Oxfordshire · England
External & façade joints in Ashampstead Green, Oxfordshire
Sealing brickwork movement joints, render, cladding and façade joints in Ashampstead Green, with a 12-month guarantee on every job. Ask us for a quote.
- Movement joints with cracked, split or missing sealant
- Gaps where render, brick and frames meet
- Sealant that has lost its bond to the brick or render
How we quote for external mastic
The quote reflects the job in front of us. We look at:
- The product the joint needs
- The number of rooms or windows
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Helping us quote
What to tell us when you ask for a quote:
- If someone has resealed it before
- A few photos by email, if you can
- Roughly how big the job is
- The type of property
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
External mastic for homes and businesses in Ashampstead Green
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. We work on façade panels, brickwork movement joints and concrete & block, and common reasons people get in touch are weathered mastic that no longer stretches and damp patches traced to an open external joint.
Around Ashampstead Green, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
You’re covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or drop us an email.
- Place
- Ashampstead Green (RG8)
- Wider area
- Oxfordshire
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlords, agents and businesses in Ashampstead Green
Landlords and agents in Ashampstead Green can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What sealant work can’t fix
In fairness, some problems need a different trade:
- Loose or hollow render, which needs re-rendering
- Adding movement joints to masonry that has none
- Movement that’s more than a sealant joint can take
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly before booking.
What we seal
- Render & cladding joints
- Joints between brick and frames
- Concrete & block
- Brickwork movement joints
- Façade panels
- Copings & trims
Looking after it afterwards
To keep the joints looking good and working properly:
- Fix overflowing gutters above sealed joints
- Have failed joints looked at early
- Tell anyone working on the walls about the movement joints
- Check the sealant is paintable before painting near it
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
Act while the splits are small. At that stage it’s a simple cut out and reseal.
FAQs for Ashampstead Green
Can you do external mastic in Ashampstead Green?
Yes, Ashampstead Green is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Can you help a landlord with a rental near Goring & Streatley station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can phone 0345 464 0079 or send us an email with the details for a clear quote.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and you will get one quote.
When is the sealant fully cured?
Different products cure at different speeds, so please follow the time we give you when we finish.
What’s an expansion joint in brickwork?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
What happens if it’s left?
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. Around Ashampstead Green, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Some things make a job bigger or smaller: 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 choose Mr Mastic in Ashampstead Green
- A 12-month guarantee on all work
- Sealant colour chosen to suit
- Homes, businesses and hotels
- We leave the area clean and tidy
Take a look at our cost guide and what customers say.
Can I do it myself?
If you do try it yourself, take your time over the 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.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Outside joints around Ashampstead Green
With historic houses such as Basildon Park (about 2.9 miles east) nearby, there’s older building stock in the area around Ashampstead Green as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Letting a property close to Goring & Streatley station? Then outside joints that have cracked can let damp into a rental, so check them between lets. If you live in an older home near Church of St Clement, an extension built onto an older house moves differently, and the joint between them takes the strain.
Ashampstead Green is about 7 miles north-east of Thatcham, in Oxfordshire. Homes, rented property, offices and hotels in Ashampstead Green can book us for external mastic, old or new, large or small. The work is guaranteed for a year. Our area takes in 443 places across Oxfordshire, large and small. Our Reading page covers work nearby.
All of RG8 is within our area for external mastic, from the main roads to the quietest streets. Neighbouring places we cover for external mastic include Ashampstead (1 mile south), Stubbles (1 mile south-east), Burnt Hill (2 miles south), Upper Basildon (2 miles east) and New Town (3 miles east). Larger places within reach include Didcot (9 miles north), Abingdon-on-Thames (13 miles north), Wantage (12 miles north-west), Henley-on-Thames (12 miles east), Grove (13 miles north-west) and Benson (10 miles north).
What’s near Ashampstead Green
The nearest railway station is Goring & Streatley station, roughly 3.1 miles north-east. Nearby you will also find Yattendon Castle (1.8 miles south-west). Green spaces nearby include Hartslock.
Nearby places to Ashampstead Green
Also in Ashampstead Green
How the visit works
We keep the work tidy and contained to the joints we’re treating. Expect the work to take a few hours for a handful of joints, longer for a whole elevation. In a small place like Ashampstead Green, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
- Tell us about access, such as stairs, a lift or high-level joints
Get a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job.