Kent · England
External Mastic in Wrotham Heath
We cover Wrotham Heath 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.
- Movement joints with cracked, split or missing sealant
- Plants rooting in failed movement joints
- Hard, crazed mastic that has stopped moving
About our external mastic in Wrotham Heath
On houses, flats and commercial buildings across Wrotham Heath, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean joint faces and the right depth. We work on concrete & block, brickwork movement joints and render & cladding joints, and the jobs we see most are cracked joints where brick meets render or frames and old sealant gone brittle and cracked.
Outside joints can only be sealed when they’re dry, so work in Wrotham Heath is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
Whatever the size of the job, you get the same 12-month guarantee in Wrotham Heath and across Kent.
- Place
- Wrotham Heath (ME19, TN15)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. We reseal them with a sealant suited to the panel material.
Other services in Wrotham Heath
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
What affects the cost of external mastic
You will get a clear quote before work begins. It takes into account:
- Whether the work is at height
- The size of the job
- Working hours on commercial sites
- How many rooms, windows or areas are involved
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. We take all of that into account in your quote.
What we need to know
Before you ask for a quote, have a think about:
- A few pictures by email, if you can
- The type of property
- How we’d reach the joints
- What’s wrong with the joints now
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, phone 0345 464 0079 or drop us an email.
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracked brickwork or render that needs a builder or plasterer
- Structural movement, which needs a surveyor or engineer
If you are not sure, just phone 0345 464 0079 or send us an email and we will give you a straight answer before you book.
Joints and surfaces we work on
- Render & cladding joints
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
- Copings & trims
- Concrete & block
Walls and rooflines in Wrotham Heath
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 Old Soar Manor (about 2.7 miles south-west) nearby, there’s older building stock in the area around Wrotham Heath as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
If you live in an older home near Church of St Margaret, the joints between older walls, newer extensions and the roofline need a sealant that can move. Rented homes near Borough Green & Wrotham station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Wrotham Heath is about 7 miles east of Sevenoaks, in Kent. Across the ME19 area, we cover external mastic for homes and businesses. Our Kent coverage runs to 922 places, and Wrotham Heath is one of them. London is on our list too, about 24 miles from Wrotham Heath.
Our applicators cover all of the ME19 and TN15 postcode area for external mastic. Streets in the area include London Road, Sandy Lane and Clearway. If you are just outside Wrotham Heath, we cover Comp (1 mile south-west), Platt (1 mile south-west), Offham (1 mile east), Borough Green (2 miles west) and Crouch (2 miles south-west). Further out, we also cover Maidstone (8 miles east), Dartford (11 miles north-west), Sevenoaks (7 miles west), Royal Tunbridge Wells (12 miles south), Gravesend (9 miles north) and Tonbridge (8 miles south-west).
What’s near Wrotham Heath
Locally, jobs take us to homes and businesses close to Wrotham School and Trosley Country Park. The nearest railway station is Borough Green & Wrotham station, about 1.9 miles west of the centre. Other landmarks nearby include Beechin Wood Archery Museum (1.2 miles south-west) and Ightham Court (2.7 miles west).
Landlords, agents and businesses in Wrotham Heath
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
If you manage several properties in or around Wrotham Heath, several properties can go on one quote. Just tell us the addresses and what each one needs.
Do you need external mastic in Wrotham Heath?
Weeds, moss and debris in a joint are a sign the sealant has gone. Roots and dirt hold water against the wall.
Look out for any of the following:
- Moss and dirt in joints with no sealant left
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Brick movement joints where the sealant has split
Schools such as Platt Church of England Voluntary Aided Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Comparing quotes
- Is the old sealant removed completely?
- What guarantee comes with the work
- How long to leave it before use
- How the joint is cleaned and prepared
What we do, step by step
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours for a handful of joints, longer for a whole elevation. Somewhere like Wrotham Heath needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First, the joints are inspected and the access agreed.
- 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.
How to prepare
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
- Mention any tricky access
Get a quote
If you’re in Wrotham Heath and need external mastic, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Advice
Wrotham Heath questions
Can you help a landlord with a rental near Borough Green & Wrotham station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Do you cover smaller places like Wrotham Heath?
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.
How long does external mastic take?
It depends on the size of the job, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We will tell you when we quote.
What do you put in the joint?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Will it make a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
What should I tell you?
A short description and the location, with photos by email if possible. We will ask anything else we need to know.
When is the sealant fully cured?
It depends on the product. Before we leave, we will tell you the cure time.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done.