Kent · England
Lower Cox Street External Mastic
Specialist external mastic for Lower Cox Street: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Joints with sealant missing in places
- Movement joints filled with mortar instead of sealant
- Plants rooting in failed movement joints
When to call us in Lower Cox Street
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. The joint cannot move, so the wall cracks somewhere else instead.
Most people get in touch when they notice one of these:
- Plants rooting in failed movement joints
- Rigid filler in a joint that should flex
- Damp patches traced to an open external joint
- Hard, crazed mastic that has stopped moving
For an older house near a landmark such as Church of St Peter, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Comparing quotes
- What the cure time is
- Whether they’re fully insured
- Whether they seal over old material or remove it
- Whether the sealant suits the joint
External mastic in Lower Cox Street, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two. If you have rain getting behind render or cladding at a joint and movement joints with cracked, split or missing sealant, we can help.
External sealant needs dry, clean surfaces, so work around Lower Cox Street is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
Your job is guaranteed for a year, as with all our work.
- Where
- Lower Cox Street (ME14)
- Wider area
- Kent
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Places near Lower Cox Street
Other services in Lower Cox Street
Landlord and commercial work in Lower Cox Street
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will quote.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
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 process
The work is kept neat and contained to the area we’re working on. Expect the work to take a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. Somewhere as small as Lower Cox Street, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- Tell us about any previous sealing or DIY attempts
Getting a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Advice
Aftercare tips
Joint life depends on how it’s used and looked after. We suggest:
- Deal with leaking gutters that soak the joints below
- Leave the joints unpainted unless we have said otherwise
- Clear growth from the base of walls and joints
- Have failed joints looked at early
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Gaps, plants or missing sealant in a joint are worth getting looked at. Early work is quicker and leaves a better finish.
What affects the quote in Lower Cox Street
Every job gets its own quote. These are the things that affect it:
- Mould in or behind the old joints
- The type of sealant required
- The size of the job
- How many rooms, windows or areas are involved
Doing several joints on one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
Asking for a quote
When you contact us, it’s useful to know:
- Photos by email, if that is easy
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
If you’re in Lower Cox Street and need external mastic, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we will agree the price before any work begins.
What external mastic looks like in Lower Cox Street
Historic houses like Stoneacre (about 4.6 miles south) are a reminder that the area around Lower Cox Street has older buildings as well as new. In older buildings, 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For landlords with property near Bearsted station, split movement joints are easy to miss on a rental until damp shows inside.
Lower Cox Street is about 4 miles south of Gillingham, in Kent. For external mastic in and around Lower Cox Street, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We’re based in Crawley and cover Kent. Our area takes in 922 places across Kent, from the larger towns to small villages. We also work in Chelmsford, around 29 miles away.
Here we cover the ME14 postcode area for external mastic. Close by, we work in Scragged Oak (1 mile north-west), Kemsley Street (1 mile north-west), Bredhurst (1 mile north-west), Dunn Street (1 mile north-west) and Lidsing (2 miles north-west). Larger places within reach include Maidstone (5 miles south-west), Sittingbourne (6 miles east), Gravesend (12 miles north-west), Faversham (13 miles east), Northfleet (13 miles north-west) and Minster (11 miles north-east).
Near you in Lower Cox Street
Around Lower Cox Street, our work takes us to homes and buildings near White Horse Wood, among other places. The closest station to Lower Cox Street is Bearsted station, roughly 3.1 miles south of the centre. Well-known places in the area include Allington Castle (4.1 miles south-west) and KIMS hospital (2.8 miles south-west). Green spaces nearby include Burham Down and Detling Hill.
When something else is needed
A few problems are outside what sealant work can do:
- Render that is blown, hollow or coming away
- Cracking across the wall rather than at a joint
- Damp that isn’t coming from the joint
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before booking.
Surfaces we seal
- Brickwork movement joints
- Façade panels
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
FAQs for Lower Cox Street
Do you cover Lower Cox Street for external mastic?
Yes, Lower Cox Street is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job.
Do you cover smaller places like Lower Cox Street?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Will it make a mess?
No. We work neatly, protect the area around the joints and tidy up afterwards.
Can you reach joints on upper floors?
That depends on the building and the joints. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Lower Cox Street, along with the rest of our area.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses and we’re fully insured.
When is the sealant fully cured?
It depends on the product. We tell you how long to leave it before we go.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.