Hampshire · England
Thruxton External Mastic
External mastic across Thruxton and nearby, with old sealant always removed completely and a 12-month guarantee.
- Moss and dirt in joints with no sealant left
- Joints with sealant missing in places
- Rain getting behind render or cladding at a joint
How we handle external mastic in Thruxton
Movement joints let brickwork, render and cladding expand and shrink without cracking. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. We work on render & cladding joints, copings & trims and concrete & block, and the jobs we see most are plants rooting in failed movement joints and joints pointed up with cement by mistake.
In a village or hamlet like Thruxton, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
A one-year guarantee comes as standard.
- Location
- Thruxton (SP11)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
What we do, step by step
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes anything from a few hours to several days, depending on the building. Somewhere like Thruxton needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at every joint and agree a colour to suit the wall.
- 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.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- Where the joints are inside, avoid wetting them before we arrive
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
Getting a quote
For external mastic in Thruxton, ring 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
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Common problems we fix in Thruxton
Some movement joints have been pointed up with mortar, often by someone who didn’t know what it was for. The joint cannot move, so the wall cracks somewhere else instead.
People generally contact us when they notice something like this:
- Hard, crazed mastic that has stopped moving
- Plants rooting in failed movement joints
- Joints where the bead has come unstuck
- Rigid filler in a joint that should flex
For landlords with property near Grateley station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
What your quote should include
- How hidden problems are handled
- The length of the guarantee
- Which sealant they’ll use, and why
- When the joint can take water or movement
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Walk round the building once a year and look at the joints
- Fix overflowing gutters above sealed joints
- Keep movement joints as flexible joints, not mortar
- Check the sealant is paintable before painting near it
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage.
Outside joints around Thruxton
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.
If you look after a building such as Amport Church of England Primary School, larger buildings have long runs of movement joint that eventually need resealing. If you live in an older home near Church of St Peter and St Paul, an extension built onto an older house moves differently, and the joint between them takes the strain.
Thruxton is about 4 miles west of Andover, in Hampshire. If you need external mastic in Thruxton, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We’re based in Crawley and cover Hampshire. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. Our Southampton page covers work nearby, about 22 miles away.
Jobs for external mastic in SP11 is quoted and booked the same way as anywhere else. Whether your property is on Lambourne Way, Lambourne Close and Stanbury Close or anywhere close by, we can help. Close by, we work in Mullenspond (1 mile east), East Cholderton (1 mile south-east), Fyfield (1 mile north), Weyhill (1 mile north-east) and Appleshaw (2 miles north-east). Further out, we also cover Andover (4 miles east), Hyde (15 miles south-east), Tidworth (4 miles north-west), Weeke (14 miles south-east), Stanmore (15 miles south-east) and Ludgershall (3 miles north-west).
Near you in Thruxton
Around Thruxton, our work takes us to homes and buildings near The George Inn and the streets around them. For rail, the closest station is Grateley station, roughly 3.2 miles south-west. Well-known places in the area include Andover War Memorial Hospital (3.9 miles east) and Ludgershall Castle (3.8 miles north-west). Not far away are Anton Lakes and Quarley Hill.
Leave it or put it right?
Running new sealant over the old bead rarely lasts. New sealant doesn’t bond well to old, weathered sealant, so the old joint is cut out fully first. Older cottages and farmhouses around Thruxton can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Rather than a set price list, 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.
Why us?
- Rated 4.9 stars on Google
- Trusted Arbo and Everbuild sealants
- Anti-fungal sanitary silicone in wet areas
- Homes, businesses and hotels
See what affects the cost and customer reviews.
DIY sealant or a professional job?
A DIY attempt does not rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
How we quote for external mastic
We quote each job individually. This is what makes a difference:
- Which sealant suits the joint
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- How much there is to do
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we will go through it with you.
What to tell us for a quote
When you contact us, these details help:
- How many joints, rooms or windows are involved
- Where the property is
- The type of property
- The problem you’ve noticed
We don’t publish a price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or send us an email.
Thruxton questions
Will you come out to Thruxton?
Yes, Thruxton is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover Thruxton for external mastic?
Yes, Thruxton is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we will give you a clear quote.
Can I add another job to the visit?
Yes. Just list everything you need and we’ll quote it together.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
How long before the joint can be used?
Cure times vary by product and the temperature. We tell you how long to leave it before we go.
Is it worth trying it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We’ll give you a better idea when we quote.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
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When it isn’t the sealant
To be straight with you, there are a few things sealant won’t fix:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Adding movement joints to masonry that has none
- Failed render or damaged cladding panels
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Façade panels
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Concrete & block