Hampshire · England
Chalton External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Chalton and across Hampshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Weathered mastic that no longer stretches
- Weeds or debris growing in open joints
- Rain getting behind render or cladding at a joint
External mastic in Chalton, done properly
For buildings in Chalton, we reseal external joints of all kinds, from brick movement joints to cladding panels. Every joint gets the same careful preparation: clean, sound faces and a controlled depth. If you have moss and dirt in joints with no sealant left and failed sealant between panels on a façade, we can help, whatever the surface.
Somewhere as small as Chalton, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
All of our work is guaranteed for twelve months.
- Place
- Chalton (PO8)
- Region
- Hampshire
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Honest limits
A few problems are outside what sealant work can do:
- Render that is blown, hollow or coming away
- Cracking across the wall rather than at a joint
- Damp that isn’t coming from the joint
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Façade panels
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
- Render & cladding joints
- Concrete & block
Landlord and commercial work in Chalton
We also work for property managers and facilities teams in Chalton and across Hampshire. We can quote a run of properties together, and we are fully insured.
If you manage several properties in or around Chalton, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs.
Why act early in Chalton
Resealing a run of joints in one go is normally better than patching one at a time. They’ve weathered the same way, and access only has to be arranged once. In a small place like Chalton, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What it costs depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Why us?
- Anti-fungal silicone where joints get wet
- 4.9 on Google from 180+ five-star reviews
- We are fully insured
- ARBOMaster approved applicator
Read our cost guide or our reviews.
Chalton questions
Can you help a landlord with a rental near Rowlands Castle station?
Yes, we work for landlords and agents. Just call 0345 464 0079 or drop us an email and tell us about the property, and we’ll give you a clear quote.
Will you come out to Chalton?
Yes, Chalton is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
How do I get a quote for external mastic in Chalton?
Every job is different, so each one gets its own quote. To get one, ring 0345 464 0079 or drop us an email and tell us what needs doing and where.
How long does external mastic last?
That varies with the weather the wall faces, how much it moves and the sealant used. Treat it as a maintenance item and look at it yearly and renew it when it starts to fail.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Can you seal over the old sealant?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we will quote it together.
Is there any odour?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
Do you need external mastic in Chalton?
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
The problems people generally mention when they call are:
- Rain getting behind render or cladding at a joint
- Gaps where render, brick and frames meet
- Movement joints filled with mortar instead of sealant
- Panel joints letting water in
Rented homes near Rowlands Castle station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- How the colour is chosen
- Whether VAT is included
- Who does the work, and how experienced they are
- What insurance they hold
Chalton buildings and the weather
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Uppark (about 3.2 miles east) nearby, there’s older building stock in the area around Chalton as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth.
Homes close to Church of St Michael include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Chalton is about 3 miles north-east of Horndean, in Hampshire. If you need external mastic in Chalton, please ring 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Hampshire. Our Hampshire coverage runs to 683 places, and Chalton is one of them. We also work in Portsmouth, around 10 miles away.
Postcode districts we cover here for external mastic: PO8. If you are just outside Chalton, we cover Blendworth (2 miles south-west), Buriton (3 miles north), Forestside (3 miles south-east), West Marden (3 miles south-east) and Weston (4 miles north). Further out, we also cover Gosport (12 miles south-west), Havant (5 miles south), Fareham (12 miles south-west), Horndean (3 miles south-west), Alton (15 miles north) and Hedge End (15 miles west).
What’s near Chalton
Around Chalton, our work takes us to homes and buildings near Ditcham Park and the streets around them. Chalton’s nearest station is Rowlands Castle station, roughly 3.1 miles south. Nearby you will also find Clanfield Earthwork (1.2 miles north-west) and Petersfield Community Hospital (4.7 miles north). The countryside around Chalton includes Windmill Hill.
Places near Chalton
What else we do in Chalton
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes anything from a few hours to several days, depending on the building, and the area is left clean. Somewhere as small as Chalton, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- We cut out the failed sealant and rake out any dirt or growth.
- The joint faces are cleaned and primed where the sealant needs 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
- Keep children and pets away from the work area
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
Ask for a quote
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or drop us an email and describe the job and send pictures if you have them.
Advice
Quotes for external mastic in Chalton
Every job gets its own quote. These are the things that affect it:
- Whether there’s mould to deal with
- The product the joint needs
- Access and height
- Whether old sealant or filler has to be cut out
We don’t show prices on the website, because the cost depends so much on the job itself. For a quick quote, please call 0345 464 0079 or email us.
Helping us quote
Before you ask for a quote, have a think about:
- What the problem is, such as mould, gaps, leaks or cracking
- Any previous sealing or DIY work
- How many joints, rooms or windows are involved
- How we’d reach the joints
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, phone 0345 464 0079 or drop us an email.
Can I do it myself?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.