East Sussex · England
External Mastic in High Hurstwood
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in High Hurstwood. Fully insured, ARBOMaster approved and guaranteed for a year.
- Joints pointed up with cement by mistake
- Brick movement joints where the sealant has split
- Sealant pulling away from one side of the joint
Surface by surface
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joints work hard every day. The sealant is chosen with that in mind.
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
About our external mastic in High Hurstwood
Low-level joints can normally be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what access is needed. We work on joints between brick and frames, façade panels and brickwork movement joints, and the jobs we see most are joints pointed up with cement by mistake and weathered mastic that no longer stretches.
Around High Hurstwood, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
A 12-month guarantee comes as standard.
- Location
- High Hurstwood (TN22)
- Region
- East Sussex
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
What happens on the day
On the day, there’s very little for you to do. Show us the job and we will take it from there. The work itself takes anything from a few hours to several days, depending on the building, including the tidy-up. Somewhere as small as High Hurstwood, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Before we arrive
- Keep pets and children clear of the area while we work
- Where the joints are inside, avoid wetting them before we arrive
- Move anything stored near the joints
Get a quote
Want a quote for external mastic? Please phone 0345 464 0079 or drop us an email with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
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High Hurstwood: your questions answered
Is High Hurstwood in your area for external mastic?
Yes. Our work covers London and the South East, and High Hurstwood is part of that. Just call 0345 464 0079 or email us with a few details of the job.
Can you help a landlord with a rental near Buxted station?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Do you seal joints where cladding meets other materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Can I add another job to the visit?
Of course. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Should I point up the gap in my brickwork?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose and can lead to cracking. We will reseal it with a flexible sealant.
Why act early in High Hurstwood
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. Too stiff a sealant can pull at the edges and break them. Older cottages and farmhouses around High Hurstwood can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Combining jobs into one visit normally makes better use of the time than several visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
Why choose Mr Mastic in High Hurstwood
- 20+ years of sealant experience
- One-year guarantee on every job
- White, clear, grey or coloured to suit, where the product allows
- We leave the area clean and tidy
Take a look at our cost guide or what customers say.
Signs you need external mastic in High Hurstwood
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
If you can see any of these, it’s time to have the joints looked at:
- Hard, crazed mastic that has stopped moving
- Movement joints filled with mortar instead of sealant
- Movement joints with cracked, split or missing sealant
- Sealant that has lost its bond to the brick or render
If you look after a building such as High Hurstwood Church of England Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What to look for in a quote
- Whether they seal over old material or remove it
- Who turns up on the day
- How the surfaces are prepared before sealing
- Whether they’re fully insured
Landlord and commercial work in High Hurstwood
If you manage several properties in or around High Hurstwood, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
External mastic in High Hurstwood: local notes
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 split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Holy Trinity Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
High Hurstwood is about 3 miles south-west of Crowborough, in East Sussex. Whether you are in the middle of High Hurstwood or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Our area takes in 289 places across East Sussex. You can also see our page for Crawley, roughly 15 miles from High Hurstwood.
Our applicators cover all of the TN22 postcode area for external mastic. Whether your property is on Burnt Oak Road, Chillies Lane and Perrymans Lane or a nearby road, our applicators can take on the job. If you’re just outside High Hurstwood, we cover Fairwarp (1 mile west), Sweethaws (1 mile north), Five Ash Down (1 mile south-west), Crowborough (3 miles north-east) and Jarvis Brook (3 miles north-east). Further out, we also cover Lewes (11 miles south-west), Hailsham (12 miles south-east), Uckfield (4 miles south), Polegate (14 miles south), South Malling (11 miles south-west) and Heathfield (6 miles south-east).
What’s near High Hurstwood
The closest station to High Hurstwood is Buxted station, about 1.8 miles south of the centre. A little further out are Tickerage Castle (3.3 miles south) and Crowborough War Memorial Hospital (2.7 miles north-east). Open spaces near High Hurstwood include Brickfield Meadow.
Towns and villages near High Hurstwood
What else we do in High Hurstwood
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
When it isn’t the sealant
It helps to know what we cannot do too:
- Loose or hollow render, which needs re-rendering
- Cracking across the wall rather than at a joint
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can ring 0345 464 0079 or email us and we will tell you honestly.
Surfaces we seal
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Façade panels
- Brickwork movement joints
- Copings & trims