West Berkshire · England
External & façade joints in Leckhampstead, West Berkshire
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Leckhampstead. Fully insured, ARBOMaster approved and guaranteed for a year.
- Joints where the bead has come unstuck
- Old sealant gone brittle and cracked
- Joints pointed up with cement by mistake
How it works
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours to a few days, depending on the length of joint and the access, depending on the size of the job. Somewhere like Leckhampstead needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. 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.
- Joint faces are cleaned back and primed if the sealant needs 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
- Tell us if parking is tricky
- Tell us about any previous sealing or DIY attempts
- Keep children and pets away from the work area
Getting a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, call 0345 464 0079 or email us.
Related advice
External mastic for homes and businesses in Leckhampstead
A movement joint is a deliberate break that lets a wall expand and contract. The sealant in it has to stretch and squeeze for years, and when it fails, the wall takes the strain and water finds a way in. We’re often asked to deal with weeds or debris growing in open joints and hard, crazed mastic that has stopped moving, on joints between brick and frames, copings & trims and render & cladding joints.
Around Leckhampstead, older buildings can be stone, brick or timber-framed, many with extensions added later. The joints where those materials meet are the weak points, and they need the right sealant at the right depth.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Leckhampstead (RG20)
- Wider area
- West Berkshire
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Walls and rooflines in Leckhampstead
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.
If you live in an older home near Church of St James, an extension built onto an older house moves differently, and the joint between them takes the strain.
Leckhampstead is about 6 miles north of Newbury, in West Berkshire. From the centre of Leckhampstead to the outskirts, we cover external mastic for every kind of property. Our West Berkshire coverage runs to 155 places, and Leckhampstead is one of them. There’s also a page for Reading, about 17 miles away.
Here we cover the RG20 postcode area for external mastic. We also cover Peasemore (1 mile north-east), North Heath (2 miles south-east), Downend (2 miles east), Chieveley (3 miles south-east) and Winterbourne (3 miles south). We also work in nearby towns such as Newbury (6 miles south), Thatcham (7 miles south-east), Burghfield Common (14 miles south-east), Speenhamland (5 miles south), Hungerford (8 miles south-west) and Calcot (14 miles east).
Landmarks near Leckhampstead
Nearby you will also find Donnington Castle (4.5 miles south). For a walk, there’s Snelsmore Common.
Why act early in Leckhampstead
A failed movement joint lets water into the wall. Resealing early keeps the job to the joint itself, instead of the wall and finishes around it. Where a wall is exposed, as many are in small places like Leckhampstead, wind-driven rain gets into any failed joint, and damp in older walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are not sure whether it needs doing, phone 0345 464 0079 or send us an email and we will give you an honest view and a quote.
Why book with us
- More than 20 years in sealant work
- You choose the colour before work begins
- 180+ five-star Google reviews
- Full insurance on every job
Read how sealant jobs are priced and our reviews.
When something else is needed
New sealant cannot fix everything, and we’ll tell you before any work starts. Sealant won’t put right:
- Movement that is more than a sealant joint can take
- Cracks in the bricks or render themselves, away from the joints
- Adding movement joints to masonry that has none
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Joints and surfaces we work on
- Copings & trims
- Render & cladding joints
- Brickwork movement joints
- Joints between brick and frames
- Façade panels
- Concrete & block
Places near Leckhampstead
What else we do in Leckhampstead
Common questions in Leckhampstead
What guarantee comes with external mastic in Leckhampstead?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Is Leckhampstead within the area you cover?
Yes, we do. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
How long does external mastic last?
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 12-month guarantee.
Where do you work from?
We are a Crawley-based firm. We work across South East England, London and Scotland.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, so we never do it.
How long will you be here?
As a guide, most jobs take anything from a few hours to several days, depending on the building. Bigger jobs take longer.
Do you use backing rod?
That is backing rod, a closed-cell foam. It keeps the sealant at the right depth and bonded to the sides only so it can flex with the joint.
Keeping the joints in good condition
A little care helps the new joints last. Our advice:
- Show decorators and builders where the movement joints are
- Keep high-pressure jets off the joints
- Deal with leaking gutters that soak the joints below
- Get split or bare joints resealed while the damage is small
Only paint over the joint if we’ve confirmed the sealant can take paint. Paint can crack on a flexible joint and spoil the finish.
An open movement joint lets rain into the wall every time it pours. Over time it can mean damp inside, stained render or frost-damaged brick.
What affects the cost of external mastic
The quote reflects the job in front of us. We take into account:
- The type of sealant required
- Whether there’s mould to deal with
- How much there is to do
- Any working-time requirements on site
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will explain what it covers.
Helping us quote
When you contact us, it’s useful to know:
- The address or postcode of the job
- Photos by email, if that is easy
- If someone has resealed it before
- Whether it’s a home or a business
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll talk you through the work and send you a clear quote.
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Common problems we fix in Leckhampstead
Many joints fail because they were sealed too deep or with nothing behind them. If the sealant sticks to the back as well as the sides, it cannot stretch and rips as the joint opens.
Keep an eye out for any of the following:
- Moss and dirt in joints with no sealant left
- Cracked joints where brick meets render or frames
- Old sealant gone brittle and cracked
- Movement joints filled with mortar instead of sealant
Around Leckhampstead, as everywhere, external mastic is only as good as the preparation behind it.
Comparing quotes
- Who turns up on the day
- What insurance they hold
- How long to leave it before use
- What preparation is included