Oxfordshire · England
Over Norton External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Over Norton. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Weathered mastic that no longer stretches
- Movement joints filled with mortar instead of sealant
- Rain getting behind render or cladding at a joint
External mastic for homes and businesses in Over Norton
Joints between dissimilar materials, like brick against render or concrete against a steel frame, see movement from both sides. A flexible exterior sealant takes up that movement. If you have joints with sealant missing in places and weeds or debris growing in open joints, we can put it right, on joints between brick and frames, copings & trims and brickwork movement joints alike.
Somewhere as small as Over Norton, homes and farm buildings often face open ground, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
Each job carries a 12-month guarantee.
- Place
- Over Norton (OX7)
- Wider area
- Oxfordshire
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How to look after the new joints
Looking after new joints is easy:
- Have failed joints looked at early
- Leave the joints unpainted unless we’ve said otherwise
- Show decorators and builders where the movement joints are
- Check external joints each spring
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Once a joint can’t move, the wall finds another way, often as cracks near the joint. Resealing it early helps prevent that.
What we can’t put right
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Cracking across the wall rather than at a joint
- Structural movement, which needs a surveyor or engineer
- Cutting new joints into brickwork, which is building work rather than sealant work
If in doubt, ring 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Over Norton
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Concrete & block
- Brickwork movement joints
What we do, step by step
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. For a village or hamlet like Over Norton, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- First, the joints are inspected and the access agreed.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Preparing for the visit
- Clear items away from the joints we are working on
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
How to get a quote
To get a quote, ring 0345 464 0079 or drop us an email with the location and a short description of the problem. You’ll have a clear quote before work begins.
Related advice
Towns and villages near Over Norton
More services for Over Norton
Landlord and commercial work in Over Norton
Housing providers, facilities teams and property managers book us too in Over Norton and across Oxfordshire. We can quote a run of properties together, and we’re fully insured for the work.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
What affects the quote in Over Norton
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The number and length of the joints
- Working hours on commercial sites
- Which sealant suits the joint
- How many rooms, windows or areas are involved
The cost 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.
What to tell us for a quote
To make quoting easier, let us know:
- Whether it has been sealed before
- Any access issues, like height or stairs
- The rough size of the job
- A few photos by email, if you can
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work and send you a clear quote.
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Outside joints around Over Norton
With historic houses such as Chastleton House (about 4.1 miles west) nearby, there’s older building stock in the area around Over Norton as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For an older house near a landmark such as St James, old and new materials meet at the roofline and walls, which is where sealant earns its keep. Managing a site like Holy Trinity Catholic School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Over Norton is about 11 miles south-west of Banbury, in Oxfordshire. From the centre of Over Norton to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Over Norton is one of 443 places in Oxfordshire where we work. For nearby work, see our Oxford page, about 19 miles away.
All of OX7 is covered for external mastic, from the main roads to the quietest streets. We cover properties on Main Street, Choicehill Road and Quarhill Close. If you are just outside Over Norton, we cover Chipping Norton (1 mile south), Salford (2 miles west), Great Rollright (2 miles north), Sarsden (3 miles south-west) and Churchill (3 miles south-west). Further out, we also cover Banbury (11 miles north-east), Witney (12 miles south), Carterton (13 miles south), Kidlington (14 miles south-east), Neithrop (11 miles north-east) and Grimsbury (12 miles north-east).
What’s near Over Norton
In Over Norton, that means homes and buildings near The Chequers Public House and Chipping Norton School and the streets around them. Well-known places in the area include Chipping Norton Museum of Local History (0.8 miles south) and Wheelbarrow Castle (3.4 miles north-west).
Leave it or put it right?
Mortar or ordinary filler might look like a quick way to close an open joint, but it stops the joint moving. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. Where a wall is exposed, as many are in small places like Over Norton, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Combining jobs into one visit generally makes better use of the time than several visits. We’ll send you a clear quote for the lot.
What you get with us
- Every job guaranteed for a year
- You choose the colour before work begins
- Neat joints and a tidy finish
- Homes, businesses and hotels
See our cost guide or our reviews.
Questions from Over Norton
Is Over Norton within the area you cover?
Yes. Over Norton is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Is Over Norton in your area for external mastic?
Yes. Our work covers London and the South East, and Over Norton is part of that. You can call 0345 464 0079 or send us an email and let us know what needs doing.
Is there a guarantee?
Yes, for a year. If anything is not right with the work within the year, let us know and we’ll sort it.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures, and ventilation helps.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
Are you insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Do you work for landlords and businesses?
Yes, we do. We work in homes, commercial premises and hotels, and we are fully insured.