East Sussex · England
External Mastic in Rock-a-Nore
Our applicators work in Rock-a-Nore on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Movement joints filled with mortar instead of sealant
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
What happens on the day
We bring everything the job needs with us, so you don’t need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for a handful of joints, longer for a whole elevation. For a job in Rock-a-Nore, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any leaks or damp you’ve noticed
- Let us know about earlier repairs to the joints
Get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is. Whenever you’re ready, ring 0345 464 0079 or drop us an email.
Related advice
External mastic for homes and businesses in Rock-a-Nore
Low-level joints can generally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what access is needed. We work on brickwork movement joints, render & cladding joints and façade panels, and the jobs we see most are hard, crazed mastic that has stopped moving and brick movement joints where the sealant has split.
Around Rock-a-Nore, garages, outbuildings and extensions all add to the joints on the outside of a home. Leaks usually start at a gutter end, a garage door frame or where an extension meets the house.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Location
- Rock-a-Nore (TN34, TN35)
- Region
- East Sussex
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Rock-a-Nore buildings and the weather
Rock-a-Nore is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Ore station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies. Schools such as Ark Castledown Primary Academy are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Rock-a-Nore is about 2 miles south-east of Hastings, in East Sussex. For external mastic in and around Rock-a-Nore, it’s easy to get a quote: please phone 0345 464 0079 or email us. We’re based in Crawley and cover East Sussex, Rock-a-Nore included. Rock-a-Nore is one of 289 towns and villages in East Sussex we cover for external mastic. We also work in Brighton, around 32 miles away.
Here we cover the TN34 and TN35 postcode area for external mastic. Whether your property is on Crown Lane, Croft Road and Queens Road or anywhere close by, we can help. We also cover the places around Rock-a-Nore: Hastings Old Town (1 mile north-west), Belmont (1 mile north-west), America Ground (1 mile west), Blacklands (1 mile north-west) and St Helen's (1 mile north-west). Larger places within reach include Eastbourne (14 miles west), Bexhill-on-Sea (6 miles west), Hailsham (15 miles west), Polegate (15 miles west), Upper Horsebridge (15 miles west) and Langney (13 miles west).
Near you in Rock-a-Nore
Locally, jobs take us to homes and businesses close to The Dolphin pub, Linton Gardens and Roman Catholic Church of St Mary Star of the Sea. Also close by are William Parker Sports College (1.8 miles north-west) and University School (1 mile west). Rock-a-Nore’s nearest station is Ore station, about 0.8 miles north of the centre. A little further out are Flower Makers Museum (less than half a mile west) and Priory Meadow Shopping Centre (0.6 miles west). Open spaces near Rock-a-Nore include Church Wood and Robsack Wood.
Surface by surface
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. We prime where the product needs it.
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. A primer goes on where the product requires one before the bead.
What we cannot put right
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Cracked brickwork or render that needs a builder or plasterer
- Subsidence or other structural problems
- Rising or penetrating damp from elsewhere in the wall
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Render & cladding joints
- Concrete & block
- Copings & trims
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
Rock-a-Nore questions
Is external mastic in a coastal place like Rock-a-Nore any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are generally the first to need attention.
Is Rock-a-Nore 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.
How do I get a quote for external mastic in Rock-a-Nore?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Can I add another job to the visit?
Yes. Just list everything you need and you’ll get one quote.
What colours does the sealant come in?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It sets the sealant depth and prevents three-sided bonding so the bead can stretch.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you when we finish.
What we are called out for in Rock-a-Nore
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:
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
- Sealant that has lost its bond to the brick or render
- Cracked joints where brick meets render or frames
In the older streets around Ebenezer Particular Baptist Chapel, an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- How the joint is cleaned and prepared
- Who turns up on the day
- Whether all the old sealant comes out first
- What the cure time is
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether the work is at height
- The number and length of the joints
- The number of rooms or windows
- Any working-time requirements on site
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Asking for a quote
You don’t need to know the technical terms. It helps if you can tell us:
- How we’d reach the joints
- Photos by email, if that is easy
- Whether it has been sealed before
- What’s wrong with the joints now
For a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before any work starts.
Leave it or put it right?
Resealing a run of joints in one go is generally better than patching one at a time. Joints of the same age tend to fail together. In a smaller place like Rock-a-Nore, wherever a wall is exposed, a failed outside joint is a real source of damp. Indoors, a failed seal lets water into floors and panels as it would anywhere.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
Why book with us
- We never seal over old sealant
- Homes, businesses and hotels
- We’re fully insured
- White, clear, grey or another colour, product permitting
Read what affects the cost or customer reviews.
Towns and villages near Rock-a-Nore
More services for Rock-a-Nore
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
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.