Kent · England
External & façade joints in Cooper Street, Kent
Sealing brickwork movement joints, render, cladding and façade joints in Cooper Street, with a 12-month guarantee on every job. Ask us for a quote.
- Joints where the bead has come unstuck
- Water getting into walls through failed joints
- Joints pointed up with cement by mistake
About our external mastic in Cooper Street
For buildings in Cooper Street, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean joint faces and the right depth. Common call-outs are for joints with sealant missing in places and old sealant gone brittle and cracked, on joints between brick and frames, brickwork movement joints and concrete & block.
Older homes in small places like Cooper Street may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Cooper Street (CT3)
- Wider area
- Kent
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
If you manage several properties in or around Cooper Street, several properties can go on one quote. Send us the addresses and the work at each.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we’re fully insured for the work.
Cooper Street: your questions answered
Can you help a landlord with a rental near Sandwich station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Can you do external mastic in Cooper Street?
Yes, Cooper Street is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
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.
Is the work guaranteed?
Yes: twelve months. If there’s a problem with our work in that time, tell us and we’ll put it right.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
How long should I leave it?
Cure times vary by product and the conditions. Before we leave, we’ll tell you the cure time.
What colours does the sealant come in?
We aim for a joint that suits the wall rather than one that jumps out. We will talk through colour options before work begins, matched as closely as the range allows.
When something else is needed
We will always be straight with you, so here’s what sealant cannot fix:
- Render that’s blown, hollow or coming away
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Façade panels
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
What we do, step by step
Before we leave, we go over the finished joints with you. The visit itself generally takes a few hours for a handful of joints, longer for a whole elevation, depending on how much there is to do. In a small place like Cooper Street, access is normally the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
Get a quote
For external mastic in Cooper Street, call 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before we start.
Read more
Why deal with it now?
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. Around Cooper Street, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Cooper Street
- A choice of colours where the product allows
- Colour picked to suit the job
- Sanitary silicone with an anti-fungal additive in wet areas
- Neat joints and a tidy finish
Read our cost guide and customer reviews.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Avoid pressure-washing directly into sealant joints
- Deal with leaking gutters that soak the joints below
- Check the sealant is paintable before painting near it
- Tell anyone working on the walls about the movement joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
Water getting behind cladding or render can go unnoticed for a long time. By the time there’s a damp patch, the damage can be well established.
Walls and rooflines in Cooper Street
Historic houses like Goodnestone Park (about 4.8 miles south-west) are a reminder that the area around Cooper Street has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. 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.
Schools such as Sir Roger Manwood's School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Letting a property close to Sandwich station? Then split movement joints are easy to miss on a rental until damp shows inside. Historic houses such as Goodnestone Park, about 4.8 miles south-west, show how far back building around Cooper Street goes, and older homes nearby need a sealant that suits their walls.
Cooper Street is about 6 miles south-west of Ramsgate, in Kent. We carry out external mastic for homes and businesses in Cooper Street and the surrounding area. Across Kent, we cover 922 places, Cooper Street among them. There’s also a page for Chelmsford, about 47 miles away.
Here we cover the CT3 postcode area for external mastic. Neighbouring places we cover for external mastic include East Street (1 mile south), Great Stonar (2 miles east), Marshborough (2 miles south), Sandwich (2 miles south-east) and Woodnesborough (2 miles south). Larger places within reach include Canterbury (10 miles west), Margate (7 miles north-east), Dover (11 miles south), Ramsgate (6 miles north-east), Broadstairs (7 miles north-east) and Whitstable (13 miles west).
Landmarks near Cooper Street
The closest station to Cooper Street is Sandwich station, roughly 2.2 miles south-east. Other landmarks nearby include White Mill (1.3 miles south-east) and Ramsgate General Hospital (5.2 miles north-east). Open spaces near Cooper Street include Monk's Wall nature reserve.
What the job involves on each surface
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so neither cracks the other.