East Sussex · England
External Mastic in Horney Common
External mastic across Horney Common and nearby, with old sealant always removed completely.
- Sealant pulling away from one side of the joint
- Rigid filler in a joint that should flex
- Hard, crazed mastic that has stopped moving
External mastic in Horney Common
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. We work on render & cladding joints, joints between brick and frames and concrete & block, and the jobs we see most are rigid filler in a joint that should flex and weathered mastic that no longer stretches.
Somewhere as small as Horney Common, homes and farm buildings often face open ground, 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.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Horney Common (TN22)
- Wider area
- East Sussex
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
To keep the joints looking good and working properly:
- Get split or bare joints resealed while the damage is small
- Check external joints each spring
- Point out the joints to other trades
- Avoid pressure-washing directly into sealant joints
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
The process
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to several days, depending on the building. Somewhere like Horney Common needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
- Clear the area around the work
How to get a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job.
Related advice
What we cannot put right
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
- Failed render or damaged cladding panels
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before you book.
Surfaces we seal
- Façade panels
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Render & cladding joints
Horney Common buildings and the weather
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Letting a property close to Buxted station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Horney Common is about 3 miles north of Uckfield, in East Sussex. From the centre of Horney Common to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our East Sussex coverage runs to 289 places, Horney Common among them. You can also see our page for Crawley, roughly 13 miles from Horney Common.
Work in TN22 is quoted and booked the same way as anywhere else. If you need external mastic at a property on Old Forge Lane and Tylers Lane or a nearby road, we can help. Neighbouring places we cover for external mastic include Nutley (2 miles north-west), Duddleswell (2 miles north), Furner's Green (3 miles west), Chelwood Common (3 miles north-west) and Chelwood Gate (4 miles north-west). Further out, we also cover Lewes (10 miles south), Hailsham (13 miles south-east), Crowborough (5 miles north-east), Uckfield (3 miles south), Newhaven (15 miles south) and Peacehaven (15 miles south).
Local landmarks in Horney Common
In Horney Common, that means homes and buildings near The Foresters Arms, among other places. For rail, the closest station is Buxted station, roughly 2.8 miles south-east of the centre. A little further out are Uckfield Community Hospital (3.5 miles south) and Tickerage Castle (4.3 miles south-east). Not far away are Brickfield Meadow.
DIY versus a professional finish
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
How we quote for external mastic
We don’t publish a price list. The quote depends on:
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- Which sealant suits the joint
- Working hours on commercial sites
Combining jobs into one visit usually makes better use of the time than several visits. We will give you a clear price for the lot.
What to tell us for a quote
When you contact us, it’s useful to know:
- Where the property is
- The type of property
- Any previous sealing or DIY work
- Photos by email, if that’s easy
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Places near Horney Common
What else we do in Horney Common
Landlord and commercial work in Horney Common
Landlords and letting agents in Horney Common can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
Signs you need external mastic in Horney Common
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it cannot stretch and tears as soon as the joint widens.
Look out for these signs:
- Leaking joints around cladding and façade panels
- Failed seals between different materials
- Old sealant gone brittle and cracked
- Sealant that has lost its bond to the brick or render
Homes close to Christ Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Comparing quotes
- What preparation is included
- Is the old sealant removed completely?
- What guarantee comes with the work
- How long to leave it before use
Horney Common questions
Is Horney Common within the area you cover?
Yes, Horney Common is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Buxted station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or email us and tell us about the property, and we will give you a clear quote.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used.
What is a movement joint?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
What does external mastic cost?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can you quote for more than one area?
Yes. Tell us about everything you’d like done and we will quote it together.
When will the joints need doing again?
There’s no fixed answer: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Every job carries our 12-month guarantee.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.