Southampton · England
External Mastic in Townhill Park
External mastic across Townhill Park and nearby, with old sealant always removed completely and a 12-month guarantee.
- Cracked joints where brick meets render or frames
- Brick movement joints where the sealant has split
- Moss and dirt in joints with no sealant left
External mastic in Townhill Park, done properly
For buildings in Townhill Park, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you have plants rooting in failed movement joints and water getting into walls through failed joints, we can help, whatever the surface.
In and around Townhill Park, 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.
Whatever the size of the job, you get the same one-year guarantee in Townhill Park and across Southampton.
- Place
- Townhill Park (SO18, SO30)
- Wider area
- Southampton
- Cover
- A year, on every job
- Quotes
- A clear price before we start
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
Places near Townhill Park
Other services in Townhill Park
Why act early in Townhill Park
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 Townhill Park, damp from a failed joint can get into timber and plaster, which is far harder to put right than the sealant itself.
Leaving a failed joint usually makes the job bigger, not smaller. If you are unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Why choose Mr Mastic in Townhill Park
- White, clear, grey or another colour, product permitting
- Arbo and Everbuild products
- Experience in homes, commercial sites and hotels
- 20+ years of sealant experience
Read our cost guide and our reviews.
Landlord and commercial work in Townhill Park
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
We work for landlords and letting agents as well as homeowners. Resealing between tenancies keeps a property looking cared for.
How we quote for external mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
- Access and height
- The number and length of the joints
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
What to tell us for a quote
When you call or email, it’s useful to know:
- Any previous sealing or DIY work
- A few photos by email, if you can
- The address or postcode of the job
- The rough size of the job
Asking for a quote is easy: let us know what needs doing and where and its rough size. A few photos by email make the job easier to understand, and we will come back to you with a quote.
External mastic in Townhill Park: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as South Stoneham House (about 0.9 miles north-west) nearby, there’s older building stock in the area around Townhill Park as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
For landlords with property near Swaythling station, outside joints that have cracked can let damp into a rental, so check them between lets. If you look after a building such as Townhill Junior School, larger buildings have long runs of movement joint that eventually need resealing.
Townhill Park is about 2 miles north-east of Southampton, in Southampton. Anywhere in SO18, we can carry out external mastic at your property. Across Southampton, we cover 40 places, and Townhill Park is one of them.
Here we cover the SO18 and SO30 postcode area for external mastic. We cover properties on Ivy Lane, Avon Road and Dell Road. With the A27 close by, Townhill Park is simple for us to get to. Nearby, we also carry out external mastic in Chartwell Green (1 mile east), Midanbury (1 mile south-west), Mansbridge (1 mile north-west), Bitterne Park (1 mile south-west) and West End (1 mile east). Within a short drive, we also cover Shirley (3 miles west), Regents Park (4 miles west), Maybush (4 miles west), Woolston (3 miles south), Coxford (4 miles west) and Freemantle (3 miles south-west). As one of the bigger places in Southampton, Townhill Park has every kind of property, from flats to offices.
Landmarks near Townhill Park
Locally, jobs take us to homes and businesses close to The Gregg School, Riverside Park and Bitterne Park School and the streets around them. Townhill Park’s nearest station is Swaythling station, about 1.1 miles north-west of the centre. Nearby you will also find Marlands Shopping Centre (2.7 miles south-west) and Bitterne Local History Society Heritage And Research Centre (1.2 miles south). Green spaces nearby include Netley Common.
How it works
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the work takes a few hours for a handful of joints, longer for a whole elevation in most cases. A visit to Townhill Park is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Keep children and pets away from the work area
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
Get a quote
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or email us.
Advice
Common problems we fix in Townhill Park
If plants are growing out of a joint, the sealant has normally failed or was never there. Roots and dirt hold water against the wall.
These are the problems we are asked about most:
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Plants rooting in failed movement joints
- Water getting into walls through failed joints
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.
Questions to ask before booking
- Who turns up on the day
- How hidden problems are handled
- Whether they seal over old material or remove it
- How long the guarantee is
Common questions in Townhill Park
Is Townhill Park within the area you cover?
Yes. Townhill Park is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Swaythling station. Can you help?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can go on one quote. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we will send you a clear quote.
Do you work at height?
It depends on the building. Tell us the height, the number of joints and what’s below them and we will confirm how they can be reached safely.
Can a movement joint be filled with mortar?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose, and the wall may crack nearby. We’ll reseal it with a flexible sealant.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What does external mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Are you fully insured?
Yes. We’re fully insured, and we can confirm the details when we quote.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
Honest limits
To be straight with you, some problems need a different trade:
- Cracks in the bricks or render themselves, away from the joints
- Walls that need new movement joints cut into them
- Damp that is not coming from the joint
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly before you book.
What we seal
- Copings & trims
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Façade panels
- Joints between brick and frames