Kent · England
External Mastic in Detling
We cover Detling for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and a 12-month guarantee.
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
- Cracked joints where brick meets render or frames
External mastic in Detling, done properly
Movement joints let brickwork, render and cladding expand and shrink without cracking. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. We work on render & cladding joints, joints between brick and frames and brickwork movement joints, and common reasons people get in touch are sealant that has lost its bond to the brick or render and joints with sealant missing in places.
Outside joints can only be sealed when they’re dry, so work in Detling is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
There’s a 12-month guarantee on every job, whatever its size.
- Location
- Detling (ME14)
- Region
- Kent
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
The process
We keep the work tidy and contained to the joints we are treating, so you can get on with your day. The job usually takes a few hours for a handful of joints, longer for a whole elevation, and we explain the cure time before we leave. For a village or hamlet like Detling, 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 inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
Getting ready for the visit
- Mention any parking rules near the property
- Tell us about any previous sealing or DIY attempts
- Mention any sign-in or site rules at work premises
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Related advice
Detling: your questions answered
Can you do external mastic in Detling?
Yes, Detling is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or email us and tell us what needs doing.
Do you cover smaller places like Detling?
Yes. Detling is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
How long should I leave it?
It depends on the product. We tell you how long to leave it before we go.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
How do I get a quote for external mastic in Detling?
Every job is different, so each one gets its own quote. To get one, phone 0345 464 0079 or drop us an email with a short description of the job.
Will you leave a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How often do external joints need resealing?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
When it is not the sealant
A few problems are outside what sealant work can do:
- Render that’s blown, hollow or coming away
- Cutting new joints into brickwork, which is building work rather than sealant work
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can phone 0345 464 0079 or send us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Façade panels
- Brickwork movement joints
- Concrete & block
Different surfaces, different methods
Copings and trims
Copings expand and contract through the day, so a flexible sealant suits them best in all weathers.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant.
Places near Detling
What else we do in Detling
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Keep water from gutters off the wall
- Wash walls gently around the sealant
- Ask before painting over external sealant
- Act on the first splits you see
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
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 which cost more to put right than the joint.
Signs you need external mastic in Detling
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
People usually contact us when they notice one of these:
- Joints pointed up with cement by mistake
- Plants rooting in failed movement joints
- Gaps where render, brick and frames meet
- Brick movement joints where the sealant has split
If you live in an older home near St Martin of Tours Church, an extension built onto an older house moves differently, and the joint between them takes the strain.
What your quote should include
- What the quote includes, VAT included or not
- How long the guarantee is
- How the colour is chosen
- Whether they seal over old material or remove it
How we quote for external mastic
Your quote is based on your job. We take into account:
- When we can work, for business premises
- How many areas need sealing
- How much old sealant there is and how hard it is to remove
- The type of sealant required
Leaving a failed joint normally makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, ring 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
What we need to know
To help us quote quickly, let us know:
- What’s wrong with the joints now
- Roughly how big the job is
- Photos by email, if that is easy
- Access, such as stairs, a lift or height
For external mastic in Detling, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
What external mastic looks like in Detling
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Stoneacre (about 3 miles south) nearby, there’s older building stock in the area around Detling as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Schools such as Valley Park School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you let a flat or house near Bearsted station, split movement joints are easy to miss on a rental until damp shows inside.
Detling is about 3 miles north-east of Maidstone, in Kent. Wherever you are in the ME14 postcode area, we cover external mastic for homes and businesses. 922 places in Kent are on our list, large and small. Our Chelmsford page covers work nearby.
Postcode districts we cover here for external mastic: ME14. Whether your property is on The Street, Princes Way and Queens Way or anywhere close by, our applicators can take on the job. Neighbouring places we cover for external mastic include Thurnham (1 mile south-east), Grove Green (1 mile south-west), Harbourland (1 mile west), Weavering (2 miles south) and Bearsted (2 miles south). We also work in nearby towns such as Maidstone (3 miles south-west), Sittingbourne (8 miles north-east), Gravesend (12 miles north-west), Tonbridge (14 miles south-west), Faversham (14 miles east) and Northfleet (14 miles north-west).
Near you in Detling
We work in homes and buildings around The Larches and The Cock Horse pub, among other places. For rail, the closest station is Bearsted station, roughly 1.4 miles south of the centre. A little further out are KIMS hospital (0.8 miles south-west) and The Mall Maidstone (2.4 miles south-west). Not far away are Burham Down and Detling Hill.
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
We work for letting agents and landlords as well as householders. Resealing between tenancies is a simple way to keep a property in good order.