Kent · England
Swift's Green Window Mastic
Window mastic across Swift's Green and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Cracked sealant at the sill ends
- Whistling draughts around closed windows
- Old mastic that has gone black or come away
About our window mastic in Swift's Green
Frames and walls don’t move together. 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. We’re often asked to deal with gaps between the frame and the inside reveal and rain getting in at the frame or under the sill, across timber windows & doors, uPVC windows and window sills.
Outdoor sealant needs dry, clean surfaces, so work on frames around Swift's Green is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
You’re covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Location
- Swift's Green (TN27)
- Region
- Kent
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
What affects the cost of window mastic
We quote each job individually. These are the things that affect it:
- When we can work, for business premises
- Whether the work is at height
- The type of sealant required
- The number and length of the joints
Combining jobs into one visit is normally more efficient than separate visits, so tell us about everything that needs sealing. We’ll give you a clear price for the lot.
Asking for a quote
To make quoting easier, let us know:
- The problem you’ve noticed
- If someone has resealed it before
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
For window mastic in Swift's Green, call 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Surface by surface
Patio & French doors
Heavy door frames can move more than windows. The sealant must cope with it without cracking.
uPVC windows
The frame is cleaned with a product that will not harm the plastic, then the new bead is laid against the frame and the wall.
Windows and doors in Swift's Green
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Rented homes near Headcorn station change hands often, and sound mastic around windows and doors keeps out the draughts and damp that tenants notice first. Around Swift's Green, as everywhere, window mastic is only as good as the preparation behind it.
Swift's Green is about 9 miles west of Ashford, in Kent. Swift's Green gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Across Kent, we cover 922 places, Swift's Green among them. Crawley is on our list too, around 38 miles away.
We cover every part of TN27 for window mastic and the streets around it. We also cover the places around Swift's Green: Smarden Bell (1 mile south), Southernden (1 mile north), Smarden (1 mile south-east), Biddenden Green (1 mile south-east) and Monk's Hill (2 miles south). Further out, we also cover Maidstone (9 miles north-west), Ashford (9 miles east), Sittingbourne (12 miles north), Faversham (14 miles north-east), Kings Hill (14 miles north-west) and Davington (14 miles north-east).
Local landmarks in Swift's Green
Around Swift's Green, our work takes us to homes and buildings near The Bell Inn. For rail, the closest station is Headcorn station, roughly 2.1 miles west of the centre. A little further out are Kent Firefighting Museum (3.3 miles south-west) and Romden Castle (2.1 miles south-east).
Why act early in Swift's Green
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. Resealing now is a small job by comparison. Around Swift's Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
What you get with us
- Neat joints and a tidy finish
- Domestic, commercial and hotel work
- Trusted Arbo and Everbuild sealants
- Rated 4.9 stars on Google
See what affects the cost and customer reviews.
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Repaint timber before it’s bare
- Avoid blasting the frames with a pressure washer
- Walk round the house once a year and look at the joints
- Ventilate rooms so frames do not stay wet inside
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Keep paint off the silicone itself.
Look out for the warning signs: split or missing mastic, gaps, damp patches inside or black mould on the reveal. Any of these is worth a call.
Swift's Green questions
Is Swift's Green within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Headcorn station. Can you help?
Yes. We work for landlords and agents as well as householders. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
How long does it take to reseal the windows on a house?
It depends on access, the old mastic and the size of the frames. You’ll know the timing when we quote.
Do you seal inside as well as outside?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.
Can new sealant go over the old?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. The old sealant has to come out completely.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Swift's Green and the rest of Kent.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access.
Can I do it myself?
If you’re 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.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Towns and villages near Swift's Green
What else we do in Swift's Green
What happens on the day
There’s no need to move everything out before we come, just the space around the work. Everything nearby is protected, and the job takes anything from an hour or two to a full day, depending on how many frames there are in most cases. Somewhere as small as Swift's Green, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look at every frame and agree the list.
- Next the failed sealant is cut away and the joint cleaned.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
Get a quote
There’s no standard price list. Instead, we send you a clear quote for your job. To get started, call 0345 464 0079 or send us an email.