East Sussex · England
External & façade joints in Filching, East Sussex
Professional external mastic in and around Filching, with old sealant always removed completely and a 12-month guarantee.
- Gaps where render, brick and frames meet
- Weathered mastic that no longer stretches
- Plants rooting in failed movement joints
FAQs for Filching
Do you work for landlords with property near Polegate station?
Yes, we work for letting agents and landlords. Just phone 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear quote.
Can you do external mastic in Filching?
Yes, Filching is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job, and we will send you a clear quote.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
How long will you be here?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Larger jobs naturally take longer.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Is it OK to seal over old sealant?
No, because it fails. We remove every bit of old sealant first, so the new sealant bonds properly.
What’s an expansion joint in brickwork?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Do I need to be at home?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
External mastic in Filching, done properly
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing and we use one wherever it does. If you have cracked joints where brick meets render or frames and damp patches traced to an open external joint, we can help.
In a village or hamlet like Filching, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
There’s a 12-month guarantee on every job, whatever its size.
- Location
- Filching (BN26)
- Region
- East Sussex
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Outside joints around Filching
With historic houses such as Alfriston Clergy House (about 2.9 miles west) nearby, there’s older building stock in the area around Filching as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you look after a building such as Willingdon Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. In the older streets around The Parish Church of Saint Peter, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Filching is about 3 miles north-west of Eastbourne, in East Sussex. If you need external mastic in Filching, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover East Sussex, Filching included. Our East Sussex coverage runs to 289 places, Filching among them. Brighton is on our list too, about 16 miles from Filching.
Every address in BN26 is covered for external mastic. Close by, we work in Wannock (1 mile north-east), Folkington (1 mile north-west), Lower Willingdon (1 mile east), Willingdon (1 mile east) and Polegate (2 miles north-east). Within a short drive, we also cover Eastbourne (3 miles south-east), Hastings (15 miles east), Bexhill-on-Sea (11 miles east), Seaford (5 miles west), Lewes (11 miles north-west) and Hailsham (4 miles north).
Around Filching
Typical jobs here are in homes near The Eight Bells Inn and Willingdon Community School. The closest station to Filching is Polegate station, roughly 1.5 miles north-east. A little further out are Burlough Castle (2.5 miles west) and Eastbourne District General Hospital (2.3 miles south-east). Not far away are Combe Hill.
Do you need external mastic in Filching?
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
The most common problems we see are:
- Panel joints letting water in
- Hard, crazed mastic that has stopped moving
- Rain getting behind render or cladding at a joint
- Rigid filler in a joint that should flex
If you let a flat or house near Polegate station, split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- How the joint is cleaned and prepared
- Which sealant they’ll use, and why
- What the quote includes, VAT included or not
- Whether they’re fully insured
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Keep water from gutters off the wall
- Keep movement joints as flexible joints, not mortar
- Leave the joints unpainted unless we have said otherwise
- Tell anyone working on the walls about the movement joints
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.
What the job involves on each surface
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. Their movement joints are sealed over backing rod with a flexible sealant.
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible in all weathers.
What happens on the day
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes anything from a few hours to several days, depending on the building. In a small place like Filching, access is generally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
- Clear items away from the joints we are working on
Getting a quote
We quote each job on its own. Simply phone 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
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Why it’s worth doing now in Filching
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost, so the problem grows beyond the joint itself. Older cottages and farmhouses around Filching can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why us?
- Over 20 years’ experience
- Old sealant always removed completely
- Approved under the ARBOMaster scheme
- Tidy, careful work
Take a look at how sealant jobs are priced or customer reviews.
Landlord and commercial work in Filching
For anyone letting property in or around Filching, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.