Kent · England
External Mastic in Hazel Street
Professional external mastic in and around Hazel Street, with every bit of old sealant taken out first and a 12-month guarantee.
- Moss and dirt in joints with no sealant left
- Movement joints filled with mortar instead of sealant
- Old sealant gone brittle and cracked
External mastic in Hazel Street
As ARBOMaster approved applicators, we choose exterior sealants to suit the joint and the surfaces. Some surfaces need a primer before sealing. If you are dealing with joints where the bead has come unstuck and old sealant gone brittle and cracked, we can put it right.
Somewhere as small as Hazel Street, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
A one-year guarantee comes as standard, so you’re covered after we’ve gone.
- Where
- Hazel Street (TN12)
- Wider area
- Kent
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Signs you need external mastic in Hazel Street
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, so it pulls away from the edges.
The most common problems we see are:
- Movement joints filled with mortar instead of sealant
- Weeds or debris growing in open joints
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
For site and facilities teams at buildings such as Horsmonden Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What your quote should include
- How hidden problems are handled
- How long to leave it before use
- How long the guarantee is
- Whether all the old sealant comes out first
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Check external joints each spring
- Do not let climbing plants root in the sealant
- Get split or bare joints resealed while the damage is small
- Deal with leaking gutters that soak the joints below
Do not let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Act while the splits are small. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
Hazel Street questions
Will you come out to Hazel Street?
Yes, Hazel Street is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I let a flat near Paddock Wood station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. Indoors, that normally means someone at home.
How long should I leave it?
That depends on the sealant used, so please follow the time we give you when we finish.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Is the work guaranteed?
Yes. Every job comes with a 12-month guarantee.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Do you work at height?
It depends on the building. Send us pictures and a rough idea of the height and we will confirm how they can be reached safely.
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
If you are set on DIY, put the effort into 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.
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
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.
Places near Hazel Street
Also in Hazel Street
When something else is needed
Before you book, it’s worth knowing the limits:
- Cracking across the wall rather than at a joint
- Structural movement, which needs a surveyor or engineer
- Failed render or damaged cladding panels
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Where we work in Hazel Street
- Render & cladding joints
- Concrete & block
- Façade panels
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
How the job changes by surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
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.
The process
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Hazel Street, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Try not to wet indoor joints just before the visit
- Plan for the work area to be out of bounds to pets and children
- Move anything stored near the joints
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add pictures by email if you can.
Advice
What external mastic looks like in Hazel Street
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Scotney Castle (about 2.7 miles south) nearby, there’s older building stock in the area around Hazel Street as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you live in an older home near Church of St Margaret, older walls, gutters and the joints where extensions meet them need a flexible sealant. Letting a property close to Paddock Wood station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Hazel Street is about 7 miles east of Royal Tunbridge Wells, in Kent. Every kind of property in Hazel Street is covered for external mastic, old or new, large or small. The work is guaranteed for a year. Our Kent coverage runs to 922 places, Hazel Street among them. For nearby work, see our Crawley page (27 miles or so).
We work across TN12 for external mastic and the streets around it. You’ll find streets such as Lamberhurst Road and Spelmonden Road, and we cover them all. Other places close to Hazel Street include Horsmonden (1 mile north-east), Smallbridge (1 mile south-east), Capel Cross (1 mile east), Broad Ford (1 mile east) and Palmer's Green (2 miles north). Within a short drive, we also cover Maidstone (10 miles north-east), Sevenoaks (15 miles north-west), Royal Tunbridge Wells (7 miles west), Tonbridge (8 miles north-west), Kings Hill (10 miles north) and Foley Park (11 miles north-east).
Landmarks near Hazel Street
We work in homes and buildings around The Gun And Spitroast Public House And Rear Courtyard. Hazel Street’s nearest station is Paddock Wood station, roughly 3.9 miles north. Nearby you’ll also find Old Scotney Castle (2.7 miles south) and Tunbridge Wells Hospital (5.1 miles west). The countryside around Hazel Street includes Bewl Water.