Isle of Wight · England
Adgestone External Mastic
External mastic in Adgestone from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Sealant pulling away from one side of the joint
- Rain getting behind render or cladding at a joint
- Movement joints filled with mortar instead of sealant
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. Once we have agreed what’s being done, the area is protected and the work begins. It normally takes a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Adgestone, the journey is planned in advance: 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.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- For indoor joints, keep the area dry beforehand if you can
- Keep children and pets away from the work area
Ask for a quote
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, and email pictures if that’s easy.
Advice
About our external mastic in Adgestone
For buildings in Adgestone, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean joint faces and the right depth. Typical jobs include plants rooting in failed movement joints and failed sealant between panels on a façade, on façade panels, joints between brick and frames and brickwork movement joints.
External sealant needs dry, clean surfaces, so work around Adgestone is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
All our work comes with a one-year guarantee, wherever you are in the Isle of Wight.
- Location
- Adgestone (PO36)
- Wider area
- Isle of Wight
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What affects the quote in Adgestone
Your quote is based on your job. We look at:
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
- Working hours on commercial sites
- The number of rooms or windows
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Call for a quick quote and we’ll go through it with you.
Helping us quote
When you contact us, it’s useful to know:
- If it’s domestic, commercial or a hotel
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. Whenever you are ready, ring 0345 464 0079 or send us an email.
Do you need external mastic in Adgestone?
The wrong product in a moving joint is a classic cause. A stiff, general-purpose sealant can’t cope with a joint that moves a lot, so it pulls away from the edges.
The most common problems we see are:
- Joints pointed up with cement by mistake
- Brick movement joints where the sealant has split
- Gaps where render, brick and frames meet
- Weathered mastic that no longer stretches
For site and facilities teams at buildings such as Brading Church of England Controlled Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Comparing quotes
- What preparation is included
- Whether all the old sealant comes out first
- Which colour the sealant will be
- What insurance they hold
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Check external joints each spring
- Wash walls gently around the sealant
- Leave the joints unpainted unless we have said otherwise
- Clear growth from the base of walls and joints
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.
FAQs for Adgestone
Is external mastic in a coastal place like Adgestone any different?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
I let a flat near Sandown station. Can you help?
Yes. We work for letting agents and landlords as well as householders, and several properties can be quoted together. Just ring 0345 464 0079 or email us with the address and what needs doing, and we’ll send you a clear quote.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator, the approved applicator scheme for Arbo sealants.
Where is Mr Mastic based?
We work from Crawley. We cover Adgestone and the rest of the Isle of Wight.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
How do I get a quote for external mastic in Adgestone?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
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.
Why it’s worth doing now in Adgestone
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way, and access only has to be arranged once. Older cottages and farmhouses around Adgestone can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why us?
- Every job guaranteed for a year
- Over 20 years’ experience
- We never seal over old sealant
- White, clear, grey or another colour, product permitting
Read our cost guide or what customers say.
DIY versus a professional finish
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you are 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 fails, we can still redo it.
Also near Adgestone
More services for Adgestone
External mastic in Adgestone: local notes
Adgestone is within about 2 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. With historic houses such as Morton Manor (about 0.7 miles east) nearby, there’s older building stock in the area around Adgestone as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
Letting a property close to Sandown station? Then outside joints that have cracked can let damp into a rental, so check them between lets. Homes close to Church of St. John the Evangelist include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Adgestone is about 4 miles south of Ryde, in the Isle of Wight. From the centre of Adgestone to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Adgestone is one of 125 towns and villages in the Isle of Wight we cover for external mastic. Our Portsmouth page covers work nearby.
We work across the PO36 postcode area for external mastic. You’ll find streets such as Upper Road, Lower Road and Lower Adgestone Road. Close by, we work in Morton (1 mile east), Yarbridge (1 mile east), Brading (1 mile north-east), Alverstone (1 mile south-west) and Sandown (1 mile south). We also work in nearby towns such as Newport (6 miles west), Ryde (4 miles north), Cowes (9 miles north-west), Shanklin (3 miles south), Ventnor (6 miles south) and East Cowes (8 miles north-west). For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
Near you in Adgestone
In Adgestone, that means homes and buildings near The Bay Church of England School and Sandown Bay Academy, among other places. For rail, the closest station is Sandown station, about 1.1 miles south. Other landmarks nearby include Sandown Castle (1.3 miles south-east) and Brading Waxworks (1 mile north-east). The countryside around Adgestone includes Alverstone Mead and Brading Down.
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
We also work for property managers and facilities teams in Adgestone and across the Isle of Wight. We can quote a run of properties together.