Oxfordshire · England
External & façade joints in Thame, Oxfordshire
Our applicators work in Thame on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Old sealant gone brittle and cracked
- Rigid filler in a joint that should flex
- Damp patches traced to an open external joint
When it is not the sealant
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Render that is blown, hollow or coming away
- Cracking across the wall rather than at a joint
- Walls that need new movement joints cut into them
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think.
What we seal
- Brickwork movement joints
- Concrete & block
- Copings & trims
- Render & cladding joints
- Joints between brick and frames
- Façade panels
External mastic in Thame
External mastic is a job where short cuts show quickly. Overfilled joints, missing backing rod and sealant laid over old sealant all tend to fail early. We take the old material out and do it properly. Typical jobs include sealant that has lost its bond to the brick or render and failed sealant between panels on a façade, across copings & trims, concrete & block and joints between brick and frames.
Garage door frames, porches and roofline trims are all part of external work in a town like Thame. Where two materials meet, they move differently, and the sealant has to allow for it.
There’s a 12-month guarantee on every job, large or small.
- Location
- Thame (OX9)
- Region
- Oxfordshire
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Should I try it myself first?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
What we are called out for in Thame
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and tears as soon as the joint widens.
These are the problems we’re asked about most:
- Weathered mastic that no longer stretches
- Moss and dirt in joints with no sealant left
- Brick movement joints where the sealant has split
- Failed seals between different materials
Schools such as Barley Hill Primary School are buildings too, and its movement joints, gutters and trims need looking after like any other building’s.
What to look for in a quote
- What guarantee comes with the work
- Is the old sealant removed completely?
- How the joint is cleaned and prepared
- Which colour the sealant will be
What the job involves on each surface
Render joints
Render has movement joints and stop beads that need sealing. They’re resealed in a sealant that suits the render.
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.
Common questions in Thame
I let a flat near Haddenham & Thame Parkway station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Is there a guarantee on external mastic in Thame?
All our work, in Thame and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used before we leave.
What is backing rod for?
The foam is closed-cell backing rod. It keeps the sealant at the right depth and bonded to the sides only, which would stop it stretching.
Where do you work from?
We work from Crawley. Our applicators cover Thame, along with the rest of our area.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Do you cover Thame?
Yes, we do. Thame is part of the area we cover.
Can you match the colour of my brickwork?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render so the joint doesn’t draw the eye.
Outside joints around Thame
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like Adwell House (about 3.9 miles south) are a reminder that the area around Thame 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.
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. For landlords with property near Haddenham & Thame Parkway station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Thame is about 8 miles south-west of Aylesbury, in Oxfordshire. Homes, rented property, offices and hotels in Thame is covered for external mastic, old or new, large or small. The work is guaranteed for a year. Across Oxfordshire, we cover 443 places, Thame among them. For nearby work, see our Oxford page, about 11 miles away.
We cover every part of the OX9 postcode area for external mastic. Whether your property is on Upper High Street, Butter Market and High Street or a nearby road, we can help. With the A329 and A418 close by, Thame is easy for our applicators to reach. Neighbouring places we cover for external mastic include Moreton (1 mile south-west), Towersey (1 mile east), Kingsey (2 miles east), Long Crendon (2 miles north-west) and Haddenham (3 miles north-east). Larger places within reach include Oxford (11 miles west), Didcot (15 miles south-west), Bicester (13 miles north-west), Abingdon-on-Thames (14 miles west), Henley-on-Thames (15 miles south) and Kidlington (14 miles west). Being one of Oxfordshire’s larger places, Thame has homes, rented property and businesses of every kind.
Local landmarks in Thame
We work in homes and buildings around Lord Williams's School and Cross Keys Public House and the streets around them. The nearest railway station is Haddenham & Thame Parkway station, roughly 2.1 miles north-east of the centre. Well-known places in the area include Thame Museum (0.5 miles north-west) and Thame Community Hospital (within half a mile south-east). Green spaces nearby include Snakemoor.
How the visit works
There isn’t much for you to do on the day. Point us to the joints and we’ll get on with it. The work itself takes a few hours for a handful of joints, longer for a whole elevation from start to finish. In Thame, parking is rarely complicated, though it helps to know about driveways or restrictions, and let us know if the work is upstairs, in a flat or up high outside.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- 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.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
Ask for a quote
Need a quote? 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 work begins.
Related advice
Quotes for external mastic in Thame
For a quick quote, just ask. What matters most is:
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
- The number of rooms or windows
- Mould in or behind the old joints
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
What we need to know
There’s no need for technical detail. It helps if you can tell us:
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- A few pictures by email, if you can
- Where the job is, and your postcode
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, call 0345 464 0079 or drop us an email.
Why act early in Thame
A properly done movement joint is an even line in a colour that suits the wall. A rushed bead with no backing looks untidy and doesn’t last. Black mould and gaps in sealant do not fix themselves, and in a busy home in Thame they get worse with every use. Now is the easy time to put it right.
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why Thame customers choose us
- You choose the colour before work begins
- Over 20 years’ experience
- One-year guarantee on every job
- Sealant colour chosen to suit
Read our cost guide and our reviews.