Kent · England
External & façade joints in Hawkenbury, Kent
External mastic for Hawkenbury, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Failed sealant between panels on a façade
- Movement joints filled with mortar instead of sealant
- Brick movement joints where the sealant has split
External mastic in Hawkenbury, done properly
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We are often asked to deal with movement joints with cracked, split or missing sealant and sealant that has lost its bond to the brick or render, on render & cladding joints, copings & trims and brickwork movement joints.
Outside joints can only be sealed when they’re dry, so work in Hawkenbury is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Where
- Hawkenbury (TN12)
- Region
- Kent
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
Most of a good job is in the preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to several days, depending on the building. For a village or hamlet like Hawkenbury, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by walking round the building and agreeing the joints and the access.
- 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.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Keep children and pets away from the work area
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or send us an email.
Read more
How to look after the new joints
So the new joints stay in good condition:
- Clear growth from the base of walls and joints
- Act on the first splits you see
- Walk round the building once a year and look at the joints
- Keep water from gutters off the wall
Don’t paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established.
Signs you need external mastic in Hawkenbury
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
If you can see any of these, it’s time to have the joints looked at:
- Failed seals between different materials
- Joints with sealant missing in places
- Plants rooting in failed movement joints
- Weathered mastic that no longer stretches
In and around Hawkenbury, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Questions to ask before you book
- How the surfaces are prepared before sealing
- The length of the guarantee
- Which colour the sealant will be
- Whether all the old sealant comes out first
Should I try it myself first?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
A careful DIYer can reseal a simple joint, 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.
What the job involves on each surface
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.
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Why act early in Hawkenbury
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. In a small place like Hawkenbury, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
Why choose Mr Mastic in Hawkenbury
- Domestic, commercial and hotel work
- We’re fully insured
- A 12-month guarantee on all work
- We agree the colour with you first
Take a look at how sealant jobs are priced and what customers say.
Quotes for external mastic in Hawkenbury
There’s no set price list, because no two jobs are the same. The quote depends on:
- The amount of work
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- How we’d reach the joints
- Whether it has been sealed before
- What’s wrong with the joints now
- Where the property is
We do not publish a price list. Instead, we give you a clear price for your job. To get started, ring 0345 464 0079 or email us.
Towns and villages near Hawkenbury
What else we do in Hawkenbury
Outside joints around Hawkenbury
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.
For landlords with property near Staplehurst station, split movement joints are easy to miss on a rental until damp shows inside.
Hawkenbury is about 7 miles south of Maidstone, in Kent. Our applicators cover external mastic for homes and businesses in Hawkenbury, as part of our work across Kent. Across Kent, we cover 922 places, and Hawkenbury is one of them. For nearby work, see our Crawley page (34 miles or so).
We cover every part of TN12 for external mastic. Close by, we work in Farthing Green (1 mile north-east), Devil's Den (1 mile north), Staplehurst (1 mile south-west), Cross-at-Hand (2 miles north-west) and Sinkhurst Green (2 miles south). We also work in nearby towns such as Maidstone (7 miles north), Ashford (13 miles east), Sittingbourne (13 miles north-east), Royal Tunbridge Wells (14 miles west), Tonbridge (13 miles west) and Kings Hill (10 miles north-west).
Around Hawkenbury
The nearest railway station is Staplehurst station, roughly 1.3 miles west. Other landmarks nearby include Brattle Farm Museum (2.4 miles south-west) and Sutton Valence Castle (2.6 miles north).
FAQs for Hawkenbury
Is Hawkenbury in your area for external mastic?
Yes, Hawkenbury is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or send us an email and let us know what needs doing, and we’ll send you a clear quote.
Do you cover smaller places like Hawkenbury?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
How do I get a quote for external mastic in Hawkenbury?
We do not publish prices, because the cost 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.
Can a movement joint be filled with mortar?
No. Rigid materials cannot move with the wall and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
How long does external mastic last?
There’s no fixed answer: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Every job carries our 12-month guarantee.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.