West Berkshire · England
External & façade joints in Chaddleworth, West Berkshire
Movement joints in Chaddleworth need attention? We cut out the old, prepare the joints and apply the right sealant, with a 12-month guarantee.
- Rigid filler in a joint that should flex
- Water getting into walls through failed joints
- Leaking joints around cladding and façade panels
How we handle external mastic in Chaddleworth
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. We work on façade panels, joints between brick and frames and concrete & block, and people most often call us about water getting into walls through failed joints and weathered mastic that no longer stretches.
Outside joints can only be sealed when they’re dry, so work in Chaddleworth is booked around the forecast. Tell us about access to all sides of the building, including outbuildings and garages.
You’re covered for a year from the day we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Place
- Chaddleworth (RG20)
- Region
- West Berkshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
DIY sealant or a professional job?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Ask before painting over external sealant
- Never let anyone fill a movement joint with mortar
- Keep soil, plants and ivy away from the joints
- Point out the joints to other trades
Only paint over the joint if we’ve confirmed the sealant can take paint. Many exterior sealants aren’t designed to be painted and spoil the finish.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick, all bigger jobs than a reseal.
Landlord and commercial work in Chaddleworth
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will quote.
Landlords and agents in Chaddleworth can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
What we do, step by step
The work is kept neat and contained to the area we are working on, so you can get on with your day. Expect the work to take anything from a few hours to several days, depending on the building, and we explain the cure time before we leave. Somewhere like Chaddleworth 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 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.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Keep pets and children clear of the area while we work
- Mention any leaks or damp you’ve noticed
Get a quote
We do not publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, call 0345 464 0079 or drop us an email.
Advice
External mastic in Chaddleworth: 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.
In the older streets around Church of St Andrew, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Chaddleworth is about 7 miles south of Wantage, in West Berkshire. Whether you’re in the middle of Chaddleworth or further out, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Chaddleworth is one of 155 places in West Berkshire we cover for external mastic. Our Reading page covers work nearby, about 19 miles away.
All of RG20 is covered for external mastic, from the main roads to the quietest streets. External mastic is available to properties on Main Street, Upper End and Tower Hill. Other places close to Chaddleworth include Great Shefford (2 miles south-west), East Shefford (2 miles south-west), Weston (2 miles south-west), East Garston (3 miles west) and Easton (3 miles south). Larger places within reach include Newbury (8 miles south-east), Thatcham (9 miles south-east), Speenhamland (7 miles south-east), Hungerford (8 miles south-west), Lambourn (5 miles west) and Shaw (7 miles south-east).
Near you in Chaddleworth
Open spaces near Chaddleworth include Sole Common Pond.
Common problems we fix in Chaddleworth
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
The problems people usually mention when they call are:
- Weeds or debris growing in open joints
- Movement joints with cracked, split or missing sealant
- Failed sealant between panels on a façade
- Weathered mastic that no longer stretches
For site and facilities teams at buildings such as Chaddleworth St Andrew's C.E. Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Questions to ask before you book
- What insurance they hold
- What the quote includes, VAT included or not
- How much experience the applicator has
- Whether you can choose the colour
Chaddleworth questions
Do you cover smaller places like Chaddleworth?
Yes, Chaddleworth is covered. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
What guarantee comes with external mastic in Chaddleworth?
All our work, in Chaddleworth and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
How long will you be here?
It depends on the size of the job, but most jobs take anything from a few hours to several days, depending on the building. We will give you a better idea when we quote.
Can you seal over the old sealant?
No. New silicone will not bond to old silicone, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Will you leave a mess?
We keep the work tidy. We protect what’s around the joints.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
How do you reach high-level joints?
That depends on the building and the joints. Where joints can be reached safely, we’ll do them. Give us some details and we will confirm the access.
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.
Nearby places to Chaddleworth
Other services in Chaddleworth
When something else is needed
New sealant cannot fix everything, and we’d rather say so up front. It will not solve:
- Movement that is more than a sealant joint can take
- Loose or hollow render, which needs re-rendering
- Rising or penetrating damp from elsewhere in the wall
If you are not sure, just call 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Surfaces we seal
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Façade panels
- Concrete & block
- Brickwork movement joints
How we quote for external mastic
The price is agreed before any work begins. It’s based on:
- Mould in or behind the old joints
- The old material and how stubborn it is
- Which sealant suits the joint
- When we can work, for business premises
What it costs depends on how much there is to do, 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, so you know where you stand.
What to tell us for a quote
What to tell us when you ask for a quote:
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- Access, such as stairs, a lift or height
Every job is quoted individually. Just ring 0345 464 0079 or email us with the details, and photos are welcome.