Kent · England
Window & door mastic in Bapchild, Kent
Window mastic for Bapchild, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughts coming in around windows and doors
- Gaps where the sill meets the wall
- Hard, cracked sealant around windows
Window mastic in Bapchild, done properly
Every window and door frame has a gap around it, and mastic is what closes it. Once that seal fails, wind and rain find the gap. The old mastic is removed and the joint resealed with a flexible exterior sealant. Typical jobs include gaps between the frame and the inside reveal and old mastic that has gone black or come away, across timber windows & doors, patio & French doors and composite doors.
Around Bapchild, many homes face open ground, so their windows and doors take the full weather. Exposed frames and sills lose their mastic sooner than sheltered ones.
You get a one-year guarantee, the same in Bapchild as everywhere else we work.
- Where
- Bapchild (ME9)
- Region
- Kent
- Cover
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When it is not the sealant
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Faulty window hardware
- Damp coming through the wall itself rather than the frame joint
- A door that needs adjusting, rehanging or new seals
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Window sills
- Composite doors
- Aluminium frames
- uPVC windows
- Patio & French doors
- Timber windows & doors
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Ventilate rooms so frames don’t stay wet inside
- Keep timber frames painted
- Clean frames with a soft cloth and soapy water
- Check the mastic once a year
Most silicone sealants won’t take paint, so mention any painting plans before work begins. There are paintable sealants for joints that need it.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
Work for landlords, hotels and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
FAQs for Bapchild
Can you help a landlord with a rental near Teynham station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Will you come out to Bapchild?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
How long does it take to reseal the windows on a house?
Allow most of a day for a typical house, less for a few frames. Access and how stubborn the old mastic is affect the time most.
Are you fully insured?
Yes. We are fully insured, with over 20 years’ experience in sealant work.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint before we leave.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Can you do the inside joint as well?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The work itself takes most of a day for a typical house, less for a few frames. Somewhere as small as Bapchild, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by checking each window and door with you.
- Next the failed sealant is cut away and the joint cleaned.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- We clear up and check every joint is fully closed.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Mention any sign-in or site rules at work premises
- Tell us about any water getting in
Getting a quote
We quote each job on its own, so start by telling us what you need. Just phone 0345 464 0079 or email us with the details.
Related advice
What affects the cost of window mastic
We do not publish a price list. The quote depends on:
- How easy the joints are to reach
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
- The number of rooms or windows
Doing several joints on one visit is usually more efficient than separate visits. We’ll give you a clear quote for the lot.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
- A few photos by email, if you can
- The address or postcode of the job
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved.
What the job involves on each surface
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We can talk through the options.
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
Windows and doors in Bapchild
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. Historic houses like Belmont House and Gardens (about 4.6 miles south-east) are a reminder that the area around Bapchild 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.
For site and facilities teams at buildings such as Rodmersham School, 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 frames set in older brick or stone need a sealant that suits the wall as well as the frame. For landlords with property near Teynham station, renewing tired window mastic between tenants heads off draught and damp complaints.
Bapchild is about 2 miles south-east of Sittingbourne, in Kent. Homes, rented property, offices and hotels in Bapchild can book us for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across Kent, we cover 922 places, and Bapchild is one of them. There’s also a page for Chelmsford, about 31 miles away.
Here we cover the ME9 postcode area for window mastic. We also cover the places around Bapchild: Rodmersham (1 mile north), Newbury (1 mile south), Rodmersham Green (1 mile west), Lynsted (1 mile east) and Highsted (1 mile west). Within a short drive, we also cover Maidstone (11 miles west), Ashford (13 miles south), Canterbury (14 miles east), Whitstable (12 miles east), Faversham (5 miles east) and Minster (7 miles north).
What’s near Bapchild
Typical jobs here are in homes near Cromers Wood, The Sittingbourne School and Black Lion Public House. The closest station to Bapchild is Teynham station, about 2.1 miles north-east. Nearby you’ll also find Bayford Court (2.1 miles north-west) and Sittingbourne Heritage Museum (1.9 miles north-west).
Nearby places to Bapchild
What else we do in Bapchild
DIY versus a professional finish
A DIY attempt does not rule out a professional job. We cut it out and start again.
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.