Medway · England
Lower Twydall External Mastic
Movement joints in Lower Twydall need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Rain getting behind render or cladding at a joint
- Plants rooting in failed movement joints
- Weathered mastic that no longer stretches
How we handle external mastic in Lower Twydall
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 so the joint doesn’t stand out. If you are dealing with failed sealant between panels on a façade and moss and dirt in joints with no sealant left, we can help, on concrete & block, joints between brick and frames and brickwork movement joints alike.
Older homes in small places like Lower Twydall may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Lower Twydall (ME7)
- Wider area
- Medway
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
External mastic in Lower Twydall: local notes
Lower Twydall is within about 1 mile of 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. With historic houses such as Restoration House (about 3.7 miles west) nearby, there’s older building stock in the area around Lower Twydall as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
If you look after a building such as Featherby Infant and Nursery School, larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Rainham (Kent) station, outside joints that have cracked can let damp into a rental, so check them between lets.
Lower Twydall is about 1 mile north-east of Gillingham, in Medway. Homes, rented property, offices and hotels in Lower Twydall is covered for external mastic, old or new, large or small. The work is guaranteed for a year. We cover 68 towns and villages across Medway. There’s also a page for Chelmsford, about 25 miles away.
Here we cover the ME7 postcode area for external mastic. Whether your property is on Lower Twydall Lane, Grange Road and Lower Rainham Road or anywhere close by, our applicators can take on the job. Nearby, we also carry out external mastic in Grange (1 mile north-west), Twydall (1 mile south), Gillingham (1 mile south-west), Wigmore (2 miles south) and Darland (2 miles south-west). Further out, we also cover Chatham (3 miles south-west), Rochester (4 miles west), Strood (5 miles west), Park Wood (3 miles south), Lordswood (4 miles south-west) and Hoo St Werburgh (3 miles north-west).
Around Lower Twydall
We work in homes and buildings around The Robert Napier School, Rainham Mark Grammar School and Riverside Country Park, among other places. The closest station to Lower Twydall is Rainham (Kent) station, about 1.5 miles south-east of the centre. A little further out are Medway Maritime Hospital (2.1 miles west) and Upnor Castle (3.2 miles north-west). Green spaces nearby include Bishop Saltings.
Honest limits
A few problems are outside what sealant work can do:
- Render that’s blown, hollow or coming away
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Walls that need new movement joints cut into them
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before you book.
What we seal
- Copings & trims
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Render & cladding joints
- Façade panels
Work for landlords, hotels and businesses
For anyone letting property in or around Lower Twydall, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
What we’re called out for in Lower Twydall
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it can’t stretch and rips as the joint opens.
The problems people generally mention when they call include:
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
- Movement joints filled with mortar instead of sealant
- Cracked joints where brick meets render or frames
In the older streets around Holy Trinity Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What your quote should include
- Are they insured?
- Whether VAT is included
- How the surfaces are prepared before sealing
- How much experience the applicator has
What happens on the day
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 anything from a few hours to several days, depending on the building. Somewhere as small as Lower Twydall, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs 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
- Mention any tricky access
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
Ask for a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Advice
What happens if it’s left?
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together and it means sorting access once. Around Lower Twydall, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
The cost depends on how much there is to do, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before work begins.
Why choose Mr Mastic in Lower Twydall
- Colour agreed with you before we start
- A 12-month guarantee on all work
- We’re fully insured
- More than 20 years in sealant work
See our cost guide or what customers say.
What affects the quote in Lower Twydall
There’s no set price list, because jobs vary so much. The quote depends on:
- The size of the job
- Whether there’s mould to deal with
- Working hours on commercial sites
- The product the joint needs
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or send us an email.
What to tell us for a quote
To make quoting easier, please include:
- What the problem is, such as mould, gaps, leaks or cracking
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- A few pictures by email, if you can
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.
Common questions in Lower Twydall
Does living near the coast affect external mastic in Lower Twydall?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
I let a flat near Rainham (Kent) station. Can you help?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Can you work on commercial sites?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Do you cover Lower Twydall?
Yes. We are based in Crawley and work across South East England, London and Scotland.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator.
Will you leave a mess?
Tidy work is part of the job. We protect what’s around the joints.
Also in Lower Twydall
Keeping the joints in good condition
After the cure time, these simple habits help:
- Avoid pressure-washing directly into sealant joints
- Don’t let climbing plants root in the sealant
- Ask before painting over external sealant
- Keep movement joints as flexible joints, not mortar
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Small splits are the time to act. Then it’s a straightforward cut-out and reseal before water has had years to get in.