Kent · England
External & façade joints in Thanington, Kent
Specialist external mastic for Thanington: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Sealant pulling away from one side of the joint
- Rain getting behind render or cladding at a joint
- Weathered mastic that no longer stretches
Questions from Thanington
Is Thanington within the area you cover?
Yes, Thanington is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Do you cover Thanington for external mastic?
Yes, Thanington is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area.
Are you insured?
Yes. We are fully insured, and we’ve been doing sealant work for more than 20 years.
How long should I leave it?
It depends on the product and the conditions. Before we leave, we will tell you the cure time.
Is there a guarantee?
Yes, always. Each job is guaranteed for twelve months, large or small.
Can I do it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
External mastic in Thanington, done properly
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. If you have gaps where render, brick and frames meet and weeds or debris growing in open joints, we can help, whatever the surface.
Outbuildings, garages and conservatories around homes in places like Thanington add more joints to look after. Leaks generally start at a gutter end, a garage door frame or where an extension meets the house.
There’s a 12-month guarantee on every job, whatever its size.

- Location
- Thanington (CT1, CT2)
- Region
- Kent
- Guarantee
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
When it is not the sealant
Before you book, it’s worth knowing the limits:
- Adding movement joints to masonry that has none
- Damp that isn’t coming from the joint
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly.
Where we work in Thanington
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
- Concrete & block
- Façade panels
- Render & cladding joints
What external mastic looks like in Thanington
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Managing a site like The Canterbury Primary School? Then its movement joints, gutters and trims need looking after like any other building’s. If you let a flat or house near Canterbury East station, split movement joints are easy to miss on a rental until damp shows inside. In the older streets around Church of St Nicholas, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Thanington is about 1 mile south-west of Wincheap, in Kent. If you need external mastic in Thanington, please phone 0345 464 0079 or drop us an email for a quick quote. We’re based in Crawley and cover Kent. Thanington is one of 922 places in Kent we cover for external mastic. Our Chelmsford page covers work nearby.
All of CT1 and CT2 is covered for external mastic. Streets in the area include Godwin Road, Bell Avenue and Ashford Road, all of which we cover. Other places close to Thanington include Wincheap (1 mile north-east), Stuppington (1 mile south-east), Harbledown (1 mile north), Canterbury (1 mile north-east) and Upper Harbledown (1 mile north-west). We also work in nearby towns such as Ashford (12 miles south-west), Dover (14 miles south-east), Sittingbourne (15 miles west), Folkestone (14 miles south), Whitstable (6 miles north) and Deal (15 miles east).
Landmarks near Thanington
Around Thanington, our work takes us to homes and buildings near The Canterbury Academy, Duke's Head Public House and Whitehall Meadows. Thanington’s nearest station is Canterbury East station, roughly 1 mile north-east. Well-known places in the area include Whitefriars Shopping Centre (1.2 miles north-east) and Canterbury Castle (1 mile north-east). For a walk, there’s Blean Woods RSPB Reserve.
Work for landlords, hotels and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What we do, step by step
Once we are on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours to a few days, depending on the length of joint and the access. For a job in Thanington, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- Clear the area around the work
- Let us know about stairs, lifts or work at height
- Tell us about any previous sealing or DIY attempts
Getting a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work before giving you a price.
Advice
What the job involves on each surface
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so its sealant has to stay flexible.
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so neither cracks the other.
Also near Thanington
Also in Thanington
What affects the cost of external mastic
Every job gets its own quote. This is what makes a difference:
- Which sealant suits the joint
- When we can work, for business premises
- How easy the joints are to reach
- Whether there’s mould to deal with
The cost depends on how much there is to do, how hard the old material is to remove and access to the work. We give a clear quote before we start, so you know where you stand.
Asking for a quote
Before you ask for a quote, have a think about:
- Where the property is
- Any access issues, like height or stairs
- Any previous sealing or DIY work
- Roughly how big the job is
We quote each job on its own. Just phone 0345 464 0079 or send us an email with the details and send pictures if you have them.
Why deal with it now?
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together and it means sorting access once. In a smaller place like Thanington, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you’re not sure whether it needs doing, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Why us?
- Quality sealants from Arbo and Everbuild
- We agree the colour with you first
- Any old sealant cut out fully, not covered over
- An ARBOMaster approved applicator
Take a look at what affects the cost or our reviews.
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep water from gutters off the wall
- Tell anyone working on the walls about the movement joints
- Get split or bare joints resealed while the damage is small
- Check external joints each spring
Only paint over the joint if we’ve confirmed the sealant can take paint. Paint can crack on a flexible joint and spoil the finish.
Once a joint can’t move, the wall finds another way, usually as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
