Kent · England
External Mastic in Lullingstone
Problem with your movement joints in Lullingstone? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Gaps where render, brick and frames meet
- Weeds or debris growing in open joints
- Joints where the bead has come unstuck
For landlords and businesses
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
We work for landlords and letting agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
External mastic in Lullingstone
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render. We work on façade panels, joints between brick and frames and concrete & block, and people most often call us about joints where the bead has come unstuck and moss and dirt in joints with no sealant left.
External sealant needs dry, clean surfaces, so work around Lullingstone is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
We stand behind the work with a one-year guarantee.
- Place
- Lullingstone (DA4)
- Region
- Kent
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from Lullingstone
Is Lullingstone within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Eynsford station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few photos.
Can a movement joint be filled with mortar?
No. Cement or mortar can’t stretch, so the joint stops doing its job. Where a joint has been mortared, it can often be raked out and sealed properly.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
How long will you be here?
Most jobs take a few hours to a few days, depending on the length of joint and the access, including preparation and clearing up. Your quote will say how long we expect yours to take.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
What do you put in the joint?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we’re using and why.
How we quote for external mastic
There’s no set price list. The quote depends on:
- When we can work, for business premises
- How many areas need sealing
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
Combining jobs into one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Helping us quote
To help us quote quickly, let us know:
- A few pictures by email, if you can
- Whether it’s a home or a business
- Roughly how big the job is
- Where the property is
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Nearby places to Lullingstone
Also in Lullingstone
Surface by surface
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so neither cracks the other.
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
Joint life depends on how it’s used and looked after. We suggest:
- Don’t let climbing plants root in the sealant
- Get split or bare joints resealed while the damage is small
- Fix overflowing gutters above sealed joints
- Tell anyone working on the walls about the movement joints
Don’t let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
When to call us in Lullingstone
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
Keep an eye out for these signs:
- Gaps where render, brick and frames meet
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
- Failed sealant between panels on a façade
For an older house near a landmark such as Church of Saint Botolph, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Comparing quotes
- How long the guarantee is
- How the joint is cleaned and prepared
- How the colour is chosen
- Which sealant they’ll use, and why
When it isn’t the sealant
It helps to know what we can’t do too:
- Loose or hollow render, which needs re-rendering
- Walls that need new movement joints cut into them
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Surfaces we seal
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Façade panels
- Brickwork movement joints
What external mastic looks like in Lullingstone
With historic houses such as Lullingstone Castle (about 0.1 miles east) nearby, there’s older building stock in the area around Lullingstone as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Eynsford station, outside joints that have cracked can let damp into a rental, so check them between lets.
Lullingstone is about 3 miles south of Swanley, in Kent. Homes, rented property, offices and hotels in Lullingstone can book us for external mastic. The work is guaranteed for a year. Lullingstone is one of 922 towns and villages in Kent we cover for external mastic. You can also see our page for London, about 16 miles away.
Jobs for external mastic in DA4 is quoted and booked the same way as anywhere else. Other places close to Lullingstone include Shoreham (2 miles south), Well Hill (2 miles west), Crockenhill (2 miles north-west), Maypole (2 miles west) and Bopeep (2 miles west). Larger places within reach include Dartford (6 miles north), Sevenoaks (5 miles south), Gravesend (9 miles north-east), Tonbridge (12 miles south), Northfleet (8 miles north-east) and Swanley (3 miles north).
Around Lullingstone
Locally, jobs take us to homes and businesses close to The Malt Shovel pub and Raspberry Hall Park, among other places. Lullingstone’s nearest station is Eynsford station, roughly 0.6 miles north-east. Nearby you will also find Lullingstone Castle (within half a mile east) and Orpington Hospital (4.2 miles west). The countryside around Lullingstone includes The Warren.
What we do, step by step
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours to a few days, depending on the length of joint and the access. Somewhere like Lullingstone needs a little journey planning: 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 walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Clear the area around the work
- Let us know about parking restrictions
Get a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.