Isle of Wight · England
Gatcombe External Mastic
Movement joints in Gatcombe need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Brick movement joints where the sealant has split
- Water getting into walls through failed joints
- Moss and dirt in joints with no sealant left
How we handle external mastic in Gatcombe
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where mortar or filler would crack. If you’re dealing with movement joints with cracked, split or missing sealant and plants rooting in failed movement joints, we can put it right, whatever the surface.
Older homes in small places like Gatcombe may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Where
- Gatcombe (PO30)
- Wider area
- Isle of Wight
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What affects the cost of external mastic
The quote reflects the job in front of us. We take into account:
- The number and length of the joints
- Whether there’s mould to deal with
- Which sealant suits the joint
- Whether the work is at height
The cost depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
Asking for a quote
What to tell us when you ask for a quote:
- Where the property is
- Any previous sealing or DIY work
- Whether it’s a home or a business
- A few pictures by email, if you can
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that is easy.
Towns and villages near Gatcombe
Also in Gatcombe
Keeping the joints in good condition
No joint lasts for ever, but care makes a real difference. A few tips:
- Walk round the building once a year and look at the joints
- Avoid pressure-washing directly into sealant joints
- Ask before painting over external sealant
- Do not let climbing plants root in the sealant
Do not paint over the new sealant unless we have said the product is paintable. Many exterior sealants aren’t designed to be painted and spoil the finish.
Once a joint can’t move, the wall finds another way, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
Leave it or put it right?
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. Around Gatcombe, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Every job is a little different, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all play a part.
What you get with us
- Tidy, careful work
- Homes, businesses and hotels
- Full insurance on every job
- Quality sealants from Arbo and Everbuild
Take a look at what affects the cost and our reviews.
How the job changes by surface
Render joints
Water behind render can lead to blown patches. A sound joint keeps the render dry behind.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. A flexible sealant bridges the two so the movement is taken up.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours to a few days, depending on the length of joint and the access, and the area is left clean. Somewhere as small as Gatcombe, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- On commercial sites, let us know about site rules
- Keep children and pets away from the work area
- Tell us about any previous sealing or DIY attempts
How to get a quote
For external mastic in Gatcombe, phone 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Related advice
Questions from Gatcombe
Will you come out to Gatcombe?
Yes. Gatcombe is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Gatcombe for external mastic?
Yes. Our work covers London and the South East, and Gatcombe is part of that. You can call 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear price.
Do you have insurance?
Yes. We are fully insured, and we can confirm the details when we quote.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
When is the sealant fully cured?
Cure times vary by product. Before we leave, we will tell you the cure time.
Do you work for landlords and businesses?
Yes, regularly. We can quote for several properties at once.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
What colours does the sealant come in?
The aim is a neat, even joint in a colour that suits the wall. We’ll talk through colour options before we start from the range available.
Landlords, agents and businesses in Gatcombe
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
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.
Outside joints around Gatcombe
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. With historic houses such as Gatcombe House (about 0.2 miles south-east) nearby, there’s older building stock in the area around Gatcombe as well as newer homes. In older buildings, 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, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to St. Olave's Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Gatcombe is about 2 miles south of Newport, in the Isle of Wight. Every kind of property in Gatcombe can book us for external mastic. Every job comes with our 12-month guarantee. Our the Isle of Wight coverage runs to 125 places, and Gatcombe is one of them. Our Portsmouth page covers work nearby (14 miles or so).
All of PO30 is covered for external mastic, from the main roads to the quietest streets. Streets in the area include Gatcombe Road, Rectory Lane and Newbarn Lane, all of which we cover. Close by, we work in Chillerton (1 mile south), Plaish (2 miles north-west), Clatterford (2 miles north), Bowcombe (2 miles north-west) and Carisbrooke (2 miles north). Within a short drive, we also cover Ryde (8 miles north-east), Cowes (6 miles north), Sandown (6 miles east), Shanklin (6 miles east), Ventnor (6 miles south-east) and East Cowes (6 miles north). Island and remote addresses take a little more planning, so please mention your location when you call 0345 464 0079 or send us an email.
Landmarks near Gatcombe
Locally, jobs take us to homes and businesses close to Christ The King College, among other places. Well-known places in the area include Carisbrooke Castle (1.6 miles north) and Isle of Wight Music Museum (2.5 miles north). The countryside around Gatcombe includes Briddlesford Nature Reserve and Brighstone Down.