Kent · England
Upchurch External Mastic
Problem with your movement joints in Upchurch? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Damp patches traced to an open external joint
- Cracked joints where brick meets render or frames
- Brick movement joints where the sealant has split
How we handle external mastic in Upchurch
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. Typical jobs include sealant that has lost its bond to the brick or render and movement joints with cracked, split or missing sealant, across brickwork movement joints, copings & trims and façade panels.
Somewhere as small as Upchurch, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Where
- Upchurch (ME9, ME8)
- Wider area
- Kent
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Common questions in Upchurch
Will you come out to Upchurch?
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.
Do you work for landlords with property near Rainham (Kent) station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
How long does external mastic last?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and reseal when it splits.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Should I try DIY first?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
How long does external mastic take?
That depends on how much there is to do, but most jobs take anything from a few hours to several days, depending on the building. We’ll tell you when we quote.
Will the new joint stand out?
We choose a sealant colour to suit the brick, stone or render, so the joint sits quietly in the wall. Exterior sealants come in a good range of colours.
Can a movement joint be filled with mortar?
No. Cement or mortar cannot stretch. If it has already been filled, we can generally cut it out and reseal it.
How we quote for external mastic
The quote reflects the job in front of us. We look at:
- Whether there’s mould to deal with
- The amount of work
- Whether the work is at height
- Whether old sealant or filler has to be cut out
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What we need to know
When you contact us, it’s useful to know:
- What the problem is, such as mould, gaps, leaks or cracking
- Access, such as stairs, a lift or height
- Roughly how big the job is
- The address or postcode of the job
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Landlords, agents and businesses in Upchurch
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We also work for property managers and facilities teams. We can quote a run of properties together.
What external mastic looks like in Upchurch
Upchurch is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For site and facilities teams at buildings such as Holywell Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Letting a property close to Rainham (Kent) station? Then outside joints that have cracked can let damp into a rental, so check them between lets. If you live in an older home near Church of St Mary the Virgin, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Upchurch is about 3 miles east of Gillingham, in Kent. From the centre of Upchurch to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Across Kent, we cover 922 places, Upchurch among them. You can also see our page for Chelmsford, roughly 26 miles from Upchurch.
All of ME9 and ME8 is within our area for external mastic, from the main roads to the quietest streets. Streets in the area include The Street, Crosier Court and Horsham Lane, and we cover them all. We also cover the places around Upchurch: Lower Halstow (1 mile east), Breach (1 mile south), Moor Street (1 mile south-west), Lower Rainham (1 mile west) and Newington (2 miles south-east). Larger places within reach include Maidstone (9 miles south-west), Sittingbourne (4 miles south-east), Gravesend (12 miles west), Faversham (11 miles east), Northfleet (14 miles west) and Minster (7 miles north-east).
Around Upchurch
In Upchurch, that means homes and buildings near Leigh Academy Rainham and Berengrave Chalk Pit and the streets around them. The nearest railway station is Rainham (Kent) station, roughly 1.6 miles south-west. A little further out are Medway Maritime Hospital (4.5 miles west) and Bayford Court (4.8 miles south-east). Open spaces near Upchurch include Bishop Saltings.
Towns and villages near Upchurch
More services for Upchurch
What we do, step by step
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Upchurch, the journey is planned in advance: 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.
- 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.
- We clean both faces of the joint and prime them where the product calls for 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
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
Ask for a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job.
Related advice
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Leave it or put it right?
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together. Older cottages and farmhouses around Upchurch can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will explain what it covers.
Why us?
- Experience in homes, commercial sites and hotels
- White, clear, grey or coloured to suit, where the product allows
- Rated 4.9 stars on Google
- Colour agreed with you before we start
Take a look at how sealant jobs are priced or customer reviews.
Aftercare tips
A little care helps the new joints last. We recommend:
- Keep soil, plants and ivy away from the joints
- Look over the joints every year, ideally after winter
- Act on the first splits you see
- Wash walls gently around the sealant
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
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 which cost more to put right than the joint.
What sealant work cannot fix
A few problems are outside what sealant work can do:
- Render that’s blown, hollow or coming away
- Rising or penetrating damp from elsewhere in the wall
- Subsidence or other structural problems
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Where we work in Upchurch
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
- Copings & trims