Kent · England
External & façade joints in Broadstone, Kent
External mastic for Broadstone, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
- Joints where the bead has come unstuck
How it works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours to a few days, depending on the length of joint and the access and we leave things clean and tidy. For a village or hamlet like Broadstone, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about parking restrictions
- For business premises, tell us about site rules or sign-in
Ask for 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 email pictures if that is easy.
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How we handle external mastic in Broadstone
Low-level joints can normally be done from the ground. For joints higher up, give us some details of the building and we will confirm what’s needed to reach them safely. We work on façade panels, joints between brick and frames and copings & trims, and people most often call us about joints where the bead has come unstuck and panel joints letting water in.
External sealant needs dry, clean surfaces, so work around Broadstone is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
All our work comes with a 12-month guarantee.
- Place
- Broadstone (ME17)
- Wider area
- Kent
- Guarantee
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Also near Broadstone
What else we do in Broadstone
DIY versus a professional finish
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
What the job involves on each surface
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. If that’s happened, we rake it out and reseal it properly.
Cladding and façade panels
Cladding and façade panels are normally separated by sealed joints. Each joint gets a sealant that suits the panel and its movement.
Landlord and commercial work in Broadstone
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
For anyone letting property in or around Broadstone, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.
External mastic in Broadstone: local notes
The South East is one of 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 Leeds Castle (about 3.7 miles north-west) are a reminder that the area around Broadstone 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.
If you let a flat or house near Lenham station, split movement joints are easy to miss on a rental until damp shows inside.
Broadstone is about 8 miles south-east of Maidstone, in Kent. Every kind of property in Broadstone is covered for external mastic. Every job comes with our one-year guarantee. Broadstone is one of 922 towns and villages in Kent where we work for external mastic. Our Crawley page covers work nearby, about 38 miles away.
We cover every part of the ME17 postcode area for external mastic. Whether your property is on Boughton Park, Headcorn Road and Eastwood Road or anywhere close by, we can help. Close by, we work in Eastwood (1 mile north-west), Grafty Green (1 mile north-east), Liverton Street (1 mile north-east), Boughton Malherbe (1 mile north-east) and Ulcombe (1 mile north-west). Further out, we also cover Maidstone (8 miles north-west), Ashford (10 miles south-east), Sittingbourne (10 miles north), Faversham (12 miles north-east), Kings Hill (12 miles north-west) and Davington (12 miles north-east).
What’s near Broadstone
Typical jobs here are in homes near The Kings Head Public House and the streets around them. The nearest railway station is Lenham station, roughly 2.9 miles north-east of the centre. Nearby you will also find Coldbridge Castle (1.2 miles east) and The Dog Collar Museum (3.6 miles north-west).
Quotes for external mastic in Broadstone
For a quick quote, just ask. The main things that affect it are:
- How many rooms, windows or areas are involved
- Working hours on commercial sites
- The type of sealant required
- Access and height
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
What we need to know
When you call or email, these details help:
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
- What’s wrong with the joints now
- Whether it’s a home or a business
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, phone 0345 464 0079 or send us an email.
Broadstone: your questions answered
I let a flat near Lenham station. Can you help?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Is Broadstone in your area for external mastic?
Yes, Broadstone is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we’ll give you a clear quote.
How much does external mastic cost in Broadstone?
We don’t 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’ll get a clear quote before any work starts.
Is the work guaranteed?
Yes: twelve months. If anything is not right with the work within the year, let us know and we will sort it.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Broadstone.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
What happens if it’s left?
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. Where a wall is exposed, as many are in small places like Broadstone, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
What it costs depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before we start.
Why Broadstone clients choose us
- White, clear, grey or another colour, product permitting
- We never seal over old sealant
- We agree the colour with you first
- An ARBOMaster approved applicator
Read our cost guide or what customers say.
What we’re called out for in Broadstone
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. With the joint locked solid, the movement turns into cracks elsewhere in the wall.
The problems people generally mention when they call are:
- Rigid filler in a joint that should flex
- Plants rooting in failed movement joints
- Joints with sealant missing in places
- Damp patches traced to an open external joint
Leeds Castle, about 3.7 miles north-west, is one of the historic houses in the wider area around Broadstone, and older homes nearby need a sealant that suits their walls.
What to look for in a quote
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why
- How the joint is cleaned and prepared
- What the quote includes, VAT included or not