenoaks, in Kent. For sand mastic in and around Woodlands, please call 0345 464 0079 or send us an email for a quick quote. We cover Kent from our Crawley base. We cover 922 towns and villages across Kent. You can also see our page for London, about 19 miles away.
Here we cover the TN15 postcode area for sand mastic. We also cover Cotman's Ash (1 mile south-west), Knatts Valley (1 mile north), Romney Street (1 mile north-west), East Hill (1 mile north) and Heaverham (1 mile south). Within a short drive, we also cover Maidstone (13 miles east), Dartford (8 miles north), Sevenoaks (4 miles south-west), Royal Tunbridge Wells (13 miles south), Gravesend (9 miles north-east) and Tonbridge (9 miles south).
Around Woodlands
Locally, jobs take us to homes and businesses close to The Rising Sun pub and Kemsing Down. For rail, the closest station is Kemsing station, roughly 1.8 miles south. Nearby you’ll also find Sevenoaks Hospital (3.3 miles south-west) and Kemsing Castle Bank (1.4 miles south-west).
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Sort the mastic before the decorators arrive
- Check the mastic when you check the paintwork
- Avoid patching sand mastic with silicone
- Make sure water runs off the sill
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
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 chosen for how the joint moves and where it is.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Surface by surface
Period and listed homes
Materials matter on listed and conservation-area homes. Like-for-like sand mastic is generally favoured.
Stone surrounds
Stone surrounds suit sand mastic well. The finish blends with the masonry.
Woodlands questions
Can you help a landlord with a rental near Kemsing station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Do you cover smaller places like Woodlands?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
How long does sand mastic take to go off?
A skin forms quite soon, but full hardening takes longer. We’ll tell you what to expect for your job.
Can you quote for more than one area?
Yes. Just list everything you need and we’ll quote it together.
Should I check with the council before work on a listed or conservation-area home?
Check with your local planning authority. They’ll tell you if consent is needed for work to your windows.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
What happens on the day
There isn’t much for you to do on the day. Show us the job and we will take it from there. The job generally takes anything from a few hours to a full day, depending on how many windows, including the tidy-up. Somewhere as small as Woodlands, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- For business premises, tell us about site rules or sign-in
- Tell us about any water getting in
- Keep children and pets away from the work area
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or email us and describe the job.
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Places near Woodlands
What else we do in Woodlands
Landlord and commercial work in Woodlands
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.