Kent · England
External & façade joints in Preston, Kent
External mastic for Preston, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints around cladding and façade panels
- Rain getting behind render or cladding at a joint
- Moss and dirt in joints with no sealant left
External mastic in Preston
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product. We work on brickwork movement joints, render & cladding joints and façade panels, and the jobs we see most are leaking joints around cladding and façade panels and joints pointed up with cement by mistake.
Older homes in small places like Preston may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Preston (CT3)
- Wider area
- Kent
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How the job changes by surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it so the sealant is not too deep.
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible in all weathers.
What happens on the day
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. Somewhere like Preston needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- Clear items away from the joints we are working on
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
To get a quote, ring 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.
Advice
Landlords, agents and businesses in Preston
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
What affects the cost of external mastic
Every job gets its own quote. These are the things that affect it:
- The old material and how stubborn it is
- The type of sealant required
- How many rooms, windows or areas are involved
- Working hours on commercial sites
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email and we’ll talk you through it.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- Access, such as stairs, a lift or height
- The address or postcode of the job
- Roughly how big the job is
- If someone has resealed it before
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.
Common questions in Preston
Can you help a landlord with a rental near Adisham station?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Is Preston within the area you cover?
Yes, Preston is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is it OK to fill a movement joint with cement?
No. Mortar locks the joint solid, so the wall cracks somewhere else instead. Use a flexible sealant with backing rod.
Are you fully insured?
Yes. Full insurance covers our work.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It stops the sealant going in too deep and bonding to three sides so it can flex with the joint.
Do you seal joints where cladding meets other materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces with primer where required.
What is a movement joint?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
What does external mastic cost?
Size, access and the old material all affect the cost. Call for a quick quote.
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 it means sorting access once. Around Preston, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- Rated 4.9 stars on Google
- 20+ years of sealant experience
- White, clear, grey or coloured to suit, where the product allows
- We never seal over old sealant
Outside joints around Preston
Rainfall in the South East is lower than in much 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 Goodnestone Park (about 4 miles south) nearby, there’s older building stock in the area around Preston 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.
For site and facilities teams at buildings such as Preston Primary School, larger buildings have long runs of movement joint that eventually need resealing. If you live in an older home near Church of St Mildred, the joints between older walls, newer extensions and the roofline need a sealant that can move. Rented homes near Adisham station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Preston is about 6 miles south-east of Herne Bay, in Kent. Jobs in Preston get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 922 towns and villages across Kent, large and small. For nearby work, see our Chelmsford page.
Every address in CT3 is covered for external mastic, from the main roads to the quietest streets. You will find streets such as The Street, The Forstal and Park Lane, all of which we cover. If you’re just outside Preston, we cover Grove (1 mile north-west), West Stourmouth (1 mile north), East Stourmouth (1 mile north-east), Upstreet (2 miles north-west) and Ware (2 miles east). Within a short drive, we also cover Canterbury (6 miles west), Margate (9 miles north-east), Dover (12 miles south), Folkestone (15 miles south), Ramsgate (8 miles east) and Broadstairs (10 miles north-east).
Landmarks near Preston
Locally, jobs take us to homes and businesses close to Grove Ferry Picnic Area and the streets around them. The nearest railway station is Adisham station, about 4.3 miles south. A little further out are St Martins Hospital (5.3 miles west). The countryside around Preston includes Monk's Wall nature reserve.
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Have failed joints looked at early
- Avoid pressure-washing directly into sealant joints
- Leave the joints unpainted unless we have said otherwise
- Keep movement joints as flexible joints, not mortar
Have a quick look at the joints each spring. Splits, gaps at the edges or plants in the joint are early warning signs.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.
When something else is needed
We will always be straight with you, so here’s what sealant cannot fix:
- Render that is blown, hollow or coming away
- Rising or penetrating damp from elsewhere in the wall
- Cracks in the bricks or render themselves, away from the joints
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before booking.
Where we work in Preston
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Copings & trims
- Concrete & block