Buckinghamshire · England
External & façade joints in Westcott, Buckinghamshire
We cover Westcott for sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Cracked joints where brick meets render or frames
- Weathered mastic that no longer stretches
- Joints pointed up with cement by mistake
External mastic in Westcott
Low-level joints can normally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what access is needed. We work on copings & trims, façade panels and brickwork movement joints, and common reasons people get in touch are joints where the bead has come unstuck and joints pointed up with cement by mistake.
In a village or hamlet like Westcott, older cottages and farm buildings often stand in the open, where walls and rooflines take the weather head on. Joints on those walls need a sealant that moves with the building and stays in place.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we will put it right.
- Location
- Westcott (HP18)
- Region
- Buckinghamshire
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Why deal with it now?
The longer a joint stays open, the more water the wall takes in. In cold weather, frost can damage wet brick and render, so the damage spreads beyond the joint. Where a wall is exposed, as many are in small places like Westcott, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
The cost reflects the work involved, not guesswork. That is why we ask about the job first and send you a clear quote before any work starts.
What you get with us
- We never seal over old sealant
- A sealant colour to suit the surroundings
- Anti-fungal silicone where joints get wet
- We agree the colour with you first
See what affects the cost and what customers say.
When it is not the sealant
Sealant is not the answer to every problem, and we will tell you before any work starts. It won’t solve:
- Structural movement, which needs a surveyor or engineer
- Cracked brickwork or render that needs a builder or plasterer
- Rising or penetrating damp from elsewhere in the wall
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly before you book.
What we seal
- Render & cladding joints
- Façade panels
- Copings & trims
- Joints between brick and frames
- Brickwork movement joints
- Concrete & block
What affects the cost of external mastic
Every job gets its own quote. These are the things that affect it:
- How many areas need sealing
- How easy the joints are to reach
- The old material and how stubborn it is
- Working hours on commercial sites
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- The type of property
- Where the property is
- Whether it has been sealed before
- What the problem is, such as mould, gaps, leaks or cracking
Want a quote for external mastic? Please phone 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and send you a clear quote before we start.
Landlords, agents and businesses in Westcott
Letting agents and landlords in Westcott can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
How the visit works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a handful of joints, longer for a whole elevation, and the area is left clean. Somewhere like Westcott 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.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- On commercial sites, let us know about site rules
- Mention any parking rules near the property
Get a quote
For external mastic in Westcott, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Advice
DIY versus a professional finish
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.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. Everything old must be removed first.
What the job involves on each surface
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod coloured to suit the wall.
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
Other services in Westcott
Westcott buildings and the weather
With historic houses such as Waddesdon Manor (about 0.9 miles east) nearby, there’s older building stock in the area around Westcott as well as newer homes. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
Rented homes near Aylesbury Vale Parkway station change hands often, and 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 Mary, older walls, gutters and the joints where extensions meet them need a flexible sealant. Managing a site like Westcott Church of England School? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Westcott is about 6 miles west of Aylesbury, in Buckinghamshire. Homes, rented property, offices and hotels in Westcott is covered for external mastic. The work is guaranteed for a year. 263 places in Buckinghamshire are on our list. Oxford is on our list too, about 14 miles from Westcott.
Work in HP18 works the same way as everywhere else we cover. You will find streets such as High Street, Lower Green and Ashendon Road. We also cover Waddesdon (1 mile east), Wormstone (2 miles east), Ashendon (2 miles south-west), Kingswood (2 miles north-west) and Upper Winchendon (2 miles south-east). Within a short drive, we also cover Aylesbury (6 miles east), Buckingham (10 miles north), Elmhurst (6 miles east), Southcourt (7 miles south-east), Princes Risborough (10 miles south-east) and Haydon Hill (5 miles east).
Landmarks near Westcott
Around Westcott, our work takes us to homes and buildings near Waddesdon Church of England School and the streets around them. For rail, the closest station is Aylesbury Vale Parkway station, about 4.2 miles east. Other landmarks nearby include St John's Hospital (4.6 miles south-east) and Dinton Castle (4.4 miles south-east). Not far away are Upper Ray Meadows.
Westcott questions
Do you cover smaller places like Westcott?
Yes. Westcott is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Aylesbury Vale Parkway station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before any work starts.
Where do you work from?
Mr Mastic is based in Crawley. We cover Westcott and the rest of Buckinghamshire.
Will the new joint stand out?
There’s a good range of exterior colours, including greys, browns, whites and stone tones. We pick the one that suits your wall best so the joint does not draw the eye.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we’re fully insured too.
Should I point up the gap in my brickwork?
No. A mortar-filled joint cannot move, so the wall cracks somewhere else instead. It needs a flexible sealant over backing rod.
Do you do commercial work?
Yes. We have worked for hotels, offices and other businesses, and we are fully insured.
How much does external mastic cost in Westcott?
Size, access and the old material all affect the cost. Ask us for a quote and we will talk you through it.