Hampshire · England
External Mastic in Smannell
External mastic for Smannell, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Weathered mastic that no longer stretches
- Failed seals between different materials
- Leaking joints around cladding and façade panels
External mastic for homes and businesses in Smannell
Getting the depth right is half the job. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, leaving it bonded to two faces so it can move with the wall. If you are dealing with joints with sealant missing in places and joints pointed up with cement by mistake, we can put it right.
Older homes in small places like Smannell may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in.
Our work is backed for twelve months, in Smannell and everywhere else we cover.
- Where
- Smannell (SP11)
- Region
- Hampshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Smannell questions
Will you come out to Smannell?
Yes, we do. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you help a landlord with a rental near Andover station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can call 0345 464 0079 or email us with the details for a clear quote.
Should I point up the gap in my brickwork?
No, not if it’s a movement joint. Filling it with mortar defeats its purpose, and the wall may crack nearby. A flexible sealant is the right fill.
Do I have to be there?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint.
How long does external mastic take?
As a guide, most jobs take a few hours for a handful of joints, longer for a whole elevation. Bigger jobs take longer.
Is the work guaranteed?
Yes. There’s a 12-month guarantee on every job, large or small.
Places near Smannell
More services for Smannell
For landlords and businesses
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
We work for letting agents and landlords as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Aftercare tips
Aftercare is simple, and it makes a real difference:
- Keep high-pressure jets off the joints
- Do not let climbing plants root in the sealant
- Keep movement joints as flexible joints, not mortar
- Get split or bare joints resealed while the damage is small
Give the sealant the cure time we tell you before anything rubs against it. The surface skins over quickly, but full cure takes longer.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
Walls and rooflines in Smannell
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near Christ Church, older walls, gutters and the joints where extensions meet them need a flexible sealant. If you let a flat or house near Andover station, split movement joints are easy to miss on a rental until damp shows inside. If you look after a building such as Smannell and Enham Church of England (Aided) Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Smannell is about 2 miles north-east of Andover, in Hampshire. We carry out external mastic for householders, landlords and businesses in Smannell and the surrounding area, as part of our work across Hampshire. Smannell is one of 683 towns and villages in Hampshire where we work. You can also see our page for Southampton, roughly 22 miles from Smannell.
Postcode districts we cover here for external mastic: SP11. We cover properties on Stoke Road and Smannell Road. We also cover Little London (1 mile north), Finkley (1 mile south-east), Enham Alamein (1 mile west), Upper Enham (1 mile north-west) and East Anton (1 mile south-west). Within a short drive, we also cover Basingstoke (15 miles east), Winchester (14 miles south-east), Hyde (13 miles south-east), Tidworth (9 miles west), Weeke (13 miles south-east) and Kempshott (14 miles east).
Local landmarks in Smannell
In Smannell, that means homes and buildings near Winton Community Academy and The Oak pub. The closest station to Smannell is Andover station, roughly 2.5 miles south-west of the centre. Other landmarks nearby include Finkley Down Farm Museum (1.2 miles south) and Andover War Memorial Hospital (2.4 miles south-west). Green spaces nearby include Anton Lakes and Mill Lake.
Why act early in Smannell
Water gets in through a failed movement joint. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Older cottages and farmhouses around Smannell can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, call 0345 464 0079 or email us for an honest opinion and a quote.
Why Smannell clients choose us
- Rated 4.9 stars on Google
- Fully insured
- Sealant colour chosen to suit
- White, clear, grey or another colour, product permitting
Quotes for external mastic in Smannell
The price is agreed before any work begins. It takes into account:
- Mould in or behind the old joints
- The size of the job
- Whether the work is at height
- Whether old sealant or filler has to be cut out
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
What to tell us when you ask for a quote:
- What’s wrong with the joints now
- Whether it has been sealed before
- How we’d reach the joints
- The address or postcode of the job
For external mastic in Smannell, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before work begins.
What we do, step by step
We work through the job in order: protect, prepare, seal, tidy. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Smannell, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- 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
- Clear items away from the joints we’re working on
- For business premises, tell us about site rules or sign-in
- Mention any tricky access
Ask for a quote
We quote each job on its own. Simply call 0345 464 0079 or send us an email and describe the job and send pictures if you have them.
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How the job changes by surface
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind and protects the render itself.
Brickwork movement joints
Brick walls have vertical movement joints to absorb expansion. They’re resealed over backing rod with a low-modulus sealant coloured to suit the wall.
What we cannot put right
Sealant is not the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- Walls that need new movement joints cut into them
- Rising or penetrating damp from elsewhere in the wall
- Failed render or damaged cladding panels
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Façade panels
- Copings & trims
- Concrete & block
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames