Isle of Wight · England
External & façade joints in Branstone, Isle of Wight
External mastic for Branstone, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Joints with sealant missing in places
- Failed sealant between panels on a façade
- Old sealant gone brittle and cracked
How it works
There’s no need to move everything out, only the area right around the joints. Everything nearby is protected, and the job takes a few hours to a few days, depending on the length of joint and the access in most cases. For a village or hamlet like Branstone, 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.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
How to prepare
- Let us know about earlier repairs to the joints
- Mention any sign-in or site rules at work premises
- Let us know about parking restrictions
Getting a quote
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, call 0345 464 0079 or send us an email.
Related advice
About our external mastic in Branstone
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall so the joint does not stand out. Common call-outs are for weathered mastic that no longer stretches and water getting into walls through failed joints, on joints between brick and frames, render & cladding joints and concrete & block.
External sealant needs dry, clean surfaces, so work around Branstone is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
The work is covered for a year after we finish. If there’s a problem with it, please ring 0345 464 0079 or email us.
- Location
- Branstone (PO36)
- Wider area
- Isle of Wight
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Your questions about external mastic in Branstone
Is Branstone within the area you cover?
Yes. Branstone is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
Can you help a landlord with a rental near Shanklin station?
Yes. We work for landlords and agents as well as homeowners. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
What is a movement joint?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
How long does the job take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation. We’ll confirm how long when we quote.
How do you reach high-level joints?
It depends on the building. Tell us the height, the number of joints and what’s below them, and we’ll confirm what access is needed.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. We remove it all first.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Why it’s worth doing now in Branstone
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost around the joint, so the damage spreads beyond the joint. Around Branstone, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
Leaving a failed joint usually makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why us?
- Trusted Arbo and Everbuild sealants
- Homes, businesses and hotels
- Anti-fungal sanitary silicone in wet areas
- ARBOMaster approved applicator
See our cost guide or customer reviews.
What we can’t put right
New sealant cannot fix everything, and we’d rather say so up front. Sealant won’t put right:
- Cracked brickwork or render that needs a builder or plasterer
- Structural movement, which needs a surveyor or engineer
- Failed render or damaged cladding panels
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Where we work in Branstone
- Copings & trims
- Brickwork movement joints
- Façade panels
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
Landlord and commercial work in Branstone
We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Branstone buildings and the weather
Branstone is within about 3 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, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Shanklin station? Then outside joints that have cracked can let damp into a rental, so check them between lets. Schools such as Newchurch Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Branstone is about 5 miles south-east of Newport, in the Isle of Wight. Wherever you are in the PO36 postcode area, we cover external mastic for homes and businesses. 125 places in the Isle of Wight are on our list, from the larger towns to small villages. There’s also a page for Portsmouth, roughly 12 miles from Branstone.
Every address in PO36 is covered for external mastic, from the main roads to the quietest streets. Whether your property is on Branstone Farm Lane and Stockmans Close or anywhere close by, we can help. Neighbouring places we cover for external mastic include Winford (1 mile east), Apse Heath (1 mile south-east), Princelett (1 mile south), Hale Common (1 mile west) and Newchurch (1 mile north). We also work in nearby towns such as Newport (5 miles north-west), Ryde (5 miles north-east), Cowes (8 miles north-west), Ventnor (4 miles south), East Cowes (8 miles north-west) and Oakfield (5 miles north-east). Remote and island addresses need a little more planning, so please mention your location when you ring 0345 464 0079 or send us an email.
Near you in Branstone
In Branstone, that means homes and buildings near Sandown Bay Academy, among other places. The nearest railway station is Shanklin station, roughly 1.9 miles south-east. Nearby you’ll also find Wight Aviation Museum (1.3 miles east) and Arthur Webster Memorial Hospital for Children (1.8 miles south-east). For a walk, there’s Alverstone Mead and Stenbury Down.
What affects the cost of external mastic
There’s no set price list. What we look at:
- How many areas need sealing
- Mould in or behind the old joints
- The old material and how stubborn it is
- Access and height
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
Before you ask for a quote, have a think about:
- The address or postcode of the job
- Whether it has been sealed before
- A few photos by email, if you can
- Any access issues, like height or stairs
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Also near Branstone
What else we do in Branstone
Do you need external mastic in Branstone?
UV, rain and frost all age exterior sealant. Over the years it hardens, cracks on the surface and loses its give, so the joint eventually tears or comes away from one side.
Common reasons people contact us are:
- Weathered mastic that no longer stretches
- Sealant pulling away from one side of the joint
- Panel joints letting water in
- Plants rooting in failed movement joints
In the older streets around All Saints' Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
What your quote should include
- Whether the sealant suits the joint
- What happens if the job turns out different
- Is VAT in the price?
- The length of the guarantee