Buckinghamshire · England
External Mastic in Wendover Dean
External mastic for Wendover Dean and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Damp patches traced to an open external joint
- Failed sealant between panels on a façade
- Joints pointed up with cement by mistake
External mastic in Wendover Dean
Joints in render and cladding are easy to overlook until a damp patch appears. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product. We work on concrete & block, joints between brick and frames and brickwork movement joints, and common reasons people get in touch are old sealant gone brittle and cracked and cracked joints where brick meets render or frames.
External sealant needs dry, clean surfaces, so work around Wendover Dean is planned for dry weather. Let us know about access to every wall, plus any garages or outbuildings.
A 12-month guarantee comes as standard.
- Where
- Wendover Dean (HP22)
- Wider area
- Buckinghamshire
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why it’s worth doing now in Wendover Dean
Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Where a wall is exposed, as many are in small places like Wendover Dean, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting. If you are unsure, call 0345 464 0079 or drop us an email and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Wendover Dean
- 12-month guarantee on every job
- Colour agreed with you before we start
- Neat joints and a tidy finish
- We are fully insured
Towns and villages near Wendover Dean
What else we do in Wendover Dean
What we do, step by step
On the day, we look over the joints with you first. We protect the surfaces around the joints before work begins. The work generally takes a few hours for a handful of joints, longer for a whole elevation. Somewhere as small as Wendover Dean, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Mention any parking rules near the property
- Clear items away from the joints we are working on
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, ring 0345 464 0079 or drop us an email.
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Quotes for external mastic in Wendover Dean
There’s no set price list. The quote depends on:
- The type of sealant required
- When we can work, for business premises
- Access and height
- How much there is to do
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’ll know the price before we begin.
What we need to know
Photos by email are helpful but not essential. Try to tell us:
- The rough size of the job
- Whether it’s a home or a business
- The problem you’ve noticed
- Where the job is, and your postcode
We quote each job on its own, so start by telling us what you need. Simply ring 0345 464 0079 or email us and describe the job, and pictures are welcome.
Wendover Dean buildings and the weather
With historic houses such as Cholesbury Manor House (about 3.5 miles north-east) nearby, there’s older building stock in the area around Wendover Dean as well as newer homes. Where a home is older, older brick and stone need a sealant that suits them, at the right joint depth. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you let a flat or house near Wendover station, outside joints that have cracked can let damp into a rental, so check them between lets. Cholesbury Manor House, about 3.5 miles north-east, is one of the historic houses in the wider area around Wendover Dean. Managing a site like John Colet School? Then its movement joints, gutters and trims need looking after like any other building’s.
Wendover Dean is about 5 miles west of Chesham, in Buckinghamshire. We carry out external mastic for householders, landlords and businesses in Wendover Dean, as part of our work across Buckinghamshire. Across Buckinghamshire, we cover 263 places, and Wendover Dean is one of them. Reading is on our list too, around 22 miles away.
Postcode districts we cover here for external mastic: HP22. Streets in the area include London Road and Cobblershill Lane. Close by, we work in Kingsash (1 mile north-east), Lee Gate (1 mile east), Hunt's Green (1 mile south-east), Wendover (2 miles north) and Great Missenden (2 miles south-east). We also work in nearby towns such as Aylesbury (7 miles north-west), High Wycombe (7 miles south), Chesham (5 miles east), Marlow (11 miles south), Amersham (7 miles south-east) and Beaconsfield (9 miles south).
Near you in Wendover Dean
Typical jobs here are in homes near The Firecrest pub and the streets around them. Wendover Dean’s nearest station is Wendover station, about 2 miles north-west. A little further out are Chiltern Hospital (3.4 miles south-east) and Little Kimble Motte (3.3 miles west). For a walk, there’s Coombe Hill and Dancersend Nature Reserve.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
What sealant work cannot fix
Sealant is not the answer to every problem, and we’d rather say so up front. It won’t solve:
- Adding movement joints to masonry that has none
- Structural movement, which needs a surveyor or engineer
- Cracking across the wall rather than at a joint
If you are not sure, just phone 0345 464 0079 or drop us an email and we will give you a straight answer before booking.
Joints and surfaces we work on
- Joints between brick and frames
- Render & cladding joints
- Façade panels
- Concrete & block
- Copings & trims
- Brickwork movement joints
Landlord and commercial work in Wendover Dean
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
Different surfaces, different methods
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it so the sealant isn’t too deep.
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.
Wendover Dean questions
Do you cover Wendover Dean for external mastic?
Yes. We work across London and the South East, and Wendover Dean is part of that. You can call 0345 464 0079 or drop us an email and tell us what needs doing.
Do you work for landlords with property near Wendover station?
Yes, we work for landlords and letting agents. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before work begins.
What’s an expansion joint in brickwork?
A movement joint is a planned break in the wall that absorbs expansion and shrinkage. It’s sealed with a flexible sealant, not mortar.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.
Is the work guaranteed?
Yes. Every job comes with a 12-month guarantee.
Is there any odour?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Are you ARBOMaster approved?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
Where do you work from?
We work from Crawley. We cover Wendover Dean and the rest of Buckinghamshire.