Medway · England
Lower Rainham External Mastic
We cover Lower Rainham for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Failed sealant between panels on a façade
- Movement joints filled with mortar instead of sealant
- Sealant that has lost its bond to the brick or render
External mastic in Lower Rainham
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. The colour is chosen to suit the brick or render so the line blends in. Typical jobs include joints where the bead has come unstuck and weathered mastic that no longer stretches, across brickwork movement joints, joints between brick and frames and copings & trims.
In a village or hamlet like Lower Rainham, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
The work is covered for a year after we finish. If anything is not right with it, ring 0345 464 0079 or send us an email.
- Location
- Lower Rainham (ME8)
- Region
- Medway
- Cover
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Common problems we fix in Lower Rainham
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint.
If you can see any of these, it’s time to have the joints looked at:
- Rain getting behind render or cladding at a joint
- Moss and dirt in joints with no sealant left
- Leaking joints around cladding and façade panels
- Rigid filler in a joint that should flex
For an older house near a landmark such as Church of St Margaret, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Questions to ask before you book
- How long to leave it before use
- How much experience the applicator has
- What the quote includes, VAT included or not
- The length of the guarantee
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Look over the joints every year, ideally after winter
- Make sure movement joints aren’t pointed over
- Leave the joints unpainted unless we have said otherwise
- Clear growth from the base of walls and joints
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Walls and rooflines in Lower Rainham
Lower Rainham is within about 1 mile 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. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you let a flat or house near Rainham (Kent) station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. Managing a site like Thames View Primary School? Then its movement joints, gutters and trims need looking after like any other building’s.
Lower Rainham is about 2 miles east of Gillingham, in Medway. Our applicators cover external mastic for homes and businesses in Lower Rainham, as part of our work across Medway. We cover 68 towns and villages across Medway, from the larger towns to small villages. You can also see our page for Chelmsford, about 26 miles away.
Here we cover the ME8 postcode area for external mastic. If you need external mastic at a property on West Motney Way, Motney Hill Road and Nuthatch Place or anywhere close by, our applicators can take on the job. We also cover the places around Lower Rainham: Rainham (1 mile south), Moor Street (1 mile south-east), Upchurch (1 mile east), Meresborough (2 miles south) and Breach (2 miles south-east). Within a short drive, we also cover Chatham (4 miles west), Rochester (5 miles west), Strood (6 miles west), Luton (3 miles west), Lordswood (4 miles south-west) and Hoo St Werburgh (4 miles north-west).
Around Lower Rainham
Locally, jobs take us to homes and businesses close to The Three Mariners pub, Howard School and Berengrave Chalk Pit, among other places. Lower Rainham’s nearest station is Rainham (Kent) station, about 0.7 miles south of the centre. Well-known places in the area include Medway Maritime Hospital (3 miles west) and Upnor Castle (4.2 miles north-west). Open spaces near Lower Rainham include Bishop Saltings.
Lower Rainham: your questions answered
Is external mastic in a coastal place like Lower Rainham any different?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Will you come out to Lower Rainham?
Yes, Lower Rainham is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Where is Mr Mastic based?
We work from Crawley. We cover Lower Rainham and the rest of Medway.
How often do external joints need resealing?
It depends on the exposure, the movement and the product. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
How long should I leave it?
It depends on the product. We tell you how long to leave it before we go.
Is the work guaranteed?
Yes, for a year. If there’s a problem with our work in that time, tell us and we will put it right.
Why deal with it now?
A properly done movement joint is an even line in a colour 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 Lower Rainham can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
What you get with us
- Anti-fungal silicone where joints get wet
- Over 20 years’ experience
- We agree the colour with you first
- Domestic, commercial and hotel work
Read what affects the cost and our reviews.
Nearby places to Lower Rainham
Also in Lower Rainham
Honest limits
Sealant isn’t the answer to every problem, and we will tell you before work begins. Sealant won’t put right:
- Failed render or damaged cladding panels
- Subsidence or other structural problems
- Damp that is not coming from the joint
If in doubt, ring 0345 464 0079 or email us and we will say what we think.
Joints and surfaces we work on
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Brickwork movement joints
- Façade panels
Landlord and commercial work in Lower Rainham
Housing providers, facilities teams and property managers book us too in Lower Rainham and across Medway. We can quote a run of properties together, and we are fully insured for the work.
For anyone letting property in or around Lower Rainham, jobs at different addresses can be quoted together. Send us the addresses and the work at each.
What happens on the day
Every visit runs the same way: we check the joints, protect the area around them, do the work and tidy away. Most jobs take a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Lower Rainham, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
How to prepare
- Tell us about any previous sealing or DIY attempts
- For indoor joints, keep the area dry beforehand if you can
- Let us know about parking restrictions
Getting a quote
If you’re in Lower Rainham and need external mastic, ring 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
DIY sealant or a professional job?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.