East Sussex · England
External & façade joints in Wilmington, East Sussex
We cover Wilmington for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Damp patches traced to an open external joint
- Failed seals between different materials
- Panel joints letting water in
What we are called out for in Wilmington
If plants are growing out of a joint, the sealant has generally failed or was never there. Roots and dirt hold water against the wall.
Any of these means the joints need attention:
- Joints with sealant missing in places
- Weeds or debris growing in open joints
- Joints pointed up with cement by mistake
- Panel joints letting water in
If you live in an older home near St Mary and St Peter's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
What to look for in a quote
- When the joint can take water or movement
- Whether you can choose the colour
- How the joint is cleaned and prepared
- Which sealant they’ll use, and why
About our external mastic in Wilmington
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We work on copings & trims, brickwork movement joints and joints between brick and frames, and people most often call us about joints with sealant missing in places and weathered mastic that no longer stretches.
In a village or hamlet like Wilmington, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Wilmington (BN26)
- Region
- East Sussex
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Honest limits
A few problems are outside what sealant work can do:
- Structural movement, which needs a surveyor or engineer
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before booking.
Surfaces we seal
- Copings & trims
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
External mastic in Wilmington: local notes
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Historic houses like Alfriston Clergy House (about 1.9 miles south-west) are a reminder that the area around Wilmington has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
If you let a flat or house near Berwick (Sussex) station, outside joints that have cracked can let damp into a rental, so check them between lets. Managing a site like Willingdon Community School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Wilmington is about 4 miles south-west of Hailsham, in East Sussex. Our applicators cover external mastic for homeowners, landlords and businesses in Wilmington, as part of our work across East Sussex. Across East Sussex, we cover 289 places, and Wilmington is one of them. Brighton is on our list too, around 14 miles away.
Every address in BN26 is covered for external mastic, from the main roads to the quietest streets. That includes homes and businesses on The Street and Ades Field and the roads around them. We also cover Milton Street (1 mile south-west), Winton (2 miles west), Arlington (2 miles north), Berwick (2 miles north-west) and Lullington (2 miles south-west). Larger places within reach include Eastbourne (5 miles south-east), Bexhill-on-Sea (12 miles east), Seaford (5 miles south-west), Lewes (9 miles north-west), Hailsham (4 miles north-east) and Uckfield (11 miles north).
Near you in Wilmington
Around Wilmington, our work takes us to homes and buildings near The Sussex Ox pub and the streets around them. The nearest railway station is Berwick (Sussex) station, about 1.8 miles north-west. Other landmarks nearby include Agricultural Museum (within half a mile south) and Burlough Castle (1 mile west). For a walk, there’s Combe Hill.
Wilmington questions
Can you do external mastic in Wilmington?
Yes, Wilmington is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear price.
I let a flat near Berwick (Sussex) station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
Can I add another job to the visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Where are you based?
We work from Crawley. We cover Wilmington and the rest of East Sussex, along with the rest of our area.
Do you take out the old sealant first?
Yes, every time. New silicone doesn’t stick to old silicone, so any old material comes out before anything new goes in.
Which products do you use?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Can you reach joints on upper floors?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we will confirm what access is needed.
Also near Wilmington
More services for Wilmington
Aftercare tips
Looking after new joints is easy:
- Keep water from gutters off the wall
- Check the sealant is paintable before painting near it
- Keep high-pressure jets off the joints
- Walk round the building once a year and look at the joints
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
What affects the cost of external mastic
We don’t publish a price list, because jobs vary so much. The quote depends on:
- Which sealant suits the joint
- Access and height
- The old material and how stubborn it is
- Whether there’s mould to deal with
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, call 0345 464 0079 or send us an email for an honest opinion and a quote.
What to tell us for a quote
When you call or email, these details help:
- A few pictures by email, if you can
- How many joints, rooms or windows are involved
- The type of property
- Whether it has been sealed before
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and send you a clear quote.
The process
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Wilmington needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
- Clear items away from the joints we are working on
Ask for a quote
To get a quote, call 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Related advice
Landlords, agents and businesses in Wilmington
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.