Isle of Wight · England
External Mastic in Shorwell
External mastic for Shorwell, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Movement joints filled with mortar instead of sealant
- Weathered mastic that no longer stretches
- Plants rooting in failed movement joints
How the job changes by surface
Concrete and blockwork
The face of concrete or block is often dusty, so cleaning and priming matter. A primer goes on where the product requires one before sealing.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. The movement joint takes that up, so the sealant in it must stay soft and stretchy.
External mastic in Shorwell, done properly
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the joint does not stand out. We work on concrete & block, façade panels and brickwork movement joints, and the jobs we see most are rigid filler in a joint that should flex and weathered mastic that no longer stretches.
In a village or hamlet like Shorwell, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
All of our work is guaranteed for twelve months, in Shorwell and everywhere else we cover.
- Place
- Shorwell (PO30)
- Wider area
- Isle of Wight
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Shorwell
Also in Shorwell
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
We work for landlords and agents as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
How it works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, do the work and clear up. Most jobs take anything from a few hours to several days, depending on the building. Somewhere like Shorwell needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that is easy.
Read more
Questions from Shorwell
Do you cover Shorwell for external mastic?
Yes, Shorwell is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job.
Does the coastal weather in Shorwell affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are normally the first to need attention.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme.
Do you guarantee your work?
Yes, always. There’s a 12-month guarantee on every job, wherever you are.
Do you work for landlords and businesses?
Yes. We work for householders, landlords, letting agents, businesses and hotels in Shorwell.
Do the sealants smell?
Possibly a little. Any smell clears as the sealant cures.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and you will get one quote.
How to look after the new joints
Joint life depends on how it’s used and looked after. We suggest:
- Keep water from gutters off the wall
- Walk round the building once a year and look at the joints
- Don’t let climbing plants root in the sealant
- Show decorators and builders where the movement joints are
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Act while the splits are small. Then it’s a straightforward cut-out and reseal before water has had years to get in.
Why it’s worth doing now in Shorwell
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and doesn’t last so it’s worth doing right. In a small place like Shorwell, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Doing several joints on one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll give you a clear quote for the lot.
Why choose Mr Mastic in Shorwell
- A sealant colour to suit the surroundings
- 20+ years of sealant experience
- Approved under the ARBOMaster scheme
- Quality sealants from Arbo and Everbuild
Take a look at our cost guide or our reviews.
Do you need external mastic in Shorwell?
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
Signs it’s time to call us include:
- Movement joints with cracked, split or missing sealant
- Water getting into walls through failed joints
- Weathered mastic that no longer stretches
- Joints where the bead has come unstuck
In and around Shorwell, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Questions to ask before you book
- When the joint can take water or movement
- Whether all the old sealant comes out first
- The length of the guarantee
- Are they insured?
What sealant work can’t fix
We will not take on work that won’t last, so here’s what sealant can’t put right:
- Walls that need new movement joints cut into them
- Cracks in the bricks or render themselves, away from the joints
- Damp that is not coming from the joint
Not sure which it is? You can call 0345 464 0079 or send us an email and we’ll tell you honestly.
Where we work in Shorwell
- Façade panels
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
Outside joints around Shorwell
Shorwell is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Homes close to St. Peter's Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Shorwell is about 5 miles south-west of Newport, in the Isle of Wight. Shorwell gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 125 places across the Isle of Wight. We also work in Portsmouth, about 17 miles from Shorwell.
Jobs for external mastic in PO30 is quoted and booked the same way as anywhere else. Local streets include Fine Lane, Orchards Way and Farriers Way, all of which we cover. We also cover Thorncross (1 mile south-west), Little Atherfield (2 miles south), Moortown (2 miles west), Brighstone (2 miles west) and Chillerton (2 miles east). We also work in nearby towns such as Newport (5 miles north-east), Ryde (10 miles north-east), Cowes (8 miles north), Sandown (9 miles east), Shanklin (8 miles east) and Ventnor (7 miles south-east). For island and remote addresses, a little more planning is needed.
What’s near Shorwell
Around Shorwell, our work takes us to homes and buildings near The Crown Inn, among other places. Nearby you will also find Carisbrooke Castle (3.6 miles north-east) and Whitecroft Hospital (3.1 miles north-east). Green spaces nearby include Brighstone Down.