Hampshire · England
External & façade joints in Charlwood, Hampshire
Movement joints in Charlwood need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Movement joints with cracked, split or missing sealant
- Joints where the bead has come unstuck
- Old sealant gone brittle and cracked
External mastic in Charlwood, done properly
Low-level joints can usually be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we will confirm what’s needed to reach them safely. We work on concrete & block, joints between brick and frames and façade panels, and people most often call us about sealant that has lost its bond to the brick or render and failed seals between different materials.
In a village or hamlet like Charlwood, older cottages and farm buildings often stand in the open, so walls and rooflines take the full force of wind and rain. Gutter joints and wall joints there need a sealant that can flex and stay put.
You’re covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or email us.
- Location
- Charlwood (SO24)
- Region
- Hampshire
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Charlwood questions
Is there a guarantee on external mastic in Charlwood?
Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
Can you do external mastic in Charlwood?
Yes, Charlwood is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Do you seal joints where cladding meets other materials?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides, primed where needed.
Will the new joint stand out?
The sealant colour is picked to suit the wall. Exterior sealants come in a good range of colours.
What is a movement joint?
A vertical gap in a long brick wall is usually a movement joint. It lets the bricks expand without cracking.
When is the sealant fully cured?
It depends on the product. Before we leave, we’ll tell you the cure time.
How it works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to several days, depending on the building, and the area is left clean. For a village or hamlet like Charlwood, 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.
- We look at every joint and agree a colour to suit the wall.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- On commercial sites, let us know about site rules
- Mention if the joints have been sealed before
- Clear the area around the work
Getting a quote
We quote each job on its own, so start by telling us what you need. Simply call 0345 464 0079 or email us and describe the job, and photos are welcome.
Advice
Also near Charlwood
What else we do in Charlwood
Aftercare tips
So the new joints stay in good condition:
- Ask before painting over external sealant
- Keep movement joints as flexible joints, not mortar
- Check external joints each spring
- Keep soil, plants and ivy away from the joints
Keep pressure washers away from the sealant. High-pressure water can lift the edges.
Leaks behind façade panels and render often go unseen. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
External mastic in Charlwood: local notes
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 Bentworth Hall (about 4.8 miles north) nearby, there’s older building stock in the area around Charlwood as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
In and around Charlwood, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. For an older house near a landmark such as Monkwood Mission Church, the joints between older walls, newer extensions and the roofline need a sealant that can move.
Charlwood is about 6 miles south-west of Alton, in Hampshire. Jobs in Charlwood get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Across Hampshire, we cover 683 places, and Charlwood is one of them. For nearby work, see our Southampton page (19 miles or so).
Every address in SO24 is covered for external mastic, from the main roads to the quietest streets. If you are just outside Charlwood, we cover Monkwood (1 mile south-west), Kitwood (1 mile north-west), Gilbert Street (1 mile north-west), Ropley (2 miles west) and West Tisted (2 miles south-west). Further out, we also cover Basingstoke (13 miles north), Winchester (12 miles west), Havant (15 miles south), Eastleigh (15 miles south-west), Horndean (12 miles south) and Alton (6 miles north-east).
Around Charlwood
Nearby you’ll also find Alton Community Hospital (4.7 miles north-east). Open spaces near Charlwood include Red Hill and Shutts Copse.
What we cannot put right
Before you book, it’s worth knowing the limits:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Structural movement, which needs a surveyor or engineer
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before you book.
What we seal
- Façade panels
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Render & cladding joints
Surface by surface
Render joints
Cracks along render joints let water in behind the coat. Resealing the joints early keeps water out and protects the render itself.
Joints between dissimilar materials
Wherever two materials meet, they move differently. A flexible sealant bridges the two so the movement is taken up.
What affects the quote in Charlwood
The price is agreed before any work begins. It takes into account:
- How many areas need sealing
- Whether the work is at height
- The product the joint needs
- Working hours on commercial sites
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Asking for a quote
There’s no need for technical detail. It helps if you can tell us:
- The type of property
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
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.
What happens if it’s left?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. Around Charlwood, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
The cost depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before we start.
What you get with us
- A sealant colour to suit the surroundings
- Anti-fungal silicone where joints get wet
- A choice of colours where the product allows
- 20+ years of sealant experience
Read what affects the cost or customer reviews.
Can I do it myself?
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.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.