West Berkshire · England
External & façade joints in Weston, West Berkshire
External mastic for Weston and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Movement joints filled with mortar instead of sealant
- Rain getting behind render or cladding at a joint
- Joints with sealant missing in places
External mastic in Weston
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. If you are dealing with movement joints filled with mortar instead of sealant and hard, crazed mastic that has stopped moving, we can help, on render & cladding joints, brickwork movement joints and joints between brick and frames alike.
Older homes in small places like Weston may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water normally gets in.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Weston (RG20)
- Region
- West Berkshire
- Cover
- One year on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Landlords, agents and businesses in Weston
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
Leave it or put it right?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That matters on brick, render and concrete, which can be weaker at the face. A stiffer product can damage the joint edge as it fails. Where a wall is exposed, as many are in small places like Weston, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and give you a clear price before we start.
Why choose Mr Mastic in Weston
- Experience in homes, commercial sites and hotels
- White, clear, grey or another colour, product permitting
- Anti-fungal silicone where joints get wet
- Trusted Arbo and Everbuild sealants
Read what affects the cost or our reviews.
Can I do it myself?
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.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Do you need external mastic in Weston?
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
These are the problems we’re asked about most:
- Rigid filler in a joint that should flex
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
- Cracked joints where brick meets render or frames
Homes close to St Thomas' Church include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Comparing quotes
- How long the guarantee is
- Is VAT in the price?
- Whether you can choose the colour
- How the surfaces are prepared before sealing
Looking after it afterwards
Looking after new joints is easy, and it makes a real difference:
- Fix overflowing gutters above sealed joints
- Tell anyone working on the walls about the movement joints
- Make sure movement joints aren’t pointed over
- Do not let climbing plants root in the sealant
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
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 it’s worth resealing at the first signs.
The process
There is not much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes a few hours for a handful of joints, longer for a whole elevation. For a village or hamlet like Weston, 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 start by checking each joint, agreeing the ones to redo and how we will reach them.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Tell us about any previous sealing or DIY attempts
- Tell us about any water getting in
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job.
Read more
Weston buildings and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Benham Park (about 4.7 miles south-east) are a reminder that the area around Weston has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
For landlords with property near Kintbury station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Weston is about 6 miles north-west of Newbury, in West Berkshire. Wherever you are in the RG20 postcode area, our applicators can take on external mastic. Our area takes in 155 places across West Berkshire, large and small. There’s also a page for Reading, about 19 miles away.
Every address in RG20 is covered for external mastic, from the main roads to the quietest streets. We also cover the places around Weston: East Shefford (1 mile north-west), Great Shefford (1 mile north-west), Wickham (1 mile south), Easton (2 miles south-east) and Shefford Woodlands (2 miles west). Within a short drive, we also cover Newbury (6 miles south-east), Thatcham (8 miles south-east), Speenhamland (6 miles south-east), Hungerford (5 miles south-west), Lambourn (5 miles north-west) and Shaw (6 miles south-east).
Around Weston
The closest station to Weston is Kintbury station, roughly 4.3 miles south of the centre. A little further out are Hamstead Marshall 3 (4.7 miles south). Green spaces nearby include Sole Common Pond.
Weston: your questions answered
Do you work for landlords with property near Kintbury station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before we start.
Can you do external mastic in Weston?
Yes, Weston is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Are you ARBOMaster approved?
Yes. We are an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Do you work at height?
It depends on the building. Send us photos and a rough idea of the height and we’ll confirm how they can be reached safely.
How long should I leave it?
That depends on the sealant used, so please follow the time we give you when we finish.
How long does external mastic last?
It varies with how exposed the wall is and how much the joint moves. Look for splits, hardening or edges coming away, and reseal at that point.
Do I have to be there?
Access is agreed with you when the job is booked. Indoors, that usually means someone at home.
Also in Weston
Honest limits
Honest advice matters more to us than a booking, so here’s what sealant can’t fix:
- Render that’s blown, hollow or coming away
- Walls that need new movement joints cut into them
- Structural movement, which needs a surveyor or engineer
If you are not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Façade panels
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Joints between brick and frames