Kent · England
External Mastic in Barrowhill
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Barrowhill. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Movement joints filled with mortar instead of sealant
- Joints with sealant missing in places
- Damp patches traced to an open external joint
External mastic in Barrowhill, done properly
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We strip the joint back and start again. We work on brickwork movement joints, render & cladding joints and façade panels, and the jobs we see most are hard, crazed mastic that has stopped moving and moss and dirt in joints with no sealant left.
External sealant needs dry, clean surfaces, so work around Barrowhill is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Barrowhill (TN25)
- Wider area
- Kent
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Cracking across the wall rather than at a joint
- Failed render or damaged cladding panels
- Adding movement joints to masonry that has none
If you are not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Façade panels
- Render & cladding joints
Places near Barrowhill
Other services in Barrowhill
External mastic in Barrowhill: local notes
Historic houses like Westenhanger Castle (about 1 mile east) are a reminder that the area around Barrowhill has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you look after a building such as Sellindge Primary School, its movement joints, gutters and trims need looking after like any other building’s. For landlords with property near Westenhanger station, outside joints that have cracked can let damp into a rental, so check them between lets.
Barrowhill is about 4 miles north-west of Hythe, in Kent. Whether you are in the middle of Barrowhill or further out, we cover external mastic for every kind of property. Across Kent, we cover 922 places, Barrowhill among them. Chelmsford is on our list too, around 50 miles away.
We work across the TN25 postcode area for external mastic. If you need external mastic at a property on Barrow Hill, Bernhurst Close and Meadow Grove or anywhere close by, we can help. We also cover Westenhanger (1 mile east), Newingreen (1 mile south-east), Berwick (2 miles south-east), Lympne (2 miles south-east) and West Hythe (2 miles south-east). Larger places within reach include Ashford (7 miles north-west), Canterbury (13 miles north), Dover (13 miles east), Folkestone (7 miles east), Hythe (4 miles south-east) and Tower Hamlets (13 miles east).
Around Barrowhill
Locally, jobs take us to homes and businesses close to Sandling Park. For rail, the closest station is Westenhanger station, about 1.3 miles east of the centre. Other landmarks nearby include William Harvey Hospital (5.1 miles north-west) and Lympne Castle (1.9 miles south). Open spaces near Barrowhill include Hatch Park and Tolsford Hill.
How the visit works
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes anything from a few hours to several days, depending on the building. Somewhere as small as Barrowhill, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Let us know about earlier repairs to the joints
- Mention any sign-in or site rules at work premises
Getting a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. A few pictures by email make the job easier to understand, and we’ll take it from there.
Related advice
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Landlord and commercial work in Barrowhill
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Housing providers, facilities teams and property managers book us too in Barrowhill and across Kent. Several sites can go on one quote, and we are fully insured.
What happens if it’s left?
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way. Where a wall is exposed, as many are in small places like Barrowhill, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What you get with us
- We never seal over old sealant
- Arbo and Everbuild products
- We leave the area clean and tidy
- Sealant colour chosen to suit
Take a look at our cost guide and what customers say.
When to call us in Barrowhill
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
It’s worth asking for a quote if you see:
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
- Gaps where render, brick and frames meet
- Panel joints letting water in
Homes close to Church of St Mary include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- The length of the guarantee
- What insurance they hold
- Whether VAT is included
- Whether the sealant suits the joint
Barrowhill questions
Can you do external mastic in Barrowhill?
Yes. Our work covers London and the South East, and Barrowhill is part of that. You can ring 0345 464 0079 or email us and tell us what needs doing, and we’ll send you a clear quote.
Do you cover smaller places like Barrowhill?
Yes, Barrowhill is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Does someone need to be in?
Access is agreed with you when the job is booked. Indoors, that usually means someone at home.
How do you reach high-level joints?
It depends on the building. Tell us the height, the number of joints and what’s below them, and we will confirm what access is needed.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
What colours does the sealant come in?
We aim for a joint that suits the wall rather than one that jumps out. We’ll talk through colour options before we start, matched as closely as the range allows.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Are you insured?
Yes. We are fully insured for domestic and commercial work.
What affects the cost of external mastic
There’s no set price list, because jobs vary so much. The quote depends on:
- Mould in or behind the old joints
- The number and length of the joints
- When we can work, for business premises
- Access and height
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear price for the lot.
Asking for a quote
When you call or email, it’s useful to know:
- Where the property is
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- Any previous sealing or DIY work
Every job is quoted individually. Simply phone 0345 464 0079 or drop us an email and describe the job.