Kent · England
Sand mastic for sash & case windows in Chart Sutton, Kent
Professional sand mastic in and around Chart Sutton, with old sealant always removed completely and a 12-month guarantee.
- A silicone bead on a sash window that spoils the look
- Weathered mastic on the most exposed windows
- Gaps where the frame meets the masonry
Common questions in Chart Sutton
Can you help a landlord with a rental near Bearsted station?
Yes, we work for letting agents and landlords. Just call 0345 464 0079 or email us and tell us about the property, and we will send you a clear quote.
Is Chart Sutton in your area for sand mastic?
Yes. We work across London and the South East, and Chart Sutton is part of that. You can call 0345 464 0079 or email us and let us know what needs doing.
Can you quote for more than one area?
Yes, we can. More than one area can be quoted together.
Should I use sand mastic or silicone?
We will talk it through with you. Sand mastic suits many period homes, and modern sealants suit newer frames.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
Is the work guaranteed?
Every job comes with our one-year guarantee, and we are fully insured.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
What’s sand mastic made of?
It’s a mix of sand and a linseed-oil-based binder. It’s built up in the joint by hand and shaped to suit the surround.
How we handle sand mastic in Chart Sutton
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. Common call-outs are for gaps where the frame meets the masonry and old sand mastic that has cracked, crumbled or fallen out, across timber door frames, period & listed homes and tenement windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around Chart Sutton is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job.
- Location
- Chart Sutton (ME17)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Also near Chart Sutton
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How the visit works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The work itself takes a few hours per window, depending on the condition of the joints from start to finish. In a small place like Chart Sutton, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- 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.
Before we arrive
- Tell us if parking is tricky
- Keep children and pets away from the work area
- For indoor joints, keep the area dry beforehand if you can
Get a quote
For a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
Advice
Should I try it myself first?
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.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
What sealant work can’t fix
We’d rather tell you now than do work that will not last, so here’s what sealant can’t put right:
- Decisions on consent for listed homes
- Damaged stone surrounds
- Timber that has rotted
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Surfaces we seal
- Brick reveals
- Timber door frames
- Tenement windows
- Stone surrounds
- Period & listed homes
- Sash and case windows
Why act early in Chart Sutton
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Around Chart Sutton, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
Why book with us
- Fully insured
- Any old sealant cut out fully, not covered over
- An ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
Signs you need sand mastic in Chart Sutton
Over the years, sand mastic weathers. It dries out, cracks and loses its grip on the stone or timber.
Common reasons people contact us include:
- Gaps round a timber door in stone or brick
- Gaps between timber frames and stone or brick
- Draughty sash windows at the surround
- Mastic worn away on windows facing the weather
Homes close to Church of St Michael include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What to look for in a quote
- Who turns up on the day
- Whether you can choose the colour
- The length of the guarantee
- What product goes in the joint
How the job changes by surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Timber door frames
A neat sand mastic joint round a front door suits a period home.
Looking after it afterwards
How long the joints last depends on use and care. Here’s what we suggest:
- Don’t run silicone over sand mastic
- Leave the new mastic unpainted
- Sort the mastic before the decorators arrive
- Inspect the joints round the windows every year or so
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Windows and doors in Chart Sutton
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. Historic houses like Stoneacre (about 2 miles north) are a reminder that the area around Chart Sutton has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Letting a property close to Bearsted station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Langley Park Primary Academy? Then larger buildings have plenty of frames, and the mastic around each one ages.
Chart Sutton is about 3 miles south-east of Maidstone, in Kent. Chart Sutton gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Kent, we cover 922 places, and Chart Sutton is one of them. We also work in London, about 34 miles from Chart Sutton.
Postcode districts we cover here for sand mastic: ME17. That includes homes and businesses on Plough Wents Road, Amber Lane and Marsham Crescent and the roads around them. Close by, we work in Wierton (1 mile south-west), Five Wents (1 mile east), Warmlake (1 mile east), Langley (1 mile north-east) and Sutton Valence (1 mile south-east). Within a short drive, we also cover Maidstone (3 miles north-west), Ashford (14 miles south-east), Sittingbourne (11 miles north-east), Royal Tunbridge Wells (14 miles south-west), Tonbridge (13 miles west) and Faversham (15 miles north-east).
What’s near Chart Sutton
Around Chart Sutton, our work takes us to homes and buildings near The Plough Inn, Cornwallis Academy and Senacre Technology College, among other places. The closest station to Chart Sutton is Bearsted station, roughly 3.6 miles north. A little further out are KIMS hospital (4.4 miles north) and The Dog Collar Museum (3.1 miles north-east).