Kent · England
Sand mastic for sash & case windows in Alkham, Kent
We cover Alkham 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 a one-year guarantee.
- Gaps where the frame meets the masonry
- Mastic round period door frames that has failed
- Draughty sash windows at the surround
Aftercare tips
Simple care keeps the joints in good condition. Our advice:
- Look over the window mastic once a year
- Don’t run silicone over sand mastic
- Clear gutters so water does not pour onto the windows
- Check with your local planning authority if your home is listed
Look at the mastic when you look over the windows. Small cracks are easier to deal with early.
Small cracks are a sign the mastic is ageing. It’s easier to renew it before it drops out.
Sand mastic for homes and businesses in Alkham
Sand mastic suits most period window surrounds. On modern frames we’d normally use a flexible sealant and we’ll explain which is best for yours. We are often asked to deal with wind and rain getting in round a sash window and silicone on a period window that looks wrong, on timber door frames, stone surrounds and period & listed homes.
Homes in small places like Alkham often stand in the open, with little to shelter their windows from wind and rain. That exposure dries out and cracks the mastic around frames and sills faster.
All of our work is guaranteed for twelve months.
- Location
- Alkham (CT15)
- Wider area
- Kent
- Cover
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How we quote for sand mastic
The price is agreed before any work begins. It takes into account:
- Which sealant suits the joint
- Working hours on commercial sites
- The size of the job
- Whether there’s mould to deal with
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, call 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Helping us quote
When you call or email, it’s useful to know:
- How we’d reach the joints
- The address or postcode of the job
- Photos by email, if that is easy
- The rough size of the job
For a quote, phone 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Do you need sand mastic in Alkham?
Water gets into small cracks in the mastic and loosens it further. Exposed elevations normally fail first.
These are the problems we’re asked about most:
- Mastic round period door frames that has failed
- Weathered mastic on the most exposed windows
- Draughty sash windows at the surround
- Gaps between timber frames and stone or brick
Rented homes near Kearsney station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- Is the old sealant removed completely?
- Whether they’re fully insured
- What the cure time is
- How the colour is chosen
Can I do it myself?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What happens on the day
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes a few hours per window, depending on the condition of the joints and we leave things clean and tidy. For a village or hamlet like Alkham, 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 each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
How to get a quote
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Read more
Why deal with it now?
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. Older cottages and farmhouses around Alkham can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Why choose Mr Mastic in Alkham
- Anti-fungal silicone where joints get wet
- We are fully insured
- Domestic, commercial and hotel work
- ARBOMaster approved applicator
Nearby places to Alkham
Also in Alkham
When it is not the sealant
Some problems need a builder, plumber or other trade rather than us:
- Putty and glazing repairs
- Decisions on consent for listed homes
- Masonry that needs repairing
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Where we work in Alkham
- Timber door frames
- Stone surrounds
- Period & listed homes
- Tenement windows
- Sash and case windows
- Brick reveals
Alkham: your questions answered
Does living near the coast affect sand mastic in Alkham?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Do you cover smaller places like Alkham?
Yes, Alkham is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
How much does sand mastic cost in Alkham?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or drop us an email and tell us what needs doing and where.
Can you do several jobs on one visit?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
Is it OK to seal over old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Is consent needed for window work on a listed home?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish, but they decide.
Frames and glazing around Alkham
Alkham is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to Church of St Anthony the Martyr include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Alkham is about 3 miles west of Dover, in Kent. From the centre of Alkham to the outskirts, sand mastic is available for homes and businesses alike. Across Kent, we cover 922 places, and Alkham is one of them. For nearby work, see our Chelmsford page, about 52 miles away.
All of CT15 is covered for sand mastic. That includes homes and businesses on Alkham Valley Road, Hogbrook Hill Lane and Newlyn's Meadow and the roads around them. Neighbouring places we cover for sand mastic include South Alkham (1 mile south-west), Chalksole Green (1 mile north-west), Ewell Minnis (1 mile north), Wolverton (1 mile north-east) and Drellingore (1 mile south-west). Further out, we also cover Ashford (15 miles west), Canterbury (12 miles north-west), Dover (3 miles east), Folkestone (4 miles south-west), Deal (9 miles north-east) and Hythe (8 miles south-west).
Local landmarks in Alkham
Locally, jobs take us to homes and businesses close to Sladden Wood, among other places. The nearest railway station is Kearsney station, roughly 2.3 miles north-east. Nearby you’ll also find Folkestone Castle (3.7 miles south-west) and Crabble Corn Mill (2.6 miles east). Green spaces nearby include Dover Western Heights and Sugar Loaf Hill.