Greater London · England
External Mastic in White City
Movement joints in White City need attention? We remove the old material, prepare the joints and seal them properly.
- Plants rooting in failed movement joints
- Movement joints filled with mortar instead of sealant
- Panel joints letting water in
External mastic in White City
A movement joint is only as good as its depth. Closed-cell backing rod sets the depth and stops the sealant sticking to the back, so it bonds to the two sides only and can stretch. If you have joints pointed up with cement by mistake and old sealant gone brittle and cracked, we can help, whatever the surface.
In London terraces and converted houses, gutters and walls are often shared with the house next door, so one failed joint can cause damp for more than one household. For a flat in White City, check the lease for who looks after the outside.
Big or small, you get the same 12-month guarantee in White City and across Greater London.
- Location
- White City (W12, W11, W10)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Work for landlords, hotels and businesses
We work for landlords and letting agents as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Places near White City
Other services in White City
White City buildings and the weather
Historic houses like Leighton House (about 1.3 miles south-east) are a reminder that the area around White City 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. London terraces and converted houses often share gutters, downpipes and walls, so it’s worth agreeing who is responsible before work starts.
As a London address, White City can be tricky for parking: tell us about permits, visitor bays or off-street space when you book. Letting a property close to Shepherds Bush station? Then failed wall and movement joints let damp in, so they’re worth checking between tenancies.
White City is about 1 mile north-west of Kensington, in Greater London. Jobs in White City get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. We cover 764 towns and villages across Greater London, from the larger towns to small villages. We also work in London, about 6 miles from White City.
Jobs for external mastic in W12, W11 and W10 works the same way as everywhere else we cover. Local streets include Bard Road, Wood Lane and Abdale Road, all of which we cover. Nearby, we also carry out external mastic in Shepherd's Bush (1 mile south), Notting Dale (1 mile east), North Kensington (1 mile north), Notting Hill (1 mile east) and Kensal Town (1 mile north-east). Larger places within reach include London (6 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (5 miles east), Shoreditch (6 miles east) and Walthamstow (10 miles north-east).
Local landmarks in White City
Typical jobs here are in homes near Hammersmith Park, Star Chamber Academy and Kensington Aldridge Academy, among other places. Nearby too are The Favourite pub (0.5 miles south-east) and Polish Library POSK in London (1.4 miles south-west). For rail, the closest station is Shepherds Bush station, roughly 0.5 miles south-east. Nearby you will also find Princess Louise Hospital (0.5 miles north) and Culture House (0.5 miles south). Green spaces nearby include The Long Water and Greville Place nature reserve.
The process
We work through the job in order: 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. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Preparing for the visit
- Move anything stored near the joints
- Keep children and pets away from the work area
- Let us know about parking restrictions
How to get a quote
If you are in White City and need external mastic, call 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before we start.
Related advice
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Have failed joints looked at early
- Check external joints each spring
- Avoid pressure-washing directly into sealant joints
- Make sure movement joints are not pointed over
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They must stay as flexible joints, never rendered or pointed over.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established.
When something else is needed
Before you book, it’s worth knowing the limits:
- Cracking across the wall rather than at a joint
- Rising or penetrating damp from elsewhere in the wall
- Cutting new joints into brickwork, which is building work rather than sealant work
Not sure which it is? You can phone 0345 464 0079 or email us and we will tell you honestly before you book.
Joints and surfaces we work on
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Joints between brick and frames
- Copings & trims
- Façade panels
Different surfaces, different methods
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
Brickwork movement joints
Brick moves with heat and moisture, and grows a little over time. That movement goes into the joint, so its sealant has to stay flexible.
When to call us in White City
Weeds, moss and debris in a joint are a sign the sealant has gone. Dirt and roots then trap moisture in the joint and speed up the damage.
Common reasons people contact us are:
- Plants rooting in failed movement joints
- Failed sealant between panels on a façade
- Rain getting behind render or cladding at a joint
- Sealant pulling away from one side of the joint
For site and facilities teams at buildings such as Ark Swift Primary Academy, larger buildings have long runs of movement joint that eventually need resealing.
Comparing quotes
- Who does the work, and how experienced they are
- Is VAT in the price?
- What insurance they hold
- Whether they seal over old material or remove it
Your questions about external mastic in White City
I let a flat near Shepherds Bush station. Can you help?
Yes. We work for landlords and agents as well as homeowners. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
Is parking an issue for external mastic in White City?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. That way the visit can be planned around it.
Do you work in White City?
Yes. We cover White City. For a quote, phone 0345 464 0079 or drop us an email.
Are you fully insured?
Yes, we are fully insured for every job we do.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover White City.
Can you match the colour of my brickwork?
We aim for a joint that suits the wall rather than one that jumps out. We will talk through colour options before any work starts from the range available.
How long before the joint can be used?
That depends on the sealant used, so follow the cure time we give you when we finish.
Will you leave a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.