East Sussex · England
External & façade joints in Broad Oak, East Sussex
Sealing brickwork movement joints, render, cladding and façade joints for Broad Oak, backed by a 12-month guarantee. Ask us for a quote.
- Movement joints with cracked, split or missing sealant
- Failed seals between different materials
- Hard, crazed mastic that has stopped moving
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
About our external mastic in Broad Oak
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement. We work on concrete & block, joints between brick and frames and copings & trims, and people most often call us about leaking joints around cladding and façade panels and sealant that has lost its bond to the brick or render.
Older homes in small places like Broad Oak may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
We stand behind the work with a one-year guarantee, so you’re covered after we’ve gone.
- Location
- Broad Oak (TN21)
- Region
- East Sussex
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Your questions about external mastic in Broad Oak
Can you do external mastic in Broad Oak?
Yes, Broad Oak is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Is Broad Oak within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
How long does external mastic take?
A typical job takes anything from a few hours to several days, depending on the building, including the preparation. We will confirm how long when we quote.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
What’s an expansion joint in brickwork?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It should be filled with flexible sealant, never mortar.
Towns and villages near Broad Oak
Also in Broad Oak
Honest limits
We’ll always be straight with you, so here’s what new sealant won’t do:
- Damp that isn’t coming from the joint
- Cracking across the wall rather than at a joint
- Walls that need new movement joints cut into them
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
Surfaces we seal
- Copings & trims
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Façade panels
- Render & cladding joints
External mastic in Broad Oak: local notes
With historic houses such as Bateman's (about 4.2 miles east) nearby, there’s older building stock in the area around Broad Oak as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. 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.
Schools such as Broad Oak Community Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. For landlords with property near Stonegate station, split movement joints are easy to miss on a rental until damp shows inside. Homes close to Ebenezer Chapel include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Broad Oak is about 7 miles south-east of Crowborough, in East Sussex. We carry out external mastic for householders, landlords and businesses in Broad Oak. Our area takes in 289 places across East Sussex, large and small. You can also see our page for Brighton, about 21 miles away.
All of TN21 is within our area for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Halley Road, Burwash Road and Highview Road or anywhere close by, we can help. If you’re just outside Broad Oak, we cover Cade Street (1 mile south-west), Old Heathfield (1 mile south), Heathfield (2 miles south-west), Sandy Cross (2 miles south-west) and Maynard's Green (3 miles south-west). Within a short drive, we also cover Eastbourne (13 miles south), Hastings (14 miles south-east), Bexhill-on-Sea (12 miles south-east), Lewes (14 miles south-west), Hailsham (8 miles south) and Crowborough (7 miles north-west).
Near you in Broad Oak
Around Broad Oak, our work takes us to homes and buildings near Heathfield Community College, among other places. For rail, the closest station is Stonegate station, about 4.5 miles north-east. Well-known places in the area include Old Castle (3.7 miles south-east) and Sussex Farm Museum (3.6 miles south-west). The countryside around Broad Oak includes Selwyns Wood.
How the job changes by surface
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
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.
How it works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, do the work and tidy away. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Somewhere like Broad Oak needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Try not to wet indoor joints just before the visit
- Tell us about any previous sealing or DIY attempts
How to get a quote
Need a quote? Please phone 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Landlord and commercial work in Broad Oak
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
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.
Leave it or put it right?
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 problem grows beyond the joint itself. In a small place like Broad Oak, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why choose Mr Mastic in Broad Oak
- A sealant colour to suit the surroundings
- Anti-fungal sanitary silicone in wet areas
- A 12-month guarantee on all work
- Quality sealants from Arbo and Everbuild
See what affects the cost and our reviews.
What affects the quote in Broad Oak
For a quick quote, just ask. The main things that affect it are:
- The size of the job
- How many rooms, windows or areas are involved
- The type of sealant required
- When we can work, for business premises
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or drop us an email for an honest opinion and a quote.
What to tell us for a quote
To make quoting easier, let us know:
- How we’d reach the joints
- The problem you’ve noticed
- The rough size of the job
- The address or postcode of the job
We quote each job on its own, so start by telling us what you need. Simply phone 0345 464 0079 or email us and describe the job and send photos if you have them.