Isle of Wight · England
Chillerton External Mastic
External mastic for Chillerton, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Old sealant gone brittle and cracked
- Failed seals between different materials
- Brick movement joints where the sealant has split
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
External mastic in Chillerton, done properly
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the line blends in. We work on brickwork movement joints, copings & trims and joints between brick and frames, and people most often call us about movement joints with cracked, split or missing sealant and water getting into walls through failed joints.
In a village or hamlet like Chillerton, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Gutter joints and wall joints there need a sealant that can flex and stay put.
All our work comes with our 12-month guarantee, wherever you are in the Isle of Wight.
- Where
- Chillerton (PO30)
- Wider area
- Isle of Wight
- Cover
- One year on every job
- Quote
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
What the job involves on each surface
Joints between dissimilar materials
Different materials may need different primers. Both surfaces are cleaned and primed as the product requires.
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. We prime where the product needs it.
Quotes for external mastic in Chillerton
We quote each job individually. These are the things that affect it:
- Whether old sealant or filler has to be cut out
- How easy the joints are to reach
- Mould in or behind the old joints
- How many areas need sealing
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or send us an email.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- A few photos by email, if you can
- Roughly how big the job is
- Where the job is, and your postcode
- Any access issues, like height or stairs
Asking for a quote is easy: let us know the job and the location. Photos by email help us understand the job, and we will take it from there.
Chillerton buildings and the weather
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Sheat Manor (about 0.6 miles north-east) are a reminder that the area around Chillerton has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
If you look after a building such as Chillerton and Rookley Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Chillerton is about 3 miles south of Newport, in the Isle of Wight. Chillerton gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. 125 places in the Isle of Wight are on our list, from the larger towns to small villages. We also work in Portsmouth, around 15 miles away.
Every address in PO30 is within our area for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Hollow Lane, Greenland Close and Brook Lane or anywhere close by, our applicators can take on the job. We also cover the places around Chillerton: Gatcombe (1 mile north), Shorwell (2 miles west), Bowcombe (2 miles north-west), Plaish (2 miles north) and Chale Green (2 miles south). Further out, we also cover Newport (3 miles north), Ryde (8 miles north-east), Cowes (7 miles north), Sandown (7 miles east), Shanklin (6 miles east) and Ventnor (6 miles south-east). Remote and island addresses need a little more planning, so please mention your location when you ring 0345 464 0079 or drop us an email.
What’s near Chillerton
Other landmarks nearby include Whitecroft Hospital (1.5 miles north) and Carisbrooke Castle (2.5 miles north). Green spaces nearby include Brighstone Down.
Honest limits
To be straight with you, some problems need a different trade:
- Cracked brickwork or render that needs a builder or plasterer
- Movement that is more than a sealant joint can take
- Render that’s blown, hollow or coming away
If you’re not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Surfaces we seal
- Brickwork movement joints
- Façade panels
- Copings & trims
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
What happens on the day
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a handful of joints, longer for a whole elevation for a typical job. Somewhere like Chillerton needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided 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.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Tell us about any previous sealing or DIY attempts
- Where the joints are inside, avoid wetting them before we arrive
- Tell us if parking is tricky
How to get a quote
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before work begins.
Read more
Also near Chillerton
Other services in Chillerton
What we are called out for in Chillerton
Poor preparation causes many early failures: joint faces that were dusty or damp, unprimed where they needed it, or still carrying old sealant. The new sealant then lets go long before it should.
Look out for these signs:
- Hard, crazed mastic that has stopped moving
- Leaking joints around cladding and façade panels
- Gaps where render, brick and frames meet
- Rain getting behind render or cladding at a joint
Homes close to St. Olave's Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
Before you book anyone
- Whether you can choose the colour
- When the joint can take water or movement
- Whether VAT is included
- Whether the sealant suits the joint
Common questions in Chillerton
Can you do external mastic in Chillerton?
Yes, Chillerton is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or email us with a few details of the job, and we’ll give you a clear quote.
Is Chillerton within the area you cover?
Yes. Chillerton is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you guarantee your work?
Yes, always. Each job is guaranteed for twelve months, wherever you are.
Can landlords and businesses book you?
Yes, regularly. Several properties can be quoted together, and between tenancies is a good time for the work.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Can you do several jobs on one visit?
Of course. Combining jobs makes good use of the visit, so mention them when you ask for a quote.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Can you seal joints between two different materials?
Yes. The old joint is removed, both surfaces cleaned and primed where needed, and a flexible sealant applied. The colour is chosen to suit.
How to look after the new joints
A little care helps the new joints last. Our advice:
- Leave the joints unpainted unless we have said otherwise
- Make sure movement joints are not pointed over
- Show decorators and builders where the movement joints are
- Look over the joints every year, ideally after winter
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years so early resealing is worth it.