East Sussex · England
External Mastic in Upper Wellingham
Specialist external mastic for Upper Wellingham: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Weathered mastic that no longer stretches
- Sealant pulling away from one side of the joint
- Water getting into walls through failed joints
Surface by surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it and keep the sealant to the right depth.
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
External mastic in Upper Wellingham
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. We are often asked to deal with joints with sealant missing in places and old sealant gone brittle and cracked, across render & cladding joints, brickwork movement joints and joints between brick and frames.
Somewhere as small as Upper Wellingham, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Where
- Upper Wellingham (BN8)
- Wider area
- East Sussex
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost around the joint, so the problem grows beyond the joint itself. Around Upper Wellingham, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or send us an email and we’ll talk you through it.
Why choose Mr Mastic in Upper Wellingham
- Colour agreed with you before any work starts
- Approved under the ARBOMaster scheme
- 20+ years of sealant experience
- White, clear, grey or another colour, product permitting
See what affects the cost and what customers say.
Places near Upper Wellingham
More services for Upper Wellingham
Outside joints around Upper Wellingham
Historic houses like Glyndebourne (about 2.2 miles south-east) are a reminder that the area around Upper Wellingham has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Cooksbridge station, outside joints that have cracked can let damp into a rental, so check them between lets. Schools such as Ringmer Community College and Sixth Form are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Upper Wellingham is about 2 miles north-east of Lewes, in East Sussex. We carry out external mastic for homeowners, landlords and businesses in Upper Wellingham and the surrounding area. Upper Wellingham is one of 289 towns and villages in East Sussex we cover. For nearby work, see our Brighton page.
Work in BN8 works the same way as everywhere else we cover. Neighbouring places we cover for external mastic include Barcombe Mills (1 mile north), Norlington (1 mile south-east), Barcombe (1 mile north-west), Barcombe Cross (2 miles north-west) and Broyle Side (2 miles east). Further out, we also cover Eastbourne (14 miles south-east), Seaford (9 miles south), Hailsham (10 miles east), Crowborough (12 miles north-east), Uckfield (5 miles north-east) and Newhaven (8 miles south).
Near you in Upper Wellingham
In Upper Wellingham, that means homes and buildings near The Cock Inn. For rail, the closest station is Cooksbridge station, about 2.1 miles west. Other landmarks nearby include Lewes Castle (2.6 miles south-west) and Lewes Victoria Hospital (2.8 miles south-west). Not far away are Malling Down and Cliffe Hill.
Landlords, agents and businesses in Upper Wellingham
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
The process
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to several days, depending on the building from start to finish. Somewhere like Upper Wellingham 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.
- We look at every joint and agree a colour to suit the wall.
- 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
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
- For business premises, tell us about site rules or sign-in
How to get a quote
Want a quote for external mastic? Please call 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.
Read more
Do you need external mastic in Upper Wellingham?
Sometimes a movement joint was filled with mortar or a rigid filler. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
These are the problems we’re asked about most:
- Water getting into walls through failed joints
- Rigid filler in a joint that should flex
- Plants rooting in failed movement joints
- Joints where the bead has come unstuck
For an older house near a landmark such as The Parish Church of St Mary, an extension built onto an older house moves differently, and the joint between them takes the strain.
Comparing quotes
- Whether they’re fully insured
- Who turns up on the day
- What the cure time is
- What product goes in the joint
Common questions in Upper Wellingham
Can you do external mastic in Upper Wellingham?
Yes, Upper Wellingham is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
Do you work for landlords with property near Cooksbridge station?
Yes, landlords and agents are among the people we work for. Just ring 0345 464 0079 or drop us an email with the address and what needs doing, and we will give you a clear quote.
Can I add another job to the visit?
Yes, we can. More than one area can be quoted together.
What’s an expansion joint in brickwork?
Most straight vertical gaps in brickwork are movement joints. It lets the bricks expand without cracking, and it should be sealed with a flexible sealant.
Do you seal joints where cladding meets other materials?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. We pick a colour that works with both materials.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Can you reach joints on upper floors?
That depends on the building and the joints. Where joints can be reached safely, we will do them. Give us some details and we will confirm the access.
How long does external mastic last?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
What we can’t put right
It helps to know what we cannot do too:
- Cracks in the bricks or render themselves, away from the joints
- Subsidence or other structural problems
- Failed render or damaged cladding panels
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.
Where we work in Upper Wellingham
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Copings & trims
- Concrete & block
- Render & cladding joints
What affects the quote in Upper Wellingham
The price is agreed before any work begins. It’s based on:
- Whether there’s mould to deal with
- Which sealant suits the joint
- How much old sealant there is and how hard it is to remove
- The size of the job
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Helping us quote
When you call or email, it’s useful to know:
- How we’d reach the joints
- The address or postcode of the job
- How many joints, rooms or windows are involved
- Whether it has been sealed before
To get a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.