Buckinghamshire · England
External Mastic in Wendover
Our applicators work in Wendover on sealing brickwork movement joints, render, cladding and façade joints. Old material cut out, joints cleaned and sealed neatly.
- Weeds or debris growing in open joints
- Movement joints filled with mortar instead of sealant
- Brick movement joints where the sealant has split
How we handle external mastic in Wendover
A movement joint is only as good as its depth. Backing rod controls how deep the sealant goes and keeps it off the back of the joint, leaving it bonded to two faces so it can move with the wall. If you are dealing with plants rooting in failed movement joints and joints where the bead has come unstuck, we can put it right, on render & cladding joints, concrete & block and copings & trims alike.
In and around Wendover, older properties sit alongside newer ones, each with its own outside joints. Older gutters and trims need their joints resealed; newer brick and render need their movement joints kept sound.
You’re covered for a year from the day we finish. If anything isn’t right with it, ring 0345 464 0079 or send us an email.
- Where
- Wendover (HP22)
- Wider area
- Buckinghamshire
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What the job involves on each surface
Render joints
Render is weaker at the surface than brick, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
Concrete and blockwork
Concrete faces can be dusty and porous, so preparation is key. We prime where the sealant needs it before the bead.
Wendover questions
Can you do external mastic in Wendover?
Yes. We work across London and the South East, and Wendover is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll give you a clear price.
Can you help a landlord with a rental near Wendover station?
Yes, we work for landlords and agents. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before work begins.
How long does the job take?
It depends on the size of the job, but as a guide it takes a few hours to a few days, depending on the length of joint and the access. We’ll tell you when we quote.
How long before the joint can be used?
It depends on the product. We tell you how long to leave it before we go.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Can you match the colour of my brickwork?
The sealant colour is picked to suit the wall, so the joint sits quietly in the wall. There’s a wide choice of exterior colours.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
When it isn’t the sealant
We’d rather tell you now than do work that won’t last, so these are the limits:
- Cutting new joints into brickwork, which is building work rather than sealant work
- Render that is blown, hollow or coming away
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Copings & trims
- Brickwork movement joints
- Concrete & block
- Render & cladding joints
- Joints between brick and frames
- Façade panels
Quotes for external mastic in Wendover
There’s no set price list, because jobs vary so much. The quote depends on:
- Any mould that needs treating
- Which sealant suits the joint
- How many areas need sealing
- The amount of work
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Asking for a quote
When you contact us, it’s useful to know:
- The rough size of the job
- How we’d reach the joints
- Any previous sealing or DIY work
- A few photos by email, if you can
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we’ll come back to you with a quote.
How it works
The work is kept neat and contained to the area we’re working on. Expect the work to take a few hours to a few days, depending on the length of joint and the access. A visit to Wendover is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
- Try not to wet indoor joints just before the visit
Get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work and give you a clear quote.
Related advice
External mastic in Wendover: local notes
Historic houses like Cholesbury Manor House (about 3.9 miles east) are a reminder that the area around Wendover has older buildings as well as new. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as The John Hampden School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. For landlords with property near Wendover station, outside joints that have cracked can let damp into a rental, so check them between lets. Homes close to Parish Church of St Mary include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Wendover is about 5 miles south-east of Aylesbury, in Buckinghamshire. Wendover gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. 263 places in Buckinghamshire are on our list. Oxford is on our list too, about 21 miles from Wendover.
All of HP22 is within our area for external mastic, from the main roads to the quietest streets. We cover properties on High Street, The Paddocks and Victory Road. You’ll find Wendover on the A413 and B4009, which makes it straightforward to reach with everything needed for external mastic. Close by, we work in Halton (1 mile north), Nash Lee (2 miles west), Chalkshire (2 miles west), Terrick (2 miles west) and Weston Turville (2 miles north-west). Larger places within reach include Aylesbury (5 miles north-west), High Wycombe (9 miles south), Chesham (7 miles south-east), Marlow (13 miles south), Amersham (9 miles south-east) and Beaconsfield (12 miles south).
Near you in Wendover
Around Wendover, our work takes us to homes and buildings near John Colet School, Wendover House School and The Pack Horse Public House and the streets around them. There’s a railway station in Wendover itself: Wendover station. Other landmarks nearby include Trenchard Museum (1.2 miles north-east) and Stoke Mandeville Hospital (3.4 miles north-west). The countryside around Wendover includes Haddington Hill and Dancersend Nature Reserve.
Towns and villages near Wendover
Other services in Wendover
Why act early in Wendover
The longer a joint stays open, the more water the wall takes in. Wet masonry is more easily damaged by frost around the joint, so the damage spreads beyond the joint. In an older home around Wendover, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or send us an email and we’ll talk you through it.
Why Wendover clients choose us
- Tidy, careful work
- Experience in homes, commercial sites and hotels
- We never seal over old sealant
- More than 20 years in sealant work
Take a look at how sealant jobs are priced and what customers say.
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Aftercare tips
To keep the joints looking good and working properly:
- Avoid pressure-washing directly into sealant joints
- Check external joints each spring
- Leave the joints unpainted unless we’ve said otherwise
- Never let anyone fill a movement joint with mortar
Look over the joints once a year, ideally after winter. Watch for splits, edges coming away or growth in the joint.
Leave a failed movement joint and water keeps getting into the wall. Over time it can mean damp inside, stained render or frost-damaged brick which cost more to put right than the joint.