West Berkshire · England
Ashmore Green External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Ashmore Green, backed by a one-year guarantee. Call for a quick quote.
- Rain getting behind render or cladding at a joint
- Joints pointed up with cement by mistake
- Joints where the bead has come unstuck
External mastic in Ashmore Green
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where mortar or filler would crack. Typical jobs include joints pointed up with cement by mistake and gaps where render, brick and frames meet, on render & cladding joints, concrete & block and brickwork movement joints.
Around Ashmore Green, 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.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Location
- Ashmore Green (RG18)
- Region
- West Berkshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours to a few days, depending on the length of joint and the access. Somewhere as small as Ashmore Green, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires 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
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we are working on
Get a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.
Read more
How the job changes by surface
Copings and trims
A failed coping joint lets water into the top of the wall. Sealing them early saves the wall below.
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind and protects the render itself.
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Render that’s blown, hollow or coming away
- Damp that is not coming from the joint
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can ring 0345 464 0079 or send us an email and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Concrete & block
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Façade panels
Landlords, agents and businesses in Ashmore Green
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
If you manage several properties in or around Ashmore Green, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
Keeping the joints in good condition
So the new joints stay in good condition:
- Show decorators and builders where the movement joints are
- Walk round the building once a year and look at the joints
- Deal with leaking gutters that soak the joints below
- Do not let climbing plants root in the sealant
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Small splits are the time to act. At that stage it’s a simple cut out and reseal before water has had years to get in.
External mastic in Ashmore Green: local notes
Historic houses like Shaw House (about 2 miles west) are a reminder that the area around Ashmore Green has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Homes close to St. Mark's Church include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain. For landlords with property near Newbury Racecourse station, outside joints that have cracked can let damp into a rental, so check them between lets. Schools such as Cold Ash St Mark's C.E. School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Ashmore Green is about 2 miles north-west of Thatcham, in West Berkshire. From the centre of Ashmore Green to the outskirts, we cover external mastic for every kind of property. Ashmore Green is one of 155 towns and villages in West Berkshire we cover. For nearby work, see our Reading page, about 13 miles away.
Jobs for external mastic in RG18 works the same way as everywhere else we cover. Streets in the area include Ash Terrace, Ashmore Green Road and Stoney Lane, and we cover them all. Nearby, we also carry out external mastic in Cold Ash (1 mile north-east), Stone Copse (1 mile west), Benham Hill (1 mile south-west), Thatcham (2 miles south-east) and Longlane (2 miles north). Larger places within reach include Newbury (3 miles south-west), Burghfield Common (9 miles east), Hungerford (11 miles west), Spencers Wood (13 miles east), Calcot (10 miles east) and Lambourn (12 miles north-west).
What’s near Ashmore Green
Locally, jobs take us to homes and businesses close to Kennet School. The nearest railway station is Newbury Racecourse station, about 2.2 miles south-west. Nearby you will also find West Berkshire Community Hospital (1.4 miles south-west) and Donnington Castle (2.8 miles west). Open spaces near Ashmore Green include Nature Discovery Centre.
Common questions in Ashmore Green
Do you cover smaller places like Ashmore Green?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you do external mastic in Ashmore Green?
Yes. Our work covers London and the South East, and Ashmore Green is part of that. You can ring 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
How often do external joints need resealing?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Every job carries our one-year guarantee.
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, primed where needed.
Is it messy?
Very little: the area around the joints is protected first, and we clear up the old sealant and our materials before we leave.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Why act early in Ashmore Green
Water gets in through a failed movement joint and can run behind render or cladding. Resealing early keeps the job to the joint itself, rather than the wall around it. In a small place like Ashmore Green, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
What you pay reflects the work, not a rough estimate. That is why we ask about the job first and agree the price before starting.
Why Ashmore Green clients choose us
- An ARBOMaster approved applicator
- 4.9 on Google from 180+ five-star reviews
- Every job guaranteed for a year
- Old sealant always removed completely
Read what affects the cost and what customers say.
Should I try it myself first?
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.