Isle of Wight · England
Chale Green External Mastic
External mastic for Chale Green, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Water getting into walls through failed joints
- Failed seals between different materials
- Plants rooting in failed movement joints
External mastic in Chale Green, done properly
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. We work on joints between brick and frames, concrete & block and façade panels, and people most often call us about joints pointed up with cement by mistake and moss and dirt in joints with no sealant left.
Around Chale Green, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water generally gets in, and they need the right sealant at the right depth.
Every job comes with our one-year guarantee, wherever you are in the Isle of Wight.
- Where
- Chale Green (PO38)
- Wider area
- Isle of Wight
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
How we quote for external mastic
The price is agreed before any work begins. It takes into account:
- Any working-time requirements on site
- How many areas need sealing
- Whether there’s mould to deal with
- Which sealant suits the joint
Combining jobs into one visit is normally more efficient than separate visits. You’ll get one clear quote for the whole job.
What we need to know
To help us quote quickly, please include:
- Where the job is, and your postcode
- Whether it’s a home or a business
- Any access issues, like height or stairs
- If someone has resealed it before
Need a quote? Please ring 0345 464 0079 or drop us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before any work starts.
Leave it or put it right?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. Too stiff a sealant can pull at the edges and break them. In a small place like Chale Green, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What you get with us
- Neat joints and a tidy finish
- Fully insured
- Anti-fungal silicone where joints get wet
- Quality sealants from Arbo and Everbuild
Take a look at how sealant jobs are priced or customer reviews.
Chale Green buildings and the weather
Chale Green is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Historic houses like Wolverton Manor (about 2.5 miles north-west) are a reminder that the area around Chale Green 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.
In the older streets around St. James' Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Chale Green is about 6 miles south of Newport, in the Isle of Wight. Homes, rented property, offices and hotels in Chale Green is covered 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 Chale Green is one of them. We also work in Portsmouth, about 17 miles from Chale Green.
Here we cover the PO38 postcode area for external mastic. That includes homes and businesses on East View Lane, Spanners Close and Chale Green and the roads around them. Nearby, we also carry out external mastic in Pyle (1 mile south-west), Atherfield Green (1 mile west), Little Atherfield (1 mile west), Chillerton (2 miles north) and Shorwell (2 miles north-west). Within a short drive, we also cover Newport (6 miles north), Ryde (10 miles north-east), Cowes (10 miles north), Sandown (7 miles east), Shanklin (6 miles east) and Ventnor (5 miles east). If you are somewhere remote, the job takes a little more planning, so mention it when you ask for a quote.
Local landmarks in Chale Green
Well-known places in the area include Blackgang Sawmill Museum (1.8 miles south) and Whitecroft Hospital (3.9 miles north). Open spaces near Chale Green include Stenbury Down.
Landlord and commercial work in Chale Green
Housing providers, facilities teams and property managers book us too in Chale Green and across the Isle of Wight. We can quote a run of properties together, and we are fully insured.
Landlords and agents in Chale Green can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for.
Should I try it myself 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.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Your questions about external mastic in Chale Green
Does the coastal weather in Chale Green affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Can you do external mastic in Chale Green?
Yes. We work across London and the South East, and Chale Green is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Can you reach joints on upper floors?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher work, tell us about the building and we’ll confirm what’s needed.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status.
What does external mastic cost?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. We agree the price before any work begins.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Why do you put foam in the joint first?
That’s backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will tell you how long to leave the joint.
The process
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours to a few days, depending on the length of joint and the access, depending on how much there is to do. Somewhere like Chale Green needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Tell us if parking is tricky
- Clear the area around the work
Getting a quote
We quote each job on its own, so start by telling us what you need. Just call 0345 464 0079 or email us with the details and send photos if you have them.
Related advice
How to look after the new joints
A little care helps the new joints last. We recommend:
- Fix overflowing gutters above sealed joints
- Check external joints each spring
- Avoid pressure-washing directly into sealant joints
- Make sure movement joints are not pointed over
Follow the cure time we give you before the joint is knocked or disturbed. Most exterior sealants skin fast but take longer to cure right through.
Small splits are the time to act. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
Also near Chale Green
Other services in Chale Green
When to call us in Chale Green
Using the wrong sealant is another common reason. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, and it tears off the sides.
People normally contact us after spotting one of these:
- Hard, crazed mastic that has stopped moving
- Leaking joints around cladding and façade panels
- Water getting into walls through failed joints
- Movement joints with cracked, split or missing sealant
Around Chale Green, as everywhere, external mastic is only as good as the preparation behind it.
Before you book anyone
- What preparation is included
- Who does the work, and how experienced they are
- Which colour the sealant will be
- What the quote includes, VAT included or not