Kent · England
External Mastic in Hoath
External mastic for Hoath, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Panel joints letting water in
- Failed seals between different materials
- Damp patches traced to an open external joint
Can I do it myself?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
External mastic in Hoath
On houses, flats and commercial buildings across Hoath, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. If you have weeds or debris growing in open joints and sealant that has lost its bond to the brick or render, we can help.
In a village or hamlet like Hoath, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
Every job is covered by a one-year guarantee, wherever you are in Kent.
- Where
- Hoath (CT3)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens if it’s left?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. Where a wall is exposed, as many are in small places like Hoath, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
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 send us an email.
Why Hoath clients choose us
- Anti-fungal silicone where joints get wet
- 20+ years of sealant experience
- 180+ five-star Google reviews
- Homes, businesses and hotels
What the job involves on each surface
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Walk round the building once a year and look at the joints
- Keep soil, plants and ivy away from the joints
- Keep movement joints as flexible joints, not mortar
- Act on the first splits you see
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges.
Small splits are the time to act. At that stage it’s a simple cut out and reseal.
What affects the cost of external mastic
Jobs vary more than people expect. The main factors:
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- How many rooms, windows or areas are involved
- Access and height
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before we start.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- How many joints, rooms or windows are involved
- A few pictures by email, if you can
- The address or postcode of the job
- Any access issues, like height or stairs
We do not publish a price list. Instead, we give you a clear quote for your job. To arrange one, phone 0345 464 0079 or email us.
What happens on the day
We bring everything the job needs with us, so you don’t need to buy or prepare anything. Once we have agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to several days, depending on the building. Somewhere like Hoath needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Let us know about earlier repairs to the joints
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. Whenever you’re ready, call 0345 464 0079 or email us.
Related advice
What sealant work cannot fix
A few problems are outside what sealant work can do:
- Movement that is more than a sealant joint can take
- Cracking across the wall rather than at a joint
- Loose or hollow render, which needs re-rendering
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Surfaces we seal
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Concrete & block
- Joints between brick and frames
Your questions about external mastic in Hoath
Is Hoath within the area you cover?
Yes. Hoath 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.
Does the coastal weather in Hoath affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Can landlords and businesses book you?
Yes, we do. Domestic, commercial and hotel work are all part of what we do.
When is the sealant fully cured?
Many sealants skin over quickly but take longer to cure fully. We’ll tell you how long to leave the joint before we leave.
Why do you put foam in the joint first?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only.
Do the sealants smell?
There can be a smell while the sealant cures, but it fades. Opening a window helps.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Other services in Hoath
External mastic in Hoath: local notes
Hoath is within about 3 miles 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.
Letting a property close to Herne Bay station? Then split movement joints are easy to miss on a rental until damp shows inside. If you live in an older home near Church of the Holy Cross, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you look after a building such as Hoath Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Hoath is about 3 miles south-east of Herne Bay, in Kent. For external mastic in and around Hoath, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover Kent from our Crawley base, Hoath included. Across Kent, we cover 922 places, and Hoath is one of them. Chelmsford is on our list too, about 40 miles from Hoath.
Here we cover the CT3 postcode area for external mastic. We cover properties on Church Road, Marley Lane and Barn Close and the roads around them. We also cover Maypole (1 mile north), Knave's Ash (1 mile west), Old Tree (1 mile north-east), Millbank (1 mile north) and Hollow Street (1 mile east). Within a short drive, we also cover Canterbury (5 miles south-west), Margate (10 miles east), Dover (15 miles south-east), Ramsgate (11 miles east), Broadstairs (12 miles east) and Whitstable (6 miles west).
Landmarks near Hoath
In Hoath, that means homes and buildings near Spires Academy and Curtis Wood, among other places. The nearest railway station is Herne Bay station, about 2.9 miles north-west. Other landmarks nearby include St Martins Hospital (4.6 miles south-west). The countryside around Hoath includes West Blean and Thornden Woods.