West Sussex · England
Ditchling Window Mastic
Window mastic across Ditchling and nearby, with old sealant always removed completely and a 12-month guarantee.
- Old mastic that has gone black or come away
- Cracked sealant at the sill ends
- Rain getting in at the frame or under the sill
Window mastic for homes and businesses in Ditchling
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that cannot flex, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. Common call-outs are for mastic that has split away from the wall and a bead that doesn’t match the frame, across patio & French doors, timber windows & doors and window sills.
Around Ditchling, many homes face open ground, so their windows and doors take the full weather. That exposure dries out and cracks the mastic around frames and sills faster.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Ditchling (BN6)
- Region
- West Sussex
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a handful of frames, longer for a whole house. Somewhere as small as Ditchling, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Before we arrive
- Mention any tricky access
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Related advice
Keeping the joints in good condition
So the new joints stay in good condition:
- Keep jet washers away from the mastic
- Keep timber frames painted
- Keep paint off silicone joints
- Air rooms to keep condensation down around windows
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.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. Any of these is worth a call.
Work for landlords, hotels and businesses
If you manage several properties in or around Ditchling, several properties can be quoted together. Just tell us the addresses and what each one needs.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What the job involves on each surface
Window sills
The end joints of a sill tend to fail before the rest. We reseal them so rain can’t run into the wall.
Aluminium frames
Coated aluminium needs a compatible sealant. We use a neutral-cure product.
Places near Ditchling
Other services in Ditchling
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Common problems we fix in Ditchling
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
Signs it’s time to call us include:
- Black, perished sealant on frames
- White mastic on grey or black frames
- Cracked internal joints between frame and plaster
- Hard, cracked sealant around windows
In the older streets around Ditchling Unitarian Chapel, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- What the cure time is
- What insurance they hold
- Which sealant they’ll use, and why
- The length of the guarantee
Window mastic in Ditchling: local notes
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Hassocks 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 Ditchling (St Margaret's) Church of England Primary School? Then its window and door frames need their mastic kept sound, just like a home’s.
Ditchling is about 3 miles south of Burgess Hill, in West Sussex. Homes, rented property, offices and hotels in Ditchling can book us for window mastic, old or new, large or small. The work is guaranteed for a year. We cover 371 towns and villages across West Sussex, large and small. For nearby work, see our Brighton page.
Work in BN6 is quoted and booked the same way as anywhere else. We cover properties on High Street, The Twitten and Charlton Gardens and the roads around them. Nearby, we also carry out window mastic in Keymer (1 mile west), Westmeston (1 mile south), Hassocks (1 mile west), Clayton (2 miles south-west) and Hurst Wickham (2 miles north-west). We also work in nearby towns such as Crawley (14 miles north), Horsham (13 miles north-west), Worthing (14 miles south-west), Haywards Heath (5 miles north), East Grinstead (15 miles north) and Shoreham-by-Sea (9 miles south-west).
Near you in Ditchling
We work in homes and buildings around Downlands Community School and The Bull Hotel and the streets around them. Ditchling’s nearest station is Hassocks station, roughly 1.4 miles west. Well-known places in the area include Ditchling Museum of Art + Craft (under half a mile west) and The Dene Hospital (3.8 miles north-west). For a walk, there’s Ditchling Beacon and Bedelands Farm Nature Reserve.
Common questions in Ditchling
Do you work for landlords with property near Hassocks station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. Just phone 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear price.
Will you come out to Ditchling?
Yes. Ditchling is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Do you work on first-floor windows?
Yes, where they can be reached safely. Tell us about access when you get in touch so we can plan the job.
Can you seal the gap between the frame and the plaster indoors?
Yes. Plenty of draughts come through the inside joint as well as the outside, so sealing both is often worthwhile.
Is it OK to seal over old sealant?
No. The old sealant always comes out first, so the new joint bonds to clean surfaces.
What should I tell you?
Let us know what needs doing and where. We’ll ask anything else we need to know.
How long will my window job take?
A few frames take a few hours, while a whole house takes longer. You will get a timescale with the quote.
When it is not the sealant
A few problems are outside what sealant work can do:
- A failed sealed unit that has misted up
- Penetrating damp from a failed cavity tray or render
- Broken hinges, locks or handles
If you are not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
Surfaces we seal
- Composite doors
- Patio & French doors
- Window sills
- uPVC windows
- Timber windows & doors
- Aluminium frames