Greater London · England
New Build Mastic in Shepherd's Bush
Problem with your new-build sealant joints in Shepherd's Bush? We remove the old material, prepare the joints and seal them properly, and the work is guaranteed for a year.
- Skirting joints opening in the first winter
- Second-fix sealing on new plots
- Gaps opening as the house dries out and settles
New build mastic for homes and businesses in Shepherd's Bush
Failed shower seals, gaps along the skirting and messy beads are common items on a new-home snagging list. If you are still within the builder’s snagging or warranty period, tell them first. Common call-outs are for untidy sealant flagged on a snagging list and gaps between new skirting and floors, on plot handovers, kitchens and show homes.
Across London, commercial floors have movement joints that break down under heavy foot traffic, and new homes need their plot mastic finished properly before handover.
You are covered for a year from the day we finish. If there’s a problem with it, please ring 0345 464 0079 or email us.
- Place
- Shepherd's Bush (W12, W11, W14)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
New build mastic around Shepherd's Bush
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. Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent.
If you’ve bought a new home near Shepherds Bush station, the sealant around baths, showers and frames is worth checking in the first year or two.
Shepherd's Bush is about 1 mile west of Kensington, in Greater London. Every kind of property in Shepherd's Bush is covered for new build mastic. The work is guaranteed for a year. We cover 764 towns and villages across Greater London.
All of W12, W11 and W14 is within our area for new build mastic. New build mastic is available to properties on Bard Road, Stowe Road and Wells Road and the roads around them. With the A402 close by, Shepherd's Bush is easy for our applicators to reach. Other places close to Shepherd's Bush include White City (1 mile north), Holland Park (1 mile east), Notting Hill (1 mile north-east), Kensington (1 mile east) and Notting Dale (1 mile north-east). We also work in nearby towns such as London (5 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).
Around Shepherd's Bush
In Shepherd's Bush, that means homes and buildings near The Cardinal Vaughan Memorial RC School, Corona Theatre School and Polish Library POSK in London and the streets around them. You’ll also find Hammersmith Park (0.5 miles north-west) and The Central Bar (under half a mile east). There’s a railway station in Shepherd's Bush itself: Shepherds Bush station. Other landmarks nearby include West 12 Shepherds Bush (under half a mile east) and Culture House (under half a mile west). Green spaces nearby include WWT London Wetland Centre and The Long Water.
Landlords, agents and businesses in Shepherd's Bush
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
When it isn’t the sealant
A few problems are outside what sealant work can do:
- Leaks from pipes, valves or wastes, which need a plumber
- Movement caused by a poorly fitted tray or bath
- Damaged fittings that need replacing
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think before you book.
Surfaces we seal
- Skirting & floors
- Show homes
- Bathrooms & en suites
- Plot handovers
- Kitchens
- Windows & doors
Shepherd's Bush: your questions answered
Can you help a landlord with a rental near Shepherds Bush station?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Can parking be tricky for a visit in Shepherd's Bush?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you when we finish.
Who should fix failed sealant in a new build?
Start with the builder if you are in the snagging or warranty period. Once that is done, or if they will not put it right, we can reseal it properly.
Do I have to be there?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Will it make a mess?
No. We protect the surfaces around the joints, and we clear up the old sealant and our materials before we leave.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Different surfaces, different methods
Bathrooms and en suites
En suite showers are a common source of leaks into the room below. Resealing properly keeps water where it belongs.
Windows and doors
Internal joints between frames and plaster often crack as a new house dries. We remove cracked sealant and apply a flexible one.
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 matched to the joint and its conditions.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How the visit works
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the job takes a few hours for most snagging lists, longer for a run of plots in most cases. In Shepherd's Bush, as in most of London, parking needs a little planning. A visitor permit or a nearby bay makes the visit run more smoothly.
- We go through the snagging list or plot schedule and agree the joints to do.
- Failed or untidy sealant is cut out completely.
- We clean off dust from the build and prime the surfaces where the product needs it.
- A sealant chosen for each area goes in and is tooled smooth.
- Each area is checked and left with its cure time.
Getting ready for the visit
- Mention any tricky access
- For indoor joints, keep the area dry beforehand if you can
- Clear the area around the work
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you’re ready, call 0345 464 0079 or drop us an email.
Advice
When to call us in Shepherd's Bush
Fresh sealant can be knocked or cut by trades finishing off. A bead disturbed before it has cured may never seal properly and it shows once the home is in use.
Any of these means the joints need attention:
- Joints pulling apart as timber shrinks
- Gaps behind new kitchen upstands
- Leaking shower tray seals in a new home
- Untidy sealant flagged on a snagging list
As a London address, Shepherd's Bush can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Before you book anyone
- The length of the guarantee
- When the joint can take water or movement
- Who turns up on the day
- What happens if they find a problem under the old sealant
Also near Shepherd's Bush
What else we do in Shepherd's Bush
Why deal with it now?
The builder is usually the first port of call while the snagging or warranty period runs. If it’s slow, or the same joint keeps failing, a proper reseal from a specialist is the next step. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Shepherd's Bush, the repair is bigger than a sealant job.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs. Ask us for a quote and we’ll explain what it covers.
Why choose Mr Mastic in Shepherd's Bush
- Fully insured
- 180+ five-star Google reviews
- A sealant colour to suit the surroundings
- ARBOMaster approved applicator
Read what affects the cost or our reviews.