Kent · England
External & façade joints in Old Tree, Kent
Specialist external mastic for Old Tree: careful preparation, the right product and tidy work. Call for a quick quote.
- Sealant that has lost its bond to the brick or render
- Leaking joints around cladding and façade panels
- Cracked joints where brick meets render or frames
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
External mastic in Old Tree
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We work on joints between brick and frames, render & cladding joints and façade panels, and the jobs we see most are moss and dirt in joints with no sealant left and damp patches traced to an open external joint.
External sealant needs dry, clean surfaces, so work around Old Tree is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
There’s a 12-month guarantee on every job, large or small.
- Where
- Old Tree (CT3)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Nearby places to Old Tree
More services for Old Tree
Old Tree buildings and the weather
Old Tree is within about 3 miles of 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. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Herne Bay station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. Homes close to Church of the Holy Cross include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Old Tree is about 3 miles south-east of Herne Bay, in Kent. From the centre of Old Tree to the outskirts, we cover external mastic for every kind of property. Across Kent, we cover 922 places, Old Tree among them. There’s also a page for Chelmsford, about 40 miles away.
We cover every part of the CT3 postcode area for external mastic. Close by, we work in Maypole (1 mile west), Hoath (1 mile south-west), Millbank (1 mile north-west), Knave's Ash (1 mile south-west) and Hollow Street (1 mile south-east). Larger places within reach include Canterbury (6 miles south-west), Margate (10 miles east), Dover (15 miles south), Ramsgate (10 miles east), Broadstairs (11 miles east) and Whitstable (6 miles west).
What’s near Old Tree
Typical jobs here are in homes near Curtis Wood and Spires Academy. The closest station to Old Tree is Herne Bay station, about 2.9 miles north-west of the centre. A little further out are St Martins Hospital (5.1 miles south-west). Green spaces nearby include West Blean and Thornden Woods.
Looking after it afterwards
Good habits help new joints last longer. A few tips:
- Tell anyone working on the walls about the movement joints
- Have failed joints looked at early
- Fix overflowing gutters above sealed joints
- Never let anyone fill a movement joint with mortar
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
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.
What the job involves on each surface
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. We prime where the sealant needs it.
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The work itself takes anything from a few hours to several days, depending on the building. For a village or hamlet like Old Tree, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided 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.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Mention any leaks or damp you’ve noticed
- Plan for the work area to be out of bounds to pets and children
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Related advice
When to call us in Old Tree
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
The problems people usually mention when they call include:
- Panel joints letting water in
- Rigid filler in a joint that should flex
- Sealant that has lost its bond to the brick or render
- Joints with sealant missing in places
Schools such as Hoath Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Questions to ask before booking
- What guarantee comes with the work
- How long to leave it before use
- Whether all the old sealant comes out first
- How much experience the applicator has
Old Tree: your questions answered
Will you come out to Old Tree?
Yes, Old Tree is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
I let a flat near Herne Bay station. Can you help?
Yes, we work for landlords and letting agents. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we’re done.
How do I get a quote for external mastic in Old Tree?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or email us and let us know what needs doing and where.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Is it OK to fill a movement joint with cement?
No, not where the gap is a movement joint. Pointing it stops it working. A flexible sealant is the right fill.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
If you manage several properties in or around Old Tree, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Why act early in Old Tree
A failed movement joint lets water into the wall and can run behind render or cladding. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. Where a wall is exposed, as many are in small places like Old Tree, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will give you a clear quote for the lot.
Why us?
- Rated 4.9 stars on Google
- Old sealant always removed completely
- Colour agreed with you before any work starts
- 20+ years of sealant experience
Read our cost guide and customer reviews.