Kent · England
External Mastic in Boughton under Blean
External mastic in Boughton under Blean from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old sealant gone brittle and cracked
- Joints where the bead has come unstuck
- Brick movement joints where the sealant has split
How to look after the new joints
So the new joints stay in good condition:
- Make sure movement joints are not pointed over
- Keep water from gutters off the wall
- Act on the first splits you see
- Look over the joints every year, ideally after winter
Do not paint over the new sealant unless we’ve said the product is paintable. Paint can crack on a flexible joint, and paint can crack as the joint moves.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years, so it’s worth resealing at the first signs.
External mastic for homes and businesses in Boughton under Blean
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. If you are dealing with rain getting behind render or cladding at a joint and gaps where render, brick and frames meet, we can help, whatever the surface.
Outside joints can only be sealed when they’re dry, so work in Boughton under Blean is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
All our work comes with our 12-month guarantee.
- Where
- Boughton under Blean (ME13)
- Region
- Kent
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Boughton under Blean
Also in Boughton under Blean
How the visit works
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the job takes a few hours to a few days, depending on the length of joint and the access in most cases. Somewhere as small as Boughton under Blean, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Let us know if you’ve seen damp or leaks
- Clear items away from the joints we’re working on
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work.
Advice
Different surfaces, different methods
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. We reseal them with an exterior sealant suited to the material.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so its sealant has to stay flexible.
Why act early in Boughton under Blean
Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Around Boughton under Blean, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Why book with us
- 12-month guarantee on every job
- Fully insured
- We leave the area clean and tidy
- Colour agreed with you before work begins
Take a look at what affects the cost and what customers say.
What external mastic looks like in Boughton under Blean
Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Selling station, outside joints that have cracked can let damp into a rental, so check them between lets. For an older house near a landmark such as St Barnabas, an extension built onto an older house moves differently, and the joint between them takes the strain.
Boughton under Blean is about 3 miles south-east of Faversham, in Kent. From the centre of Boughton under Blean to the outskirts, we cover external mastic for every kind of property. Our Kent coverage runs to 922 places, Boughton under Blean among them. For nearby work, see our Chelmsford page (37 miles or so).
Our applicators cover all of the ME13 postcode area for external mastic and the streets around it. Whether your property is on London Road, The Street and The Crescent or anywhere close by, we can help. If you’re just outside Boughton under Blean, we cover Hickmans Green (1 mile south-west), Winterbourne (1 mile south), Dunkirk (1 mile east), Oversland (1 mile south) and South Street (1 mile south-west). Larger places within reach include Ashford (11 miles south), Canterbury (5 miles east), Sittingbourne (10 miles west), Whitstable (5 miles north-east), Faversham (3 miles north-west) and Herne Bay (9 miles north-east).
What’s near Boughton under Blean
Typical jobs here are in homes near Mount Ephraim Gardens and The Queens Head pub, among other places. The nearest railway station is Selling station, about 1.4 miles south-west of the centre. Other landmarks nearby include Chilham Castle (3.5 miles south) and Eastbridge Hospital of St Thomas the Martyr (5.2 miles east). Open spaces near Boughton under Blean include Blean Woods RSPB Reserve.
Common problems we fix in Boughton under Blean
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.
Any of these means the joints need attention:
- Hard, crazed mastic that has stopped moving
- Cracked joints where brick meets render or frames
- Failed sealant between panels on a façade
- Brick movement joints where the sealant has split
If you look after a building such as Boughton-under-Blean and Dunkirk Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before booking
- How long to leave it before use
- What the quote includes, VAT included or not
- Which colour the sealant will be
- Whether they’re fully insured
Questions from Boughton under Blean
Do you cover Boughton under Blean for external mastic?
Yes, Boughton under Blean is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Can you help a landlord with a rental near Selling station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Do you hold any approvals?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Can you reach joints on upper floors?
It depends on the building. Send us pictures and a rough idea of the height.
Where is Mr Mastic based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned.
Are you insured?
Yes, we are fully insured.
For landlords and businesses
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
What affects the cost of external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- Whether there’s mould to deal with
- The product the joint needs
- The size of the job
- When we can work, for business premises
What you pay reflects the work, not guesswork. That is why we ask about the job first and agree the price before starting.
Asking for a quote
Before you ask for a quote, have a think about:
- If it’s domestic, commercial or a hotel
- How we’d reach the joints
- A few pictures by email, if you can
- Where the job is, and your postcode
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.