Kent · England
Throwley External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Throwley. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Sealant that has lost its bond to the brick or render
- Gaps where render, brick and frames meet
- Leaking joints around cladding and façade panels
External mastic in Throwley
A movement joint is a deliberate break that lets a wall expand and contract. Its sealant has to flex with the building, season after season, and when it fails, the wall takes the strain and water finds a way in. If you are dealing with weathered mastic that no longer stretches and failed seals between different materials, we can put it right, on joints between brick and frames, render & cladding joints and copings & trims alike.
Around Throwley, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in.
All of our work is guaranteed for twelve months, in Throwley and everywhere else we cover.
- Where
- Throwley (ME13)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Places near Throwley
What else we do in Throwley
Landlord and commercial work in Throwley
If you manage several properties in or around Throwley, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Hotels need rooms back in use, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
What happens if it’s left?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost near the open joint, so the damage spreads beyond the joint. Where a wall is exposed, as many are in small places like Throwley, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Why us?
- We leave the area clean and tidy
- Domestic, commercial and hotel work
- Colour agreed with you before work begins
- A sealant colour to suit the surroundings
Read our cost guide or our reviews.
What we are called out for in Throwley
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
It’s worth asking for a quote if you see:
- Old sealant gone brittle and cracked
- Weeds or debris growing in open joints
- Sealant pulling away from one side of the joint
- Failed seals between different materials
In the older streets around Church of St Michael and All Angels, an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- What the quote includes, VAT included or not
- Who does the work, and how experienced they are
- How the joint is cleaned and prepared
- What guarantee comes with the work
What affects the cost of external mastic
Call for a quick quote. The main things that affect it are:
- When we can work, for business premises
- Mould in or behind the old joints
- How easy the joints are to reach
- The size of the job
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email.
Helping us quote
When you call or email, these details help:
- The rough size of the job
- Where the property is
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
Need a quote? Please phone 0345 464 0079 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
External mastic in Throwley: local notes
With historic houses such as Belmont House and Gardens (about 0.6 miles north-west) nearby, there’s older building stock in the area around Throwley as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Faversham station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Throwley is about 4 miles south of Faversham, in Kent. For external mastic in and around Throwley, please ring 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Kent. Throwley is one of 922 towns and villages in Kent where we work. We also work in Chelmsford, about 36 miles from Throwley.
Jobs for external mastic in ME13 works the same way as everywhere else we cover. Neighbouring places we cover for external mastic include Throwley Forstal (1 mile south), Sheldwich (1 mile north-east), Badlesmere (1 mile east), Sheldwich Lees (1 mile east) and Eastling (2 miles north-west). Larger places within reach include Maidstone (14 miles west), Ashford (9 miles south), Canterbury (10 miles east), Sittingbourne (7 miles north-west), Whitstable (10 miles north-east) and Faversham (4 miles north).
Around Throwley
The closest station to Throwley is Faversham station, about 3.6 miles north-east of the centre. Well-known places in the area include Newnham Castle (2.7 miles north-west).
The process
On the day, there’s very little for you to do. 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, including the tidy-up. In a small place like Throwley, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Mention any parking rules near the property
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
How to get a quote
We do not publish a price list. Instead, we give you a clear quote for your job. To get started, ring 0345 464 0079 or email us.
Advice
Throwley: your questions answered
Can you help a landlord with a rental near Faversham station?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Is Throwley within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
How long will you be here?
A typical job takes anything from a few hours to several days, depending on the building. We will confirm how long when we quote.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Where are you based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Can you do several jobs on one visit?
Yes. Just list everything you need and we’ll quote it together.
Do I need to be at home?
We need access to the joints, so we will agree that with you when we book. Indoors, that usually means someone at home.
Are you an approved applicator?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
- Render that is blown, hollow or coming away
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
What we seal
- Brickwork movement joints
- Copings & trims
- Façade panels
- Joints between brick and frames
- Concrete & block
- Render & cladding joints