East Sussex · England
External & façade joints in Horam, East Sussex
Professional external mastic in and around Horam, with old sealant always removed completely and a one-year guarantee.
- Joints where the bead has come unstuck
- Hard, crazed mastic that has stopped moving
- Plants rooting in failed movement joints
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
How we handle external mastic in Horam
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. We work on copings & trims, façade panels and brickwork movement joints, and the jobs we see most are plants rooting in failed movement joints and sealant pulling away from one side of the joint.
Around Horam, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in.
You get a one-year guarantee, the same in Horam as everywhere else we work.
- Place
- Horam (TN21)
- Region
- East Sussex
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Why act early in Horam
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together, and access only has to be arranged once. Around Horam, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why Horam customers choose us
- You choose the colour before work begins
- Sealant colour chosen to suit
- Over 20 years’ experience
- Old sealant always removed completely
Take a look at our cost guide and customer reviews.
What sealant work cannot fix
It helps to know what we cannot do:
- Structural movement, which needs a surveyor or engineer
- Render that is blown, hollow or coming away
- Cracking across the wall rather than at a joint
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Joints and surfaces we work on
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Copings & trims
Signs you need external mastic in Horam
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, so it pulls away from the edges.
The most common problems we see are:
- Joints pointed up with cement by mistake
- Joints where the bead has come unstuck
- Old sealant gone brittle and cracked
- Damp patches traced to an open external joint
In the older streets around Christ Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What to look for in a quote
- When the joint can take water or movement
- Whether the sealant suits the joint
- Whether all the old sealant comes out first
- Whether they’re fully insured
How the job changes by surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
Render joints
Rendered walls have joints at beads, openings and changes of material. We reseal them with a flexible exterior sealant that suits the render colour.
Horam buildings and the weather
With historic houses such as Horselunges Manor (about 3.2 miles south) nearby, there’s older building stock in the area around Horam as well as newer homes. Where a home is older, 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, 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 Maynards Green Community Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Horam is about 5 miles north of Hailsham, in East Sussex. Across the TN21 area, we cover external mastic for homes and businesses. Across East Sussex, we cover 289 places, Horam among them. You can also see our page for Brighton, about 18 miles away.
Here we cover the TN21 postcode area for external mastic. That includes homes and businesses on Little London Road, Toll Wood Road and Beauford Road and the roads around them. We also cover Burlow (1 mile south-west), Vines Cross (1 mile east), Maynard's Green (1 mile north), Lions Green (1 mile north-west) and Warbleton (2 miles east). We also work in nearby towns such as Eastbourne (10 miles south), Hastings (15 miles east), Bexhill-on-Sea (11 miles south-east), Seaford (12 miles south-west), Lewes (11 miles west) and Hailsham (5 miles south).
What’s near Horam
In Horam, that means homes and buildings near Horam Inn. Nearby you’ll also find Sussex Farm Museum (within half a mile north-west) and Hellingly Hospital Railway (3.1 miles south). For a walk, there’s Selwyns Wood.
FAQs for Horam
Do you cover smaller places like Horam?
Yes. Horam is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Horam in your area for external mastic?
Yes. We work across London and the South East, and Horam is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job.
Do you have insurance?
Yes. We’re fully insured for every job we do.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
I’m a tenant. Can you help?
We can work for tenants, landlords or agents. Just make sure your landlord agrees.
Can you match the colour of my brickwork?
The aim is a neat, even joint in a colour that suits the wall. Colour is agreed with you before we begin from the range available.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses.
The process
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Horam needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. 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.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
- Try not to wet indoor joints just before the visit
Ask for a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or email us.
Read more
What else we do in Horam
What affects the quote in Horam
Jobs vary more than people expect. What affects the quote:
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- The product the joint needs
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and send you a clear quote before work begins.
What to tell us for a quote
There’s no need for technical detail. Just tell us:
- The problem you’ve noticed
- Where the job is, and your postcode
- How we’d reach the joints
- A few photos by email, if you can
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.