East Sussex · England
Duddleswell Window Mastic
Mastic around window and door frames, sills and patio doors in Duddleswell, with a 12-month guarantee on every job. Ask us for a quote.
- Rushed sealant from a window installation
- Cold air getting in at the frame edge
- Hard, cracked sealant around windows
Window mastic in Duddleswell
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty and quietens the whistle on windy days. If the draught is through the window seals instead, we’ll tell you. Common call-outs are for cracked sealant at the sill ends and black, perished sealant on frames, across uPVC windows, composite doors and patio & French doors.
Somewhere as small as Duddleswell, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, so the sealant has to be chosen to suit the building.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Location
- Duddleswell (TN22)
- Wider area
- East Sussex
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
When it isn’t the sealant
Sealant is not the answer to every problem, and we will tell you before any work starts. Sealant won’t put right:
- Faulty window hardware
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A frame that has rotted at the joint
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Surfaces we seal
- Aluminium frames
- uPVC windows
- Window sills
- Composite doors
- Patio & French doors
- Timber windows & doors
Signs you need window mastic in Duddleswell
Sills take more water than any other part of a window, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
It’s worth asking for a quote if you see:
- Cold air getting in at the frame edge
- Gaps left after new windows were fitted
- Damp patches on the reveal after heavy rain
- Cracked or shrunken mastic around the frame
Around Duddleswell, as everywhere, window mastic is only as good as the preparation behind it.
Questions to ask before booking
- Whether the sealant suits the joint
- Is the old sealant removed completely?
- What insurance they hold
- What preparation is included
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
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What we do, step by step
There is not much for you to do on the day. Point us to the joints and we will get on with it. The work itself takes anything from an hour or two to a full day, depending on how many frames there are, including the tidy-up. Somewhere as small as Duddleswell, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
How to prepare
- Keep children and pets away from the work area
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Advice
Duddleswell: your questions answered
Do you cover Duddleswell for window mastic?
Yes, Duddleswell is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Do you cover smaller places like Duddleswell?
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.
Does the work come with a guarantee?
Yes, for 12 months. A yearly look at the joints helps them last.
Can you match the sealant to my frames?
Normally, yes. Tell us the frame colour when you get in touch and we will use the nearest match.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can I add another job to the visit?
Yes, we can. More than one area can go on one quote.
When is the sealant fully cured?
Cure times vary by product. We tell you how long to leave it before we go.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
Leave it or put it right?
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. Older cottages and farmhouses around Duddleswell can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost 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, so you know where you stand.
Why us?
- White, clear, grey or another colour, product permitting
- You choose the colour before work begins
- A sealant colour to suit the surroundings
- Experience in homes, commercial sites and hotels
Read our cost guide and our reviews.
Duddleswell homes and the weather
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Buxted station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Duddleswell is about 3 miles west of Crowborough, in East Sussex. Our applicators cover window mastic for homes and businesses in Duddleswell and nearby, as part of our work across East Sussex. Duddleswell is one of 289 places in East Sussex where we work for window mastic. For nearby work, see our Crawley page.
Jobs for window mastic in TN22 is quoted and booked the same way as anywhere else. Close by, we work in Nutley (2 miles west), Horney Common (2 miles south), Chelwood Gate (3 miles west), Chelwood Common (3 miles west) and Wych Cross (3 miles north-west). Further out, we also cover Lewes (12 miles south), Hailsham (14 miles south-east), Crowborough (3 miles east), Uckfield (5 miles south), South Malling (12 miles south) and Heathfield (9 miles south-east).
Local landmarks in Duddleswell
The closest station to Duddleswell is Buxted station, about 3.8 miles south-east. Nearby you will also find Crowborough War Memorial Hospital (3 miles east). For a walk, there’s Brickfield Meadow.
How we quote for window mastic
Your quote is based on your job. We take into account:
- The type of sealant required
- Mould in or behind the old joints
- How many areas need sealing
- When we can work, for business premises
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
What to tell us for a quote
When you contact us, it’s useful to know:
- The rough size of the job
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
We quote each job on its own. Simply ring 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
For landlords and businesses
Hotels need rooms back in use, 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.
We work for landlords and agents as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.