Kent · England
Capel-le-Ferne Window Mastic
Mastic around window and door frames, sills and patio doors for Capel-le-Ferne, backed by a 12-month guarantee. Ask us for a quote.
- White mastic on grey or black frames
- Mastic that’s falling out in pieces
- Cracked sealant at the sill ends
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
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.
Window mastic in Capel-le-Ferne, done properly
There are two joints on most windows. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. Common call-outs are for gaps where the sill meets the wall and old mastic that has gone black or come away, across composite doors, aluminium frames and patio & French doors.
Somewhere as small as Capel-le-Ferne, older homes often have timber frames set in stone or brickwork. Not every older frame suits a modern silicone bead, and sometimes a traditional sand mastic is the better choice.
We stand behind the work with a 12-month guarantee, so you are covered after we have gone.
- Location
- Capel-le-Ferne (CT18)
- Region
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Common questions in Capel-le-Ferne
I let a flat near Folkestone Central station. Can you help?
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 will give you a fixed price before we start.
Is Capel-le-Ferne within the area you cover?
Yes, Capel-le-Ferne is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Can resealing stop a draught around my window?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that is a different fix, and we will say so.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Can you seal the gap between the frame and the plaster indoors?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We do one or both.
What does window mastic cost?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or email us and tell us what needs doing and where.
Where are you based?
We’re based in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Will it make a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
Leave it or put it right?
A quick bead over the top of old mastic looks like an easy fix, but new sealant cannot bond to old, crumbling mastic. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. In a small place like Capel-le-Ferne, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, phone 0345 464 0079 or email us for an honest opinion and a quote.
What you get with us
- 180+ five-star Google reviews
- We leave the area clean and tidy
- Old sealant always removed completely
- Over 20 years’ experience
Read our cost guide or our reviews.
What we’re called out for in Capel-le-Ferne
Mastic ages in the weather. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
The most common problems we see are:
- Black, perished sealant on frames
- Draughts coming in around windows and doors
- Water coming in at the bottom corners of a door
- Cracked internal joints between frame and plaster
In the older streets around St Radigund, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- The length of the guarantee
- What happens if they find a problem under the old sealant
- Who turns up on the day
- Is VAT in the price?
How the job changes by surface
Aluminium frames
Aluminium needs a sealant that bonds to coated metal, and acetoxy silicones aren’t used, as they can attack some metals. We use a neutral-cure product.
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain cannot run into the wall.
How it works
You don’t need to clear the whole room or building, only the area right around the joints. Everything nearby is protected, and the job takes a few hours for a handful of frames, longer for a whole house in most cases. Somewhere like Capel-le-Ferne needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Before we arrive
- Tell us if parking is tricky
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
Get a quote
For window mastic in Capel-le-Ferne, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Read more
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Other services in Capel-le-Ferne
What we can’t put right
We’d rather tell you now than do work that won’t last, so these are the limits:
- A door that needs adjusting, rehanging or new seals
- Rotten timber, which needs a joiner first
- A sash or casement that won’t close properly
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Composite doors
- Aluminium frames
- Window sills
- Patio & French doors
- Timber windows & doors
- uPVC windows
Window mastic in Capel-le-Ferne: local notes
Capel-le-Ferne is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Historic houses like Acrise Place (about 4.2 miles north-west) are a reminder that the area around Capel-le-Ferne has older buildings as well as new. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
Schools such as Capel-le-Ferne Primary School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s. Rented homes near Folkestone Central station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Capel-le-Ferne is about 2 miles north-east of Folkestone, in Kent. Every kind of property in Capel-le-Ferne can book us for window mastic. Every job comes with our one-year guarantee. Capel-le-Ferne is one of 922 places in Kent where we work for window mastic. For nearby work, see our Chelmsford page, about 54 miles away.
Here we cover the CT18 postcode area for window mastic. Local streets include New Dover Road, Alexandra Road and Clarence Road, and we cover them all. Neighbouring places we cover for window mastic include Satmar (1 mile north-east), West Hougham (1 mile north-east), Drellingore (2 miles north), South Alkham (2 miles north) and Church Hougham (2 miles east). Further out, we also cover Ashford (15 miles west), Canterbury (13 miles north-west), Dover (4 miles north-east), Deal (11 miles north-east), Hythe (6 miles west) and Tower Hamlets (4 miles north-east).
Local landmarks in Capel-le-Ferne
Around Capel-le-Ferne, our work takes us to homes and buildings near East Cliff and Warren Country Park and The Valiant Sailor pub. For rail, the closest station is Folkestone Central station, about 2.4 miles south-west of the centre. A little further out are Folkestone Castle (2.3 miles west) and Royal Victoria Hospital (2.1 miles south-west). Open spaces near Capel-le-Ferne include Sugar Loaf Hill and Dover Western Heights.
Landlords, agents and businesses in Capel-le-Ferne
Landlords and letting agents in Capel-le-Ferne can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
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.