Oxfordshire · England
Great Tew External Mastic
Our applicators work in Great Tew on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly.
- Failed seals between different materials
- Plants rooting in failed movement joints
- Failed sealant between panels on a façade
When it is not the sealant
We’d rather tell you now than do work that won’t last, so these are the limits:
- Failed render or damaged cladding panels
- Walls that need new movement joints cut into them
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before booking.
What we seal
- Render & cladding joints
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Façade panels
- Copings & trims
External mastic in Great Tew
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 where mortar or filler would crack. If you have sealant that has lost its bond to the brick or render and movement joints with cracked, split or missing sealant, we can help.
Around Great Tew, older buildings can be stone, brick or timber-framed, many with extensions added later. Where one material meets another is where water usually gets in, and they need the right sealant at the right depth.
A 12-month guarantee comes as standard.
- Where
- Great Tew (OX7)
- Region
- Oxfordshire
- Cover
- 12 months on all our work
- Price
- A clear price before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Get split or bare joints resealed while the damage is small
- Check external joints each spring
- Show decorators and builders where the movement joints are
- 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.
Small splits are the time to act. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
Great Tew: your questions answered
Is Great Tew in your area for external mastic?
Yes, Great Tew is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing.
Do you cover smaller places like Great Tew?
Yes, Great Tew 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.
What information do you need?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply call 0345 464 0079 or drop us an email.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we will agree access with you when we book.
How long should I leave it?
Cure times vary by product. We tell you how long to leave it before we go.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned before applying anything new.
Can you seal joints between two different materials?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces with primer where required.
How do you reach high-level joints?
That depends on the building and the joints. Where joints can be reached safely, we will do them. Give us some details and we will confirm the access.
Work for landlords, hotels and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
Outside joints around Great Tew
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.
If you look after a building such as Great Tew County Primary School, its movement joints, gutters and trims need looking after like any other building’s.
Great Tew is about 8 miles south-west of Banbury, in Oxfordshire. Jobs in Great Tew get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Oxfordshire, we cover 443 places, Great Tew among them. For nearby work, see our Oxford page.
Every address in OX7 is covered for external mastic. That includes homes and businesses on The Square, Old Road and New Road. We also cover the places around Great Tew: Little Tew (1 mile south-west), Swerford (2 miles north-west), Wigginton (2 miles north), South Newington (3 miles north) and Church Enstone (3 miles south). Larger places within reach include Banbury (8 miles north-east), Bicester (12 miles east), Witney (12 miles south), Carterton (15 miles south-west), Kidlington (11 miles south-east) and Bure Park (12 miles east).
Near you in Great Tew
We work in homes and buildings around The Falkland Arms Public House. Well-known places in the area include Old Forge Museum (Great Tew) (within half a mile north) and Deddington Castle (4.9 miles east). The countryside around Great Tew includes Woodford Bottom and Lamb's Pool.
How the visit works
There’s no need to move everything out, 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 in most cases. For a village or hamlet like Great Tew, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- First we look over the joints with you, agree which to renew and talk through access.
- Old sealant and any debris are cut and raked out.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Preparing for the visit
- Mention any sign-in or site rules at work premises
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
Getting 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. We will give you a clear price before any work starts.
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Quotes for external mastic in Great Tew
Every job gets its own quote. This is what makes a difference:
- Working hours on commercial sites
- Whether the work is at height
- Whether there’s mould to deal with
- The old material and how stubborn it is
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What to tell us for a quote
What to tell us when you ask for a quote:
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
- The type of property
- Where the job is, and your postcode
Want a quote for external mastic? Please call 0345 464 0079 or email us and tell us about the job. We’ll explain what we’d do and send you a clear quote before we start.
Common problems we fix in Great Tew
Every building moves. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. The sealant in the movement joints takes that strain.
Any of these means the joints need attention:
- Joints with sealant missing in places
- Water getting into walls through failed joints
- Cracked joints where brick meets render or frames
- Hard, crazed mastic that has stopped moving
If you live in an older home near Church of St Michael and All Angels, an extension built onto an older house moves differently, and the joint between them takes the strain.
Questions to ask before you book
- What preparation is included
- Which colour the sealant will be
- Whether all the old sealant comes out first
- Is VAT in the price?