Medway · England
Sand Mastic in Cooling
Sand mastic for Cooling, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic round period door frames that has failed
- Silicone on a period window that looks wrong
- Patchy fillers round a sash window
Different surfaces, different methods
Sash and case windows
On a sash window, the mastic joint shows on the outside, so a neat, even finish matters.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair, so check who is responsible first.
Sand mastic for homes and businesses in Cooling
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted and we’ll advise if you’re redecorating. We work on brick reveals, sash and case windows and tenement windows, and common reasons people get in touch are old sand mastic that has cracked, crumbled or fallen out and draughty sash windows at the surround.
In a village or hamlet like Cooling, older cottages and farmhouses often have timber windows set in stone or brick. Not every older frame suits a modern silicone bead, so the sealant has to be chosen to suit the building.
Our work is backed for twelve months, in Cooling and everywhere else we cover.
- Place
- Cooling (ME3)
- Wider area
- Medway
- Cover
- One year on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Do you need sand mastic in Cooling?
Timber swells and shrinks with the weather. That movement opens up the mastic joint little by little.
Look out for any of the following:
- Draughts and rain around sash boxes
- Mastic that needs renewing before redecorating
- Gaps between timber frames and stone or brick
- Crumbling sand mastic round a window
Rented homes near Higham station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
- The length of the guarantee
- What the cure time is
Landlords, agents and businesses in Cooling
We work for landlords and letting agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Leave the new mastic unpainted
- Check the mastic when you check the paintwork
- Renew mastic before redecorating the windows
- Go gently near the mastic when preparing windows
Leave the new mastic alone while it firms up. It skins over quickly but needs longer to fully harden.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.
Honest limits
A few problems are outside what sealant work can do:
- Sashes that need overhauling
- Decisions on consent for listed homes
- Decayed frames that need repair
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
What we seal
- Tenement windows
- Stone surrounds
- Sash and case windows
- Brick reveals
- Timber door frames
- Period & listed homes
FAQs for Cooling
Does living near the coast affect sand mastic in Cooling?
Near the sea, outside joints face more wind, rain and salt than they would inland, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
I let a flat near Higham station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. You can phone 0345 464 0079 or email us with the details for a clear quote.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Is sand mastic better than silicone for my windows?
It depends on the window. On many period windows, sand mastic looks right and suits the building, while modern frames normally get a flexible sealant.
Should I try DIY first?
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.
Is the work guaranteed?
There’s a 12-month guarantee on every job, sand mastic included.
What does sand mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, phone 0345 464 0079 or send us an email and let us know what needs doing and where.
How it works
On the day, there’s very little for you to do. Show us the job and we will take it from there. The job generally takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Cooling, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Mention any tricky access
- On commercial sites, let us know about site rules
- Let us know about earlier repairs to the joints
Get a quote
Want a quote for sand mastic? Please call 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear price before we start.
Read more
Nearby places to Cooling
What else we do in Cooling
What affects the cost of sand mastic
The price is agreed before any work begins. It’s based on:
- Any mould that needs treating
- How easy the joints are to reach
- When we can work, for business premises
- The product the joint needs
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
What we need to know
There’s no need for technical detail. Just tell us:
- Any previous sealing or DIY work
- Where the job is, and your postcode
- Any access issues, like height or stairs
- Whether it’s a home or a business
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To arrange one, phone 0345 464 0079 or email us.
Windows and doors in Cooling
Cooling is within about 3 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Historic houses like Restoration House (about 4.9 miles south) are a reminder that the area around Cooling has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Homes close to St James' Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Cooling is about 5 miles north of Rochester, in Medway. Jobs in Cooling get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Medway, we cover 68 places, Cooling among them. You can also see our page for Chelmsford, about 20 miles away.
Jobs for sand mastic in ME3 works the same way as everywhere else we cover. That includes homes and businesses on Main Road and Cooling Road and the roads around them. Neighbouring places we cover for sand mastic include Cooling Street (1 mile south-west), High Halstow (2 miles east), Sharnal Street (2 miles south-east), Fenn Street (2 miles east) and Chattenden (2 miles south). Within a short drive, we also cover Gillingham (6 miles south), Chatham (7 miles south), Rochester (5 miles south), Rainham (7 miles south-east), Strood (5 miles south-west) and Luton (6 miles south).
Near you in Cooling
The closest station to Cooling is Higham station, roughly 3.3 miles south-west. Nearby you will also find Upnor Castle (3.4 miles south) and French Hospital (4.8 miles south). The countryside around Cooling includes Canvey Wick and Gad's Hill.