Kent · England
External Mastic in Hawkhurst
Sealing brickwork movement joints, render, cladding and façade joints in Hawkhurst, with a one-year guarantee on every job. Ask us for a quote.
- Joints with sealant missing in places
- Leaking joints around cladding and façade panels
- Water getting into walls through failed joints
External mastic in Hawkhurst
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. If you are dealing with failed seals between different materials and old sealant gone brittle and cracked, we can put it right, whatever the surface.
In a smaller place like Hawkhurst, some homes face open ground, so exposed walls and rooflines take more wind-driven rain. That’s where gutter joints and wall joints tend to fail first.
Every job comes with a 12-month guarantee.
- Place
- Hawkhurst (TN18)
- Region
- Kent
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
FAQs for Hawkhurst
Is Hawkhurst in your area for external mastic?
Yes, Hawkhurst is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and let us know what needs doing.
Can you help a landlord with a rental near Etchingham station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.
How often do external joints need resealing?
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.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
Where are you based?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Landlord and commercial work in Hawkhurst
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. Several properties can be quoted together.
How it works
The work is kept neat and contained to the joints we are treating, so you can get on with your day. Expect the work to take a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. For a job in Hawkhurst, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Move anything stored near the joints
- Tell us if parking is tricky
- Mention any leaks or damp you’ve noticed
Getting a quote
If you’re in Hawkhurst and need external mastic, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Related advice
What we cannot put right
We’d rather tell you now than do work that won’t last, so these are the limits:
- Adding movement joints to masonry that has none
- Movement that’s more than a sealant joint can take
- Cracked brickwork or render that needs a builder or plasterer
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Concrete & block
Common problems we fix in Hawkhurst
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
Any of these means the joints need attention:
- Water getting into walls through failed joints
- Gaps where render, brick and frames meet
- Sealant pulling away from one side of the joint
- Movement joints filled with mortar instead of sealant
Rented homes near Etchingham station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Before you book anyone
- What preparation is included
- Which sealant they’ll use, and why
- What guarantee comes with the work
- What happens if they find a problem under the old sealant
What happens if it’s left?
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way and it means sorting access once. In an older home around Hawkhurst, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Why Hawkhurst clients choose us
- We are fully insured
- White, clear, grey or coloured to suit, where the product allows
- We leave the area clean and tidy
- Approved under the ARBOMaster scheme
See what affects the cost and our reviews.
Surface by surface
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. We prime where the sealant needs it.
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Walls and rooflines in Hawkhurst
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. Historic houses like Great Dixter (about 5 miles south-east) are a reminder that the area around Hawkhurst has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Homes close to Church of All Saints include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep. For site and facilities teams at buildings such as Hawkhurst Church of England Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Hawkhurst is about 12 miles south-east of Royal Tunbridge Wells, in Kent. Homes, rented property, offices and hotels in Hawkhurst is covered for external mastic. Every job comes with our one-year guarantee. Across Kent, we cover 922 places, and Hawkhurst is one of them. There’s also a page for Crawley, roughly 31 miles from Hawkhurst.
All of TN18 is covered for external mastic, from the main roads to the quietest streets. You’ll find streets such as High Street, Barretts Road and Norris Close. We also cover Beal's Green (1 mile north), Pipsden (1 mile east), The Moor (1 mile south-west), Gill's Green (1 mile north) and Little Conghurst (1 mile south-east). We also work in nearby towns such as Maidstone (15 miles north), Royal Tunbridge Wells (12 miles north-west), Tonbridge (14 miles north-west), Paddock Wood (10 miles north-west), Tenterden (8 miles east) and Southborough (13 miles north-west).
What’s near Hawkhurst
We work in homes and buildings around Collingwood Nature Reserve, The Queen's Hotel and Marlborough House School and the streets around them. For rail, the closest station is Etchingham station, about 4 miles south-west of the centre. Nearby you’ll also find Ticehurst House Hospital (4.9 miles west).
Keeping the joints in good condition
Aftercare is simple:
- Keep movement joints as flexible joints, not mortar
- Walk round the building once a year and look at the joints
- Don’t let climbing plants root in the sealant
- Point out the joints to other trades
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Act while the splits are small. Then it’s a straightforward cut-out and reseal.