East Sussex · England
Chailey Window Mastic
Window mastic in Chailey from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked or shrunken mastic around the frame
- Cold air getting in at the frame edge
- Black, perished sealant on frames
Window mastic for homes and businesses in Chailey
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. Either or both can be done. We work on aluminium frames, window sills and uPVC windows, and common reasons people get in touch are mastic that’s falling out in pieces and gaps where the sill meets the wall.
Around Chailey, 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.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Chailey (BN8)
- Region
- East Sussex
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When it is not the sealant
Before you book, it’s worth knowing the limits too:
- Draughts through the window seals rather than the frame
- Rotten timber, which needs a joiner first
- Misting between the panes of a double-glazed unit (that needs a new unit)
If in doubt, ring 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Patio & French doors
- Window sills
- Aluminium frames
- Composite doors
- uPVC windows
- Timber windows & doors
FAQs for Chailey
Do you cover smaller places like Chailey?
Yes. Chailey is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Chailey in your area for window mastic?
Yes, Chailey is within the area we cover. Our work covers London and the South East. You can phone 0345 464 0079 or email us and let us know what needs doing.
Do you do commercial work?
Yes. We’ve worked for hotels, offices and other businesses and we are fully insured.
Where are you based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
How do I get a quote for window mastic in Chailey?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or send us an email and let us know what needs doing and where.
Can I paint over the new sealant?
Not usually, if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
More services for Chailey
How to look after the new joints
So the new joints stay in good condition:
- Keep paint and stain on wooden frames in good order
- Air rooms to keep condensation down around windows
- Keep jet washers away from the mastic
- Do not paint over the silicone
Silicone cannot generally be painted, so mention any painting plans before work begins. There are paintable sealants for joints that need it.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Can I do it myself?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
Some sealant jobs are within reach of a careful DIYer, 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.
For landlords and businesses
If you manage several properties in or around Chailey, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
What we do, step by step
There is not much for you to do on the day. Show us the job and we will take it from there. The job generally takes a few hours for a handful of frames, longer for a whole house, including the tidy-up. For a village or hamlet like Chailey, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
How to prepare
- Let us know about earlier repairs to the joints
- Clear items away from the joints we are working on
- Try not to wet indoor joints just before the visit
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, ring 0345 464 0079 or send us an email.
Read more
Frames and glazing around Chailey
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Plumpton station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets. Managing a site like Chailey St Peter's Church of England Primary School? Then its window and door frames need their mastic kept sound, just like a home’s. In the older streets around The Parish Church of St Peter, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Chailey is about 5 miles south-east of Haywards Heath, in East Sussex. Jobs in Chailey get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across East Sussex, we cover 289 places, Chailey among them. Brighton is on our list too, around 10 miles away.
Postcode districts we cover here for window mastic: BN8. Close by, we work in North Chailey (1 mile north), South Street (1 mile south-west), Newick (1 mile north-east), Founthill (1 mile east) and South Chailey (2 miles south-west). Further out, we also cover Seaford (14 miles south), Lewes (6 miles south), Hailsham (13 miles south-east), Crowborough (10 miles north-east), Uckfield (5 miles east) and Newhaven (12 miles south).
What’s near Chailey
In Chailey, that means homes and buildings near Chailey School, The Five Bells Inn and Chailey Heritage School, among other places. Chailey’s nearest station is Plumpton station, roughly 3.1 miles south-west. Well-known places in the area include Princess Royal Hospital (4.1 miles north-west). Not far away are Blackcap and Bedelands Farm Nature Reserve.
How the job changes by surface
Timber windows & doors
Timber moves with moisture as well as heat, so a flexible sealant is essential. The paint or stain needs to be sound where the sealant meets it.
Patio & French doors
Patio and French doors have the longest joints on most houses. The threshold and the bottom corners take the most water, so we pay close attention there.
What affects the cost of window mastic
Call for a quick quote. What matters most is:
- How many rooms, windows or areas are involved
- Which sealant suits the joint
- The amount of work
- 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’ll talk you through it.
What we need to know
Photos help, but a description is a good start. Please mention:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
- A few pictures by email, if you can
- How many joints, rooms or windows are involved
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.