Kent · England
External & façade joints in Hareplain, Kent
External mastic in Hareplain from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Weeds or debris growing in open joints
- Panel joints letting water in
- Sealant pulling away from one side of the joint
About our external mastic in Hareplain
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two. Typical jobs include cracked joints where brick meets render or frames and rigid filler in a joint that should flex, on façade panels, brickwork movement joints and concrete & block.
Somewhere as small as Hareplain, 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.
You get a one-year guarantee, the same in Hareplain as everywhere else we work.
- Location
- Hareplain (TN27)
- Region
- Kent
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Your questions about external mastic in Hareplain
Do you cover Hareplain for external mastic?
Yes. Our work covers London and the South East, and Hareplain is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
Can you help a landlord with a rental near Headcorn station?
Yes, we work for letting agents and landlords. You can call 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
How long will you be here?
That depends on how much there is to do, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We’ll tell you when we quote.
Will the new joint stand out?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We choose the closest to your brick or render.
Can a movement joint be filled with mortar?
No. Rigid materials can’t move with the wall, so the joint stops doing its job. Where a joint has been mortared, it can often be raked out and sealed properly.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Why do you put foam in the joint first?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back.
Is there any odour?
Some sealants have a smell while they cure. Ventilation helps.
How the job changes by surface
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap.
Cladding and façade panels
If the façade has a specified sealant, that is what we use, or one the system allows. Tell us what the building has when you get in touch.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracks in the bricks or render themselves, away from the joints
- Render that is blown, hollow or coming away
If you’re not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Surfaces we seal
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Façade panels
- Brickwork movement joints
Do you need external mastic in Hareplain?
Buildings move more than people expect. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
Signs it’s time to call us include:
- Old sealant gone brittle and cracked
- Brick movement joints where the sealant has split
- Rigid filler in a joint that should flex
- Leaking joints around cladding and façade panels
Around Hareplain, as everywhere, external mastic is only as good as the preparation behind it.
What your quote should include
- What guarantee comes with the work
- Whether you can choose the colour
- What the cure time is
- What happens if they find a problem under the old sealant
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Fix overflowing gutters above sealed joints
- Keep movement joints as flexible joints, not mortar
- Show decorators and builders where the movement joints are
- Look over the joints every year, ideally after winter
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
A joint that has stopped moving pushes the movement elsewhere, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
Towns and villages near Hareplain
What else we do in Hareplain
Landlord and commercial work in Hareplain
We also work for property managers and facilities teams in Hareplain and across Kent. Several sites can go on one quote.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
Walls and rooflines in Hareplain
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.
If you let a flat or house near Headcorn station, outside joints that have cracked can let damp into a rental, so check them between lets.
Hareplain is about 10 miles south of Maidstone, in Kent. Every kind of property in Hareplain is covered for external mastic. The work is guaranteed for a year. Across Kent, we cover 922 places, Hareplain among them. Crawley is on our list too, around 35 miles away.
Here we cover the TN27 postcode area for external mastic. We also cover Three Chimneys (1 mile south-west), Biddenden (1 mile south-east), Curteis' Corner (1 mile east), Lashenden (2 miles north-east) and Standen (2 miles east). Larger places within reach include Maidstone (10 miles north), Ashford (11 miles east), Royal Tunbridge Wells (15 miles west), Tonbridge (15 miles west), Kings Hill (14 miles north-west) and Foley Park (11 miles north).
Landmarks near Hareplain
In Hareplain, that means homes and buildings near Three Chimneys Public House, among other places. The closest station to Hareplain is Headcorn station, roughly 2.8 miles north. A little further out are Kent Firefighting Museum (0.8 miles north) and Sissinghurst Castle (1.7 miles south-west).
What affects the quote in Hareplain
The price is agreed before any work begins. It’s based on:
- Whether there’s mould to deal with
- How many areas need sealing
- The amount of work
- Which sealant suits the joint
The cost depends on how much there is to do, how much old material has to come out and access to the work. You will have a clear quote before any work starts.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- Any access issues, like height or stairs
- Whether it’s a home or a business
- Where the job is, and your postcode
- Pictures of the joints, sent by email
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. You’ll have a clear quote before work begins.
What we do, step by step
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours to a few days, depending on the length of joint and the access, depending on how much there is to do. Somewhere as small as Hareplain, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Tell us about access, such as stairs, a lift or high-level joints
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
For external mastic in Hareplain, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you will get a clear quote before we start.