Kent · England
External & façade joints in Addington, Kent
External mastic for Addington, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Moss and dirt in joints with no sealant left
- Movement joints with cracked, split or missing sealant
- Cracked joints where brick meets render or frames
External mastic for homes and businesses in Addington
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. Typical jobs include damp patches traced to an open external joint and weeds or debris growing in open joints, across render & cladding joints, façade panels and brickwork movement joints.
Somewhere as small as Addington, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
There’s a 12-month guarantee on every job, large or small.
- Location
- Addington (ME19)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Addington
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
Any of these means the joints need attention:
- Rain getting behind render or cladding at a joint
- Cracked joints where brick meets render or frames
- Joints where the bead has come unstuck
- Joints pointed up with cement by mistake
For landlords with property near West Malling station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- How the surfaces are prepared before sealing
- Whether they seal over old material or remove it
- What happens if they find a problem under the old sealant
- What product goes in the joint
Common questions in Addington
Can you do external mastic in Addington?
Yes. We work across London and the South East, and Addington is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we will send you a clear quote.
Can you help a landlord with a rental near West Malling station?
Yes. We work for letting agents and landlords as well as homeowners, and several properties can be quoted together. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we’ll give you a clear quote.
How long will you be here?
As a guide, most jobs take a few hours to a few days, depending on the length of joint and the access. Larger jobs naturally take longer, and we’ll tell you how long to expect.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is generally more efficient, so mention them when you ask for a quote.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. We will talk through colour options before work begins, matched as closely as the range allows.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used before we leave.
What is a movement joint?
Brickwork, render and cladding all move a little, and planned joints take up that movement. The gap is sealed with a flexible sealant over backing rod.
What happens on the day
You don’t need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the building in most cases. In a small place like Addington, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Move anything stored near the joints
- On commercial sites, let us know about site rules
- Try not to wet indoor joints just before the visit
Get a quote
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or send us an email with the details.
Read more
When something else is needed
To be straight with you, some problems need a different trade:
- Structural movement, which needs a surveyor or engineer
- Adding movement joints to masonry that has none
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, phone 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Render & cladding joints
- Façade panels
- Joints between brick and frames
- Concrete & block
- Copings & trims
- Brickwork movement joints
How we quote for external mastic
The price is agreed before any work begins. It takes into account:
- How easy the joints are to reach
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- The product the joint needs
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Helping us quote
To make quoting easier, let us know:
- Whether it’s a home or a business
- If someone has resealed it before
- The rough size of the job
- Access, such as stairs, a lift or height
Want a quote for external mastic? Please call 0345 464 0079 or send us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Places near Addington
More services for Addington
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We also work for property managers and facilities teams in Addington and across Kent. Several sites can go on one quote, and we are fully insured for the work.
Can I do it myself?
If you’re set on DIY, put the effort into 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.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Outside joints around Addington
Historic houses like Old Soar Manor (about 3.9 miles south-west) are a reminder that the area around Addington has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For an older house near a landmark such as Church of St Margaret, an extension built onto an older house moves differently, and the joint between them takes the strain. For site and facilities teams at buildings such as Offham Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Addington is about 7 miles north-west of Maidstone, in Kent. Every kind of property in Addington is covered for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across Kent, we cover 922 places, Addington among them. We also work in London, about 25 miles from Addington.
All of ME19 is within our area for external mastic. We cover properties on London Road, The Links and Trottiscliffe Road. Nearby, we also carry out external mastic in Ryarsh (1 mile north-east), Trottiscliffe (1 mile north-west), Vigo Village (2 miles north-west), Culverstone Green (3 miles north-west) and Harvel (3 miles north). Within a short drive, we also cover Maidstone (7 miles south-east), Sittingbourne (15 miles east), Dartford (12 miles north-west), Sevenoaks (9 miles west), Royal Tunbridge Wells (13 miles south-west) and Gravesend (9 miles north).
What’s near Addington
We work in homes and buildings around The Angel Inn, The Malling School and Manor Park Country Park, among other places. The closest station to Addington is West Malling station, about 1.8 miles south-east. Well-known places in the area include Coldrum Long Barrow (1.2 miles north) and Leybourne Castle (1.7 miles east).
Keeping the joints in good condition
Looking after new joints is easy, and it makes a real difference:
- Fix overflowing gutters above sealed joints
- Have failed joints looked at early
- Make sure movement joints are not pointed over
- Clear growth from the base of walls and joints
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.