Buckinghamshire · England
External Mastic in Great Kingshill
Movement joints in Great Kingshill need attention? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Sealant that has lost its bond to the brick or render
- Brick movement joints where the sealant has split
- Panel joints letting water in
Different surfaces, different methods
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. Where one has been mortared, we cut it out and reseal it with sealant.
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it so the sealant is not too deep.
About our external mastic in Great Kingshill
On houses, flats and commercial buildings across Great Kingshill, we reseal joints in brickwork, render, cladding and façade panels. The preparation is the same whatever the wall: clean joint faces and the right depth. If you are dealing with gaps where render, brick and frames meet and moss and dirt in joints with no sealant left, we can help, whatever the surface.
Around Great Kingshill, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points.
Your job is guaranteed for a year, as with all our work.
- Location
- Great Kingshill (HP15)
- Wider area
- Buckinghamshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
When to call us in Great Kingshill
Sometimes a movement joint was filled with mortar or a rigid filler, often by someone who didn’t know what it was for. The joint can’t move, so the wall cracks somewhere else instead.
Keep an eye out for these signs:
- Sealant that has lost its bond to the brick or render
- Old sealant gone brittle and cracked
- Rain getting behind render or cladding at a joint
- Brick movement joints where the sealant has split
If you look after a building such as Great Kingshill Church of England Combined School, larger buildings have long runs of movement joint that eventually need resealing.
Questions to ask before you book
- What happens if the job turns out different
- Whether all the old sealant comes out first
- What the cure time is
- Who turns up on the day
How to look after the new joints
A little care helps the new joints last. We recommend:
- Keep soil, plants and ivy away from the joints
- Check external joints each spring
- Avoid pressure-washing directly into sealant joints
- Point out the joints to other trades
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage, all bigger jobs than a reseal.
Landlord and commercial work in Great Kingshill
For anyone letting property in or around Great Kingshill, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Places near Great Kingshill
Also in Great Kingshill
What happens on the day
You do not need to clear the whole room or building, just the space around the work. Everything nearby is protected, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. Somewhere like Great Kingshill needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- Each joint is checked and the colour of the new sealant agreed.
- 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.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Mention any parking rules near the property
- Mention any tricky access
- On commercial sites, let us know about site rules
Ask for a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is.
Advice
Common questions in Great Kingshill
Do you work for landlords with property near Great Missenden station?
Yes, rental work is part of what we do. 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.
Do you cover Great Kingshill for external mastic?
Yes. Our work covers London and the South East, and Great Kingshill is part of that. You can call 0345 464 0079 or email us and tell us what needs doing, and we will give you a clear quote.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Will there be a smell?
Some sealants have a smell while they cure, but it fades. Opening a window helps.
Can you seal over the old sealant?
No. New silicone won’t bond to old silicone, and it traps any mould or water underneath. It all has to come out first.
How often do external joints need resealing?
There’s no fixed answer: sunny, exposed elevations and busy joints wear faster. Check them each year and reseal when they split or harden. Every job carries our one-year guarantee.
Are you an approved applicator?
Yes. We are approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Why it’s worth doing now in Great Kingshill
It often makes sense to reseal all the failing joints on an elevation together. They’ve weathered the same way and it means sorting access once. Where a wall is exposed, as many are in small places like Great Kingshill, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please phone 0345 464 0079 or drop us an email.
What you get with us
- White, clear, grey or another colour, product permitting
- Fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- Sealant colour chosen to suit
Walls and rooflines in Great Kingshill
Historic houses like Hughenden Manor (about 2.1 miles south-west) are a reminder that the area around Great Kingshill has older buildings as well as new. Where a home is older, older walls and rooflines need a sealant that moves with them and suits the material. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
In the older streets around Church of the Good Shepherd, the joints between older walls, newer extensions and the roofline need a sealant that can move. Letting a property close to Great Missenden station? Then split movement joints are easy to miss on a rental until damp shows inside.
Great Kingshill is about 3 miles north of High Wycombe, in Buckinghamshire. From the centre of Great Kingshill to the outskirts, we cover external mastic for every kind of property. Our area takes in 263 places across Buckinghamshire. Reading is on our list too, about 19 miles from Great Kingshill.
Here we cover the HP15 postcode area for external mastic. Streets in the area include Stag Lane, Fairfields and Common Road, and we cover them all. We also cover the places around Great Kingshill: Cryers Hill (1 mile south), Widmer End (1 mile south-east), Spurlands End (1 mile east), Hughenden Valley (1 mile south-west) and Stony Green (1 mile north-west). We also work in nearby towns such as Aylesbury (11 miles north), High Wycombe (3 miles south), Chesham (6 miles north-east), Marlow (7 miles south), Amersham (5 miles east) and Beaconsfield (6 miles south-east).
Around Great Kingshill
In Great Kingshill, that means homes and buildings near Pipers Corner School, The Red Lion pub and Holmer Green Senior School. Great Kingshill’s nearest station is Great Missenden station, roughly 2.1 miles north-east of the centre. Well-known places in the area include Eden (3.3 miles south) and Great Missenden (2.3 miles north-east). Green spaces nearby include Prestwood Local Nature Reserve.
When it isn’t the sealant
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Cracked brickwork or render that needs a builder or plasterer
- Subsidence or other structural problems
- Cutting new joints into brickwork, which is building work rather than sealant work
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think before booking.
Joints and surfaces we work on
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
- Façade panels