Isle of Wight · England
Brighstone External Mastic
Movement joints in Brighstone need attention? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Plants rooting in failed movement joints
- Old sealant gone brittle and cracked
- Gaps where render, brick and frames meet
Why act early in Brighstone
Running new sealant over the old bead rarely lasts. New sealant doesn’t bond well to old, weathered sealant, so the old joint is cut out fully first. Older cottages and farmhouses around Brighstone can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or send us an email and we’ll talk you through it.
Why Brighstone customers choose us
- We agree the colour with you first
- A 12-month guarantee on all work
- Experience in homes, commercial sites and hotels
- Fully insured
Read what affects the cost and our reviews.
External mastic in Brighstone
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We work on brickwork movement joints, joints between brick and frames and render & cladding joints, and the jobs we see most are cracked joints where brick meets render or frames and weathered mastic that no longer stretches.
In a village or hamlet like Brighstone, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
You get a one-year guarantee, the same in Brighstone as everywhere else we work.
- Where
- Brighstone (PO30)
- Wider area
- Isle of Wight
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Can I do it myself?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so tell us about it when you ask for a quote.
Honest limits
Before booking, it’s worth knowing the limits too:
- Cracked brickwork or render that needs a builder or plasterer
- Failed render or damaged cladding panels
- Damp that isn’t coming from the joint
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Surfaces we seal
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
- Façade panels
- Copings & trims
- Brickwork movement joints
The process
On the day, we look over the joints with you first, so there are no surprises. We protect the surfaces around the joints before any work begins. Most jobs take a few hours for a handful of joints, longer for a whole elevation. Somewhere like Brighstone 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.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- 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.
Getting ready for the visit
- 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
Get a quote
Want a quote for external mastic? Please call 0345 464 0079 or email us with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
Walls and rooflines in Brighstone
Brighstone is close to 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. Historic houses like Mottistone Manor (about 1.4 miles north-west) are a reminder that the area around Brighstone has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
Homes close to St. Mary's Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Brighstone is about 6 miles south-west of Newport, in the Isle of Wight. Every kind of property in Brighstone is covered for external mastic. Every job comes with our one-year guarantee. Brighstone is one of 125 places in the Isle of Wight we cover. Our Portsmouth page covers work nearby (18 miles or so).
Jobs for external mastic in PO30 works the same way as everywhere else we cover. That includes homes and businesses on Main Road, Meadows Close and Wilberforce Road and the roads around them. You’ll find Brighstone on the B3399, so it’s easy for us to get to with everything needed for external mastic. Close by, we work in Moortown (1 mile north), Thorncross (1 mile south-east), Shorwell (2 miles east), Little Atherfield (3 miles south-east) and Atherfield Green (3 miles south-east). Within a short drive, we also cover Newport (6 miles north-east), Ryde (12 miles north-east), Cowes (9 miles north-east), Sandown (10 miles east), Shanklin (10 miles east) and Ventnor (9 miles east). Remote and island addresses need a little more planning, so please mention your location when you call 0345 464 0079 or drop us an email.
Landmarks near Brighstone
In Brighstone, that means homes and buildings near The Three Bishops pub. Other landmarks nearby include Carisbrooke Castle (4.8 miles north-east) and Whitecroft Hospital (4.7 miles north-east). Not far away are Brighstone Down.
Nearby places to Brighstone
Also in Brighstone
Signs you need external mastic in Brighstone
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
The problems people usually mention when they call include:
- Sealant pulling away from one side of the joint
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
- Joints with sealant missing in places
For site and facilities teams at buildings such as Brighstone Church of England Aided Primary School, larger buildings have long runs of movement joint that eventually need resealing.
What your quote should include
- When the joint can take water or movement
- What insurance they hold
- How the joint is cleaned and prepared
- What happens if they find a problem under the old sealant
FAQs for Brighstone
Does the coastal weather in Brighstone affect outside sealant?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Can you do external mastic in Brighstone?
Yes. We work across London and the South East, and Brighstone is part of that. Just phone 0345 464 0079 or drop us an email with a few details of the job, and we’ll send you a clear quote.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
What information do you need?
Tell us what needs doing and where, plus pictures if you have them. If we need more, we’ll ask.
Will there be a smell?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
How long does external mastic take?
Most jobs take a few hours for a handful of joints, longer for a whole elevation. Your quote will say how long we expect yours to take.
Do you use backing rod?
That’s backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
Can new sealant go over the old?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Looking after it afterwards
Looking after new joints is easy:
- Keep water from gutters off the wall
- Point out the joints to other trades
- Look over the joints every year, ideally after winter
- Ask before painting over external sealant
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.