Medway · England
Darland Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in Darland. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Mastic dropping out of the joint
- Silicone on a period window that looks wrong
- Draughty sash windows at the surround
About our sand mastic in Darland
Sand mastic does not last for ever, leaving gaps round the window. We rake it out and renew it so the surround looks right again. If you are dealing with a silicone bead on a sash window that spoils the look and mastic that needs renewing before redecorating, we can help, on stone surrounds, period & listed homes and tenement windows alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Darland 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 in Darland and across Medway.
- Place
- Darland (ME7)
- Wider area
- Medway
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What else we do in Darland
When to call us in Darland
Rain on the window surround works into any crack and loosens it further. Exposed elevations normally fail first.
Signs it’s time to call us include:
- Cracked mastic round a front door frame
- Open joints round the window box
- Draughts and rain around sash boxes
- Silicone on a period window that looks wrong
Letting a property close to Gillingham (Kent) station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- Whether the sealant suits the joint
- What preparation is included
- The length of the guarantee
- How hidden problems are handled
Darland questions
Is Darland within the area you cover?
Yes. Darland 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.
Does the coastal weather in Darland affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Do you offer different sealant colours?
We help you choose a colour that suits, from white and clear to greys and other shades. The choice depends on the product the joint needs.
Can tenants book the work?
We are happy to deal with the tenant, landlord or agent. Just make sure your landlord agrees.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. If you are redecorating the window, ask us first and we’ll talk you through it.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we are using and why.
When will the new mastic be hard?
Not straight away. It skins first and hardens fully later, and we’ll tell you what to expect.
How long will you be here?
Most jobs take a few hours per window, depending on the condition of the joints, including the preparation. Your quote will say how long we expect yours to take.
What we can’t put right
In fairness, some problems need a different trade:
- Timber that has rotted
- Sash cords, weights and draught-proofing of the sashes
- Cracked or broken glass
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think before you book.
What we seal
- Period & listed homes
- Stone surrounds
- Tenement windows
- Brick reveals
- Sash and case windows
- Timber door frames
Windows and doors in Darland
Darland is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Christ Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Schools such as Kingfisher Community Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Darland is about 1 mile south-west of Gillingham, in Medway. If you need sand mastic in Darland, please phone 0345 464 0079 or drop us an email for a quick quote. We are based in Crawley and cover Medway. Darland is one of 68 places in Medway where we work. Our Chelmsford page covers work nearby (26 miles or so).
All of ME7 is covered for sand mastic, from the main roads to the quietest streets. Whether your property is on Brickmakers Way, Banksview Drive and Pear Tree Lane or a nearby road, we can help. If you are just outside Darland, we cover Hale (1 mile north-west), Capstone (1 mile south), Luton (1 mile north-west), Hempstead (1 mile south-east) and Gillingham (1 mile north-east). We also work in nearby towns such as Rochester (3 miles north-west), Strood (4 miles north-west), Hoo St Werburgh (4 miles north), Rochester Riverside (3 miles north-west), Peters Village (4 miles west) and Frindsbury (3 miles north-west).
Around Darland
Typical jobs here are in homes near The Star pub, The Robert Napier School and Darland Banks, among other places. The closest station to Darland is Gillingham (Kent) station, about 1.7 miles north of the centre. A little further out are Six Poor Travellers House (3 miles north-west) and Rochester Castle (3.1 miles north-west). Open spaces near Darland include Burham Down and Blue Bell Hill.
Different surfaces, different methods
Period and listed homes
Sand mastic is the like-for-like choice for many period homes. If your home is listed, ask your local planning authority about consent.
Timber door frames
Round a period front door, sand mastic gives the right look.
Why it’s worth doing now in Darland
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Where a wall is exposed, as many are in small places like Darland, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
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. We take all of that into account in your quote.
Why book with us
- Rated 4.9 stars on Google
- Over 20 years’ experience
- We never seal over old sealant
- Every job guaranteed for a year
Take a look at what affects the cost or what customers say.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
How it works
There’s no need to move everything out, only the area right around the joints. We protect the rest, and the job takes a few hours for a single window, longer for several in most cases. In a small place like Darland, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- For business premises, tell us about site rules or sign-in
- Mention any tricky access
- Let us know about earlier repairs to the joints
Ask for a quote
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before any work starts.