Kent · England
Lenham Heath External Mastic
External mastic for Lenham Heath and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Brick movement joints where the sealant has split
- Old sealant gone brittle and cracked
- Failed sealant between panels on a façade
External mastic in Lenham Heath, done properly
On houses, flats and commercial buildings across Lenham Heath, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. We work on brickwork movement joints, concrete & block and joints between brick and frames, and people most often call us about water getting into walls through failed joints and brick movement joints where the sealant has split.
Around Lenham Heath, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in.
We stand behind the work with a 12-month guarantee.
- Location
- Lenham Heath (ME17)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Quotes for external mastic in Lenham Heath
Every job gets its own quote. These are the things that affect it:
- Which sealant suits the joint
- The old material and how stubborn it is
- The number and length of the joints
- How many rooms, windows or areas are involved
The cost reflects the work involved, not guesswork. That’s why we ask about the job first and agree the price before starting.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- How many joints, rooms or windows are involved
- What’s wrong with the joints now
- Any access issues, like height or stairs
- Where the property is
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. Whenever you are ready, ring 0345 464 0079 or email us.
Signs you need external mastic in Lenham Heath
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Keep an eye out for any of the following:
- Water getting into walls through failed joints
- Movement joints with cracked, split or missing sealant
- Cracked joints where brick meets render or frames
- Plants rooting in failed movement joints
For site and facilities teams at buildings such as The Lenham School, larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before booking
- Are they insured?
- How long to leave it before use
- How much experience the applicator has
- The length of the guarantee
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Towns and villages near Lenham Heath
What else we do in Lenham Heath
What happens if it’s left?
Running new sealant over the old bead rarely lasts. New sealant does not bond well to old, weathered sealant, so the old joint is cut out fully first. Older cottages and farmhouses around Lenham Heath can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Why book with us
- ARBOMaster approved applicator
- Any old sealant cut out fully, not covered over
- Neat joints and a tidy finish
- Trusted Arbo and Everbuild sealants
Take a look at how sealant jobs are priced and customer reviews.
Lenham Heath questions
Will you come out to Lenham Heath?
Yes. Lenham Heath is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do external mastic in Lenham Heath?
Yes, Lenham Heath is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
Can you reach joints on upper floors?
That depends on how high the joints are and the ground below. Low-level joints are straightforward; for higher work, tell us about the building and we’ll confirm what’s needed.
Do you work for letting agents?
Yes. We work for householders, landlords, letting agents, businesses and hotels in Lenham Heath.
Is there a guarantee?
Yes, always. Each job is guaranteed for twelve months, large or small.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
How much does external mastic cost in Lenham Heath?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How often do external joints need resealing?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. A yearly look will tell you when they need doing. Every job carries our 12-month guarantee.
How the visit works
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Lenham Heath needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Getting ready for the visit
- Tell us if parking is tricky
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
Getting a quote
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
Advice
What we can’t put right
Sealant isn’t the answer to every problem, and we will tell you before we start. Sealant won’t put right:
- Adding movement joints to masonry that has none
- Movement that’s more than a sealant joint can take
- Damp that is not coming from the joint
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Surfaces we seal
- Copings & trims
- Façade panels
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
What the job involves on each surface
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
Cladding and façade panels
Where a cladding system has its own specified sealant, we follow it. Tell us what the building has when you get in touch.
Lenham Heath buildings and the weather
London and the South East are among 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 live in an older home near Church of the Holy Trinity, an extension built onto an older house moves differently, and the joint between them takes the strain. Letting a property close to Lenham station? Then split movement joints are easy to miss on a rental until damp shows inside.
Lenham Heath is about 8 miles north-west of Ashford, in Kent. Lenham Heath gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Lenham Heath is one of 922 towns and villages in Kent we cover for external mastic. We also work in Chelmsford, about 38 miles from Lenham Heath.
All of ME17 is covered for external mastic. Streets in the area include Lenham Forstal Road, Crabtree Lane and Rose Lane, and we cover them all. We also cover the places around Lenham Heath: Lenham Forstal (1 mile north-west), Charing Heath (1 mile south-east), Stonebridge Green (1 mile south), Leadingcross Green (2 miles north-west) and Lenham (2 miles north-west). Within a short drive, we also cover Maidstone (10 miles west), Ashford (8 miles south-east), Canterbury (15 miles east), Sittingbourne (9 miles north), Faversham (9 miles north-east) and Minster (14 miles north).
Local landmarks in Lenham Heath
Typical jobs here are in homes near The Red Lion Inn, among other places. The closest station to Lenham Heath is Lenham station, about 2 miles north-west of the centre. Nearby you will also find Coldbridge Castle (2.4 miles south-west).