Kent · England
Sand Mastic in Great Mongeham
Sand mastic for Great Mongeham, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Crumbling sand mastic round a window
- Gaps where the frame meets the masonry
- Failed mastic on an exposed elevation
Landlord and commercial work in Great Mongeham
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Sand mastic in Great Mongeham
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s made from sand and a linseed-oil-based binder, applied by hand. On older homes, it suits the building far better than silicone. If you have silicone on a period window that looks wrong and cement or filler used on old window joints that has cracked, we can help, whatever the surface.
Somewhere as small as Great Mongeham, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or email us.
- Place
- Great Mongeham (CT14)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the quote in Great Mongeham
For a quick quote, just ask. What matters most is:
- Mould in or behind the old joints
- The product the joint needs
- Whether the work is at height
- The amount of work
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- The type of property
- Roughly how big the job is
- Any previous sealing or DIY work
- Photos by email, if that is easy
Asking for a quote is easy: let us know the job and the location and its rough size. A few photos by email make the job easier to understand.
Places near Great Mongeham
Other services in Great Mongeham
What happens on the day
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours per window, depending on the condition of the joints. In a small place like Great Mongeham, access is generally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Keep children and pets away from the work area
- Mention any parking rules near the property
Ask for a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Related advice
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Ask us before painting near the mastic
- Check the mastic when you check the paintwork
- Keep sills and gutters clear so water drains away
- Plan mastic work ahead of painting
Leave the new mastic unpainted, as traditional guidance advises. If you are redecorating, ask us first.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
Can I do it myself?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
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.
Questions from Great Mongeham
Does the coastal weather in Great Mongeham affect outside sealant?
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.
Can you help a landlord with a rental near Walmer station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Do you offer different sealant colours?
Usually, yes. Sealants come in white, clear, grey and other colours, and we’ll agree it with you first.
Do you work in Great Mongeham?
Yes. We’re based in Crawley and work across South East England, London and Scotland, and that includes Great Mongeham.
Do you have insurance?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Do you take out the old sealant first?
Always. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How much does sand mastic cost in Great Mongeham?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Signs you need sand mastic in Great Mongeham
Over the years, sand mastic weathers. It dries out, cracks and loses its grip from the frame or the masonry.
The problems people normally mention when they call include:
- A silicone bead on a sash window that spoils the look
- Wind and rain getting in round a sash window
- Old sand mastic that has cracked, crumbled or fallen out
- Open joints round the window box
Letting a property close to Walmer station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
What your quote should include
- Whether the sealant suits the joint
- Whether VAT is included
- How hidden problems are handled
- How the joint is cleaned and prepared
What we can’t put right
We will not take on work that will not last, so here’s what sealant can’t put right:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that need overhauling
- Whether work needs listed building consent
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Surfaces we seal
- Period & listed homes
- Tenement windows
- Brick reveals
- Stone surrounds
- Sash and case windows
- Timber door frames
Frames and glazing around Great Mongeham
Great Mongeham 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. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Hornbeam Primary School, its window and door frames need their mastic kept sound, just like a home’s. For an older house near a landmark such as Church of St Martin, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Great Mongeham is about 1 mile west of Deal, in Kent. If you need sand mastic in Great Mongeham, please phone 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Kent. Our Kent coverage runs to 922 places, Great Mongeham among them. We also work in Chelmsford, about 52 miles from Great Mongeham.
All of CT14 is within our area for sand mastic. If you need sand mastic at a property on Church Path, Northbourne Road and Mongeham Road or anywhere close by, our applicators can take on the job. Nearby, we also carry out sand mastic in Mill Hill (1 mile east), Sholden Meadows (1 mile north-east), Sholden (1 mile north-east), Ripple (1 mile south) and Northbourne (1 mile north-west). We also work in nearby towns such as Canterbury (13 miles west), Margate (12 miles north), Dover (6 miles south-west), Folkestone (12 miles south-west), Ramsgate (9 miles north) and Broadstairs (11 miles north).
Landmarks near Great Mongeham
In Great Mongeham, that means homes and buildings near Betteshanger Park, Castle Community College and The Mill Inn and the streets around them. The closest station to Great Mongeham is Walmer station, about 1.2 miles south-east of the centre. Nearby you will also find Deal Castle (1.9 miles east) and Kent Museum of the Moving Image (1.8 miles east). Green spaces nearby include Monk's Wall nature reserve.