Buckinghamshire · England
External & façade joints in Aylesbury, Buckinghamshire
Sealing brickwork movement joints, render, cladding and façade joints for Aylesbury, backed by a 12-month guarantee. Call for a quick quote.
- Movement joints filled with mortar instead of sealant
- Weathered mastic that no longer stretches
- Movement joints with cracked, split or missing sealant
External mastic in Aylesbury, done properly
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible sealant bridges the two where mortar or filler would crack. If you are dealing with cracked joints where brick meets render or frames and joints with sealant missing in places, we can help, on render & cladding joints, brickwork movement joints and concrete & block alike.
A place the size of Aylesbury has buildings of every age, from older brick terraces to modern blocks with rendered or clad walls. Newer buildings rely on sealed movement joints, while older ones need their gutters, fascias and trims kept tight.
Our work is backed for twelve months, in Aylesbury and everywhere else we cover.
- Where
- Aylesbury (HP21, HP19, HP20, HP18)
- Region
- Buckinghamshire
- Cover
- 12 months on all our work
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
DIY sealant or a professional job?
If you’ve already had a go yourself, that is fine. We cut it out and start again.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
What sealant work can’t fix
To be straight with you, some problems need a different trade:
- Render that’s blown, hollow or coming away
- Walls that need new movement joints cut into them
- Cracks in the bricks or render themselves, away from the joints
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly.
Surfaces we seal
- Brickwork movement joints
- Façade panels
- Joints between brick and frames
- Copings & trims
- Concrete & block
- Render & cladding joints
Your questions about external mastic in Aylesbury
I let a flat near Aylesbury station. Can you help?
Yes. We work for landlords and agents as well as householders. You can phone 0345 464 0079 or email us with the details for a clear quote.
Is external mastic in Aylesbury guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all.
What do you need from me for a quote?
Only a few details: the address or postcode, what’s wrong and any access issues. Then call 0345 464 0079 or send us an email.
Can you seal joints between two different materials?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
Do you come to Aylesbury?
Yes. We cover Aylesbury. To book, ring 0345 464 0079 or send us an email.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What sealant do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We’ll tell you what we are using and why.
What we are called out for in Aylesbury
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:
- Rigid filler in a joint that should flex
- Moss and dirt in joints with no sealant left
- Sealant pulling away from one side of the joint
- Panel joints letting water in
Managing a site like Buckinghamshire UTC? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Before booking anyone
- Which sealant they’ll use, and why
- Is VAT in the price?
- Who does the work, and how experienced they are
- Whether they seal over old material or remove it
What affects the cost of external mastic
We quote each job individually. These are the things that affect it:
- The size of the job
- Any working-time requirements on site
- How easy the joints are to reach
- Whether there’s mould to deal with
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
What to tell us for a quote
To help us quote quickly, let us know:
- What’s wrong with the joints now
- The address or postcode of the job
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
For external mastic in Aylesbury, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
What happens if it’s left?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. In flats, shops and offices in Aylesbury, a failed joint can let water into the unit below or behind a wall, where it can go unnoticed until the damage is done.
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.
What you get with us
- One-year guarantee on every job
- White, clear, grey or coloured to suit, where the product allows
- We agree the colour with you first
- Approved under the ARBOMaster scheme
Read our cost guide and customer reviews.
How to look after the new joints
Aftercare is simple:
- Ask before painting over external sealant
- Point out the joints to other trades
- Keep water from gutters off the wall
- Keep high-pressure jets off the joints
Look over the joints once a year, ideally after winter. Splits, gaps at the edges or plants in the joint are early warning signs.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years.
Towns and villages near Aylesbury
Also in Aylesbury
The process
Once we’re on site, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes a few hours for a handful of joints, longer for a whole elevation. Jobs in a place the size of Aylesbury range from town-centre flats to offices and family homes. Whichever it is, tell us how to get in, where to park and where the work is.
- First we look over the joints with you, agree which to renew and talk through access.
- We cut out the failed sealant and rake out any dirt or growth.
- 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.
- The new sealant, chosen to suit the brick or render, is applied and tooled to a neat finish.
How to prepare
- Clear items away from the joints we’re working on
- For indoor joints, keep the area dry beforehand if you can
- On commercial sites, let us know about site rules
Ask for a quote
For a quote, ring 0345 464 0079 or drop us an email and tell us where the job is and what the problem looks like. We’ll give you a clear price before any work starts.
Read more
What external mastic looks like in Aylesbury
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.
If you live in an older home near Church of St Mary, the joints between older walls, newer extensions and the roofline need a sealant that can move. Rented homes near Aylesbury station change hands often, and split movement joints are easy to miss on a rental until damp shows inside.
Aylesbury is about 38 miles north-west of London, in Buckinghamshire. Whether you are in the middle of Aylesbury or further out, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our area takes in 263 places across Buckinghamshire, from the larger towns to small villages. There’s also a page for Oxford, about 18 miles away.
Jobs for external mastic in HP21, HP19, HP20 and HP18 is quoted and booked the same way as anywhere else. External mastic is available to properties on Market Street, Market Square and High Street and the roads around them. Aylesbury sits on or near the A41 and A413. Close by, we work in California (1 mile south), Queens Park (1 mile east), New Zealand (1 mile north), Walton (1 mile south-east) and Elmhurst (1 mile north-east). Within a short drive, we also cover High Wycombe (13 miles south), Chesham (11 miles south-east), Buckingham (14 miles north-west), Amersham (13 miles south-east), Princes Risborough (6 miles south) and Haddenham (6 miles south-west). As one of the bigger places in Buckinghamshire, Aylesbury has homes, rented property and businesses of every kind.
What’s near Aylesbury
We work in homes and buildings around Stocklake Park Community School, The Derby Arms Public House and Bearbrook Combined School. Aylesbury has its own railway station: Aylesbury station. Other landmarks nearby include Roald Dahl Children's Gallery (within half a mile east) and Royal Buckinghamshire Hospital (less than half a mile north). For a walk, there’s Coombe Hill.