West Berkshire · England
External & façade joints in Wash Water, West Berkshire
External mastic across Wash Water and nearby, with old sealant always removed completely and a 12-month guarantee.
- Movement joints with cracked, split or missing sealant
- Movement joints filled with mortar instead of sealant
- Plants rooting in failed movement joints
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
External mastic for homes and businesses in Wash Water
Movement joints let brickwork, render and cladding expand and shrink without cracking. Its sealant has to flex with the building, season after season, so once it splits or hardens, the joint stops working and water gets in. If you’re dealing with weathered mastic that no longer stretches and joints with sealant missing in places, we can help, on copings & trims, joints between brick and frames and concrete & block alike.
Outside joints can only be sealed when they’re dry, so work in Wash Water is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Wash Water (RG20)
- Wider area
- West Berkshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
How it works
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes anything from a few hours to several days, depending on the building. Somewhere as small as Wash Water, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- We fit closed-cell backing rod to control the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
Get a quote
Need a quote? Please call 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear quote before work begins.
Read more
Surface by surface
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant.
Render joints
The face of render can be soft, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Landlords, agents and businesses in Wash Water
We also work for property managers and facilities teams. We can quote a run of properties together.
In hotels, rooms out of use cost money, so we plan the work room by room. Hotel work is part of what we do, alongside homes and businesses.
Leave it or put it right?
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner. Around Wash Water, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why book with us
- ARBOMaster approved applicator
- Tidy, careful work
- 20+ years of sealant experience
- 12-month guarantee on every job
Take a look at what affects the cost and customer reviews.
When something else is needed
We will not take on work that won’t last, so here’s what sealant cannot put right:
- Cracks in the bricks or render themselves, away from the joints
- Damp that isn’t coming from the joint
- Walls that need new movement joints cut into them
If you are not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Façade panels
- Render & cladding joints
- Concrete & block
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
Towns and villages near Wash Water
More services for Wash Water
Wash Water: your questions answered
Will you come out to Wash Water?
Yes. Wash Water is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you work for landlords with property near Newbury station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Can you seal joints between render and window frames?
Yes. Where different materials meet is one of the most common joints we seal. The sealant is chosen to bond to both sides with primer where required.
What colours does the sealant come in?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We pick the one that suits your wall best so the joint does not draw the eye.
Where do you work from?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Do the sealants smell?
Possibly a little. It fades as the sealant cures.
Can you work on commercial sites?
Yes. We have worked for hotels, offices and other businesses and we’re fully insured.
Can new sealant go over the old?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
External mastic in Wash Water: local notes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. With historic houses such as Highclere Castle (about 2.7 miles south) nearby, there’s older building stock in the area around Wash Water as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
In the older streets around St Luke Church, the joints between older walls, newer extensions and the roofline need a sealant that can move. If you let a flat or house near Newbury station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you look after a building such as Horris Hill School, its movement joints, gutters and trims need looking after like any other building’s.
Wash Water is about 3 miles south-west of Newbury, in West Berkshire. For external mastic in and around Wash Water, it’s easy to get a quote: please phone 0345 464 0079 or send us an email. We cover West Berkshire from our Crawley base, Wash Water included. Across West Berkshire, we cover 155 places, and Wash Water is one of them. Our Reading page covers work nearby.
Postcode districts we cover here for external mastic: RG20. Whether your property is on Penwood Road and Andover Road or a nearby road, our applicators can take on the job. Neighbouring places we cover for external mastic include Enborne Row (1 mile north-west), Wash Common (1 mile north-east), Newtown Common (1 mile east), Penwood (1 mile south-west) and Woolton Hill (1 mile south-west). Further out, we also cover Newbury (3 miles north-east), Thatcham (5 miles north-east), Burghfield Common (13 miles east), Speenhamland (3 miles north), Hungerford (8 miles north-west) and Calcot (14 miles east).
Landmarks near Wash Water
Typical jobs here are in homes near Park House School, Falkland Primary School and The Woodpecker pub. The closest station to Wash Water is Newbury station, roughly 2.5 miles north-east of the centre. Nearby you will also find British Balloon Museum & Library Ltd (2.8 miles north-east) and Hamstead Marshall 2 (2.9 miles north-west). For a walk, there’s Sidown Hill and Audrey's Meadow.
Quotes for external mastic in Wash Water
The quote reflects the job in front of us. We look at:
- Any mould that needs treating
- The old material and how stubborn it is
- How many rooms, windows or areas are involved
- Any working-time requirements on site
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Asking for a quote
Before you ask for a quote, have a think about:
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To arrange one, call 0345 464 0079 or send us an email.