Kent · England
External & façade joints in Horton Kirby, Kent
Professional external mastic in and around Horton Kirby, with old sealant always removed completely.
- Failed seals between different materials
- Joints pointed up with cement by mistake
- Sealant that has lost its bond to the brick or render
How we handle external mastic in Horton Kirby
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where mortar or filler would crack. Common call-outs are for sealant pulling away from one side of the joint and moss and dirt in joints with no sealant left, on concrete & block, copings & trims and façade panels.
Around Horton Kirby, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water normally gets in.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or drop us an email.
- Where
- Horton Kirby (DA4)
- Region
- Kent
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the cost of external mastic
Your quote is based on your job. We look at:
- The number of rooms or windows
- Whether the work is at height
- The size of the job
- The product the joint needs
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
What to tell us for a quote
Photos help, but a description is a good start. Please mention:
- The problem you’ve noticed
- The type of property
- The rough size of the job
- A few pictures by email, if you can
For external mastic in Horton Kirby, ring 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Also near Horton Kirby
Also in Horton Kirby
Aftercare tips
Joint life depends on how it’s used and looked after. We suggest:
- Avoid pressure-washing directly into sealant joints
- Tell anyone working on the walls about the movement joints
- Make sure movement joints aren’t pointed over
- Check external joints each spring
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
Once a joint cannot move, the wall finds another way, normally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
What external mastic looks like in Horton Kirby
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. With historic houses such as Lullingstone Castle (about 3.2 miles south-west) nearby, there’s older building stock in the area around Horton Kirby as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you look after a building such as Horton Kirby Church of England Primary School, its movement joints, gutters and trims need looking after like any other building’s. Homes close to The Parish Church of Saint Mary include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move. Rented homes near Farningham Road station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Horton Kirby is about 4 miles south of Dartford, in Kent. Homes, rented property, offices and hotels in Horton Kirby can book us for external mastic, old or new, large or small. The work is guaranteed for a year. 922 places in Kent are on our list, large and small. There’s also a page for London, about 16 miles away.
All of DA4 is within our area for external mastic, from the main roads to the quietest streets. Whether your property is on The Street, Rashleigh Way and Churchill Road or anywhere close by, our applicators can take on the job. We also cover the places around Horton Kirby: Farningham (1 mile south-west), Speed Gate (2 miles south-east), Eynsford (2 miles south-west), Fawkham Green (2 miles south-east) and Maplescombe (3 miles south). We also work in nearby towns such as Maidstone (15 miles south-east), Dartford (4 miles north), Sevenoaks (8 miles south), Gravesend (6 miles north-east), Tonbridge (13 miles south) and Northfleet (5 miles north-east).
What’s near Horton Kirby
Typical jobs here are in homes near The Fighting Cocks pub and the streets around them. Horton Kirby’s nearest station is Farningham Road station, roughly 0.8 miles north-west. A little further out are Darenth Park Hospital (3 miles north) and Bluewater (3.5 miles north). For a walk, there’s Sawyers Lake and Wansunt Pit.
The process
On the day, we start by going over the job with you, so there are no surprises. We protect the surfaces around the joints before work begins. Most jobs take anything from a few hours to several days, depending on the building. Somewhere as small as Horton Kirby, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- 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.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- On commercial sites, let us know about site rules
- Let us know if you’ve seen damp or leaks
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. When it suits you, ring 0345 464 0079 or drop us an email.
Advice
Why act early in Horton Kirby
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Around Horton Kirby, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost reflects the work involved, not guesswork. That’s why we ask about the job first.
Why Horton Kirby clients choose us
- Full insurance on every job
- A 12-month guarantee on all work
- Sealant colour chosen to suit
- We agree the colour with you first
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Surface by surface
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Landlords, agents and businesses in Horton Kirby
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Your questions about external mastic in Horton Kirby
Will you come out to Horton Kirby?
Yes, Horton Kirby is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Farningham Road station. Can you help?
Yes, rental work is part of what we do. 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.
Are you fully insured?
Yes, we are fully insured for domestic and commercial work.
Is there any odour?
It depends on the product. Some smell for a while, some hardly at all.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. The old sealant has to come out completely.
Do you work at height?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we will confirm what access is needed.
Is there a guarantee?
Yes. Every job comes with our one-year guarantee.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.