Kent · England
External Mastic in Bessels Green
External mastic for Bessels Green, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Weathered mastic that no longer stretches
- Failed seals between different materials
- Sealant pulling away from one side of the joint
Outside joints around Bessels Green
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Knole House (about 2.2 miles south-east) nearby, there’s older building stock in the area around Bessels Green as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Letting a property close to Sevenoaks station? Then outside joints that have cracked can let damp into a rental, so check them between lets. In the older streets around Chapel of the Good Shepherd, the joints between older walls, newer extensions and the roofline need a sealant that can move. Schools such as Riverhead Infants' School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
Bessels Green is about 1 mile west of Sevenoaks, in Kent. Every kind of property in Bessels Green is covered for external mastic. Every job comes with our 12-month guarantee. Our area takes in 922 places across Kent, from the larger towns to small villages. You can also see our page for London, roughly 19 miles from Bessels Green.
All of TN13 and TN14 is within our area for external mastic. Whether your property is on High Street, Witches Lane and Cranmer Road or anywhere close by, our applicators can take on the job. If you’re just outside Bessels Green, we cover Chipstead (1 mile north-west), Riverhead (1 mile north-east), Kippington (1 mile south-east), Dunton Green (1 mile north-east) and Sevenoaks (1 mile east). Further out, we also cover Dartford (12 miles north), Royal Tunbridge Wells (11 miles south-east), Gravesend (14 miles north-east), Tonbridge (8 miles south-east), Northfleet (13 miles north-east) and Swanley (8 miles north).
Near you in Bessels Green
In Bessels Green, that means homes and buildings near Montreal Park, New Beacon School and The King's Head Public House, among other places. For rail, the closest station is Sevenoaks station, about 1 mile east of the centre. Well-known places in the area include Kemsing Castle Bank (3.6 miles north-east) and Sevenoaks Hospital (1.7 miles east). Green spaces nearby include Betsom's Hill and Dryhill Nature Reserve.
External mastic for homes and businesses in Bessels Green
On houses, flats and commercial buildings across Bessels Green, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean joint faces and the right depth. If you have joints where the bead has come unstuck and cracked joints where brick meets render or frames, we can help, on façade panels, joints between brick and frames and concrete & block alike.
Older homes in small places like Bessels Green may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Bessels Green (TN13, TN14)
- Wider area
- Kent
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Questions from Bessels Green
Can you do external mastic in Bessels Green?
Yes, Bessels Green is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and let us know what needs doing.
Do you cover smaller places like Bessels Green?
Yes. Bessels Green 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.
What sealant do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
What should I tell you?
A short description and the location, with photos by email if possible. If we need more, we’ll ask.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Will the old sealant be removed?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How long does external mastic last?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
I’m a tenant. Can you help?
Of course. Ask your landlord first, and we can send them the quote if that helps.
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
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.
Different surfaces, different methods
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best year round.
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 the movement is taken up.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Avoid pressure-washing directly into sealant joints
- Ask before painting over external sealant
- Check external joints each spring
- Point out the joints to other trades
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Leave a failed movement joint and water keeps getting into the wall. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
Honest limits
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Rising or penetrating damp from elsewhere in the wall
- Render that’s blown, hollow or coming away
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
What affects the quote in Bessels Green
The price is agreed before any work begins. It’s based on:
- The product the joint needs
- How easy the joints are to reach
- The number and length of the joints
- Any working-time requirements on site
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Asking for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Photos by email, if that’s easy
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
- The problem you’ve noticed
Asking for a quote is easy: let us know the job and the location. A few photos by email make the job easier to understand, and we will take it from there.
Landlords, agents and businesses in Bessels Green
Letting agents and landlords in Bessels Green can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
How it works
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to several days, depending on the building, including the tidy-up. In a small place like Bessels Green, 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 checking each joint, agreeing the ones to redo and how we’ll reach them.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about earlier repairs to the joints
- Mention any sign-in or site rules at work premises
Getting a quote
To get a quote, ring 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 price before any work starts.