Oxfordshire · England
External & façade joints in Aston, Oxfordshire
Specialist external mastic for Aston: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Moss and dirt in joints with no sealant left
- Damp patches traced to an open external joint
- Brick movement joints where the sealant has split
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Look over the joints every year, ideally after winter
- Tell anyone working on the walls about the movement joints
- Do not let climbing plants root in the sealant
- Deal with leaking gutters that soak the joints below
Have a quick look at the joints each spring. Watch for splits, edges coming away or growth in the joint.
Once a joint can’t move, the wall finds another way, generally as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
External mastic for homes and businesses in Aston
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product in a matching colour. If you have old sealant gone brittle and cracked and cracked joints where brick meets render or frames, we can put it right.
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.
A one-year guarantee comes as standard.
- Location
- Aston (OX18)
- Wider area
- Oxfordshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
FAQs for Aston
Is there a guarantee on external mastic in Aston?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Is Aston within the area you cover?
Yes, Aston is covered. Our work covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is there any odour?
That depends on the sealant. Some products have a noticeable smell, others very little, and any smell fades as they cure.
How long should I leave it?
It depends on the product and the conditions. Before we leave, we will tell you the cure time.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
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 reach joints on upper floors?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we’ll confirm what access is needed.
What we cannot put right
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Render that is blown, hollow or coming away
- Rising or penetrating damp from elsewhere in the wall
- Cracks in the bricks or render themselves, away from the joints
If in doubt, call 0345 464 0079 or email us and we’ll say what we think.
Surfaces we seal
- Copings & trims
- Joints between brick and frames
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Façade panels
Quotes for external mastic in Aston
You will get a clear quote before work begins. It takes into account:
- How much there is to do
- Whether there’s mould to deal with
- Access and height
- How many areas need sealing
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
Helping us quote
When you contact us, these details help:
- Whether it’s a home or a business
- The problem you’ve noticed
- Where the property is
- If someone has resealed it before
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or email us.
The process
You do not need to clear the whole room or building, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to several days, depending on the building in most cases. Somewhere as small as Aston, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- We push in closed-cell backing rod so the sealant is the right depth and bonds to the sides only.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Tell us about any water getting in
- Mention if the joints have been sealed before
- Tell us if parking is tricky
Ask for a quote
For a quote, call 0345 464 0079 or email us with the location and a short description of the problem. We’ll give you a clear quote before any work starts.
Related advice
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
What the job involves on each surface
Render joints
Cracks along render joints let water in behind the coat. A sound joint keeps the render dry behind.
Concrete and blockwork
Concrete faces can be dusty and porous, so cleaning and priming matter. We prime where the sealant needs it.
External mastic in Aston: local notes
Rainfall in the South East is lower than in much of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Longworth House (about 3.4 miles south-east) are a reminder that the area around Aston 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.
For an older house near a landmark such as Church of St James, old and new materials meet at the roofline and walls, which is where sealant earns its keep. If you look after a building such as Aston and Cote Church of England Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Aston is about 4 miles south of Witney, in Oxfordshire. We carry out external mastic for householders, landlords and businesses in Aston and nearby, as part of our work across Oxfordshire. Our area takes in 443 places across Oxfordshire, from the larger towns to small villages. Our Oxford page covers work nearby, about 12 miles away.
Here we cover the OX18 postcode area for external mastic. You will find streets such as Cote Road, Saxel Close and Woodbridge Close, all of which we cover. If you’re just outside Aston, we cover Bampton (2 miles west), Weald (2 miles west), Curbridge (3 miles north), Black Bourton (4 miles west) and Clanfield (4 miles west). Larger places within reach include Oxford (12 miles east), Didcot (14 miles south-east), Abingdon-on-Thames (10 miles east), Witney (4 miles north), Carterton (5 miles north-west) and Wantage (10 miles south).
Around Aston
Nearby you’ll also find Longworth Hospital (5.7 miles south-west) and Bampton Castle (2.1 miles west).