West Berkshire · England
External & façade joints in Winterbourne, West Berkshire
External mastic across Winterbourne and nearby, with old sealant always removed completely.
- Sealant pulling away from one side of the joint
- Movement joints with cracked, split or missing sealant
- Hard, crazed mastic that has stopped moving
Common problems we fix in Winterbourne
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. The joint cannot move, so the wall cracks somewhere else instead.
Most people get in touch after spotting something like this:
- Cracked joints where brick meets render or frames
- Joints pointed up with cement by mistake
- Weeds or debris growing in open joints
- Water getting into walls through failed joints
In the older streets around Church of St James, old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Before you book anyone
- How hidden problems are handled
- What the quote includes, VAT included or not
- What guarantee comes with the work
- When the joint can take water or movement
External mastic in Winterbourne
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. If you have sealant pulling away from one side of the joint and plants rooting in failed movement joints, we can help, whatever the surface.
Older homes in small places like Winterbourne may be stone, brick or timber-framed, often with later extensions. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Winterbourne (RG20, RG14)
- Region
- West Berkshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for external mastic
Jobs vary more than people expect. The main factors:
- The type of sealant required
- Access and height
- Whether old sealant or filler has to be cut out
- Whether there’s mould to deal with
The cost depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You’ll have a clear quote before any work starts.
What to tell us for a quote
To help us quote quickly, please include:
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
- The type of property
- The rough size of the job
Every job is quoted individually. Just ring 0345 464 0079 or drop us an email with the details and send pictures if you have them.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Loose or hollow render, which needs re-rendering
- Cutting new joints into brickwork, which is building work rather than sealant work
- Cracks in the bricks or render themselves, away from the joints
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Copings & trims
- Joints between brick and frames
Winterbourne questions
Will you come out to Winterbourne?
Yes. Winterbourne 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, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Will you leave a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
How long will you be here?
Most jobs take a few hours to a few days, depending on the length of joint and the access, including the preparation. Your quote will say how long we expect yours to take.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Where are you based?
We’re a Crawley-based firm. Our area covers South East England, London and Scotland.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Do you use backing rod?
That’s backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
How the job changes by surface
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so the movement is taken up.
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. We choose the product to suit.
The process
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes anything from a few hours to several days, depending on the building. Somewhere as small as Winterbourne, 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.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- On commercial sites, let us know about site rules
- For indoor joints, keep the area dry beforehand if you can
- Keep children and pets away from the work area
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Read more
External mastic in Winterbourne: local notes
Historic houses like Shaw House (about 2.6 miles south-east) are a reminder that the area around Winterbourne 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. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Schools such as Mary Hare School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. Rented homes near Newbury station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Winterbourne is about 3 miles north of Newbury, in West Berkshire. Wherever you are in the RG20 postcode area, we can carry out external mastic at your property. Winterbourne is one of 155 places in West Berkshire where we work. You can also see our page for Reading, about 16 miles away.
Every address in RG20 and RG14 is covered for external mastic, from the main roads to the quietest streets. We also cover the places around Winterbourne: North Heath (2 miles north), Boxford (2 miles west), Chieveley (2 miles north-east), Donnington (2 miles south) and Downend (2 miles north-east). Further out, we also cover Newbury (3 miles south), Thatcham (5 miles south-east), Burghfield Common (13 miles east), Speenhamland (3 miles south), Hungerford (8 miles west) and Calcot (13 miles east).
Near you in Winterbourne
In Winterbourne, that means homes and buildings near Trinity School. For rail, the closest station is Newbury station, about 3.4 miles south. Other landmarks nearby include British Balloon Museum & Library Ltd (3.1 miles south) and West Berkshire Community Hospital (3.6 miles south-east). The countryside around Winterbourne includes Snelsmore Common.
Also near Winterbourne
What else we do in Winterbourne
Leave it or put it right?
Pointing a movement joint with mortar might seem a neat fix, but it locks the joint solid. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. In a small place like Winterbourne, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please phone 0345 464 0079 or drop us an email and we will talk you through it.
Why choose Mr Mastic in Winterbourne
- Over 20 years’ experience
- Anti-fungal silicone where joints get wet
- Experience in homes, commercial sites and hotels
- Colour agreed with you before we start
Take a look at what affects the cost and what customers say.