Hampshire · England
External Mastic in St Mary Bourne
Our applicators work in St Mary Bourne on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Movement joints filled with mortar instead of sealant
- Rain getting behind render or cladding at a joint
- Weathered mastic that no longer stretches
External mastic in St Mary Bourne, done properly
For buildings in St Mary Bourne, 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. Typical jobs include cracked joints where brick meets render or frames and joints with sealant missing in places, on render & cladding joints, brickwork movement joints and joints between brick and frames.
Around St Mary Bourne, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in.
We stand behind the work with a one-year guarantee, so you’re covered after we have gone.
- Location
- St Mary Bourne (SP11)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for external mastic
There’s no set price list, because no two jobs are the same. What we look at:
- The product the joint needs
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- The amount of work
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Helping us quote
Before you ask for a quote, have a think about:
- Whether it’s a home or a business
- Access, such as stairs, a lift or height
- Where the property is
- How many joints, rooms or windows are involved
For a quick quote, get us on the phone, or email us if that’s easier. Tell us about the joints that need doing and we will talk you through the work and give you a clear quote.
Towns and villages near St Mary Bourne
What else we do in St Mary Bourne
What happens on the day
A visit follows a simple pattern: we check the joints, protect the area around them, do the work and tidy away. It generally takes a few hours to a few days, depending on the length of joint and the access. In a small place like St Mary Bourne, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- 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.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
Need a quote? Please phone 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and send you a clear quote before work begins.
Read more
Can I do it myself?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
St Mary Bourne buildings and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as Church of St Peter, the joints between older walls, newer extensions and the roofline need a sealant that can move. Schools such as St Mary Bourne Primary School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
St Mary Bourne is about 5 miles north-east of Andover, in Hampshire. If you need external mastic in St Mary Bourne, it’s easy to get a quote: please ring 0345 464 0079 or email us. We’re based in Crawley and cover Hampshire, St Mary Bourne included. St Mary Bourne is one of 683 places in Hampshire where we work. There’s also a page for Southampton, about 23 miles away.
All of SP11 is within our area for external mastic. Local streets include Spring Hill Lane, Springhill and Bells Meadow. Close by, we work in Binley (2 miles north), Wadwick (2 miles north-east), Hurstbourne Priors (3 miles south), Cole Henley (3 miles east) and Whitchurch (3 miles south-east). Further out, we also cover Basingstoke (13 miles east), Winchester (14 miles south), Andover (5 miles south-west), Tadley (13 miles north-east), Hyde (13 miles south) and Popley (14 miles east).
Around St Mary Bourne
Around St Mary Bourne, our work takes us to homes and buildings near Coronation Arms. The closest station to St Mary Bourne is Whitchurch (Hampshire) station, roughly 2.9 miles south-east. Nearby you’ll also find Finkley Down Farm Museum (3.2 miles south-west) and Andover War Memorial Hospital (4.9 miles south-west). For a walk, there’s Sidown Hill and Anton Lakes.
Common questions in St Mary Bourne
Can you do external mastic in St Mary Bourne?
Yes. We work across London and the South East, and St Mary Bourne is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
Is St Mary Bourne within the area you cover?
Yes. St Mary Bourne is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you seal joints where cladding meets other materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
When will the joints need doing again?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year.
Where do you work from?
We’re based in Crawley, West Sussex, and we work across South East England, London and Scotland.
Are you fully insured?
Yes. We’re fully insured for domestic and commercial work.
What information do you need?
Let us know what needs doing and where. We’ll ask anything else we need to know.
Is there a guarantee?
Yes: twelve months. If anything is not right with the work within the year, let us know and we will sort it.
Honest limits
To be straight with you, some problems need a different trade:
- Render that’s blown, hollow or coming away
- Cutting new joints into brickwork, which is building work rather than sealant work
- Rising or penetrating damp from elsewhere in the wall
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before you book.
Where we work in St Mary Bourne
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Concrete & block
- Brickwork movement joints
- Copings & trims
What happens if it’s left?
Running new sealant over the old bead rarely lasts. New sealant does not bond well to old, weathered sealant, so we always take the old sealant out. Older cottages and farmhouses around St Mary Bourne can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. Your quote takes all of that into account.
Why book with us
- Arbo and Everbuild products
- Colour picked to suit the job
- Old sealant always removed completely
- We leave the area clean and tidy
Take a look at what affects the cost or our reviews.
Signs you need external mastic in St Mary Bourne
Sunlight, wet weather and frost wear exterior sealant down. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
Look out for these signs:
- Plants rooting in failed movement joints
- Joints with sealant missing in places
- Movement joints filled with mortar instead of sealant
- Damp patches traced to an open external joint
Rented homes near Whitchurch (Hampshire) station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- Whether they seal over old material or remove it
- The length of the guarantee
- Are they insured?
- Whether VAT is included
How the job changes by surface
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. We reseal their joints with backing rod and a flexible product.
Cladding and façade panels
Cladding and façade panels are generally separated by sealed joints. We reseal them with a sealant suited to the panel material.