Buckinghamshire · England
External & façade joints in Alscot, Buckinghamshire
Professional external mastic in and around Alscot, with old sealant always removed completely and a one-year guarantee.
- Joints where the bead has come unstuck
- Joints with sealant missing in places
- Failed seals between different materials
About our external mastic in Alscot
For buildings in Alscot, we reseal external joints of all kinds, from brick movement joints to cladding panels. The preparation is the same whatever the wall: clean joint faces and the right depth. Typical jobs include joints with sealant missing in places and sealant pulling away from one side of the joint, across concrete & block, copings & trims and render & cladding joints.
External sealant needs dry, clean surfaces, so work around Alscot is planned for dry weather. Tell us about access to all sides of the building, including outbuildings and garages.
Whatever the size of the job, it’s backed by our one-year guarantee in Alscot and across Buckinghamshire.
- Where
- Alscot (HP27)
- Region
- Buckinghamshire
- Cover
- A year, on every job
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Landlords, agents and businesses in Alscot
In hotels, rooms out of use cost money, so the work can be planned room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
How the job changes by surface
Render joints
Render is weaker at the surface than brick, so a sealant that stretches easily protects the edges. Priming is done where the sealant calls for it.
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
How it works
You don’t need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the work takes a few hours for a handful of joints, longer for a whole elevation for a typical job. Somewhere like Alscot needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at every joint and agree a colour to suit the wall.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Before we arrive
- Plan for the work area to be out of bounds to pets and children
- Where the joints are inside, avoid wetting them before we arrive
- Clear items away from the joints we’re working on
Ask for a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Related advice
What external mastic looks like in Alscot
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Monks Risborough station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. If you look after a building such as Princes Risborough Primary School, larger buildings have long runs of movement joint that eventually need resealing.
Alscot is about 6 miles east of Thame, in Buckinghamshire. From the centre of Alscot to the outskirts, external mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our Buckinghamshire coverage runs to 263 places, and Alscot is one of them. We also work in Oxford, about 17 miles from Alscot.
All of HP27 is covered for external mastic. Neighbouring places we cover for external mastic include Monks Risborough (1 mile east), Princes Risborough (1 mile south-east), Longwick (1 mile west), Askett (1 mile north-east) and Meadle (1 mile north). Further out, we also cover Aylesbury (6 miles north), High Wycombe (8 miles south-east), Chesham (10 miles east), Marlow (11 miles south), Amersham (11 miles east) and Beaconsfield (12 miles south-east).
Landmarks near Alscot
Typical jobs here are in homes near The Whiteleaf Cross pub and Princes Risborough School, among other places. The nearest railway station is Monks Risborough station, roughly 0.5 miles north-east of the centre. Other landmarks nearby include Stoke Mandeville Hospital (4.8 miles north) and Great Kimble Dial Hill (1.7 miles north-east). The countryside around Alscot includes Beacon Hill and Brush Hill Local Nature Reserve.
Questions from Alscot
Do you cover smaller places like Alscot?
Yes, Alscot is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is Alscot in your area for external mastic?
Yes, Alscot is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or email us with a few details of the job.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used.
How long does the job take?
Typically it takes anything from a few hours to several days, depending on the building. Larger jobs naturally take longer.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we have agreed the job, you don’t need to watch us work.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Is there a guarantee?
Yes. Every job comes with our 12-month guarantee.
Will you leave a mess?
No. The area is protected while we work and cleaned up afterwards.
More services for Alscot
How to look after the new joints
So the new joints stay in good condition:
- Keep movement joints as flexible joints, not mortar
- Fix overflowing gutters above sealed joints
- Show decorators and builders where the movement joints are
- Act on the first splits you see
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
Once a joint cannot move, the wall finds another way, generally as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
When to call us in Alscot
Sunlight, wet weather and frost wear exterior sealant down. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
These are the problems we are asked about most:
- Joints where the bead has come unstuck
- Joints pointed up with cement by mistake
- Weathered mastic that no longer stretches
- Joints with sealant missing in places
If you live in an older home near St Teresa's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
What to look for in a quote
- How long to leave it before use
- Whether VAT is included
- What happens if they find a problem under the old sealant
- Whether all the old sealant comes out first
Why deal with it now?
A properly done movement joint is an even line in a colour that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner, so it pays to do it properly once. Older cottages and farmhouses around Alscot can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Why us?
- Neat joints and a tidy finish
- We are fully insured
- A 12-month guarantee on all work
- Rated 4.9 stars on Google
Take a look at what affects the cost or what customers say.
DIY sealant or a professional job?
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.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.