Kent · England
External Mastic in Oldbury
Problem with your movement joints in Oldbury? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Movement joints with cracked, split or missing sealant
- Joints pointed up with cement by mistake
- Water getting into walls through failed joints
How we quote for external mastic
Every job gets its own quote. These are the things that affect it:
- How easy the joints are to reach
- Whether old sealant or filler has to be cut out
- Working hours on commercial sites
- The number of rooms or windows
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
To make quoting easier, please include:
- The address or postcode of the job
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
- If it’s domestic, commercial or a hotel
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
About our external mastic in Oldbury
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement where a rigid filler would soon crack. We work on concrete & block, joints between brick and frames and façade panels, and the jobs we see most are rigid filler in a joint that should flex and sealant that has lost its bond to the brick or render.
Somewhere as small as Oldbury, homes and farm buildings often face open ground, so walls and rooflines take the full force of wind and rain. Joints on those walls need a sealant that moves with the building and stays in place.
All of our work is guaranteed for twelve months.
- Where
- Oldbury (TN15)
- Wider area
- Kent
- Cover
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Looking after it afterwards
So the new joints stay in good condition:
- Tell anyone working on the walls about the movement joints
- Avoid pressure-washing directly into sealant joints
- Do not let climbing plants root in the sealant
- Have failed joints looked at early
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
A joint that has stopped moving pushes the movement elsewhere, usually as cracking in the brickwork or render nearby. Resealing it early helps prevent that.
Questions from Oldbury
Is Oldbury in your area for external mastic?
Yes. Our work covers London and the South East, and Oldbury is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job.
Is Oldbury within the area you cover?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
I’m a tenant. Can you help?
Yes, though it’s best to check with your landlord first. Landlords are often happy for the work to be arranged.
Why is there a gap in my brick wall?
Most straight vertical gaps in brickwork are movement joints. It gives the wall room to move, and it should be sealed with a flexible sealant.
How do I get a quote for external mastic in Oldbury?
There’s no set price, as it depends on the job: how much there is, what’s there now, how we reach it and what it needs. You will get a clear quote before work begins.
Do you work for landlords and businesses?
Yes, we do. Domestic, commercial and hotel work are all part of what we do.
How long does external mastic take?
Typically it takes anything from a few hours to several days, depending on the building. Bigger jobs take longer.
Can you seal joints between render and window frames?
Yes. Joints between dissimilar materials are a big part of external work. We use a flexible sealant suited to both surfaces.
Other services in Oldbury
What we do, step by step
Every visit runs the same way: we look at the joints together, protect the area around them, carry out the job and clear up. It generally takes anything from a few hours to several days, depending on the building. For a village or hamlet like Oldbury, the journey is planned in advance: 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.
- Failed sealant is removed back to clean, sound faces.
- Closed-cell backing rod is pushed in so the sealant bonds to two sides only.
- Primer is applied wherever the sealant needs it.
- We gun in low-modulus sealant and tool it neatly.
Preparing for the visit
- Keep pets and children clear of the area while we work
- Move anything stored near the joints
- Mention any tricky access
Getting a quote
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. You will have a clear quote before work begins.
Read more
Outside joints around Oldbury
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. Historic houses like Ightham Mote (about 1.9 miles south) are a reminder that the area around Oldbury has older buildings as well as new. In older buildings, older brick and stone need a sealant that suits them, at the right joint depth.
In the older streets around Church of St Peter, older walls, gutters and the joints where extensions meet them need a flexible sealant. Managing a site like Ightham Primary School? Then larger buildings have long runs of movement joint that eventually need resealing.
Oldbury is about 4 miles east of Sevenoaks, in Kent. If you need external mastic in Oldbury, it’s easy to get a quote: please ring 0345 464 0079 or drop us an email. We cover Kent from our Crawley base, Oldbury included. Oldbury is one of 922 places in Kent where we work for external mastic. Our London page covers work nearby (22 miles or so).
Postcode districts we cover here for external mastic: TN15. Local streets include Oldbury Lane, Spring Lane and Sevenoaks Road, and we cover them all. If you’re just outside Oldbury, we cover Ightham (1 mile south), Styants Bottom (1 mile west), Ivy Hatch (1 mile south), Sheet Hill (1 mile south-east) and Stone Street (1 mile south-west). Larger places within reach include Maidstone (11 miles east), Dartford (11 miles north), Sevenoaks (4 miles west), Royal Tunbridge Wells (10 miles south), Gravesend (11 miles north-east) and Tonbridge (6 miles south).
Local landmarks in Oldbury
Locally, jobs take us to homes and businesses close to The Old House, Ivy Hatch Nature Reserve and Wrotham School and the streets around them. For rail, the closest station is Borough Green & Wrotham station, about 1.4 miles north-east of the centre. Nearby you’ll also find Beechin Wood Archery Museum (2.4 miles east) and Ightham Court (0.8 miles north-east).
When to call us in Oldbury
Sometimes a movement joint was filled with mortar or a rigid filler by mistake. The joint cannot move, so the wall cracks somewhere else instead.
The problems people normally mention when they call are:
- Leaking joints around cladding and façade panels
- Rigid filler in a joint that should flex
- Weeds or debris growing in open joints
- Cracked joints where brick meets render or frames
For landlords with property near Borough Green & Wrotham station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Comparing quotes
- Which sealant they’ll use, and why
- Who turns up on the day
- The length of the guarantee
- What the quote includes, VAT included or not
Landlords, agents and businesses in Oldbury
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can go on one quote.
If you manage several properties in or around Oldbury, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
Why it’s worth doing now in Oldbury
Running new sealant over the old bead rarely lasts. The new layer can’t bond properly to old, weathered material, so the old joint is cut out fully first. Where a wall is exposed, as many are in small places like Oldbury, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
The cost depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before work begins, so you know where you stand.
Why Oldbury customers choose us
- Trusted Arbo and Everbuild sealants
- You choose the colour before work begins
- Old sealant always removed completely
- Domestic, commercial and hotel work
Take a look at what affects the cost and customer reviews.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.