Kent · England
Flemings Sand Mastic
Professional sand mastic in and around Flemings, with every bit of old sealant taken out first and a 12-month guarantee.
- Silicone on a period window that looks wrong
- Gaps between timber frames and stone or brick
- Draughty sash windows at the surround
Sand mastic in Flemings, done properly
If your home is listed or in a conservation area, check with your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. Typical jobs include open joints round the window box and window mastic to renew ahead of painting, across stone surrounds, tenement windows and brick reveals.
In a village or hamlet like Flemings, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
There’s a 12-month guarantee on every job, large or small.
- Location
- Flemings (CT13)
- Wider area
- Kent
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
FAQs for Flemings
Can you help a landlord with a rental near Sandwich station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or send us an email with the details for a clear quote.
Is Flemings within the area you cover?
Yes, Flemings is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
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 product needed can limit the range.
Can old silicone round a sash window be swapped for sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
Do you take out the old sealant first?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
How long does sand mastic take to harden?
It takes a while. It skins first and hardens fully later and we will give you an idea for your job.
Do I need to be at home?
Access is agreed with you when the job is booked. Indoors, that normally means someone at home.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses.
More services for Flemings
What we are called out for in Flemings
Shallow joints are a common cause. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
Keep an eye out for any of the following:
- Crumbling sand mastic round a window
- Failed mastic on an exposed elevation
- Mastic round period door frames that has failed
- Window mastic to renew ahead of painting
Letting a property close to Sandwich station? Then any sash windows need sound mastic to keep draughts and rain out.
Questions to ask before you book
- What product goes in the joint
- Whether VAT is included
- Who turns up on the day
- What insurance they hold
What happens on the day
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours per window, depending on the condition of the joints. For a village or hamlet like Flemings, 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.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- On commercial sites, let us know about site rules
- Let us know about parking restrictions
- Plan for the work area to be out of bounds to pets and children
Get a quote
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.
Advice
What affects the quote in Flemings
You’ll get a clear quote before work begins. It takes into account:
- Working hours on commercial sites
- How many areas need sealing
- The old material and how stubborn it is
- Which sealant suits the joint
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Call for a quick quote and we’ll go through it with you.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Any access issues, like height or stairs
- Roughly how big the job is
- The problem you’ve noticed
- If it’s domestic, commercial or a hotel
For sand mastic in Flemings, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
Leave it or put it right?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in and new mastic seals them. Older cottages and farmhouses around Flemings can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, call 0345 464 0079 or email us for an honest opinion and a quote.
Why us?
- Over 20 years’ experience
- Full insurance on every job
- We never seal over old sealant
- 12-month guarantee on every job
See how sealant jobs are priced and our reviews.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. Our tips:
- Don’t run silicone over sand mastic
- Make sure water runs off the sill
- Ask us before painting near the mastic
- Take care around the mastic when scraping paint
Do not run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Flemings homes and the weather
Historic houses like Goodnestone Park (about 2.7 miles south-west) are a reminder that the area around Flemings has older buildings as well as new. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. 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.
Schools such as Ash Cartwright and Kelsey Church of England Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. Homes close to Church of St Nicholas include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Flemings is about 6 miles north-west of Deal, in Kent. Our applicators cover sand mastic for homes and businesses in Flemings. Our Kent coverage runs to 922 places, Flemings among them. Our Chelmsford page covers work nearby.
Work in CT13 is quoted and booked the same way as anywhere else. Close by, we work in Barnsole (1 mile west), Hammill Park (1 mile south), Coombe (1 mile north-east), Staple (1 mile west) and Ash (1 mile north). Larger places within reach include Canterbury (9 miles west), Margate (9 miles north-east), Dover (9 miles south), Folkestone (13 miles south), Ramsgate (8 miles north-east) and Broadstairs (9 miles north-east).
Around Flemings
Typical jobs here are in homes near The Black Pig Inn and Sandwich Technology School. The nearest railway station is Sandwich station, about 2.8 miles east. Nearby you’ll also find White Mill (2.4 miles north-east). For a walk, there’s Monk's Wall nature reserve.
When something else is needed
In fairness, there are a few things sealant won’t fix:
- Planning or listed building consent (your local planning authority decides)
- Decayed frames that need repair
- Cracked or broken glass
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Surfaces we seal
- Sash and case windows
- Tenement windows
- Timber door frames
- Stone surrounds
- Period & listed homes
- Brick reveals