Kent · England
Sand mastic for sash & case windows in Capel, Kent
Professional sand mastic in and around Capel, with old sealant always removed completely and a one-year guarantee.
- Patchy fillers round a sash window
- Draughts and rain around sash boxes
- Gaps where the frame meets the masonry
Why it’s worth doing now in Capel
Filling over old, loose mastic does not last. We remove the loose material first so the new work lasts. In a small place like Capel, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why Capel customers choose us
- ARBOMaster approved applicator
- Fully insured
- Trusted Arbo and Everbuild sealants
- A 12-month guarantee on all work
Sand mastic for homes and businesses in Capel
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. If you’re dealing with open joints round the window box and weathered mastic on the most exposed windows, we can put it right.
Somewhere as small as Capel, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
Big or small, it’s backed by our one-year guarantee in Capel and across Kent.
- Place
- Capel (TN12)
- Wider area
- Kent
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Other services in Capel
What we do, step by step
We work through the job in order: protection first, then preparation, sealing and a tidy-up. Typically it takes anything from a few hours to a full day, depending on how many windows, and the area is left clean. For a village or hamlet like Capel, 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.
- We look at the surrounds with you and agree the joints to renew.
- Old mastic and any loose material are raked out.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Keep pets and children clear of the area while we work
Getting a quote
Every job is quoted individually. Simply ring 0345 464 0079 or email us and describe the job.
Read more
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 matched to the joint and its conditions.
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
What sand mastic looks like in Capel
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Paddock Wood station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Capel Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Capel is about 3 miles south-east of Tonbridge, in Kent. Capel gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Capel is one of 922 towns and villages in Kent where we work. Our Crawley page covers work nearby (24 miles or so).
All of TN12 is within our area for sand mastic. That includes homes and businesses on Redwood Park, Alders Road and Church Lane and the roads around them. Neighbouring places we cover for sand mastic include Five Oak Green (1 mile north-east), Colt's Hill (1 mile east), Crockhurst Street (1 mile west), Tudeley (1 mile north-west) and Tudeley Hale (2 miles north-west). Further out, we also cover Maidstone (10 miles north-east), Sevenoaks (10 miles north-west), Royal Tunbridge Wells (4 miles south-west), Tonbridge (3 miles north-west), Kings Hill (7 miles north) and Foley Park (11 miles north-east).
Around Capel
We work in homes and buildings around Foal Hurst Wood, The Dovecote Inn and Mascalls School and the streets around them. The nearest railway station is Paddock Wood station, roughly 2 miles east. Nearby you will also find Tonbridge Castle (3.4 miles north-west) and Tunbridge Wells Hospital (2.5 miles south-west). For a walk, there’s Tudeley Woods RSPB reserve and Barden Lake.
What affects the quote in Capel
For a quick quote, just ask. What matters most is:
- The old material and how stubborn it is
- The type of sealant required
- Whether there’s mould to deal with
- How many areas need sealing
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part.
Helping us quote
When you call or email, these details help:
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Where the job is, and your postcode
- What’s wrong with the joints now
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You will have a clear quote before we start.
When it is not the sealant
We won’t take on work that won’t last, so these are the limits:
- Crumbling stone or brickwork round the window
- Sashes that rattle, stick or won’t open
- Decisions on consent for listed homes
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Tenement windows
- Stone surrounds
- Period & listed homes
- Brick reveals
- Sash and case windows
- Timber door frames
Landlords, agents and businesses in Capel
We work for landlords and agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can be quoted together.
Common questions in Capel
Do you work for landlords with property near Paddock Wood station?
Yes, we work for landlords and letting agents. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will send you a clear quote.
Is Capel within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is the work guaranteed?
There’s a 12-month guarantee on every job.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses, and we are fully insured.
Where is Mr Mastic based?
We are based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
What do you need from me for a quote?
Tell us what needs doing and where, plus pictures if you have them. We’ll ask anything else we need to know.
Can old silicone round a sash window be swapped for sand mastic?
Yes, we do this often. All the old silicone is removed first so the mastic can sit properly.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Signs you need sand mastic in Capel
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint.
If you can see any of these, it’s time to have the joints looked at:
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
- Patchy fillers round a sash window
- Draughty sash windows at the surround
In the older streets around Church of St Thomas à Becket, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
What your quote should include
- Is VAT in the price?
- The length of the guarantee
- What insurance they hold
- What happens if the job turns out different