West Berkshire · England
Chieveley External Mastic
External mastic in Chieveley from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Leaking joints around cladding and façade panels
- Rigid filler in a joint that should flex
- Failed seals between different materials
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. We can quote a run of properties together.
Hotels need rooms back in use, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
External mastic in Chieveley, done properly
Failed sealant is cut out, the depth set with closed-cell backing rod, and the joint resealed with a low-modulus sealant made for outside. We pick a colour that sits well with the wall so the line blends in. If you have damp patches traced to an open external joint and moss and dirt in joints with no sealant left, we can put it right, whatever the surface.
Around Chieveley, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
Big or small, you get the same 12-month guarantee.
- Location
- Chieveley (RG20)
- Region
- West Berkshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
Outside joints around Chieveley
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. With historic houses such as Shaw House (about 3.6 miles south) nearby, there’s older building stock in the area around Chieveley as well as newer homes. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material.
In the older streets around Church of St Mary, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Schools such as Chieveley Primary School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing.
Chieveley is about 5 miles north of Newbury, in West Berkshire. If you need external mastic in Chieveley, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We cover West Berkshire from our Crawley base. 155 places in West Berkshire are on our list, from the larger towns to small villages. Our Reading page covers work nearby, about 15 miles away.
Jobs for external mastic in RG20 works the same way as everywhere else we cover. Streets in the area include High Street, East Lane and Sowbury Park, all of which we cover. Nearby, we also carry out external mastic in Downend (1 mile north), North Heath (1 mile west), World's End (2 miles north-east), Winterbourne (2 miles south-west) and Peasemore (2 miles north-west). Larger places within reach include Newbury (5 miles south), Thatcham (5 miles south-east), Burghfield Common (12 miles east), Speenhamland (4 miles south), Hungerford (9 miles west) and Calcot (12 miles east).
Near you in Chieveley
Around Chieveley, our work takes us to homes and buildings near The Wheatsheaf pub. For rail, the closest station is Newbury Racecourse station, roughly 4.5 miles south of the centre. A little further out are Donnington Castle (3.2 miles south) and West Berkshire Community Hospital (4.1 miles south). The countryside around Chieveley includes Snelsmore Common.
Why act early in Chieveley
A failed movement joint lets water into the wall. Dealing with it early keeps the repair to the joint, rather than the wall around it. Where a wall is exposed, as many are in small places like Chieveley, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
No two jobs are quite the same, so we quote each one individually. Size, access and the product the joint needs all make a difference.
Why Chieveley customers choose us
- 12-month guarantee on every job
- Anti-fungal silicone where joints get wet
- ARBOMaster approved applicator
- 20+ years of sealant experience
See how sealant jobs are priced and our reviews.
What we can’t put right
Before you book, it’s worth knowing the limits:
- Failed render or damaged cladding panels
- Cracks in the bricks or render themselves, away from the joints
- Rising or penetrating damp from elsewhere in the wall
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think before booking.
What we seal
- Concrete & block
- Brickwork movement joints
- Joints between brick and frames
- Copings & trims
- Façade panels
- Render & cladding joints
Nearby places to Chieveley
More services for Chieveley
What affects the cost of external mastic
We quote each job individually. These are the things that affect it:
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
- The number and length of the joints
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Where the property is
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- The rough size of the job
For a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
The process
The work is kept neat and contained to the joints we’re treating. The job normally takes a few hours to a few days, depending on the length of joint and the access, and we explain the cure time before we leave. For a village or hamlet like Chieveley, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any tricky access
- Tell us about any water getting in
How to get a quote
Need a quote? Please ring 0345 464 0079 or drop us an email with a few details. We’ll explain what we’d do and give you a clear price before any work starts.
Advice
What we are called out for in Chieveley
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
Look out for any of the following:
- Leaking joints around cladding and façade panels
- Sealant that has lost its bond to the brick or render
- Weathered mastic that no longer stretches
- Moss and dirt in joints with no sealant left
For landlords with property near Newbury Racecourse station, split movement joints are easy to miss on a rental until damp shows inside.
What to look for in a quote
- Are they insured?
- What the cure time is
- Which sealant they’ll use, and why
- How the joint is cleaned and prepared
Chieveley questions
Do you work for landlords with property near Newbury Racecourse station?
Yes, we work for landlords and agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Will you come out to Chieveley?
Yes, Chieveley is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Chieveley, along with the rest of our area.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Can you seal joints between render and window frames?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces with primer where required.
How long does the job take?
A typical job takes a few hours for a handful of joints, longer for a whole elevation. Your quote will say how long we expect yours to take.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you when we finish.
Do you work for hotels and businesses?
Yes. We have worked for hotels, offices and other businesses.