Oxfordshire · England
External Mastic in North Aston
We cover North Aston for sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Cracked joints where brick meets render or frames
- Leaking joints around cladding and façade panels
- Brick movement joints where the sealant has split
How we handle external mastic in North Aston
Getting the depth right is half the job. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, so it bonds to the two sides only and can stretch. We’re often asked to deal with rain getting behind render or cladding at a joint and cracked joints where brick meets render or frames, across joints between brick and frames, copings & trims and render & cladding joints.
Outside joints can only be sealed when they’re dry, so work in North Aston is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
Each job carries a 12-month guarantee.
- Location
- North Aston (OX25)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quotes
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What affects the cost of external mastic
Call for a quick quote. What matters most is:
- Access and height
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- The type of sealant required
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
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:
- Photos by email, if that is easy
- Where the property is
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we’ll take it from there.
Landlords, agents and businesses in North Aston
Landlords and agents in North Aston can book us as well as homeowners. Sealant work between tenants keeps a property looking cared for before the next move-in.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
North Aston buildings and the weather
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.
For landlords with property near Heyford station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
North Aston is about 7 miles south of Banbury, in Oxfordshire. From the centre of North Aston to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our Oxfordshire coverage runs to 443 places, North Aston among them. Oxford is on our list too, about 15 miles from North Aston.
Every address in OX25 is within our area for external mastic. Local streets include The Green and Somerton Road. Other places close to North Aston include Dane Hill (1 mile west), Duns Tew (1 mile west), Middle Aston (1 mile south), Deddington (2 miles north) and Steeple Aston (2 miles south). Within a short drive, we also cover Oxford (15 miles south), Banbury (7 miles north), Bicester (8 miles south-east), Witney (14 miles south-west), Kidlington (9 miles south) and Headington Quarry (14 miles south).
What’s near North Aston
The closest station to North Aston is Heyford station, roughly 2.7 miles south. A little further out are Deddington Castle (1.7 miles north).
Should I try it myself first?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What we can’t put right
Some problems need a builder, plumber or other trade rather than us:
- Damp that is not coming from the joint
- Cracks in the bricks or render themselves, away from the joints
- Structural movement, which needs a surveyor or engineer
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly before you book.
Surfaces we seal
- Concrete & block
- Joints between brick and frames
- Copings & trims
- Façade panels
- Brickwork movement joints
- Render & cladding joints
What we do, step by step
Before we leave, we go over the finished joints with you and explain the cure time. The visit itself generally takes a few hours to a few days, depending on the length of joint and the access, depending on the size of the job. Somewhere as small as North Aston, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- 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.
- We prime the faces where required.
- 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
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
Getting a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
Advice
Surface by surface
Joints between dissimilar materials
Joints where frames, sills or panels meet the wall are common leak points. The old joint is removed and a sealant that bonds to both sides goes in.
Concrete and blockwork
Concrete and block walls shrink as they dry and move with temperature. We reseal their joints with backing rod and a flexible product.
What we’re called out for in North Aston
The wrong product in a moving joint is a classic cause. A high-modulus or general-purpose sealant can be too rigid for a busy joint, so it pulls away from the edges.
It’s worth asking for a quote if you see:
- Hard, crazed mastic that has stopped moving
- Failed seals between different materials
- Joints where the bead has come unstuck
- Panel joints letting water in
Homes close to Church of St Mary include some older properties, and an extension built onto an older house moves differently, and the joint between them takes the strain.
What to look for in a quote
- How long the guarantee is
- How the surfaces are prepared before sealing
- Which colour the sealant will be
- What happens if they find a problem under the old sealant
Common questions in North Aston
Do you cover smaller places like North Aston?
Yes, North Aston is covered. 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.
Is North Aston in your area for external mastic?
Yes, North Aston is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
What information do you need?
The location, the problem and the rough size of the job. Photos by email help too.
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.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures, and ventilation helps.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we’re using and why.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
How long before the joint can be used?
Different products cure at different speeds, so follow the cure time we give you when we finish.