East Sussex · England
Sedlescombe External Mastic
We cover Sedlescombe for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Joints where the bead has come unstuck
- Joints with sealant missing in places
- Water getting into walls through failed joints
About our external mastic in Sedlescombe
Movement joints let brickwork, render and cladding expand and shrink without cracking. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. If you have plants rooting in failed movement joints and leaking joints around cladding and façade panels, we can help.
In a village or hamlet like Sedlescombe, older cottages and farm buildings often stand in the open, 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.
Each job carries a 12-month guarantee.
- Where
- Sedlescombe (TN33)
- Wider area
- East Sussex
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Why deal with it now?
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 Sedlescombe, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Why choose Mr Mastic in Sedlescombe
- We leave the area clean and tidy
- White, clear, grey or coloured to suit, where the product allows
- Colour picked to suit the job
- Homes, businesses and hotels
Read our cost guide or what customers say.
What the job involves on each surface
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
What affects the cost of external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Mould in or behind the old joints
- Working hours on commercial sites
- How much there is to do
- How much old sealant there is and how hard it is to remove
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email and we will talk you through it.
Asking for a quote
When you call or email, it’s useful to know:
- Any access issues, like height or stairs
- Any previous sealing or DIY work
- A few photos by email, if you can
- Where the job is, and your postcode
Need a quote? Please phone 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear quote before we start.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
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.
Common problems we fix in Sedlescombe
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and tears as soon as the joint widens.
It’s worth asking for a quote if you see:
- Movement joints with cracked, split or missing sealant
- Old sealant gone brittle and cracked
- Joints pointed up with cement by mistake
- Sealant that has lost its bond to the brick or render
For landlords with property near Battle station, split movement joints are easy to miss on a rental until damp shows inside.
Comparing quotes
- Whether they’re fully insured
- Whether all the old sealant comes out first
- Which colour the sealant will be
- How hidden problems are handled
How it works
On the day, 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. The work usually takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Sedlescombe, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- 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.
How to prepare
- Keep children and pets away from the work area
- Tell us about any previous sealing or DIY attempts
- Let us know about parking restrictions
Getting a quote
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, and add photos by email if you can.
Advice
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Clear growth from the base of walls and joints
- Act on the first splits you see
- Keep high-pressure jets off the joints
- Make sure movement joints are not pointed over
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal.
Sedlescombe buildings and the weather
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Durhamford Manor (about 0.7 miles north-west) nearby, there’s older building stock in the area around Sedlescombe as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For an older house near a landmark such as The Parish Church of St John the Baptist, old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you look after a building such as Sedlescombe CofE Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Sedlescombe is about 5 miles north of Hastings, in East Sussex. Our applicators cover external mastic for homes and businesses in Sedlescombe and nearby, as part of our work across East Sussex. Across East Sussex, we cover 289 places, Sedlescombe among them. Brighton is on our list too, about 30 miles from Sedlescombe.
All of TN33 is covered for external mastic. External mastic is available to properties on The Street, Orchard Way and Park Shaw and the roads around them. Other places close to Sedlescombe include Whatlington (1 mile west), Kent Street (2 miles south), Swaile's Green (2 miles north), Cripp's Corner (2 miles north) and Telham (2 miles south-west). Larger places within reach include Eastbourne (15 miles south-west), Hastings (5 miles south), Bexhill-on-Sea (7 miles south-west), Hailsham (13 miles west), St Leonards (6 miles south) and Polegate (15 miles south-west).
Local landmarks in Sedlescombe
Sedlescombe’s nearest station is Battle station, about 2.3 miles south-west. Well-known places in the area include Nortons Farm Museum (1.3 miles south) and Conquest Hospital (3.8 miles south). Green spaces nearby include Senlac Hill and Church Wood and Robsack Wood.
FAQs for Sedlescombe
Is Sedlescombe in your area for external mastic?
Yes, Sedlescombe is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Is Sedlescombe within the area you cover?
Yes, Sedlescombe is covered. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What is backing rod for?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
Do you work for landlords and businesses?
Yes. We work in homes, commercial premises and hotels, and we’re fully insured.
Is there a guarantee?
Yes. All our work carries a one-year guarantee.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
How do I get a quote for external mastic in Sedlescombe?
It depends on the job, so we quote each one individually. To get one, phone 0345 464 0079 or send us an email with a short description of the job.
What colours does the sealant come in?
We aim for a joint that suits the wall rather than one that jumps out. Colour is agreed with you before we begin.