Isle of Wight · England
Shalcombe External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Shalcombe, backed by a 12-month guarantee. Ask us for a quote.
- Damp patches traced to an open external joint
- Leaking joints around cladding and façade panels
- Sealant pulling away from one side of the joint
Leave it or put it right?
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Older cottages and farmhouses around Shalcombe can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
A few things move the cost up or down: 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 us?
- Rated 4.9 stars on Google
- Anti-fungal sanitary silicone in wet areas
- A sealant colour to suit the surroundings
- More than 20 years in sealant work
Read our cost guide or what customers say.
How we handle external mastic in Shalcombe
On houses, flats and commercial buildings across Shalcombe, we reseal joints in brickwork, render, cladding and façade panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. We work on concrete & block, façade panels and brickwork movement joints, and people most often call us about cracked joints where brick meets render or frames and joints where the bead has come unstuck.
Around Shalcombe, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Our work is backed for twelve months.
- Location
- Shalcombe (PO41)
- Wider area
- Isle of Wight
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
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. Everything old must be removed first.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How we quote for external mastic
The quote reflects the job in front of us. We take into account:
- When we can work, for business premises
- The size of the job
- Any mould that needs treating
- The number of rooms or windows
The cost reflects the work involved, not guesswork. That is why we ask about the job first and give you a clear quote before work begins.
Asking for a quote
Photos by email are helpful but not essential. Try to tell us:
- Where the job is, and your postcode
- What’s wrong with the joints now
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before any work starts.
Common questions in Shalcombe
Can you do external mastic in Shalcombe?
Yes, Shalcombe is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Does living near the coast affect external mastic in Shalcombe?
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.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
Should I point up the gap in my brickwork?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
Do you do commercial work?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
Can tenants book the work?
Of course. Check with your landlord; we can send the quote to them too.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Can you seal over the old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
Signs you need external mastic in Shalcombe
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
Signs it’s time to call us include:
- Moss and dirt in joints with no sealant left
- Movement joints with cracked, split or missing sealant
- Hard, crazed mastic that has stopped moving
- Failed sealant between panels on a façade
Homes close to St. Mary's Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
What to look for in a quote
- Who does the work, and how experienced they are
- When the joint can take water or movement
- How long the guarantee is
- What the quote includes, VAT included or not
Looking after it afterwards
After the cure time, these simple habits help:
- Avoid pressure-washing directly into sealant joints
- Clear growth from the base of walls and joints
- Check external joints each spring
- Tell anyone working on the walls about the movement joints
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick.
Nearby places to Shalcombe
Other services in Shalcombe
Landlords, agents and businesses in Shalcombe
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
We also work for property managers and facilities teams in Shalcombe and across the Isle of Wight. We can quote a run of properties together.
What we do, step by step
All our tools and materials come with us in the van. After a quick look at the joints together, we protect the area and start. It normally takes a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Shalcombe, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Mention if the joints have been sealed before
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
How to get a quote
Getting a quote is simple: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we’ll take it from there.
Advice
Walls and rooflines in Shalcombe
Shalcombe is within about 2 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 Mottistone Manor (about 1.3 miles south-east) nearby, there’s older building stock in the area around Shalcombe as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Around Shalcombe, as everywhere, external mastic is only as good as the preparation behind it.
Shalcombe is about 6 miles west of Newport, in the Isle of Wight. Homes, rented property, offices and hotels in Shalcombe is covered for external mastic, old or new, large or small. Every job comes with our one-year guarantee. Shalcombe is one of 125 towns and villages in the Isle of Wight we cover. Southampton is on our list too, about 17 miles from Shalcombe.
Every address in PO41 is within our area for external mastic. Nearby, we also carry out external mastic in Dunsbury (1 mile south-west), Hulverstone (1 mile south), Brook (1 mile south-west), Newbridge (1 mile north-east) and Wellow (1 mile north). Larger places within reach include Newport (6 miles east), Ryde (13 miles east), Cowes (8 miles north-east), Sandown (12 miles east), Shanklin (12 miles east) and Ventnor (11 miles south-east). Remote and island addresses need a little more planning, so please mention your location when you phone 0345 464 0079 or send us an email.
Local landmarks in Shalcombe
Other landmarks nearby include Calbourne Water Mill And Rural Museum (1.3 miles north-east) and Yarmouth Castle (3.7 miles north-west). For a walk, there’s Westover Down.