Brighton and Hove · England
Brighton and Hove External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Brighton and Hove. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Damp patches traced to an open external joint
- Joints pointed up with cement by mistake
- Joints with sealant missing in places
Questions from Brighton and Hove
Can you help a landlord with a rental near Aldrington station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before any work starts.
Is Brighton and Hove in your area for external mastic?
Yes, Brighton and Hove is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
How do you reach high-level joints?
Each building is different. Tell us the height, the number of joints and what’s below them and we’ll confirm how they can be reached safely.
Where do you work from?
We work from Crawley. Our applicators cover Brighton and Hove, along with the rest of our area.
When will the joints need doing again?
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.
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 usually means someone at home.
Do you guarantee your work?
Yes. There’s a 12-month guarantee on every job, wherever you are.
Do you work for hotels and businesses?
Yes. We can plan bigger jobs in stages to suit the site.
External mastic for homes and businesses in Brighton and Hove
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. Common call-outs are for joints with sealant missing in places and plants rooting in failed movement joints, across render & cladding joints, joints between brick and frames and concrete & block.
Brighton and Hove mixes older houses and their gutters with newer estates of brick, render and uPVC trims. All of those joints move, so they need a flexible sealant rather than a rigid filler.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Place
- Brighton and Hove (BN3, BN41, BN1)
- Region
- Brighton and Hove
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What external mastic looks like in Brighton and Hove
Brighton and Hove is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Historic houses like Portslade Manor (about 1.3 miles west) are a reminder that the area around Brighton and Hove has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
If you let a flat or house near Aldrington station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you look after a building such as West Hove Infant School, larger buildings have long runs of movement joint that eventually need resealing.
Brighton and Hove is in England. Whether you are in the middle of Brighton and Hove or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. We cover 30 towns and villages across Brighton and Hove.
Work in BN3, BN41 and BN1 is quoted and booked the same way as anywhere else. Local streets include New Church Road, Princes Square and Station Road, and we cover them all. You will find Brighton and Hove on the A270 and A293, so it’s easy for us to get to. We also cover the places around Brighton and Hove: Aldrington (1 mile south-west), West Blatchington (1 mile north-east), Hove (1 mile south-east), Prestonville (2 miles east) and Brunswick (2 miles south-east). Larger places within reach include Brighton (3 miles east), Carlton Hill (3 miles east), Hanover (3 miles east), Kemptown (3 miles south-east), Hollingdean (3 miles east) and Whitehawk (4 miles east).
Near you in Brighton and Hove
In Brighton and Hove, that means homes and buildings near Hove Park, The Drive Prep School and Hove Park School, among other places. There’s a railway station in Brighton and Hove itself: Aldrington station. Nearby you’ll also find British Engineerium (0.7 miles north-east) and Churchill Square (2.1 miles south-east). The countryside around Brighton and Hove includes Thundersbarrow Hill and Ladies Mile.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
How to look after the new joints
A little care helps the new joints last. We recommend:
- Have failed joints looked at early
- Keep movement joints as flexible joints, not mortar
- Wash walls gently around the sealant
- Look over the joints every year, ideally after winter
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges and let water in behind.
Act while the splits are small. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
What the job involves on each surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
What we are called out for in Brighton and Hove
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it cannot stretch and rips as the joint opens.
Signs it’s time to call us include:
- Hard, crazed mastic that has stopped moving
- Panel joints letting water in
- Moss and dirt in joints with no sealant left
- Failed seals between different materials
If you live in an older home near Holy Cross Church, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
What to look for in a quote
- How the joint is cleaned and prepared
- Whether VAT is included
- How the colour is chosen
- Whether all the old sealant comes out first
Also near Brighton and Hove
Other services in Brighton and Hove
The process
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take a few hours to a few days, depending on the length of joint and the access. In Brighton and Hove, parking is rarely complicated, though it helps to know about driveways or restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires 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
- Clear the area around the work
- Mention any sign-in or site rules at work premises
- Let us know about parking restrictions
Get a quote
Every job is quoted individually. Just ring 0345 464 0079 or drop us an email with the details and send photos if you have them.
Read more
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
What happens if it’s left?
Sealing over the top of old mastic doesn’t hold for long. The new layer can’t bond properly to old, weathered material, so we always take the old sealant out. Gaps in sealant and mould in the bead never get better on their own, and in a busy home in Brighton and Hove they get worse with every use. Now is the easy time to put it right.
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email and we’ll talk you through it.
What you get with us
- A choice of colours where the product allows
- Full insurance on every job
- Approved under the ARBOMaster scheme
- More than 20 years in sealant work
Take a look at how sealant jobs are priced or customer reviews.