West Sussex · England
Fulking External Mastic
External mastic in Fulking from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Plants rooting in failed movement joints
- Leaking joints around cladding and façade panels
- Hard, crazed mastic that has stopped moving
External mastic in Fulking
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. We’re often asked to deal with damp patches traced to an open external joint and old sealant gone brittle and cracked, on render & cladding joints, façade panels and copings & trims.
External sealant needs dry, clean surfaces, so work around Fulking is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Location
- Fulking (BN5)
- Wider area
- West Sussex
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
The process
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. In total, it generally takes a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Fulking, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Tell us about any water getting in
- Let us know about earlier repairs to the joints
- Mention any parking rules near the property
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or drop us an email with the details and send pictures if you have them.
Advice
When something else is needed
New sealant can’t fix everything, and we’ll tell you before we start. Sealant won’t put right:
- Walls that need new movement joints cut into them
- Loose or hollow render, which needs re-rendering
- Subsidence or other structural problems
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer.
Where we work in Fulking
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Façade panels
- Brickwork movement joints
- Concrete & block
How the job changes by surface
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. We prime where the sealant needs it before sealing.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so the movement is taken up.
Fulking buildings and the weather
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Portslade Manor (about 3.3 miles south) nearby, there’s older building stock in the area around Fulking as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
For an older house near a landmark such as The Church of the Holy Trinity, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Fulking is about 4 miles north-west of Brighton and Hove, in West Sussex. We carry out external mastic for householders, landlords and businesses in Fulking and the surrounding area. Our West Sussex coverage runs to 371 places, Fulking among them. Brighton is on our list too, around 6 miles away.
Postcode districts we cover here for external mastic: BN5. If you’re just outside Fulking, we cover Poynings (1 mile north-east), Hangleton (3 miles south), Castle Town (3 miles west), Portslade (3 miles south) and Kingston by Sea (4 miles south). We also work in nearby towns such as Crawley (15 miles north), Horsham (13 miles north), Worthing (9 miles south-west), Haywards Heath (9 miles north-east), Burgess Hill (6 miles north-east) and Littlehampton (14 miles west).
Landmarks near Fulking
Around Fulking, our work takes us to homes and buildings near The Shepherd And Dog Public House, among other places. The closest station to Fulking is Portslade station, about 3.9 miles south of the centre. Nearby you’ll also find Clayton Castle (3.7 miles east) and Southlands Hospital (3.7 miles south). Green spaces nearby include Truleigh Hill and Woods Mill.
Landlord and commercial work in Fulking
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Keep soil, plants and ivy away from the joints
- Ask before painting over external sealant
- Have failed joints looked at early
- Walk round the building once a year and look at the joints
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
Nearby places to Fulking
More services for Fulking
Fulking questions
Do you cover smaller places like Fulking?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Portslade station. Can you help?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. The sealant is matched to both sides.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
How often do external joints need resealing?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
How much does external mastic cost in Fulking?
Size, access and the old material all affect the cost. Call for a quick quote.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
What we are called out for in Fulking
Some movement joints have been pointed up with mortar. The joint cannot move, so the wall cracks somewhere else instead.
Most people get in touch after spotting something like this:
- Weathered mastic that no longer stretches
- Brick movement joints where the sealant has split
- Damp patches traced to an open external joint
- Movement joints filled with mortar instead of sealant
If you let a flat or house near Portslade station, split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- How long the guarantee is
- What product goes in the joint
- How the colour is chosen
- What the cure time is
Why deal with it now?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. In a small place like Fulking, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or send us an email and we will talk you through it.
What you get with us
- Rated 4.9 stars on Google
- Quality sealants from Arbo and Everbuild
- More than 20 years in sealant work
- A choice of colours where the product allows
Read our cost guide or our reviews.