Medway · England
External Mastic in Rochester Riverside
Problem with your movement joints in Rochester Riverside? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Moss and dirt in joints with no sealant left
- Sealant pulling away from one side of the joint
- Panel joints letting water in
How we handle external mastic in Rochester Riverside
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall so the joint doesn’t stand out. We work on façade panels, brickwork movement joints and copings & trims, and people most often call us about joints with sealant missing in places and plants rooting in failed movement joints.
In and around Rochester Riverside, older properties sit alongside newer ones, each with its own outside joints. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
Your job is guaranteed for a year, as with all our work.
- Place
- Rochester Riverside (ME1, ME2, ME3)
- Wider area
- Medway
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of external mastic
The price is agreed before any work begins. It takes into account:
- Whether the work is at height
- Mould in or behind the old joints
- How much old sealant there is and how hard it is to remove
- The amount of work
Doing several joints on one visit is usually more efficient than separate visits. We’ll give you a clear price for the lot.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- If it’s domestic, commercial or a hotel
- Where the job is, and your postcode
- Whether it has been sealed before
- Pictures of the joints, sent by email
Every job is quoted individually, so the first step is telling us about yours. Just ring 0345 464 0079 or send us an email with the details and send photos if you have them.
Walls and rooflines in Rochester Riverside
Rochester Riverside is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. With historic houses such as Restoration House (about 0.3 miles south-west) nearby, there’s older building stock in the area around Rochester Riverside as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
If you live in an older home near Church of St Nicholas, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you let a flat or house near Rochester station, outside joints that have cracked can let damp into a rental, so check them between lets. Managing a site like Rochester Riverside Church of England Primary School? Then its movement joints, gutters and trims need looking after like any other building’s.
Rochester Riverside is about 1 mile east of Rochester, in Medway. Across the ME1 area, our applicators can take on external mastic. Our Medway coverage runs to 68 places, and Rochester Riverside is one of them. Our Chelmsford page covers work nearby (24 miles or so).
Our applicators cover all of ME1, ME2 and ME3 for external mastic and the streets around it. Whether your property is on Crow Lane, Love Lane and Corys Road or anywhere close by, we can help. We also cover Frindsbury (1 mile north), Chatham Waterfront (1 mile south-east), Brompton (1 mile east), Luton (2 miles south-east) and Chatham (3 miles south-east). Larger places within reach include Gillingham (3 miles south-east), Rainham (5 miles south-east), Park Wood (5 miles south-east), Lordswood (4 miles south-east), Twydall (4 miles east) and Hoo St Werburgh (3 miles north-east).
Landmarks near Rochester Riverside
Around Rochester Riverside, our work takes us to homes and buildings near St Michael the Archangel Church, Former Ordnance Store At Chatham Gun Wharf and St John Fisher RC Comprehensive School and the streets around them. Nearby too are Fort Pitt Grammar School (0.7 miles south-east), The Eagle Tavern (under half a mile south-west) and The Paddock (0.8 miles south-east). Rochester Riverside has its own railway station: Rochester station. Other landmarks nearby include Huguenot Museum (under half a mile west) and French Hospital (under half a mile south-west). The countryside around Rochester Riverside includes Gad's Hill and Rede Common.
What happens if it’s left?
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. In an older home around Rochester Riverside, damp from a failed joint can get into timber and plaster, and that is a much bigger job than renewing the sealant.
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or email us and we’ll talk you through it.
Why Rochester Riverside clients choose us
- Colour picked to suit the job
- Over 20 years’ experience
- You choose the colour before work begins
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at what affects the cost or customer reviews.
What we can’t put right
New sealant can’t fix everything, and we’ll tell you before we start. Sealant won’t put right:
- Cracks in the bricks or render themselves, away from the joints
- Movement that is more than a sealant joint can take
- Rising or penetrating damp from elsewhere in the wall
If in doubt, call 0345 464 0079 or send us an email and we will say what we think.
Joints and surfaces we work on
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
- Copings & trims
- Façade panels
- Brickwork movement joints
Common questions in Rochester Riverside
Do you cover smaller places like Rochester Riverside?
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.
Can you help a landlord with a rental near Rochester station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
What is a movement joint?
Brickwork, render and cladding all move a little, so long walls have planned gaps to take that movement. It’s closed with backing rod and a flexible sealant.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Is there a guarantee?
Yes. All our work carries a 12-month guarantee.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you when we finish.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How much does external mastic cost in Rochester Riverside?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access and we leave things clean and tidy. In a smaller place like Rochester Riverside, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Mention if the joints have been sealed before
- Tell us about any water getting in
Ask for a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Read more
Should I try it myself first?
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.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
What the job involves on each surface
Cladding and façade panels
Panel systems often rely on sealant between and around the panels. Each joint gets a sealant that suits the panel and its movement.
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. A primer goes on where the product requires one before the bead.
Nearby places to Rochester Riverside
Other services in Rochester Riverside
Landlords, agents and businesses in Rochester Riverside
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.