Isle of Wight · England
External Mastic in Freshwater
External mastic across Freshwater and nearby, with old sealant always removed completely and a 12-month guarantee.
- Joints with sealant missing in places
- Old sealant gone brittle and cracked
- Joints pointed up with cement by mistake
About our external mastic in Freshwater
On houses, flats and commercial buildings across Freshwater, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean, sound faces and a controlled depth. If you have damp patches traced to an open external joint and panel joints letting water in, we can help, on concrete & block, façade panels and copings & trims alike.
Around Freshwater, garages, outbuildings and extensions all add to the joints on the outside of a home. Gutter ends, garage door frames and the joints where an extension meets the house are typical spots for leaks.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Freshwater (PO40)
- Wider area
- Isle of Wight
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Outside joints around Freshwater
Freshwater 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. That is 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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Homes close to All Saints' Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Freshwater is about 5 miles south of Lymington, in the Isle of Wight. Every kind of property in Freshwater can book us for external mastic, old or new, large or small. Every job comes with our 12-month guarantee. Our the Isle of Wight coverage runs to 125 places, and Freshwater is one of them. There’s also a page for Southampton, roughly 17 miles from Freshwater.
Here we cover the PO40 postcode area for external mastic. Whether your property is on Dall Square, High Street and The Square or anywhere close by, our applicators can take on the job. Close by, we work in Easton (1 mile south-east), Colwell (1 mile north-west), Norton Green (1 mile north), Afton (1 mile south-east) and Totland (1 mile west). Further out, we also cover Newport (10 miles east), Cowes (11 miles north-east), Shanklin (15 miles east), Ventnor (15 miles south-east), East Cowes (12 miles north-east) and Barton (10 miles east). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Near you in Freshwater
We work in homes and buildings around The Red Lion pub, among other places. Other landmarks nearby include Yarmouth Castle (1.9 miles north-east) and Ferguson Family Museum (0.7 miles north-east). For a walk, there’s Lymington and Keyhaven Marshes Nature Reserve and Afton Down.
Places near Freshwater
Also in Freshwater
Why act early in Freshwater
Done well, a resealed joint is a neat, straight line that suits the wall. A rushed bead with no backing looks untidy and does not last. In a smaller place like Freshwater, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
Why choose Mr Mastic in Freshwater
- Tidy, careful work
- A sealant colour to suit the surroundings
- We never seal over old sealant
- Approved under the ARBOMaster scheme
See our cost guide or what customers say.
What sealant work cannot fix
We will not take on work that will not last, so here’s what sealant can’t put right:
- Adding movement joints to masonry that has none
- Movement that’s more than a sealant joint can take
- Render that is blown, hollow or coming away
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before booking.
Joints and surfaces we work on
- Façade panels
- Brickwork movement joints
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Copings & trims
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What affects the quote in Freshwater
Some jobs are bigger than they look, and some smaller. The main factors:
- The number of rooms or windows
- How much old sealant there is and how hard it is to remove
- The number and length of the joints
- Working hours on commercial sites
What you pay reflects the work, not guesswork. That’s why we ask about the job first and give you a clear quote before we start.
Asking for a quote
To help us quote quickly, let us know:
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
- Any previous sealing or DIY work
- The address or postcode of the job
For external mastic in Freshwater, ring 0345 464 0079 or send us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.
What we are called out for in Freshwater
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it cannot stretch and tears as soon as the joint widens.
People usually contact us after spotting one of these:
- Weeds or debris growing in open joints
- Movement joints with cracked, split or missing sealant
- Sealant pulling away from one side of the joint
- Weathered mastic that no longer stretches
For site and facilities teams at buildings such as All Saints Church of England Primary School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
What your quote should include
- What preparation is included
- Which colour the sealant will be
- What guarantee comes with the work
- What the cure time is
How it works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. For a job in Freshwater, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Mention any leaks or damp you’ve noticed
- Let us know about stairs, lifts or work at height
- Let us know about earlier repairs to the joints
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or email us.
Advice
Freshwater questions
Can you do external mastic in Freshwater?
Yes, Freshwater is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.
Is external mastic in a coastal place like Freshwater any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Do you work for hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages.
Is it OK to fill a movement joint with cement?
No, not where the gap is a movement joint. Filling it with mortar defeats its purpose. A flexible sealant is the right fill.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
What’s an expansion joint in brickwork?
A vertical gap in a long brick wall is usually a movement joint. It gives the wall room to move and needs a flexible seal, not mortar.
Do you work for landlords and businesses?
Yes, we do. Domestic, commercial and hotel work are all part of what we do, and we’re fully insured.
Looking after it afterwards
So the new joints stay in good condition:
- Leave the joints unpainted unless we’ve said otherwise
- Keep high-pressure jets off the joints
- Never let anyone fill a movement joint with mortar
- Check external joints each spring
Avoid pressure-washing straight into the joints. High-pressure water can lift the edges over time.
Act while the splits are small. Then it’s a straightforward cut-out and reseal before water has had years to get in.