East Sussex · England
External & façade joints in Cliffe, East Sussex
External mastic across Cliffe and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Weeds or debris growing in open joints
- Movement joints filled with mortar instead of sealant
- Joints with sealant missing in places
About our external mastic in Cliffe
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a colour to suit. Typical jobs include sealant that has lost its bond to the brick or render and movement joints with cracked, split or missing sealant, across copings & trims, brickwork movement joints and façade panels.
Homes around Cliffe range from older cottages to newer houses, with walls and rooflines of every type. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Cliffe (BN7, BN8)
- Wider area
- East Sussex
- Cover
- 12 months on all our work
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
How the visit works
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours to a few days, depending on the length of joint and the access. For a job in Cliffe, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Clear items away from the joints we are working on
- Mention if the joints have been sealed before
Get a quote
We quote each job on its own. Simply ring 0345 464 0079 or email us and describe the job and send photos if you have them.
Related advice
Work for landlords, hotels and businesses
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
We also work for property managers and facilities teams in Cliffe and across East Sussex. We can quote a run of properties together, and we are fully insured.
Leave it or put it right?
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and does not last. Homes in smaller places like Cliffe can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Why choose Mr Mastic in Cliffe
- We never seal over old sealant
- White, clear, grey or coloured to suit, where the product allows
- 20+ years of sealant experience
- 180+ five-star Google reviews
Read our cost guide or customer reviews.
Common questions in Cliffe
Is Cliffe in your area for external mastic?
Yes. We work across London and the South East, and Cliffe is part of that. Just phone 0345 464 0079 or email us with a few details of the job, and we will give you a clear price.
Do you cover smaller places like Cliffe?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. Then phone 0345 464 0079 or email us.
Can new sealant go over the old?
No. We remove every bit of old sealant first.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We explain the product when we quote.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses, and we are fully insured.
Do you work for letting agents?
Yes, often. We can quote for several properties at once.
How long should I leave it?
Different products cure at different speeds, so follow the cure time we give you.
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Get split or bare joints resealed while the damage is small
- Avoid pressure-washing directly into sealant joints
- Point out the joints to other trades
- Walk round the building once a year and look at the joints
Do not let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
External mastic in Cliffe: local notes
With historic houses such as Anne of Cleves House (about 0.7 miles south-west) nearby, there’s older building stock in the area around Cliffe as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. 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.
In the older streets around Church of St Thomas at Cliffe, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Letting a property close to Lewes station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Cliffe is about 1 mile east of Lewes, in East Sussex. From the centre of Cliffe to the outskirts, we cover external mastic for every kind of property. Our area takes in 289 places across East Sussex, large and small. For nearby work, see our Brighton page, about 7 miles away.
Every address in BN7 and BN8 is covered for external mastic. That includes homes and businesses on Ham Lane, New Road and Court Road and the roads around them. You will find Cliffe on the A26, which makes it straightforward to reach with everything needed for external mastic. Neighbouring places we cover for external mastic include Southover (1 mile south-west), South Malling (1 mile north-west), Lewes (1 mile west), Hamsey (2 miles north) and Offham (2 miles north-west). Larger places within reach include Eastbourne (13 miles south-east), Seaford (8 miles south-east), Hailsham (10 miles east), Crowborough (14 miles north-east), Uckfield (7 miles north-east) and Newhaven (6 miles south).
Landmarks near Cliffe
We work in homes and buildings around Gardeners Arms, Railway Land and Lewes Old Grammar School and the streets around them. Cliffe has its own railway station: Lewes station. Nearby you’ll also find Lewes Castle (0.5 miles west) and Lewes Victoria Hospital (1.1 miles west). Open spaces near Cliffe include Cliffe Hill and Malling Down.
What we can’t put right
In fairness, some problems need a different trade:
- Loose or hollow render, which needs re-rendering
- Cracks in the bricks or render themselves, away from the joints
- Subsidence or other structural problems
If you’re not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Where we work in Cliffe
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Façade panels
- Copings & trims
- Render & cladding joints
When to call us in Cliffe
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. The joint can’t move, so the wall cracks somewhere else instead.
It’s worth asking for a quote if you see:
- Gaps where render, brick and frames meet
- Hard, crazed mastic that has stopped moving
- Plants rooting in failed movement joints
- Movement joints filled with mortar instead of sealant
Schools such as Priory School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Before booking anyone
- How the colour is chosen
- How hidden problems are handled
- Whether they’re fully insured
- How long the guarantee is