East Sussex · England
Upper Dicker Window Mastic
Problem with your window and door frames in Upper Dicker? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Leaking joints at the ends of sills
- Water coming in at the bottom corners of a door
- Cold air getting in at the frame edge
Window mastic in Upper Dicker, done properly
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you’re dealing with mastic that has split away from the wall and mastic that’s falling out in pieces, we can help.
Around Upper Dicker, 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.
Whatever the size of the job, you get the same 12-month guarantee.
- Location
- Upper Dicker (BN27)
- Region
- East Sussex
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Upper Dicker
We don’t publish a price list, because no two jobs are the same. The quote depends on:
- The number of rooms or windows
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
- The amount of work
The cost reflects the work involved, not guesswork. That is why we ask about the job first and give you a clear price before work begins.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- Photos by email, if that is easy
- If someone has resealed it before
- Any access issues, like height or stairs
- The type of property
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Should I try it myself first?
If you are set on DIY, put the effort into 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.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Why deal with it now?
Working on frames from a ladder with a sealant gun is not easy, especially upstairs. We cut out properly, back deep gaps and tool every joint neatly, using a product chosen for the frame and wall. Around Upper Dicker, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Why Upper Dicker clients choose us
- Tidy, careful work
- Domestic, commercial and hotel work
- Fully insured
- Sealant colour chosen to suit
Take a look at our cost guide or customer reviews.
What window mastic looks like in Upper Dicker
Historic houses like Michelham Priory (about 0.6 miles south-east) are a reminder that the area around Upper Dicker has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Holy Trinity, the joint between an old wall and a newer frame is generally the first place rain gets in. Schools such as Bede's Prep School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Upper Dicker is about 2 miles west of Hailsham, in East Sussex. Wherever you are in the BN27 postcode area, we cover window mastic for homes and businesses. We cover 289 towns and villages across East Sussex, from the larger towns to small villages. Our Brighton page covers work nearby, about 15 miles away.
Our applicators cover all of the BN27 postcode area for window mastic. That includes homes and businesses on Camberlot Road, Old Forge Close and Coldharbour Road. Nearby, we also carry out window mastic in Lower Dicker (1 mile north-east), Tile Hurst (1 mile east), Lower Horsebridge (2 miles north-east), Nash Street (2 miles north) and Upper Horsebridge (2 miles east). Larger places within reach include Eastbourne (7 miles south-east), Bexhill-on-Sea (12 miles east), Seaford (8 miles south-west), Lewes (9 miles west), Crowborough (13 miles north) and St Leonards (15 miles east).
Near you in Upper Dicker
Around Upper Dicker, our work takes us to homes and buildings near The Plough Inn, Park Mead Primary School and Hailsham Community College, among other places. The nearest railway station is Berwick (Sussex) station, about 2.5 miles south-west. Nearby you will also find Agricultural Museum (3.6 miles south) and Hellingly Hospital Railway (2.8 miles north-east). The countryside around Upper Dicker includes Firle Beacon.
When to call us in Upper Dicker
Timber windows bring their own problems. Mastic painted over many times cracks with the paint, and timber moves with moisture as well as temperature.
The most common problems we see are:
- Mastic that has split away from the wall
- Gaps left after new windows were fitted
- Gaps between the frame and the inside reveal
- Leaking joints at the ends of sills
Rented homes near Berwick (Sussex) 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.
Comparing quotes
- What product goes in the joint
- Is the old sealant removed completely?
- What insurance they hold
- How long the guarantee is
Nearby places to Upper Dicker
Other services in Upper Dicker
Honest limits
A few problems are outside what sealant work can do:
- A failed sealed unit that has misted up
- Worn gaskets, brush seals or a door that has dropped
- Damp problems in the wall away from the window
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Surfaces we seal
- Window sills
- uPVC windows
- Composite doors
- Aluminium frames
- Patio & French doors
- Timber windows & doors
Upper Dicker: your questions answered
Do you cover smaller places like Upper Dicker?
Yes, Upper Dicker is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Is Upper Dicker in your area for window mastic?
Yes, Upper Dicker is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can resealing stop a draught around my window?
In many cases. The gap between frame and wall is a common source of draughts, and sealing the inside and outside joints closes that path.
What do you need from me for a quote?
A short description and the location, with pictures by email if possible. We will ask anything else we need to know.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. Indoors, that generally means someone at home.
How long should I leave it?
Different products cure at different speeds, so please follow the time we give you.
How the job changes by surface
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We can talk through the options.
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that without cracking.
The process
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a few frames, or a day or more for a whole house. Somewhere as small as Upper Dicker, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
Getting a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or send us an email.