Buckinghamshire · England
External & façade joints in Bishopstone, Buckinghamshire
We cover Bishopstone for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Panel joints letting water in
- Cracked joints where brick meets render or frames
- Hard, crazed mastic that has stopped moving
Landlord and commercial work in Bishopstone
We also work for property managers and facilities teams. Several sites can go on one quote.
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
External mastic for homes and businesses in Bishopstone
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We look over the joints, agree the ones to renew and reseal with a flexible, weatherproof product. If you are dealing with gaps where render, brick and frames meet and failed sealant between panels on a façade, we can help, on joints between brick and frames, concrete & block and render & cladding joints alike.
Outside joints can only be sealed when they’re dry, so work in Bishopstone is booked around the forecast. Let us know about access to every wall, plus any garages or outbuildings.
We stand behind the work with a one-year guarantee, so you are covered after we’ve gone.
- Where
- Bishopstone (HP17)
- Wider area
- Buckinghamshire
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Bishopstone: your questions answered
Is Bishopstone in your area for external mastic?
Yes, Bishopstone is within the area we cover. We work across London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job, and we will give you a clear price.
Can you help a landlord with a rental near Aylesbury station?
Yes, we work for letting agents and landlords. You can phone 0345 464 0079 or send us an email with the address and a few details, and we’ll give you a fixed price before we start.
What colours does the sealant come in?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We choose the closest to your brick or render so it does not stand out.
Is it worth trying 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.
Can you seal joints between render and window frames?
Yes. Materials like render, brick, metal and uPVC all move differently, so a flexible sealant is needed where they meet. The sealant is matched to both sides.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Do the sealants smell?
That depends on the sealant. Some products have a noticeable smell, others very little.
Is the work guaranteed?
Yes, always. There’s a 12-month guarantee on every job, wherever you are.
DIY sealant or a professional job?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Why deal with it now?
It often makes sense to reseal all the failing joints on an elevation together. Joints of the same age tend to fail together and it means sorting access once. In a small place like Bishopstone, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please call 0345 464 0079 or email us and we will talk you through it.
Why us?
- Colour picked to suit the job
- You choose the colour before work begins
- We leave the area clean and tidy
- We never seal over old sealant
Take a look at what affects the cost or customer reviews.
Towns and villages near Bishopstone
Also in Bishopstone
What we cannot put right
New sealant can’t fix everything, and we will tell you before any work starts. Sealant will not put right:
- Cracking across the wall rather than at a joint
- Structural movement, which needs a surveyor or engineer
- Failed render or damaged cladding panels
If in doubt, call 0345 464 0079 or drop us an email and we’ll say what we think.
What we seal
- Brickwork movement joints
- Concrete & block
- Façade panels
- Joints between brick and frames
- Copings & trims
- Render & cladding joints
What affects the quote in Bishopstone
Your quote is based on your job. We look at:
- Whether old sealant or filler has to be cut out
- Access and height
- How much there is to do
- Mould in or behind the old joints
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, phone 0345 464 0079 or email us for an honest opinion and a quote.
What to tell us for a quote
When you contact us, it’s useful to know:
- The address or postcode of the job
- The type of property
- Photos by email, if that is easy
- Access, such as stairs, a lift or height
Want a quote for external mastic? Please phone 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Keep soil, plants and ivy away from the joints
- Ask before painting over external sealant
- Point out the joints to other trades
- Avoid pressure-washing directly into sealant joints
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
How the visit works
Our applicators work methodically: protect, prepare, seal, tidy. For most jobs that takes anything from a few hours to several days, depending on the building, and the area is left clean. Somewhere as small as Bishopstone, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we look over the joints with you, agree which to renew and talk through access.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Try not to wet indoor joints just before the visit
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any parking rules near the property
Get a quote
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or drop us an email.
Read more
Bishopstone buildings and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you let a flat or house near Aylesbury station, outside joints that have cracked can let damp into a rental, so check them between lets. Schools such as The Mandeville School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Bishopstone is about 2 miles south of Aylesbury, in Buckinghamshire. For external mastic in and around Bishopstone, please call 0345 464 0079 or send us an email for a quick quote. We cover Buckinghamshire from our Crawley base, Bishopstone included. Across Buckinghamshire, we cover 263 places, and Bishopstone is one of them. Oxford is on our list too, about 17 miles from Bishopstone.
Our applicators cover all of HP17 for external mastic and the streets around it. Local streets include Bishopstone, Furlong Crescent and Moreton Lane, all of which we cover. If you’re just outside Bishopstone, we cover Sedrup (1 mile north), Walton Court (1 mile north-east), Ford (2 miles west), Upton (2 miles west) and Little Kimble (2 miles south-east). Within a short drive, we also cover High Wycombe (11 miles south), Chesham (11 miles south-east), Marlow (15 miles south), Amersham (13 miles south-east), Beaconsfield (15 miles south-east) and Elmhurst (3 miles north-east).
Local landmarks in Bishopstone
In Bishopstone, that means homes and buildings near The Harrow pub, among other places. For rail, the closest station is Aylesbury station, roughly 2.1 miles north-east. Other landmarks nearby include National Paralympic Heritage Centre (1.9 miles north-east) and Friars Square (2.2 miles north-east). For a walk, there’s Brush Hill Local Nature Reserve and Beacon Hill.