Isle of Wight · England
External & façade joints in Bonchurch, Isle of Wight
Sealing brickwork movement joints, render, cladding and façade joints for Bonchurch, backed by a one-year guarantee. Call for a quick quote.
- Movement joints with cracked, split or missing sealant
- Damp patches traced to an open external joint
- Gaps where render, brick and frames meet
Questions from Bonchurch
Do you work for landlords with property near Shanklin station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Is external mastic in a coastal place like Bonchurch any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
How long will you be here?
Typically it takes anything from a few hours to several days, depending on the building. Bigger jobs take longer, and we will say how long yours will take.
Do you do commercial work?
Yes. We can plan bigger jobs in stages.
Do you have insurance?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or drop us an email.
How often do external joints need resealing?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Our work comes with a one-year guarantee.
How we handle external mastic in Bonchurch
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 mortar or filler would crack. We work on concrete & block, joints between brick and frames and render & cladding joints, and people most often call us about rain getting behind render or cladding at a joint and failed sealant between panels on a façade.
Around Bonchurch, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in.
Each job carries a 12-month guarantee, whatever its size.
- Where
- Bonchurch (PO38)
- Region
- Isle of Wight
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What affects the quote in Bonchurch
For a quick quote, just ask. The main things that affect it are:
- Whether there’s mould to deal with
- Whether the work is at height
- The product the joint needs
- The number and length of the joints
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
What we need to know
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Access, such as stairs, a lift or height
- Where the job is, and your postcode
- The type of property
- The rough size of the job
For external mastic in Bonchurch, phone 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 work begins.
What we’re called out for in Bonchurch
If plants are growing out of a joint, the sealant has normally failed or was never there. Roots and dirt hold water against the wall and speed up the damage.
These are the problems we are asked about most:
- Gaps where render, brick and frames meet
- Moss and dirt in joints with no sealant left
- Joints where the bead has come unstuck
- Joints pointed up with cement by mistake
Rented homes near Shanklin station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Questions to ask before you book
- Which colour the sealant will be
- The length of the guarantee
- Whether all the old sealant comes out first
- Whether the sealant suits the joint
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracked brickwork or render that needs a builder or plasterer
- Render that’s blown, hollow or coming away
If you are not sure, just ring 0345 464 0079 or drop us an email and we will give you a straight answer.
What we seal
- Render & cladding joints
- Façade panels
- Concrete & block
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Housing providers, facilities teams and property managers book us too in Bonchurch and across the Isle of Wight. We can quote a run of properties together.
Also near Bonchurch
More services for Bonchurch
What external mastic looks like in Bonchurch
Bonchurch is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces 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.
Managing a site like St Catherine's School? Then larger buildings have long runs of movement joint that eventually need resealing. For an older house near a landmark such as Old St. Boniface Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Bonchurch is about 2 miles south of Shanklin, in the Isle of Wight. Jobs in Bonchurch get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Bonchurch is one of 125 towns and villages in the Isle of Wight we cover for external mastic. There’s also a page for Portsmouth, about 15 miles away.
We work across PO38 for external mastic and the streets around it. External mastic is available to properties on Shore Road, Leeson Road and Bonchurch Village Road. Neighbouring places we cover for external mastic include Luccombe Village (1 mile north), Ventnor (1 mile west), Steephill (2 miles west), Wroxall (2 miles north-west) and Shanklin (2 miles north). Further out, we also cover Newport (9 miles north-west), Ryde (9 miles north), Cowes (12 miles north-west), Sandown (4 miles north), East Cowes (12 miles north-west) and Oakfield (8 miles north). Remote and island addresses need a little more planning, so please mention your location when you ring 0345 464 0079 or drop us an email.
What’s near Bonchurch
Typical jobs here are in homes near Bonchurch Inn. Bonchurch’s nearest station is Shanklin station, about 2.4 miles north. Well-known places in the area include Sandown Castle (4.3 miles north) and Arthur Webster Memorial Hospital for Children (2.5 miles north). Not far away are Alverstone Mead and St Boniface Down.
Can I do it myself?
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Aftercare tips
A little care helps the new joints last. Our advice:
- Clear growth from the base of walls and joints
- Look over the joints every year, ideally after winter
- Act on the first splits you see
- Check the sealant is paintable before painting near it
Don’t paint over the new sealant unless we have said the product is paintable. Paint can crack on a flexible joint and spoil the finish.
Act while the splits are small. Then it’s a straightforward cut-out and reseal before water has had years to get in.
What happens on the day
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself normally takes a few hours to a few days, depending on the length of joint and the access, depending on how much there is to do. For a village or hamlet like Bonchurch, 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 look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Move anything stored near the joints
- Mention any sign-in or site rules at work premises
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you are ready, phone 0345 464 0079 or email us.