Kent · England
External & façade joints in Greenhill, Kent
Problem with your movement joints in Greenhill? We remove the old material, prepare the joints and seal them properly.
- Weeds or debris growing in open joints
- Sealant that has lost its bond to the brick or render
- Old sealant gone brittle and cracked
Landlords, agents and businesses in Greenhill
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.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
External mastic in Greenhill, done properly
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. Typical jobs include rigid filler in a joint that should flex and joints with sealant missing in places, across render & cladding joints, concrete & block and brickwork movement joints.
In a smaller place like Greenhill, some homes face open ground, and walls and rooflines facing the weather take the worst of it. That’s where gutter joints and wall joints tend to fail first.
You’re covered for a year from the day we finish. If there’s a problem with it, please call 0345 464 0079 or send us an email.
- Where
- Greenhill (CT6)
- Wider area
- Kent
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What happens on the day
When we arrive, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. The work normally takes anything from a few hours to several days, depending on the building. In a smaller place like Greenhill, 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.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Mention if the joints have been sealed before
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Simply phone 0345 464 0079 or email us and describe the job and send pictures if you have them.
Read more
Greenhill buildings and the weather
Greenhill 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’s hard on movement joints and outside wall joints, especially on the side facing the sea. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Letting a property close to Herne Bay 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 St Peter, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Greenhill is about 1 mile south-west of Herne Bay, in Kent. Greenhill gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 922 places across Kent. For nearby work, see our Chelmsford page, about 37 miles away.
We cover every part of the CT6 postcode area for external mastic and the streets around it. Streets in the area include Love Street Close, Herne Drive and Matthews Road, all of which we cover. Nearby, we also carry out external mastic in Eddington (1 mile east), Bullockstone (1 mile south-east), Herne Common (1 mile south-east), Herne Bay (1 mile north-east) and Herne (1 mile south-east). Within a short drive, we also cover Canterbury (6 miles south), Margate (12 miles east), Ramsgate (13 miles east), Broadstairs (14 miles east), Whitstable (3 miles west) and Faversham (10 miles west).
Around Greenhill
Locally, jobs take us to homes and businesses close to The Share And Coulter Public House, Curtis Wood and Herne Bay High School, among other places. The nearest railway station is Herne Bay station, roughly 0.6 miles north-east of the centre. Nearby you will also find Whitstable and Tankerton Hospital (2.4 miles west) and Tankerton Castle (3.1 miles west). For a walk, there’s West Blean and Thornden Woods.
How the job changes by surface
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so the movement is taken up.
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind.
Common questions in Greenhill
Will you come out to Greenhill?
Yes. Greenhill is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Herne Bay station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
How long does the job take?
It depends on the size of the job, but most jobs take a few hours to a few days, depending on the length of joint and the access. We will tell you when we quote.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Is there any odour?
There can be a smell while the sealant cures. Opening a window helps.
How often do external joints need resealing?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year and renew it when it starts to fail.
When is the sealant fully cured?
Cure times vary by product and the conditions. Before we leave, we will tell you the cure time.
Why is there a gap in my brick wall?
Walls move with heat, cold and moisture, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
When to call us in Greenhill
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Look out for any of the following:
- Rain getting behind render or cladding at a joint
- Gaps where render, brick and frames meet
- Leaking joints around cladding and façade panels
- Joints with sealant missing in places
Managing a site like Thornden Wood Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- What the cure time is
- How much experience the applicator has
- Whether they’re fully insured
- Whether you can choose the colour
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Towns and villages near Greenhill
Other services in Greenhill
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Movement that is more than a sealant joint can take
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
Joints and surfaces we work on
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Concrete & block
Quotes for external mastic in Greenhill
Your quote is based on your job. We take into account:
- The type of sealant required
- Any mould that needs treating
- The number and length of the joints
- Whether old sealant or filler has to be cut out
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
What we need to know
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Whether it’s a home or a business
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- How we’d reach the joints
Want a quote for external mastic? Please phone 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.