Kent · England
Sheerness External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Sheerness, backed by a 12-month guarantee. Ask us for a quote.
- Movement joints with cracked, split or missing sealant
- Panel joints letting water in
- Movement joints filled with mortar instead of sealant
Why act early in Sheerness
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way. In an older home around Sheerness, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
What you get with us
- ARBOMaster approved applicator
- Domestic, commercial and hotel work
- A sealant colour to suit the surroundings
- Any old sealant cut out fully, not covered over
Read how sealant jobs are priced or our reviews.
How we handle external mastic in Sheerness
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 strip the joint back and start again. If you have brick movement joints where the sealant has split and sealant that has lost its bond to the brick or render, we can help, whatever the surface.
Homes around Sheerness range from older cottages to newer houses, with walls and rooflines of every type. Older homes need their gutter and trim joints kept tight, newer ones their movement joints.
We stand behind the work with a one-year guarantee, so you’re not left on your own once the job is done.
- Place
- Sheerness (ME12)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What we cannot put right
New sealant can’t fix everything, and we’ll tell you before we start. It will not solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Loose or hollow render, which needs re-rendering
- Adding movement joints to masonry that has none
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.
What we seal
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Façade panels
- Joints between brick and frames
- Copings & trims
Signs you need external mastic in Sheerness
Sunlight, wet weather and frost wear exterior sealant down. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
These are the problems we’re asked about most:
- Joints pointed up with cement by mistake
- Leaking joints around cladding and façade panels
- Rain getting behind render or cladding at a joint
- Cracked joints where brick meets render or frames
For landlords with property near Sheerness-On-Sea station, outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- How long the guarantee is
- What happens if they find a problem under the old sealant
- How the colour is chosen
- Who does the work, and how experienced they are
Quotes for external mastic in Sheerness
Every job gets its own quote. These are the things that affect it:
- Which sealant suits the joint
- How many areas need sealing
- The old material and how stubborn it is
- Access and height
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What we need to know
To make quoting easier, let us know:
- Whether it has been sealed before
- Photos by email, if that’s easy
- If it’s domestic, commercial or a hotel
- The rough size of the job
For a quote, phone 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
For landlords and businesses
For anyone letting property in or around Sheerness, several properties can be quoted together. Just tell us the addresses and what each one needs.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
What the job involves on each surface
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap so the sealant is not too deep.
Outside joints around Sheerness
Sheerness is within about 1 mile 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. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Rose Street Primary School? Then its movement joints, gutters and trims need looking after like any other building’s. In the older streets around Parish Church of the Holy Trinity, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Sheerness is about 7 miles north of Sittingbourne, in Kent. Our applicators cover external mastic for householders, landlords and businesses in Sheerness and nearby, as part of our work across Kent. Our Kent coverage runs to 922 places, and Sheerness is one of them. You can also see our page for Chelmsford, about 24 miles away.
Work in ME12 is quoted and booked the same way as anywhere else. Whether your property is on High Street, Granville Road and Millennium Way or a nearby road, we can help. Being close to the A249 and A250, Sheerness is simple for us to get to for external mastic. Other places close to Sheerness include Blue Town (1 mile north-west), Halfway Houses (1 mile south-east), Queenborough (2 miles south), Rushenden (2 miles south-west) and Grain (2 miles north-west). We also work in nearby towns such as Sittingbourne (7 miles south), Whitstable (13 miles south-east), Faversham (10 miles south-east), Davington (10 miles south-east), Foley Park (15 miles south-west) and Preston (10 miles south-east).
Landmarks near Sheerness
In Sheerness, that means homes and buildings near Oasis Academy Isle of Sheppey, Barton's Point Coastal Park and The Crown pub, among other places. Sheerness has its own railway station: Sheerness-On-Sea station. Other landmarks nearby include Rose Street Cottage of Curiosities (within half a mile north).
Also near Sheerness
Also in Sheerness
What we do, step by step
When we arrive, we start by going over the job with you, so there are no surprises. Surfaces next to the work are protected before any work begins. The work normally takes a few hours for a handful of joints, longer for a whole elevation. A visit to Sheerness is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
Before we arrive
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
Getting a quote
Every job is quoted individually. Simply call 0345 464 0079 or send us an email and describe the job.
Read more
Questions from Sheerness
Will you come out to Sheerness?
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 Sheerness-On-Sea station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we’ll send you a clear quote.
How do I get a quote for external mastic in Sheerness?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before any work starts.
When will the joints need doing again?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Our work comes with a 12-month guarantee.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Can you do several jobs on one visit?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
What do you put in the joint?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.