Kent · England
External Mastic in Culmers
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Culmers. Fully insured, ARBOMaster approved and guaranteed for a year.
- Brick movement joints where the sealant has split
- Rigid filler in a joint that should flex
- Sealant pulling away from one side of the joint
About our external mastic in Culmers
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. The colour is chosen to suit the brick or render. If you have sealant that has lost its bond to the brick or render and panel joints letting water in, we can help.
Outside joints can only be sealed when they’re dry, so work in Culmers is booked around the forecast. 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.
- Location
- Culmers (ME13)
- Wider area
- Kent
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How the visit works
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a handful of joints, longer for a whole elevation. In a small place like Culmers, access is generally 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.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Try not to wet indoor joints just before the visit
- Let us know about earlier repairs to the joints
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
For a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
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Can I do it myself?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
External mastic in Culmers: local notes
Culmers is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Faversham station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you look after a building such as Graveney Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. If you live in an older home near Church of All Saints, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Culmers is about 2 miles east of Faversham, in Kent. Anywhere in ME13, we cover external mastic for homes and businesses. Culmers is one of 922 towns and villages in Kent where we work. Our Chelmsford page covers work nearby (35 miles or so).
Postcode districts we cover here for external mastic: ME13. Close by, we work in Graveney (1 mile north-east), Goodnestone (1 mile south-west), Broom Street (1 mile north-west), Slutshole (1 mile south-east) and Hernhill (1 mile south-east). Larger places within reach include Ashford (13 miles south), Canterbury (7 miles south-east), Sittingbourne (9 miles west), Whitstable (4 miles north-east), Herne Bay (9 miles east) and Minster (9 miles north-west).
Landmarks near Culmers
Typical jobs here are in homes near Queen Elizabeth's Grammar School and Mount Ephraim Gardens. Culmers’s nearest station is Faversham station, roughly 2.2 miles west. Other landmarks nearby include Whitstable and Tankerton Hospital (5.5 miles north-east). Not far away are Blean Woods RSPB Reserve.
When it isn’t the sealant
We’d rather tell you now than do work that won’t last, so these are the limits:
- Subsidence or other structural problems
- Rising or penetrating damp from elsewhere in the wall
- Failed render or damaged cladding panels
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Render & cladding joints
- Brickwork movement joints
- Copings & trims
- Façade panels
- Joints between brick and frames
- Concrete & block
Landlord and commercial work in Culmers
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.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
Quotes for external mastic in Culmers
Call for a quick quote. The main things that affect it are:
- How many areas need sealing
- Which sealant suits the joint
- Whether there’s mould to deal with
- Access and height
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, call 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
What we need to know
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
- Where the property is
- If someone has resealed it before
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Places near Culmers
More services for Culmers
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Keep movement joints as flexible joints, not mortar
- Avoid pressure-washing directly into sealant joints
- Tell anyone working on the walls about the movement joints
- Do not let climbing plants root in the sealant
Don’t paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint and spoil the finish.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Catch it early and you reduce the risk.
Different surfaces, different methods
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. We cut out the old sealant and reseal with a product suited to both surfaces.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. We size the backing rod to the gap so the sealant isn’t too deep.
Culmers: your questions answered
Is Culmers within the area you cover?
Yes. Culmers is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Faversham station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll give you a clear quote.
Can you reach joints on upper floors?
It depends on the building. Where joints can be reached safely, we’ll do them. Give us some details and we’ll confirm the access.
What does external mastic cost?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or send us an email with a short description of the job.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. Then ring 0345 464 0079 or send us an email.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Do you guarantee your work?
Yes, for a year. If anything is not right with the work within the year, let us know and we will sort it.