Buckinghamshire · England
External Mastic in Great Kimble
Movement joints in Great Kimble need attention? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Damp patches traced to an open external joint
- Moss and dirt in joints with no sealant left
- Joints where the bead has come unstuck
About our external mastic in Great Kimble
We’re ARBOMaster approved applicators, and each external joint gets a sealant suited to it. Some surfaces need a primer before sealing. We work on brickwork movement joints, façade panels and joints between brick and frames, and common reasons people get in touch are rain getting behind render or cladding at a joint and rigid filler in a joint that should flex.
Older homes in small places like Great Kimble may be stone, brick or timber-framed, often with later extensions. Where one material meets another is where water usually gets in.
The work is covered for a year after we finish. If there’s a problem with it, please call 0345 464 0079 or drop us an email.
- Where
- Great Kimble (HP17)
- Wider area
- Buckinghamshire
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Why act early in Great Kimble
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together, and access only has to be arranged once. In a small place like Great Kimble, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs. Call for a quick quote and we will explain what it covers.
Why Great Kimble clients choose us
- Any old sealant cut out fully, not covered over
- A 12-month guarantee on all work
- 180+ five-star Google reviews
- An ARBOMaster approved applicator
See our cost guide and what customers say.
What external mastic looks like in Great Kimble
London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For landlords with property near Little Kimble station, failed wall and movement joints let damp in, so they’re worth checking between tenancies. For an older house near a landmark such as Church of St Nicholas, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Great Kimble is about 5 miles south of Aylesbury, in Buckinghamshire. From the centre of Great Kimble to the outskirts, we cover external mastic for every kind of property, from flats and houses to offices and hotels. Our Buckinghamshire coverage runs to 263 places, and Great Kimble is one of them. Our Oxford page covers work nearby (18 miles or so).
Postcode districts we cover here for external mastic: HP17. You will find streets such as Bridge Street, Hill View and Lower Icknield Way, all of which we cover. We also cover Little Kimble (1 mile north-east), Askett (1 mile south-west), Lower Cadsden (1 mile south), Meadle (1 mile west) and Whiteleaf (1 mile south). We also work in nearby towns such as Aylesbury (5 miles north), High Wycombe (9 miles south), Chesham (9 miles east), Marlow (12 miles south), Amersham (10 miles south-east) and Beaconsfield (12 miles south-east).
Landmarks near Great Kimble
Typical jobs here are in homes near The Swan pub and Princes Risborough School, among other places. There’s a railway station in Great Kimble itself: Little Kimble station. A little further out are National Paralympic Heritage Centre (3.6 miles north) and Stoke Mandeville Hospital (3.4 miles north). The countryside around Great Kimble includes Beacon Hill and Brush Hill Local Nature Reserve.
Great Kimble: your questions answered
Is Great Kimble in your area for external mastic?
Yes. We work across London and the South East, and Great Kimble is part of that. Just ring 0345 464 0079 or email us with a few details of the job.
Will you come out to Great Kimble?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
How long before the joint can be used?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used.
Are you fully insured?
Yes. Full insurance covers our work.
How long does external mastic last?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. A yearly look will tell you when they need doing. Our work comes with a 12-month guarantee.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we’re fully insured.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. Then ring 0345 464 0079 or email us.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new sealant bonds properly.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Rising or penetrating damp from elsewhere in the wall
- Cracking across the wall rather than at a joint
- Loose or hollow render, which needs re-rendering
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before booking.
What we seal
- Brickwork movement joints
- Render & cladding joints
- Copings & trims
- Joints between brick and frames
- Concrete & block
- Façade panels
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
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.
What happens on the day
Most of a good job is in the preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to several days, depending on the building. For a village or hamlet like Great Kimble, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip 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.
Before we arrive
- Keep children and pets away from the work area
- Where the joints are inside, avoid wetting them before we arrive
- Let us know about earlier repairs to the joints
Get a quote
Need a quote? Please call 0345 464 0079 or email us with a few details. We will explain what we’d do and give you a clear quote before work begins.
Advice
Towns and villages near Great Kimble
Also in Great Kimble
How to look after the new joints
No joint lasts for ever, but care makes a real difference. Our tips:
- Make sure movement joints are not pointed over
- Have failed joints looked at early
- Point out the joints to other trades
- Look over the joints every year, ideally after winter
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage.
Should I try it myself first?
A careful DIYer can reseal a simple joint, 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.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Common problems we fix in Great Kimble
Buildings move more than people expect. Brickwork grows a little over the years, blockwork and concrete shrink, and all of it moves with heat and moisture. All of that ends up in the joint sealant.
The most common problems we see are:
- Failed sealant between panels on a façade
- Hard, crazed mastic that has stopped moving
- Sealant that has lost its bond to the brick or render
- Moss and dirt in joints with no sealant left
For site and facilities teams at buildings such as Great Kimble Church of England School, movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Before you book anyone
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
- What happens if they find a problem under the old sealant
- Whether they seal over old material or remove it