Oxfordshire · England
External & façade joints in Aston, Oxfordshire
We cover Aston for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Failed seals between different materials
- Old sealant gone brittle and cracked
- Sealant that has lost its bond to the brick or render
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we’ll get on with it. The work itself takes a few hours to a few days, depending on the length of joint and the access, including the tidy-up. Somewhere as small as Aston, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Preparing for the visit
- Mention if the joints have been sealed before
- Try not to wet indoor joints just before the visit
- Let us know if you’ve seen damp or leaks
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Advice
External mastic in Aston
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. The colour is chosen to suit the brick or render so the joint doesn’t stand out. We work on joints between brick and frames, brickwork movement joints and render & cladding joints, and common reasons people get in touch are failed sealant between panels on a façade and joints where the bead has come unstuck.
External sealant needs dry, clean surfaces, so work around Aston is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
All our work comes with a 12-month guarantee, wherever you are in Oxfordshire.
- Location
- Aston (RG9)
- Wider area
- Oxfordshire
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about external mastic in Aston
Do you cover smaller places like Aston?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you work for landlords with property near Henley-On-Thames station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or email us with the details for a clear quote.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected.
Why is there a gap in my brick wall?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Can you seal over the old sealant?
No. The old sealant always comes out first.
Do the sealants smell?
Sometimes, a little. It fades as the sealant cures.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Surface by surface
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. The sealant is chosen with that in mind.
Concrete and blockwork
Blockwork and concrete shrink over time and move with the seasons. Their movement joints are sealed over backing rod with a flexible sealant.
When it isn’t the sealant
New sealant can’t fix everything, and we will tell you before we start. It won’t solve:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Loose or hollow render, which needs re-rendering
- Cracks in the bricks or render themselves, away from the joints
If in doubt, phone 0345 464 0079 or email us and we will say what we think.
Surfaces we seal
- Joints between brick and frames
- Copings & trims
- Façade panels
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
Quotes for external mastic in Aston
You will get a clear quote before any work starts. It takes into account:
- Working hours on commercial sites
- Which sealant suits the joint
- Whether the work is at height
- How many areas need sealing
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Helping us quote
You do not need to know the technical terms. Just tell us:
- The type of property
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
We quote each job on its own, so the first step is telling us about yours. Just phone 0345 464 0079 or send us an email with the details and send pictures if you have them.
Can I do it myself?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Looking after it afterwards
After the cure time, these simple habits help:
- Walk round the building once a year and look at the joints
- Keep soil, plants and ivy away from the joints
- Show decorators and builders where the movement joints are
- Wash walls gently around the sealant
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Small splits are the time to act. At that stage it’s a simple cut out and reseal.
Why it’s worth doing now in Aston
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. Around Aston, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You’ll get one clear quote for the whole job.
Why choose Mr Mastic in Aston
- We agree the colour with you first
- Experience in homes, commercial sites and hotels
- We never seal over old sealant
- An ARBOMaster approved applicator
Read what affects the cost and our reviews.
More services for Aston
Outside joints around Aston
With historic houses such as Greenlands (about 1 mile north-west) nearby, there’s older building stock in the area around Aston as well as newer homes. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth. The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Henley-On-Thames station, split movement joints are easy to miss on a rental until damp shows inside. For an older house near a landmark such as Church of St Nicholas, an extension built onto an older house moves differently, and the joint between them takes the strain.
Aston is about 2 miles north-east of Henley-on-Thames, in Oxfordshire. If you need external mastic in Aston, it’s easy to get a quote: please call 0345 464 0079 or email us. We’re based in Crawley and cover Oxfordshire, Aston included. 443 places in Oxfordshire are on our list, from the larger towns to small villages. For nearby work, see our Reading page (8 miles or so).
All of RG9 is within our area for external mastic. We cover properties on Remenham Lane and Aston Ferry Lane. If you are just outside Aston, we cover Mill End (1 mile north), Remenham Hill (1 mile south), Remenham (1 mile west), Medmenham (1 mile east) and Bockmer End (2 miles east). Larger places within reach include Thame (14 miles north), Benson (11 miles north-west), Chinnor (10 miles north), Tilehurst (9 miles south-west), Wallingford (12 miles west) and Little Heath (10 miles south-west).
Landmarks near Aston
In Aston, that means homes and buildings near Flower Pot Hotel and Fawley Court and Temple Island. Aston’s nearest station is Henley-On-Thames station, about 1.7 miles south-west of the centre. A little further out are Marlow Community Hospital (4.6 miles east) and Frazer Nash Archives (1.9 miles south-west). The countryside around Aston includes Weycock Hill and Hurley Chalk Pit.