Isle of Wight · England
Calbourne External Mastic
External mastic for Calbourne and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Sealant that has lost its bond to the brick or render
- Movement joints filled with mortar instead of sealant
- Brick movement joints where the sealant has split
How we quote for external mastic
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- How many rooms, windows or areas are involved
- The amount of work
- Any working-time requirements on site
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we will talk you through it.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- If someone has resealed it before
- The type of property
- Roughly how big the job is
- How we’d reach the joints
If you’re in Calbourne and need external mastic, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
External mastic in Calbourne, done properly
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing. If you’re dealing with rain getting behind render or cladding at a joint and joints where the bead has come unstuck, we can put it right, on brickwork movement joints, concrete & block and façade panels alike.
Older homes in small places like Calbourne may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Every job comes with a one-year guarantee, wherever you are in the Isle of Wight.
- Location
- Calbourne (PO30)
- Wider area
- Isle of Wight
- Cover
- 12 months on all our work
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Landlord and commercial work in Calbourne
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Adding movement joints to masonry that has none
- Subsidence or other structural problems
- Failed render or damaged cladding panels
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Surfaces we seal
- Brickwork movement joints
- Façade panels
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
Common questions in Calbourne
Is Calbourne within the area you cover?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you do external mastic in Calbourne?
Yes, Calbourne is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
Is there a guarantee?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator.
Is it OK to seal over old sealant?
No, it will not last. It may look fine at first, but the new bead soon lifts. The old sealant has to come out completely.
Can you work on commercial sites?
Yes, regularly. We can plan bigger jobs in stages.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
Will the old sealant be removed?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Places near Calbourne
Other services in Calbourne
How the job changes by surface
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. A primer goes on where the product requires one before the bead.
Brickwork movement joints
Clay brickwork grows slightly over its life and moves with the weather. That movement goes into the joint, so its sealant has to stay flexible.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Point out the joints to other trades
- Never let anyone fill a movement joint with mortar
- Keep water from gutters off the wall
- Check external joints each spring
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
A joint that has stopped moving pushes the movement elsewhere, often as cracks near the joint. Catch it early and you reduce the risk.
What we do, step by step
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. Typically it takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Calbourne, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Let us know about stairs, lifts or work at height
- Tell us about any previous sealing or DIY attempts
Getting a quote
We don’t publish a price list. Instead, we send you a clear quote for your job. To arrange one, phone 0345 464 0079 or drop us an email.
Advice
What external mastic looks like in Calbourne
Calbourne is within about 3 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. With historic houses such as Swainston Manor (about 1.2 miles north-east) nearby, there’s older building stock in the area around Calbourne as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
In the older streets around All Saints' Church, the joints between older walls, newer extensions and the roofline need a sealant that can move. In and around Calbourne, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Calbourne is about 5 miles west of Newport, in the Isle of Wight. Jobs in Calbourne get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 125 places across the Isle of Wight, from the larger towns to small villages. There’s also a page for Southampton, roughly 16 miles from Calbourne.
Here we cover the PO30 postcode area for external mastic. That includes homes and businesses on Sun Hill, Elm Lane and Lynch Lane and the roads around them. If you’re just outside Calbourne, we cover Newbridge (1 mile north-west), Ningwood (2 miles north-west), Shalcombe (2 miles west), Wellow (2 miles west) and Hulverstone (3 miles south-west). Further out, we also cover Newport (5 miles east), Ryde (11 miles east), Cowes (7 miles north-east), Sandown (11 miles east), Shanklin (10 miles east) and Ventnor (10 miles south-east). For island and remote addresses, the job takes a little more planning.
Local landmarks in Calbourne
Around Calbourne, our work takes us to homes and buildings near The Sun pub, among other places. Well-known places in the area include Calbourne Water Mill And Rural Museum (0.6 miles west) and Carisbrooke Castle (3.8 miles east). The countryside around Calbourne includes Brighstone Down.