Kent · England
Flishinghurst Sand Mastic
Window and door surrounds in Flishinghurst need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- A silicone bead on a sash window that spoils the look
- Mastic round period door frames that has failed
- Old sand mastic that has cracked, crumbled or fallen out
About our sand mastic in Flishinghurst
Across Flishinghurst, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. We work on stone surrounds, tenement windows and sash and case windows, and common reasons people get in touch are draughty sash windows at the surround and mastic that needs renewing before redecorating.
Homes in small places like Flishinghurst 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.
Whatever the size of the job, it’s backed by our one-year guarantee in Flishinghurst and across Kent.
- Location
- Flishinghurst (TN17)
- Region
- Kent
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
When it is not the sealant
To be straight with you, there are a few things sealant will not fix:
- Timber that has rotted
- Crumbling stone or brickwork round the window
- Putty and glazing repairs
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer.
Joints and surfaces we work on
- Period & listed homes
- Tenement windows
- Timber door frames
- Stone surrounds
- Brick reveals
- Sash and case windows
Should I try it myself first?
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Nearby places to Flishinghurst
Also in Flishinghurst
Leave it or put it right?
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic is the like-for-like choice and that can be important for listed homes. Older cottages and farmhouses around Flishinghurst can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Homes and businesses are quoted the same way: 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 explain what it covers.
Why us?
- Fully insured
- Rated 4.9 stars on Google
- Every job guaranteed for a year
- Sanitary silicone with an anti-fungal additive in wet areas
Read our cost guide or customer reviews.
What we do, step by step
Good joint work is mostly preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes anything from a few hours to a full day, depending on how many windows. For a village or hamlet like Flishinghurst, 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.
- 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.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- For business premises, tell us about site rules or sign-in
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
We quote each job on its own. Just phone 0345 464 0079 or send us an email with the details and send pictures if you have them.
Read more
Frames and glazing around Flishinghurst
Historic houses like Scotney Castle (about 4.5 miles west) are a reminder that the area around Flishinghurst 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. 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.
Letting a property close to Marden station? Then any sash windows need sound mastic to keep draughts and rain out. Historic houses such as Scotney Castle, about 4.5 miles west, show how far back building around Flishinghurst goes.
Flishinghurst is about 11 miles east of Royal Tunbridge Wells, in Kent. For sand mastic in and around Flishinghurst, it’s easy to get a quote: please ring 0345 464 0079 or email us. We cover Kent from our Crawley base. Our area takes in 922 places across Kent. There’s also a page for Crawley, about 30 miles away.
We work across TN17 for sand mastic. Other places close to Flishinghurst include Colliers Green (1 mile north), Wilsley Green (1 mile east), Wilsley Pound (2 miles east), Horden (2 miles north) and Sissinghurst (2 miles east). Within a short drive, we also cover Maidstone (11 miles north), Royal Tunbridge Wells (11 miles west), Tonbridge (12 miles north-west), Kings Hill (12 miles north), Foley Park (12 miles north) and Paddock Wood (7 miles north-west).
Near you in Flishinghurst
We work in homes and buildings around Crane Valley and High Weald Academy. For rail, the closest station is Marden station, about 4.6 miles north of the centre. Nearby you will also find Sissinghurst Castle (3.2 miles east) and Sissinghurst Castle (3.2 miles east).
How we quote for sand mastic
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- The number and length of the joints
- How many rooms, windows or areas are involved
- The type of sealant required
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
What to tell us for a quote
To help us quote quickly, let us know:
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
- The type of property
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work.
What the job involves on each surface
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Tenement and terrace windows
In shared buildings, the windows may be part of a wider repair so it’s worth checking responsibilities.
Questions from Flishinghurst
Do you work for landlords with property near Marden station?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Can you do sand mastic in Flishinghurst?
Yes, Flishinghurst is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, as guidance on traditional windows advises. Ask us before decorating.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant, and we will explain why.
Is consent needed for window work on a listed home?
Your local planning authority is the one to ask. They decide whether consent is needed.
What is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
What should I tell you?
Tell us what needs doing and where. We’ll ask anything else we need to know.
Common problems we fix in Flishinghurst
Timber frames move with the seasons. That movement opens up the mastic joint over time.
The problems people normally mention when they call are:
- Failed mastic on an exposed elevation
- A silicone bead on a sash window that spoils the look
- Mastic dropping out of the joint
- Gaps round a timber door in stone or brick
Schools such as Colliers Green Church of England Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
What to look for in a quote
- Who turns up on the day
- When the joint can take water or movement
- What product goes in the joint
- Is the old sealant removed completely?