Greater London · England
External Mastic in Yeading
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Yeading and across Greater London. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Joints where the bead has come unstuck
- Weeds or debris growing in open joints
- Movement joints with cracked, split or missing sealant
Surface by surface
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best.
Render joints
The face of render can be soft, so a low-modulus sealant is kinder to the joint edges. We prime where the product needs it.
About our external mastic in Yeading
Ground-floor and low-level joints are straightforward to reach. Where joints are higher up, tell us about the building when you get in touch and we’ll confirm what’s needed to reach them safely. If you have movement joints filled with mortar instead of sealant and sealant pulling away from one side of the joint, we can help.
Outside work in London starts with access: side passages, upper floors and where to park. In Yeading, joints up high may need ladders or other access, which is worth talking through when you book.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Yeading (UB5, UB4, UB1)
- Wider area
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Yeading
More services for Yeading
What we can’t put right
In fairness, there are a few things sealant won’t fix:
- Cracks in the bricks or render themselves, away from the joints
- Loose or hollow render, which needs re-rendering
- Movement that’s more than a sealant joint can take
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Where we work in Yeading
- Façade panels
- Render & cladding joints
- Concrete & block
- Brickwork movement joints
- Copings & trims
- Joints between brick and frames
Landlord and commercial work in Yeading
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.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
What we do, step by step
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a handful of joints, longer for a whole elevation. In Yeading, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- We cut out the failed sealant and rake out any dirt or growth.
- Both sides are cleaned back to sound material and primed if needed.
- 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.
How to prepare
- Mention any parking rules near the property
- Move anything stored near the joints
- Mention any tricky access
How to get a quote
If you are in Yeading and need external mastic, phone 0345 464 0079 or drop us an email. Tell us what the problem is and where, and you will get a clear quote before work begins.
Read more
Yeading: your questions answered
Do you work for landlords with property near Southall station?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Is Yeading in your area for external mastic?
Yes, Yeading is within the area we cover. We work across London and the South East. You can call 0345 464 0079 or email us and tell us what needs doing.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Is it OK to seal over old sealant?
No. The old sealant always comes out first, so the new sealant bonds properly.
Can you reach joints on upper floors?
It depends on the building. We work on joints that can be reached safely. Tell us about the building and we will confirm what access is needed.
What colours does the sealant come in?
Exterior sealants are made in a range of colours, from greys and browns to whites and stone shades. We choose the closest to your brick or render so it doesn’t stand out.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we are fully insured.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Why act early in Yeading
Sealing over the top of old mastic doesn’t hold for long. New sealant does not bond well to old, weathered sealant, so the old joint is cut out fully first. In a London flat, a failed joint rarely stays your problem alone: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us and we will give you an honest view and a quote.
What you get with us
- 180+ five-star Google reviews
- Homes, businesses and hotels
- You choose the colour before work begins
- Quality sealants from Arbo and Everbuild
Take a look at our cost guide and customer reviews.
Walls and rooflines in Yeading
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind. Historic houses like Northolt Manor (about 1.4 miles north-east) are a reminder that the area around Yeading has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material.
If you look after a building such as Brookside Primary School, its movement joints, gutters and trims need looking after like any other building’s. In the older streets around St Joseph the Worker & Dovetail Centre, an extension built onto an older house moves differently, and the joint between them takes the strain.
Yeading is about 2 miles north-east of Hayes, in Greater London. Wherever you are in the UB5 postcode area, our applicators can take on external mastic. Yeading is one of 764 places in Greater London where we work. For nearby work, see our London page, about 13 miles away.
We work across UB5, UB4 and UB1 for external mastic. If you need external mastic at a property on Owen Road, Friar Road and Maple Road or anywhere close by, we can help. We also cover the places around Yeading: Yiewsley (1 mile north), Dormers Wells (2 miles south-east), Northolt (2 miles north-east), Southall (2 miles south) and South Ruislip (2 miles north). We also work in nearby towns such as London (13 miles east), City of Westminster (10 miles east), Marylebone (11 miles east), Kensington (8 miles east), St Pancras (12 miles east) and Shoreditch (13 miles east).
Around Yeading
Typical jobs here are in homes near White Hart Public House, Barnhill Community High School and Northala Fields and the streets around them. The closest station to Yeading is Southall station, roughly 1.8 miles south of the centre. Nearby you’ll also find Hayes Cottage Hospital (1.5 miles south-west) and The Chimes (3.8 miles west). Green spaces nearby include Middle Lake and Yeading Brook Meadows.
Can I do it myself?
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, then guaranteed for a year.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
When to call us in Yeading
Joints sealed without backing rod, or far too deep, rarely last. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
Look out for these signs:
- Joints pointed up with cement by mistake
- Panel joints letting water in
- Rain getting behind render or cladding at a joint
- Cracked joints where brick meets render or frames
As a London address, Yeading can be tricky for parking: let us know about parking bays, permits or a driveway.
What your quote should include
- Are they insured?
- Whether you can choose the colour
- How long the guarantee is
- When the joint can take water or movement