Kent · England
Bidborough Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Bidborough and across Kent. Fully insured, ARBOMaster approved and guaranteed for a year.
- Gaps round a timber door in stone or brick
- Old cement repairs round a window that have failed
- Crumbling sand mastic round a window
Why it’s worth doing now in Bidborough
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. In a small place like Bidborough, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
What it costs depends on the size of the job, how much old material has to come out and access to the work. You will have a clear quote before any work starts.
What you get with us
- Anti-fungal sanitary silicone in wet areas
- 4.9 on Google from 180+ five-star reviews
- Every job guaranteed for a year
- Domestic, commercial and hotel work
Read what affects the cost and what customers say.
About our sand mastic in Bidborough
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it and we will advise if you are redecorating. We work on timber door frames, sash and case windows and brick reveals, and common reasons people get in touch are silicone on a period window that looks wrong and draughts and rain around sash boxes.
Around Bidborough, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
You are covered for a year from the day we finish. If there’s a problem with it, please phone 0345 464 0079 or email us.
- Place
- Bidborough (TN3, TN4)
- Region
- Kent
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Bidborough questions
Is Bidborough within the area you cover?
Yes, Bidborough is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Bidborough in your area for sand mastic?
Yes. We work across London and the South East, and Bidborough is part of that. You can call 0345 464 0079 or drop us an email and let us know what needs doing, and we’ll give you a clear quote.
How long does the job take?
As a guide, most jobs take a few hours for a single window, longer for several. Bigger jobs take longer, and we will say how long yours will take.
Can you match the sealant colour?
In most cases you can choose. We will tell you which colours the right product comes in.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will talk you through it.
Do you work for letting agents?
Yes. Domestic, commercial and hotel work are all part of what we do.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it does not work out, we can redo it.
Windows and doors in Bidborough
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Penshurst Place (about 2.3 miles west) nearby, there’s older building stock in the area around Bidborough as well as newer homes. In older buildings, older frames set in brick or stone need a sealant that suits them, and sometimes that is traditional sand mastic.
Letting a property close to Leigh (Kent) station? Then any sash windows need sound mastic to keep draughts and rain out. Homes close to Parish Church of St Lawrence include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. If you look after a building such as Southborough CofE Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Bidborough is about 3 miles north-west of Royal Tunbridge Wells, in Kent. Wherever you are in the TN3 postcode area, our applicators can take on sand mastic. Bidborough is one of 922 towns and villages in Kent we cover. Our Crawley page covers work nearby (19 miles or so).
All of TN3 and TN4 is within our area for sand mastic. If you need sand mastic at a property on High Street, Rectory Drive and Glebelands or anywhere close by, we can help. Neighbouring places we cover for sand mastic include Stockland Green (1 mile south), Printstile (1 mile west), Southborough (1 mile south-east), Speldhurst (1 mile south-west) and Lower Haysden (1 mile north). Larger places within reach include Maidstone (14 miles north-east), Sevenoaks (8 miles north), Royal Tunbridge Wells (3 miles south-east), Tonbridge (3 miles north-east), Kings Hill (10 miles north-east) and Foley Park (15 miles north-east).
Around Bidborough
Typical jobs here are in homes near Haysden Country Park, The Beehive Public House and St Gregory's Catholic School. For rail, the closest station is Leigh (Kent) station, about 2.1 miles north-west of the centre. Nearby you will also find Tonbridge Cottage Hospital (1.7 miles north-east) and Tonbridge Castle (2.5 miles north-east). The countryside around Bidborough includes Tudeley Woods RSPB reserve and Barden Lake.
The process
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to a full day, depending on how many windows. Somewhere as small as Bidborough, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- We pack any deep voids first.
- We apply the mastic by hand and shape it.
- The surface is finished to suit the stone or brick.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
For a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before we start.
Related advice
Landlord and commercial work in Bidborough
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Keeping the joints in good condition
So the new joints stay in good condition:
- Have rotten timber repaired before new mastic goes in
- Clear gutters so water doesn’t pour onto the windows
- Ask us before painting near the mastic
- Take care around the mastic when scraping paint
Check the mastic when you check the paintwork. Catching cracks early keeps repairs small.
Sound mastic protects the frame. Failed mastic lets water reach the timber, which can lead to rot.
Quotes for sand mastic in Bidborough
You will get a clear quote before any work starts. It takes into account:
- When we can work, for business premises
- The number and length of the joints
- Mould in or behind the old joints
- The number of rooms or windows
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
What to tell us for a quote
There’s no need for technical detail. Just tell us:
- A few photos by email, if you can
- How many joints, rooms or windows are involved
- Where the property is
- The type of property
Every job is quoted individually, so start by telling us what you need. Simply ring 0345 464 0079 or send us an email and describe the job.
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
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.
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Whether work needs listed building consent
- Rotten sashes, sills or window boxes (a joiner’s job)
- Damaged stone surrounds
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before you book.
Surfaces we seal
- Stone surrounds
- Timber door frames
- Period & listed homes
- Sash and case windows
- Tenement windows
- Brick reveals