Kent · England
Window & door mastic in Capel, Kent
Specialist window mastic for Capel: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Black, perished sealant on frames
- Gaps where the sill meets the wall
- Gaps between the frame and the inside reveal
Window mastic for homes and businesses in Capel
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. Typical jobs include draughts coming in around windows and doors and sealant in the wrong colour for the frame, on window sills, composite doors and timber windows & doors.
Mastic can only go onto a dry, clean joint, so window work in Capel is booked around the forecast. Let us know about access to all the frames, upstairs ones included.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Where
- Capel (TN12)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of window mastic
We don’t publish a price list, because no two jobs are the same. What we look at:
- How many rooms, windows or areas are involved
- Whether old sealant or filler has to be cut out
- Access and height
- Any mould that needs treating
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first and give you a clear quote before any work starts.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Whether it’s a home or a business
- Roughly how big the job is
- Pictures of the joints, sent by email
- If someone has resealed it before
For window mastic in Capel, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Capel: your questions answered
I let a flat near Paddock Wood station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll send you a clear quote.
Will you come out to Capel?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
What does window mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or send us an email with a short description of the job.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Can you do the inside joint as well?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.
Are you fully insured?
Yes. Full insurance covers our work.
Windows and doors in Capel
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Capel Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. If you live in an older home near Church of St Thomas à Becket, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Capel is about 3 miles south-east of Tonbridge, in Kent. Homes, rented property, offices and hotels in Capel can book us for window mastic, old or new, large or small. The work is guaranteed for a year. Capel is one of 922 towns and villages in Kent where we work. Crawley is on our list too, about 24 miles from Capel.
Here we cover the TN12 postcode area for window mastic. We cover properties on Redwood Park, Alders Road and Church Lane and the roads around them. Close by, we work in Five Oak Green (1 mile north-east), Colt's Hill (1 mile east), Crockhurst Street (1 mile west), Tudeley (1 mile north-west) and Tudeley Hale (2 miles north-west). Further out, we also cover Maidstone (10 miles north-east), Sevenoaks (10 miles north-west), Royal Tunbridge Wells (4 miles south-west), Tonbridge (3 miles north-west), Kings Hill (7 miles north) and Foley Park (11 miles north-east).
Landmarks near Capel
Typical jobs here are in homes near Foal Hurst Wood, The Dovecote Inn and Mascalls School and the streets around them. The closest station to Capel is Paddock Wood station, roughly 2 miles east. Well-known places in the area include Tonbridge Castle (3.4 miles north-west) and Tunbridge Wells Hospital (2.5 miles south-west). For a walk, there’s Tudeley Woods RSPB reserve and Barden Lake.
What happens on the day
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a morning for a couple of windows and a door. Somewhere as small as Capel, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Let us know about parking restrictions
- Clear the area around the work
- Mention any sign-in or site rules at work premises
Getting a quote
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, phone 0345 464 0079 or send us an email.
Related advice
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
A careful DIYer can reseal a simple joint, 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.
Do you need window mastic in Capel?
Frames are never completely still. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. If the sealant can’t stretch, it splits.
The most common problems we see are:
- Hard, cracked sealant around windows
- Draughts coming in around windows and doors
- A bead that does not match the frame
- Black, perished sealant on frames
For landlords with property near Paddock Wood station, renewing tired window mastic between tenants heads off draught and damp complaints.
Comparing quotes
- Which sealant they’ll use, and why
- Are they insured?
- What the quote includes, VAT included or not
- What happens if the job turns out different
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Ventilate rooms so frames don’t stay wet inside
- Keep jet washers away from the mastic
- Do not paint over the silicone
- Make sure the drainage slots are not blocked
Silicone cannot usually be painted, so mention any painting plans before any work starts. We can use a paintable sealant where that matters.
A small gap around a frame only grows. As old mastic keeps shrinking, the gap widens, and heat escapes around the frame. A new joint closes it up.
More services for Capel
What sealant work cannot fix
Sealant is not the answer to every problem, and we’ll tell you before work begins. It won’t solve:
- Draughts through the window seals rather than the frame
- A sash or casement that will not close properly
- Condensation trapped between the panes
If you’re not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Surfaces we seal
- Aluminium frames
- Patio & French doors
- Composite doors
- Timber windows & doors
- uPVC windows
- Window sills