Hampshire · England
External Mastic in Monk Sherborne
We cover Monk Sherborne for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Joints where the bead has come unstuck
- Joints pointed up with cement by mistake
- Failed sealant between panels on a façade
DIY versus a professional finish
If you’re 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.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
External mastic in Monk Sherborne, done properly
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible sealant bridges the two where a rigid filler would soon crack. We’re often asked to deal with rigid filler in a joint that should flex and plants rooting in failed movement joints, across concrete & block, copings & trims and façade panels.
Older homes in small places like Monk Sherborne may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
You’re covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or send us an email.
- Location
- Monk Sherborne (RG26)
- Region
- Hampshire
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
When something else is needed
We will not take on work that will not last, so here’s what sealant can’t put right:
- Render that’s blown, hollow or coming away
- Cracked brickwork or render that needs a builder or plasterer
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Copings & trims
- Joints between brick and frames
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
What affects the cost of external mastic
We quote each job individually. This is what makes a difference:
- The old material and how stubborn it is
- The amount of work
- Any working-time requirements on site
- Which sealant suits the joint
The cost depends on the size of the job, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- A few pictures by email, if you can
- How we’d reach the joints
- What’s wrong with the joints now
- Roughly how big the job is
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we will take it from there.
Towns and villages near Monk Sherborne
Also in Monk Sherborne
When to call us in Monk Sherborne
Using the wrong sealant is another common reason. A stiff, general-purpose sealant cannot cope with a joint that moves a lot, so it pulls away from the edges.
If you can see any of these, it’s time to have the joints looked at:
- Moss and dirt in joints with no sealant left
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
- Movement joints with cracked, split or missing sealant
For landlords with property near Basingstoke station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Before booking anyone
- What guarantee comes with the work
- Whether they’re fully insured
- Is the old sealant removed completely?
- How long to leave it before use
What happens on the day
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to several days, depending on the building, and the area is left clean. For a village or hamlet like Monk Sherborne, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Mention any tricky access
- Let us know if you’ve seen damp or leaks
- For indoor joints, keep the area dry beforehand if you can
Getting a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
Read more
FAQs for Monk Sherborne
Can you do external mastic in Monk Sherborne?
Yes, Monk Sherborne is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
Do you work for landlords with property near Basingstoke station?
Yes, rental work is part of what we do. 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.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll give you the cure time for the product we used.
How long does external mastic last?
It varies from wall to wall: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Our work comes with a 12-month guarantee.
Are you insured?
Yes, we are fully insured for domestic and commercial work.
Do you work at height?
It depends on the height and the site. Low-level joints are straightforward; for higher ones, send details and we’ll confirm the access.
Is it messy?
Very little: the area around the joints is protected first, and we tidy up before we go.
Will the old sealant be removed?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
What external mastic looks like in Monk Sherborne
Historic houses like The Vyne (about 1.7 miles east) are a reminder that the area around Monk Sherborne has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of All Saints, the joints between older walls, newer extensions and the roofline need a sealant that can move. Managing a site like The Priory Primary School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Monk Sherborne is about 3 miles north of Basingstoke, in Hampshire. Jobs in Monk Sherborne get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Our Hampshire coverage runs to 683 places, Monk Sherborne among them. There’s also a page for Reading, roughly 12 miles from Monk Sherborne.
We work across RG26 for external mastic. Whether your property is on The Close, Ramsdell Road and Salters Heath Road or a nearby road, our applicators can take on the job. If you’re just outside Monk Sherborne, we cover Salters Heath (1 mile north-east), Charter Alley (1 mile north-west), Pamber End (1 mile north), Ramsdell (1 mile north-west) and West Heath (2 miles north-west). Within a short drive, we also cover Basingstoke (3 miles south), Fleet (13 miles east), Alton (13 miles south-east), Yateley (13 miles east), Tadley (3 miles north) and Hook (7 miles east).
What’s near Monk Sherborne
Locally, jobs take us to homes and businesses close to Everest Community Academy, among other places. Monk Sherborne’s nearest station is Basingstoke station, about 3.1 miles south-east of the centre. A little further out are Park Prewett Hospital (1.8 miles south) and Basing House (4.1 miles south-east). Open spaces near Monk Sherborne include Daneshill Park Woods.
Landlord and commercial work in Monk Sherborne
Hotels need rooms back in use, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Check external joints each spring
- Point out the joints to other trades
- Act on the first splits you see
- Keep movement joints as flexible joints, not mortar
Only paint over the joint if we’ve confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted, and paint can crack as the joint moves.
Once a joint cannot move, the wall finds another way, often as cracks near the joint. Catch it early and you reduce the risk.