Kent · England
Sand mastic for sash & case windows in Shirkoak, Kent
Sand mastic for Shirkoak, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Window mastic to renew ahead of painting
- Weathered mastic on the most exposed windows
- Draughty sash windows at the surround
Sand mastic in Shirkoak
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It’s a good fit for period properties where a modern sealant bead would stand out. Common call-outs are for draughts and rain around sash boxes and cement or filler used on old window joints that has cracked, on timber door frames, period & listed homes and sash and case windows.
Outdoor sealant needs dry, clean surfaces, so work on frames around Shirkoak is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
Big or small, you get the same 12-month guarantee.
- Place
- Shirkoak (TN26)
- Region
- Kent
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
For landlords and businesses
We work for letting agents and landlords as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Places near Shirkoak
What else we do in Shirkoak
Common problems we fix in Shirkoak
Timber swells and shrinks with the weather. The movement cracks the mastic little by little.
The most common problems we see are:
- Crumbling sand mastic round a window
- Wind and rain getting in round a sash window
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
In the older streets around Parish Church of All Saints, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- How the joint is cleaned and prepared
- How long the guarantee is
- What product goes in the joint
- When the joint can take water or movement
How to look after the new joints
After the cure time, these simple habits help:
- Look over the window mastic once a year
- Sort the mastic before the decorators arrive
- Keep sills and gutters clear so water drains away
- Leave the new mastic unpainted
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger as more mastic falls out.
Why deal with it now?
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it and traditional guidance is to leave the new mastic unpainted. Around Shirkoak, 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, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll go through it with you.
Why us?
- Every job guaranteed for a year
- 180+ five-star Google reviews
- Approved under the ARBOMaster scheme
- Quality sealants from Arbo and Everbuild
Sand mastic in Shirkoak: local notes
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. Historic houses like Smallhythe Place (about 4.8 miles south-west) are a reminder that the area around Shirkoak has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
For site and facilities teams at buildings such as Woodchurch Church of England Primary School, the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Ham Street station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Shirkoak is about 5 miles south-west of Ashford, in Kent. From the centre of Shirkoak to the outskirts, we cover sand mastic for every kind of property. Shirkoak is one of 922 towns and villages in Kent we cover for sand mastic. Crawley is on our list too, about 42 miles from Shirkoak.
Here we cover the TN26 postcode area for sand mastic. You will find streets such as Bethersden Road, Shirkoak Park and Redbrook Street, all of which we cover. We also cover Woodchurch (1 mile south), Brattle (1 mile south), Brook Street (2 miles south), Leigh Green (3 miles south-west) and Appledore Heath (4 miles south). We also work in nearby towns such as Ashford (5 miles north-east), Hythe (14 miles east), Tenterden (4 miles south-west), Bearsted (15 miles north-west), Park Wood (14 miles north-west) and Kennington (7 miles north-east).
Around Shirkoak
Typical jobs here are in homes near Stone Wood and The Bonny Cravat Inn and the streets around them. Shirkoak’s nearest station is Ham Street station, roughly 4 miles south-east of the centre. A little further out are Romden Castle (4.6 miles north-west) and Woodchurch Village Life Museum (0.7 miles south). Not far away are Orlestone Forest.
What happens on the day
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and tidy away. It generally takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Shirkoak, the journey is planned in advance: 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 the window surrounds and agree which joints need renewing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
- Clear items away from the joints we are working on
How to get a quote
We do not publish a price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or send us an email.
Advice
When it isn’t the sealant
Sealant isn’t the answer to every problem, and we will tell you before we start. It will not solve:
- Timber that has rotted
- Sashes that need overhauling
- Masonry that needs repairing
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Period & listed homes
- Sash and case windows
- Timber door frames
- Brick reveals
- Stone surrounds
- Tenement windows
What the job involves on each surface
Stone surrounds
Stone openings are rarely perfectly straight, so the gap isn’t the same all the way round. We shape it by hand to follow the stone.
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Shirkoak questions
Can you do sand mastic in Shirkoak?
Yes. Our work covers London and the South East, and Shirkoak is part of that. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Will you come out to Shirkoak?
Yes. Shirkoak is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
How long does sand mastic take to harden?
The surface skins quite quickly and it hardens fully over a longer time. Timing depends on the weather and the joint.
Is consent needed for window work on a listed home?
Checking first is sensible. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
Do you work for letting agents?
Yes, often. Several properties can be quoted together, and between tenancies is a good time for the work.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can I choose the sealant colour?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.