Medway · England
External & façade joints in Burham, Medway
External mastic across Burham and nearby, with every bit of old sealant taken out first.
- Weeds or debris growing in open joints
- Old sealant gone brittle and cracked
- Sealant pulling away from one side of the joint
When something else is needed
In fairness, some problems need a different trade:
- Loose or hollow render, which needs re-rendering
- Structural movement, which needs a surveyor or engineer
- Walls that need new movement joints cut into them
If in doubt, call 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Façade panels
External mastic for homes and businesses in Burham
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. We work on render & cladding joints, joints between brick and frames and copings & trims, and people most often call us about water getting into walls through failed joints and failed sealant between panels on a façade.
External sealant needs dry, clean surfaces, so work around Burham is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
There’s a 12-month guarantee on every job.
- Where
- Burham (ME1)
- Region
- Medway
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Different surfaces, different methods
Copings and trims
Copings expand and contract through the day, so the joints need a sealant that stays flexible year round.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant in a colour to suit the brick.
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
External mastic in Burham: local notes
Historic houses like Starkey Castle (about 2.4 miles north) are a reminder that the area around Burham has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. 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.
For an older house near a landmark such as St Mary's Church, an extension built onto an older house moves differently, and the joint between them takes the strain. If you look after a building such as Burham Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing. Letting a property close to Snodland station? Then outside joints that have cracked can let damp into a rental, so check them between lets.
Burham is about 3 miles south-west of Chatham, in Medway. If you need external mastic in Burham, it’s easy to get a quote: please call 0345 464 0079 or send us an email. We cover Medway from our Crawley base, Burham included. Across Medway, we cover 68 places, Burham among them. There’s also a page for London, about 27 miles away.
Our applicators cover all of the ME1 postcode area for external mastic. If you need external mastic at a property on New Road, St Mary's Walk and Brisley's Row or anywhere close by, we can help. Other places close to Burham include Scarborough (1 mile north-west), Eccles (1 mile south), Peters Village (1 mile north-west), Holborough (2 miles west) and Wouldham (2 miles north-west). Larger places within reach include Gillingham (5 miles north-east), Chatham (3 miles north-east), Rochester (4 miles north), Rainham (6 miles east), Strood (4 miles north) and Luton (4 miles north-east).
Near you in Burham
Typical jobs here are in homes near The Windmill pub, The Holmesdale School and Burham Marsh and the streets around them. The closest station to Burham is Snodland station, about 1.3 miles west. Nearby you’ll also find St. Catherine's Hospital (3.8 miles north) and Medway megaliths (1.3 miles south-east). Open spaces near Burham include Burham Down and Blue Bell Hill.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Keep high-pressure jets off the joints
- Get split or bare joints resealed while the damage is small
- Make sure movement joints aren’t pointed over
- Fix overflowing gutters above sealed joints
Only paint over the joint if we’ve confirmed the sealant can take paint. Paint can crack on a flexible joint.
Once a joint can’t move, the wall finds another way, normally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Nearby places to Burham
Also in Burham
How the visit works
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours to a few days, depending on the length of joint and the access, depending on the size of the job. In a small place like Burham, 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 checking each joint, agreeing the ones to redo and how we will reach them.
- 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
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
- Mention if the joints have been sealed before
Ask for a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints.
Related advice
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, so it pays to do it properly once. Older cottages and farmhouses around Burham can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why Burham clients choose us
- More than 20 years in sealant work
- We’re fully insured
- 4.9 on Google from 180+ five-star reviews
- Sanitary silicone with an anti-fungal additive in wet areas
Read how sealant jobs are priced or our reviews.
Your questions about external mastic in Burham
Is Burham in your area for external mastic?
Yes. We work across London and the South East, and Burham is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
Do you cover smaller places like Burham?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What’s an expansion joint in brickwork?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
Do you take out the old sealant first?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses and we are fully insured.
What does external mastic cost?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Where do you work from?
We’re a Crawley-based firm, with over 20 years’ experience. We work across South East England, London and Scotland.