Kent · England
Sand mastic for sash & case windows in Kearsney, Kent
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Kearsney, backed by a one-year guarantee. Ask us for a quote.
- Cracked mastic round a front door frame
- Weathered mastic on the most exposed windows
- Modern sealant on a period surround
About our sand mastic in Kearsney
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it and we will advise if you’re redecorating. We work on brick reveals, stone surrounds and sash and case windows, and common reasons people get in touch are weathered mastic on the most exposed windows and patchy fillers round a sash window.
Homes around Kearsney range from older properties to newer houses, and their windows range just as widely. The right sealant depends on the frame and on what it sits in.
All our work is covered by a one-year guarantee.
- Where
- Kearsney (CT16, CT17)
- Wider area
- Kent
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
Kearsney homes and the weather
Kearsney is close to 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. 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.
Homes close to Church of St Peter and St Paul include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. For landlords with property near Kearsney station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Kearsney is about 1 mile north-west of Dover, in Kent. Kearsney gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Kent coverage runs to 922 places, and Kearsney is one of them. For nearby work, see our Chelmsford page (53 miles or so).
We cover every part of CT16 and CT17 for sand mastic and the streets around it. Sand mastic is available to properties on Park Road, Lower Road and The Avenue. We also cover the places around Kearsney: Temple Ewell (1 mile north), River (1 mile south-east), Whitfield (1 mile north-east), Wolverton (1 mile west) and Dover (1 mile south-east). We also work in nearby towns such as Canterbury (12 miles north-west), Folkestone (6 miles south-west), Ramsgate (15 miles north-east), Deal (7 miles north-east), Hythe (10 miles south-west) and Walmer (7 miles north-east).
Near you in Kearsney
Locally, jobs take us to homes and businesses close to Royal Oak Cottage The Royal Oak Public House, Old Park Hill and Dover Christ Church Academy, among other places. Kearsney has its own railway station: Kearsney station. A little further out are Crabble Corn Mill (0.7 miles south-east) and Dover Castle (2.7 miles south-east). Open spaces near Kearsney include Dover Western Heights.
How the job changes by surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Brick reveals
Gaps between frame and brick let in rain and draughts. Renewing the mastic closes it.
What affects the quote in Kearsney
You will get a clear quote before we start. It’s based on:
- Whether the work is at height
- Any mould that needs treating
- How many areas need sealing
- Working hours on commercial sites
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, ring 0345 464 0079 or email us and we will give you an honest view and a quote.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- Pictures of the joints, sent by email
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Also in Kearsney
Landlord and commercial work in Kearsney
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
The process
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. For a job in Kearsney, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Mention any leaks or damp you’ve noticed
- Mention any sign-in or site rules at work premises
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. When it suits you, phone 0345 464 0079 or email us.
Advice
Signs you need sand mastic in Kearsney
Scraping and sanding before painting can loosen old mastic. It’s often found when windows are being prepared for paint.
These are the problems we’re asked about most:
- Silicone on a period window that looks wrong
- Open joints round the window box
- Old sand mastic that has cracked, crumbled or fallen out
- Mastic round period door frames that has failed
For site and facilities teams at buildings such as Temple Ewell Church of England Primary School, its window and door frames need their mastic kept sound, just like a home’s.
Questions to ask before booking
- Who does the work, and how experienced they are
- Is VAT in the price?
- Are they insured?
- When the joint can take water or movement
Your questions about sand mastic in Kearsney
Is Kearsney within the area you cover?
Yes. Kearsney is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can you help a landlord with a rental near Kearsney station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can ring 0345 464 0079 or email us with the details for a clear quote.
Is it messy?
Tidy work is part of the job. We protect what’s around the joints.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish but the decision is theirs.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Can old silicone round a sash window be swapped for sand mastic?
Yes, we do this often. The old silicone has to come out completely so the mastic can sit properly.
What we cannot put right
We will not take on work that won’t last, so these are the limits:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
- Sash cords, weights and draught-proofing of the sashes
If in doubt, call 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Tenement windows
- Stone surrounds
- Brick reveals
- Period & listed homes
- Sash and case windows
- Timber door frames