Brighton and Hove · England
Patcham External Mastic
We cover Patcham for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Weeds or debris growing in open joints
- Hard, crazed mastic that has stopped moving
- Movement joints with cracked, split or missing sealant
External mastic in Patcham
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing and we use one wherever it does. We’re often asked to deal with panel joints letting water in and rain getting behind render or cladding at a joint, across brickwork movement joints, façade panels and copings & trims.
In a smaller place like Patcham, some homes face open ground, so exposed walls and rooflines take more wind-driven rain. That is where gutter joints and wall joints tend to fail first.
Your job is guaranteed for a year, as with all our work.
- Location
- Patcham (BN1)
- Region
- Brighton and Hove
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
Water gets in through a failed movement joint, behind render and cladding. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. Around Patcham, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
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. Your quote takes all of that into account.
Why choose Mr Mastic in Patcham
- Neat joints and a tidy finish
- Sealant colour chosen to suit
- 4.9 on Google from 180+ five-star reviews
- White, clear, grey or coloured to suit, where the product allows
Read how sealant jobs are priced and customer reviews.
Towns and villages near Patcham
What else we do in Patcham
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We cut it out and start again.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
What we cannot put right
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Movement that’s more than a sealant joint can take
- Cracked brickwork or render that needs a builder or plasterer
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you are not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Render & cladding joints
- Façade panels
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
How the job changes by surface
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joint sealant has to cope with frequent movement. The sealant is chosen with that in mind.
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
Patcham buildings and the weather
Patcham is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. 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.
Schools such as Patcham Infant School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For landlords with property near Preston Park station, outside joints that have cracked can let damp into a rental, so check them between lets. For an older house near a landmark such as All Saints Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
Patcham is about 2 miles north of Brighton, in Brighton and Hove. Across the BN1 area, we can carry out external mastic at your property. Patcham is one of 30 towns and villages in Brighton and Hove we cover for external mastic.
We cover every part of BN1 for external mastic and the streets around it. If you need external mastic at a property on London Road, Vale Avenue and Eldred Avenue or a nearby road, our applicators can take on the job. We also cover Waterhall (1 mile north-west), Westdene (1 mile south-west), Hollingbury (1 mile east), Withdean (1 mile south) and Preston (1 mile south). Further out, we also cover Carlton Hill (3 miles south), Hanover (3 miles south), Brunswick (3 miles south), Kemptown (4 miles south-east), Whitehawk (3 miles south-east) and Aldrington (3 miles south-west).
Local landmarks in Patcham
Around Patcham, our work takes us to homes and buildings near Withdean Park, Patcham High School and The Dharma Primary School, among other places. The nearest railway station is Preston Park station, roughly 1.3 miles south. Well-known places in the area include Clayton Castle (3.1 miles north) and Brighton Transport Museum (1.8 miles south). Not far away are Ditchling Beacon and Ladies Mile.
Questions from Patcham
Is Patcham 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.
Does living near the coast affect external mastic in Patcham?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply ring 0345 464 0079 or email us.
How do I get a quote for external mastic in Patcham?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Can landlords and businesses book you?
Yes, often. Several properties can go on one quote, and between tenancies is a good time for the work.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Can tenants book the work?
Yes, though it’s best to check with your landlord first. Many landlords are glad to have it sorted.
Landlord and commercial work in Patcham
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
What happens on the day
We keep the work tidy and contained to the joints we’re treating, so you can get on with your day. Expect the work to take anything from a few hours to several days, depending on the building, and we tell you how long to leave it before we go. In a smaller place like Patcham, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Let us know about parking restrictions
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
For external mastic in Patcham, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Related advice
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Make sure movement joints aren’t pointed over
- Clear growth from the base of walls and joints
- Deal with leaking gutters that soak the joints below
- Keep high-pressure jets off the joints
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Resealing it early helps prevent that.