Buckinghamshire · England
External & façade joints in Hyde Heath, Buckinghamshire
Movement joints in Hyde Heath need attention? We cut out the old, prepare the joints and apply the right sealant.
- Rigid filler in a joint that should flex
- Water getting into walls through failed joints
- Old sealant gone brittle and cracked
External mastic in Hyde Heath
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where mortar or filler would crack. We work on concrete & block, copings & trims and façade panels, and people most often call us about cracked joints where brick meets render or frames and joints pointed up with cement by mistake.
Around Hyde Heath, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
Our work is backed for twelve months, in Hyde Heath and everywhere else we cover.
- Where
- Hyde Heath (HP6)
- Region
- Buckinghamshire
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Make sure movement joints are not pointed over
- Show decorators and builders where the movement joints are
- Check the sealant is paintable before painting near it
- Walk round the building once a year and look at the joints
Follow the cure time we give you before the joint is knocked or disturbed. The surface skins over quickly, but full cure takes longer.
Act while the splits are small. Then it’s a straightforward cut-out and reseal with no damage behind it to deal with.
Hyde Heath questions
I let a flat near Amersham station. Can you help?
Yes, we work for landlords and agents. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Will you come out to Hyde Heath?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can a movement joint be filled with mortar?
No, not if it’s a movement joint. Pointing it stops it working. We will reseal it with a flexible sealant.
Do you seal joints where cladding meets other materials?
Yes. Materials like render, brick, metal and uPVC all move differently, so the joint between them must be flexible. We choose one that suits both surfaces.
Do you use backing rod?
We fit closed-cell backing rod wherever the joint depth needs controlling. It controls the depth and stops the sealant bonding to the back so the bead can stretch.
Do you guarantee your work?
Yes. Every job comes with our 12-month guarantee.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you do not need to watch us work.
How often do external joints need resealing?
It varies from wall to wall: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Our work comes with a 12-month guarantee.
Towns and villages near Hyde Heath
Other services in Hyde Heath
When something else is needed
We will always be straight with you, so here’s what sealant cannot fix:
- Cracked brickwork or render that needs a builder or plasterer
- Subsidence or other structural problems
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
If you are not sure, just call 0345 464 0079 or email us and we will give you a straight answer.
Where we work in Hyde Heath
- Render & cladding joints
- Joints between brick and frames
- Copings & trims
- Façade panels
- Concrete & block
- Brickwork movement joints
The process
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours to a few days, depending on the length of joint and the access. For a village or hamlet like Hyde Heath, 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.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
- Mention any sign-in or site rules at work premises
How to get a quote
Getting a quote is simple: let us know what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand, and we’ll take it from there.
Related advice
External mastic in Hyde Heath: local notes
Historic houses like Cholesbury Manor House (about 4.4 miles north) are a reminder that the area around Hyde Heath 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. The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Rented homes near Amersham station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets. Managing a site like Hyde Heath Infant School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s. Homes close to Parish church of Saint John the Baptist include some older properties, and old and new materials meet at the roofline and walls, which is where sealant earns its keep.
Hyde Heath is about 2 miles south-west of Chesham, in Buckinghamshire. Every kind of property in Hyde Heath can book us for external mastic. The work is guaranteed for a year. Our Buckinghamshire coverage runs to 263 places, and Hyde Heath is one of them. We also work in Reading, around 22 miles away.
Work in HP6 works the same way as everywhere else we cover. We cover properties on Brays Meadow, Meadow Way and Westfield. If you’re just outside Hyde Heath, we cover Mop End (2 miles south), Chesham Bois (2 miles east), Waterside (2 miles east), Beamond End (2 miles south-west) and Woodrow (2 miles south). Within a short drive, we also cover Aylesbury (11 miles north-west), High Wycombe (6 miles south-west), Marlow (10 miles south-west), Beaconsfield (6 miles south), Chalfont St Peter (7 miles south-east) and Elmhurst (11 miles north-west).
Landmarks near Hyde Heath
We work in homes and buildings around Chiltern Hills Academy and The Plough pub. The closest station to Hyde Heath is Amersham station, roughly 2.2 miles south-east. A little further out are Great Missenden (1.5 miles west) and Chiltern Hospital (1.8 miles west). Not far away are Sands Bank.
Different surfaces, different methods
Cladding and façade panels
Panels heat up and cool down quickly, so the joints work hard every day. The sealant is chosen with that in mind.
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. Priming is done where the sealant calls for it.
How we quote for external mastic
The price is agreed before any work begins. It takes into account:
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- The number and length of the joints
- The number of rooms or windows
The cost reflects the work involved, not guesswork. That is why we ask a few questions first.
Helping us quote
Photos by email are helpful but not essential. Try to tell us:
- What’s wrong with the joints now
- The rough size of the job
- If someone has resealed it before
- Whether it’s a home or a business
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
What happens if it’s left?
An open joint keeps letting water into the wall with every downpour. Wet masonry is more easily damaged by frost, so the damage spreads beyond the joint. Around Hyde Heath, older homes often have timber in their floors and frames, and water through a failed joint can rot timber if it’s left.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re not sure whether it needs doing, phone 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Hyde Heath
- Homes, businesses and hotels
- Fully insured
- Over 20 years’ experience
- 4.9 on Google from 180+ five-star reviews
Take a look at how sealant jobs are priced or our reviews.
Work for landlords, hotels and businesses
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.