Kent · England
Lympne External Mastic
We cover Lympne for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Weathered mastic that no longer stretches
- Gaps where render, brick and frames meet
- Brick movement joints where the sealant has split
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
About our external mastic in Lympne
Movement joints let brickwork, render and cladding expand and shrink without cracking. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. If you have movement joints with cracked, split or missing sealant and water getting into walls through failed joints, we can help.
In a village or hamlet like Lympne, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Location
- Lympne (CT21)
- Region
- Kent
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Lympne
Also in Lympne
How the visit works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Lympne, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- 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.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about parking restrictions
- Clear items away from the joints we’re working on
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Advice
What external mastic looks like in Lympne
Lympne is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. With historic houses such as Westenhanger Castle (about 1.3 miles north) nearby, there’s older building stock in the area around Lympne as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
For site and facilities teams at buildings such as Lympne Church of England Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to Church of St Stephen include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Lympne is about 2 miles west of Hythe, in Kent. Anywhere in CT21, we cover external mastic for homes and businesses. We cover 922 towns and villages across Kent, from the larger towns to small villages. For nearby work, see our Chelmsford page, about 51 miles away.
Here we cover the CT21 postcode area for external mastic. Whether your property is on The Street, Harman Avenue and Tourney Close or a nearby road, our applicators can take on the job. Other places close to Lympne include Berwick (1 mile north-east), West Hythe (1 mile south-east), Newingreen (1 mile north-east), Westenhanger (1 mile north-east) and Pedlinge (1 mile east). Larger places within reach include Ashford (8 miles north-west), Canterbury (14 miles north), Dover (13 miles east), Folkestone (6 miles east), Tower Hamlets (12 miles east) and Hawkinge (6 miles north-east).
Near you in Lympne
We work in homes and buildings around The Royal Oak Public House, Sandling Park and Brockhill Park Performing Arts College and the streets around them. For rail, the closest station is Westenhanger station, about 1.4 miles north-east of the centre. Well-known places in the area include Lympne Castle (under half a mile south) and Hythe Museum (2.6 miles east). Not far away are Tolsford Hill.
Signs you need external mastic in Lympne
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
Any of these means the joints need attention:
- Joints pointed up with cement by mistake
- Weeds or debris growing in open joints
- Hard, crazed mastic that has stopped moving
- Rain getting behind render or cladding at a joint
For landlords with property near Westenhanger station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- What product goes in the joint
- Whether VAT is included
- Is the old sealant removed completely?
- How long to leave it before use
Surface by surface
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant where it can be done safely.
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Tell anyone working on the walls about the movement joints
- Fix overflowing gutters above sealed joints
- Keep movement joints as flexible joints, not mortar
- Walk round the building once a year and look at the joints
Make sure anyone working on the wall later knows where the movement joints are. They should be kept open and resealed, not filled.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
Landlords, agents and businesses in Lympne
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
What we can’t put right
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Cracks in the bricks or render themselves, away from the joints
- Cutting new joints into brickwork, which is building work rather than sealant work
- Subsidence or other structural problems
If in doubt, call 0345 464 0079 or email us and we will say what we think before booking.
Surfaces we seal
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
- Façade panels
- Concrete & block
Common questions in Lympne
Is external mastic in a coastal place like Lympne any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Is Lympne within the area you cover?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
What is backing rod for?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
Can you do several jobs on one visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient.
How do I get a quote for external mastic in Lympne?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before we start.
How long before the joint can be used?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used.
Can landlords and businesses book you?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels.
How do you reach high-level joints?
It depends on the height and the site. Low-level joints are straightforward; for higher ones, send details and we’ll confirm the access.