Kent · England
Howt Green External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Howt Green. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Gaps where render, brick and frames meet
- Panel joints letting water in
- Joints pointed up with cement by mistake
How it works
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to several days, depending on the building. Somewhere like Howt Green needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
Get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. Whenever you are ready, phone 0345 464 0079 or drop us an email.
Advice
External mastic in Howt Green, done properly
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing all tend to fail early. We take the old material out and do it properly. Typical jobs include panel joints letting water in and weathered mastic that no longer stretches, across joints between brick and frames, render & cladding joints and façade panels.
External sealant needs dry, clean surfaces, so work around Howt Green is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
A one-year guarantee comes as standard.
- Where
- Howt Green (ME9)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quote
- A clear price before work begins
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
What happens if it’s left?
Resealing a run of joints in one go is usually better than patching one at a time. They’ve weathered the same way, and access only has to be arranged once. Around Howt Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Rather than a set price list, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why Howt Green clients choose us
- Quality sealants from Arbo and Everbuild
- 12-month guarantee on every job
- Experience in homes, commercial sites and hotels
- Over 20 years’ experience
Read our cost guide or what customers say.
When to call us in Howt Green
A lot of failed joints come down to preparation: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The sealant never bonds properly.
Most people get in touch when they notice one of these:
- Brick movement joints where the sealant has split
- Movement joints filled with mortar instead of sealant
- Failed sealant between panels on a façade
- Joints where the bead has come unstuck
If you look after a building such as Regis Manor Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- Which colour the sealant will be
- Are they insured?
- How hidden problems are handled
- Whether they seal over old material or remove it
Places near Howt Green
What else we do in Howt Green
Quotes for external mastic in Howt Green
You will get a clear quote before we start. It’s based on:
- How easy the joints are to reach
- Which sealant suits the joint
- Working hours on commercial sites
- Whether old sealant or filler has to be cut out
The cost depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
To make quoting easier, please include:
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- If it’s domestic, commercial or a hotel
- The problem you’ve noticed
Want a quote for external mastic? Please call 0345 464 0079 or drop us an email with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly.
What sealant work cannot fix
Before you book, it’s worth knowing the limits too:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Failed render or damaged cladding panels
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before booking.
Where we work in Howt Green
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Façade panels
- Concrete & block
Common questions in Howt Green
Do you work for landlords with property near Kemsley station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Is Howt Green within the area you cover?
Yes, Howt Green is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Where is Mr Mastic based?
We are based in Crawley, West Sussex, and we work across South East England, London and Scotland.
What do you need from me for a quote?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply phone 0345 464 0079 or email us.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Can I add another job to the visit?
Yes. Just list everything you need and you will get one quote.
Can new sealant go over the old?
No, it will not last. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
How long does the job take?
As a guide, most jobs take a few hours for a handful of joints, longer for a whole elevation. Bigger jobs take longer.
Howt Green buildings and the weather
Howt Green is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. 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.
Homes close to Church of St Bartholomew include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant. Rented homes near Kemsley station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Howt Green is about 1 mile north-west of Sittingbourne, in Kent. Wherever you are in the ME9 postcode area, we can carry out external mastic at your property. 922 places in Kent are on our list, from the larger towns to small villages. We also work in Chelmsford, around 28 miles away.
Postcode districts we cover here for external mastic: ME9. We also cover the places around Howt Green: Kemsley (1 mile east), Iwade (1 mile north), Sittingbourne (1 mile south-east), Milton Regis (1 mile south-east) and Murston (2 miles south-east). Within a short drive, we also cover Maidstone (11 miles south-west), Whitstable (13 miles east), Faversham (8 miles south-east), Minster (5 miles north-east), Kings Hill (15 miles south-west) and Davington (8 miles south-east).
Local landmarks in Howt Green
Locally, jobs take us to homes and businesses close to Milton Creek Country Park, The Three Hats Inn and Westlands School and the streets around them. Howt Green’s nearest station is Kemsley station, roughly 0.6 miles east. A little further out are Castle Rough (1.4 miles east) and Court Hall Museum (0.9 miles south-east).