Kent · England
Sand mastic for sash & case windows in Sandling, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for householders, landlords and businesses in Sandling. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Draughts and rain around sash boxes
- Cracked mastic round a front door frame
- Gaps between timber frames and stone or brick
Surface by surface
Sash and case windows
The mastic round a sash window is on show, so a neat, even finish matters.
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Sand mastic in Sandling
Traditional burnt sand mastic blends with stone and brick surrounds. It suits period and listed homes, where modern sealant can look out of place. We are often asked to deal with patchy fillers round a sash window and gaps where the frame meets the masonry, across timber door frames, sash and case windows and tenement windows.
Homes in small places like Sandling often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
Big or small, you get the same one-year guarantee in Sandling and across Kent.
- Place
- Sandling (CT21)
- Region
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Sandling homes and the weather
Sandling is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. With historic houses such as Westenhanger Castle (about 1.6 miles west) nearby, there’s older building stock in the area around Sandling 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.
For an older house near a landmark such as Church of St Peter and St Paul, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Rented homes near Sandling station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Sandling is about 1 mile north-west of Hythe, in Kent. Homes, rented property, offices and hotels in Sandling is covered for sand mastic. The work is guaranteed for a year. Across Kent, we cover 922 places, Sandling among them. Chelmsford is on our list too, about 51 miles from Sandling.
All of CT21 is covered for sand mastic, from the main roads to the quietest streets. Other places close to Sandling include Saltwood (1 mile south-east), Pedlinge (1 mile south-west), Hythe (1 mile south-east), Westenhanger (1 mile west) and Newingreen (1 mile west). We also work in nearby towns such as Ashford (9 miles north-west), Canterbury (13 miles north), Dover (11 miles east), Folkestone (4 miles east), Tower Hamlets (11 miles east) and Hawkinge (4 miles north-east).
What’s near Sandling
In Sandling, that means homes and buildings near St Augustine's Catholic Primary School and Brockhill Country Park and the streets around them. Sandling has its own railway station: Sandling station. A little further out are Saltwood Castle (0.9 miles south-east) and Hythe Museum (1.4 miles south-east). For a walk, there’s Tolsford Hill.
Also near Sandling
More services for Sandling
Quotes for sand mastic in Sandling
We do not publish a price list, because jobs vary so much. What we look at:
- How much old sealant there is and how hard it is to remove
- The product the joint needs
- The number and length of the joints
- Whether the work is at height
Combining jobs into one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
Asking for a quote
When you contact us, it’s useful to know:
- The rough size of the job
- Photos by email, if that is easy
- Any access issues, like height or stairs
- The type of property
Need a quote? Please ring 0345 464 0079 or email us with a few details. We will explain what we’d do and send you a clear quote before any work starts.
Honest limits
We’d rather tell you now than do work that won’t last, so these are the limits:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that rattle, stick or will not open
- Whether work needs listed building consent
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer before you book.
Surfaces we seal
- Tenement windows
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Timber door frames
- Brick reveals
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
What we’re called out for in Sandling
Some old mastic was never deep enough. A thin layer doesn’t hold well so we make sure the new mastic is the right thickness.
The problems people usually mention when they call are:
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic round period door frames that has failed
- Tired mastic found when preparing windows for paint
- Old cement repairs round a window that have failed
Managing a site like Brockhill Park Performing Arts College? Then the mastic around its windows and doors needs looking after like any other building’s.
Before you book anyone
- Who does the work, and how experienced they are
- Whether VAT is included
- How long the guarantee is
- What happens if the job turns out different
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Sort the mastic before the decorators arrive
- Inspect the joints round the windows every year or so
- Find out about consent before window work on a listed home
- Don’t run silicone over sand mastic
Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.
It’s best to renew mastic before painting the windows. Painting over failed mastic hides the problem for a while.
Sandling: your questions answered
Do you work for landlords with property near Sandling station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or email us and tell us about the property, and we’ll send you a clear quote.
Will you come out to Sandling?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can I choose the sealant colour?
Normally, yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before we start.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme.
Is the work guaranteed?
Every job comes with our 12-month guarantee, and we’re fully insured.
Do I need permission for sand mastic on a listed building?
Check with your local planning authority. They’ll tell you if consent is needed for work to your windows.
How long does sand mastic take to go off?
It skins over fairly quickly but takes longer to harden fully. We will tell you what to expect for your job.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or drop us an email.
How the visit 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 we start. Most jobs take anything from a few hours to a full day, depending on how many windows. Somewhere like Sandling needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
- Let us know about parking restrictions
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.