Kent · England
Yorkletts Sand Mastic
We cover Yorkletts for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Gaps between timber frames and stone or brick
- Tired mastic found when preparing windows for paint
- Mastic dropping out of the joint
About our sand mastic in Yorkletts
We renew sand mastic around sash windows and doors in stone and brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. If you have a silicone bead on a sash window that spoils the look and gaps round a timber door in stone or brick, we can put it right.
Around Yorkletts, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
Every job is covered by a one-year guarantee, wherever you are in Kent.
- Location
- Yorkletts (CT5)
- Wider area
- Kent
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
When it is not the sealant
To be straight with you, there are a few things sealant will not fix:
- Cracked or broken glass
- Sashes that need overhauling
- Decayed frames that need repair
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Period & listed homes
- Timber door frames
- Stone surrounds
- Tenement windows
- Brick reveals
- Sash and case windows
Why deal with it now?
New sash windows are a major, costly change, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. In a small place like Yorkletts, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why Yorkletts customers choose us
- Over 20 years’ experience
- Full insurance on every job
- 4.9 on Google from 180+ five-star reviews
- Old sealant always removed completely
Read how sealant jobs are priced and our reviews.
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and clear up. It normally takes a few hours per window, depending on the condition of the joints. In a small place like Yorkletts, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Let us know about stairs, lifts or work at height
- Mention any sign-in or site rules at work premises
- Tell us if parking is tricky
Getting a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work before giving you a price.
Advice
Frames and glazing around Yorkletts
Yorkletts is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Whitstable station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. In the older streets around St Alphege, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Yorkletts is about 2 miles south-west of Whitstable, in Kent. Yorkletts gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Kent coverage runs to 922 places, Yorkletts among them. We also work in Chelmsford, about 36 miles from Yorkletts.
All of CT5 is covered for sand mastic, from the main roads to the quietest streets. Whether your property is on Ford Walk, Glen Walk and Coombe Walk or a nearby road, our applicators can take on the job. We also cover the places around Yorkletts: Denstroude (1 mile south-east), Honey Hill (2 miles south-east), Whitstable (2 miles north-east), Blean (2 miles south-east) and Radfall (3 miles east). Within a short drive, we also cover Ashford (14 miles south-west), Canterbury (5 miles south-east), Sittingbourne (12 miles west), Faversham (5 miles west), Herne Bay (6 miles north-east) and Minster (11 miles north-west).
Local landmarks in Yorkletts
Locally, jobs take us to homes and businesses close to Foxes Cross Bottom, among other places. The closest station to Yorkletts is Whitstable station, roughly 2.6 miles north-east. A little further out are Tankerton Castle (2.9 miles north-east) and Whitstable and Tankerton Hospital (3.2 miles north-east). The countryside around Yorkletts includes Blean Woods RSPB Reserve.
Your questions about sand mastic in Yorkletts
Can you help a landlord with a rental near Whitstable station?
Yes. We work for landlords and letting agents as well as householders. You can phone 0345 464 0079 or drop us an email with the details for a clear quote.
Does the coastal weather in Yorkletts affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
What is sand mastic?
It’s sand mixed with a linseed-oil-based binder, used between timber frames and stone or brick.
When will the new mastic be hard?
A skin forms quite soon, but full hardening takes longer. We will explain what to expect before we leave.
Where are you based?
Our base is Crawley. We work across South East England, London and Scotland.
Can you seal over the old sealant?
No, because it fails. The old sealant always comes out first.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Do you cover Yorkletts?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland.
Landlords, agents and businesses in Yorkletts
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Towns and villages near Yorkletts
Other services in Yorkletts
Common problems we fix in Yorkletts
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Keep an eye out for any of the following:
- Mastic worn away on windows facing the weather
- Gaps where the frame meets the masonry
- Patchy fillers round a sash window
- Mastic round period door frames that has failed
Managing a site like The Whitstable School? Then the mastic around its windows and doors needs looking after like any other building’s.
Before booking anyone
- Whether they’re fully insured
- What happens if the job turns out different
- Whether VAT is included
- How long to leave it before use
Looking after it afterwards
To keep the joints looking good and working properly:
- Ask us before painting near the mastic
- Inspect the joints round the windows every year or so
- Keep modern sealant off the mastic
- Take care around the mastic when scraping paint
Make sure water drains away from the window surround. Constant wetting wears the mastic faster.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens as more mastic falls out.