Brighton and Hove · England
Hanover External Mastic
Movement joints in Hanover need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Brick movement joints where the sealant has split
- Rigid filler in a joint that should flex
- Weeds or debris growing in open joints
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
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.
External mastic in Hanover, done properly
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, leaving it bonded to two faces so it can move with the wall. If you have water getting into walls through failed joints and joints pointed up with cement by mistake, we can help.
Houses in smaller places like Hanover can stand more in the open than those in a built-up town, so exposed walls and rooflines take more wind-driven rain. That’s where gutter joints and wall joints tend to fail first.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Location
- Hanover (BN2, BN1, BN50)
- Wider area
- Brighton and Hove
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Hanover: your questions answered
Can you help a landlord with a rental near Brighton station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Does living near the coast affect external mastic in Hanover?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We explain the product when we quote.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Are you fully insured?
Yes. We are fully insured for every job we do.
Can new sealant go over the old?
No, it won’t last. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
How long does external mastic take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation, including preparation and clearing up. We’ll confirm how long when we quote.
How the visit works
When we arrive, we start by going over the job with you, so you know exactly what we are doing. We protect the surfaces around the joints before any work starts. Most jobs take a few hours to a few days, depending on the length of joint and the access. For a job in Hanover, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Try not to wet indoor joints just before the visit
- Let us know about earlier repairs to the joints
- Mention any parking rules near the property
Getting a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, ring 0345 464 0079 or send us an email.
Advice
Hanover buildings and the weather
Hanover is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Elm Grove Primary School, its movement joints, gutters and trims need looking after like any other building’s. For landlords with property near Brighton station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. In the older streets around Church of the Annunciation, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Hanover is about 1 mile south of Brighton, in Brighton and Hove. If you need external mastic in Hanover, please call 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Brighton and Hove. We cover 30 towns and villages across Brighton and Hove, from the larger towns to small villages.
All of BN2, BN1 and BN50 is covered for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Elmore Road, London Road and Milton Road or a nearby road, we can help. Neighbouring places we cover for external mastic include Brighton (1 mile north), Carlton Hill (1 mile south), West Hill (1 mile west), Seven Dials (1 mile west) and Kemptown (1 mile south-east). Larger places within reach include Brighton and Hove (3 miles west), Aldrington (3 miles west), Hangleton (3 miles north-west), Patcham (3 miles north), Westdene (3 miles north-west) and Saltdean (4 miles south-east). Hanover is one of the larger places we cover in Brighton and Hove.
Local landmarks in Hanover
Around Hanover, our work takes us to homes and buildings near Academy of Creative Training, Brighton Girls and The Dover Castle pub, among other places. The closest station to Hanover is Brighton station, about 0.6 miles west of the centre. Well-known places in the area include Old Police Cells Museum (0.8 miles south-west) and Brighton General Hospital (0.6 miles east). Open spaces near Hanover include Whitehawk Hill and Newmarket Hill.
Why act early in Hanover
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost around the joint, so the damage spreads beyond the joint. Homes in smaller places like Hanover can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Ask us for a quote and we will explain what it covers.
Why Hanover clients choose us
- Experience in homes, commercial sites and hotels
- Rated 4.9 stars on Google
- We never seal over old sealant
- Anti-fungal silicone where joints get wet
How to look after the new joints
Simple care keeps the joints in good condition. We recommend:
- Point out the joints to other trades
- Keep high-pressure jets off the joints
- Act on the first splits you see
- Don’t let climbing plants root in the sealant
Only paint over the joint if we’ve confirmed the sealant can take paint. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
When it isn’t the sealant
In fairness, there are a few things sealant will not fix:
- Walls that need new movement joints cut into them
- Movement that is more than a sealant joint can take
- Failed render or damaged cladding panels
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Brickwork movement joints
- Façade panels
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
Places near Hanover
Also in Hanover
What affects the cost of external mastic
Call for a quick quote. The main things that affect it are:
- Whether there’s mould to deal with
- Whether the work is at height
- The amount of work
- Which sealant suits the joint
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
What we need to know
There’s no need for technical detail. It helps if you can tell us:
- If someone has resealed it before
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before any work starts.
What the job involves on each surface
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. Where one has been mortared, we cut it out and reseal it with sealant where it can be done safely.
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.