Greater London · England
New Build Mastic in Kensal Town
Plot mastic for developers and snagging failed sealant in new homes for Kensal Town, backed by a one-year guarantee. Call for a quick quote.
- Plot mastic for developers ahead of handover
- Frame joints opening as the plaster dries
- Joints pulling apart as timber shrinks
Why it’s worth doing now in Kensal Town
DIY kits do not solve the main problems with new-build sealant: dust, no primer and old sealant left in the joint. Cutting out, cleaning and priming are what make the difference. Damp from a failed joint spreads quietly in older London brickwork and timber, and once it shows in Kensal Town, the repair is bigger than a sealant job.
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and give you a clear price before we start.
Why Kensal Town clients choose us
- 20+ years of sealant experience
- Sanitary silicone with an anti-fungal additive in wet areas
- Full insurance on every job
- Colour agreed with you before work begins
Read what affects the cost and our reviews.
New build mastic for homes and businesses in Kensal Town
A new house keeps drying out and settling for its first couple of years. Timber dries and shrinks, and baths and trays settle, and sealant applied in a hurry at handover can split. We work on kitchens, show homes and skirting & floors, and the jobs we see most are skirting joints opening in the first winter and gaps behind new kitchen upstands.
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, in Kensal Town and beyond.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Kensal Town (W10, W9, W11)
- Region
- Greater London
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Kensal Town
Other services in Kensal Town
When to call us in Kensal Town
The first winter with the heating on dries a new home quickly. Gaps open along skirting, frames and worktops and cracks appear in the sealant.
If you can see any of these, it’s time to have the joints looked at:
- Gaps between new skirting and floors
- Cracked sealant around new window and door frames
- Kitchen sealant that has pulled off the wall
- Gaps opening as the house dries out and settles
Kensal Town is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Before booking anyone
- How the colour is chosen
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why
- How much experience the applicator has
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
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.
What happens on the day
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before we start. Most jobs take a few hours for most snagging lists, longer for a run of plots. In Kensal Town, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- We start by going through the snagging items or plot schedule with you.
- Every bit of the old builder’s sealant is cut out down to clean surfaces.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Keep children and pets away from the work area
- Tell us about any previous sealing or DIY attempts
Get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved.
Advice
New homes and floors in Kensal Town
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
If you’ve bought a new home near Queens Park (London) station, the sealant around baths, showers and frames is worth checking in the first year or two.
Kensal Town is about 2 miles north of Kensington, in Greater London. Across the W10 area, we cover new build mastic for homes and businesses. Kensal Town is one of 764 places in Greater London where we work.
Our applicators cover all of W10, W9 and W11 for new build mastic and the streets around it. Whether your property is on Peach Road, Parry Road and Barlby Road or a nearby road, we can help. Kensal Town sits on or near the A4207, so getting to you is simple. Close by, we work in North Kensington (1 mile west), Notting Dale (1 mile south), Kensal Rise (1 mile north-west), Queen's Park (1 mile north-east) and Kensal Green (1 mile north-west). Within a short drive, we also cover London (5 miles east), City of Westminster (3 miles east), Marylebone (3 miles east), St Pancras (4 miles east), Shoreditch (6 miles east) and Walthamstow (9 miles north-east).
What’s near Kensal Town
Locally, jobs take us to homes and businesses close to All Saints Catholic College, Emslie Horniman's Pleasance and Maida Vale School and the streets around them. The nearest railway station is Queens Park (London) station, roughly 0.7 miles north. A little further out are Westfield London (1.2 miles south-west) and Paddington General Hospital (0.5 miles east). Not far away are Campden Hill and Greville Place nature reserve.
Kensal Town questions
Can you do new build mastic in Kensal Town?
Yes. Our work covers London and the South East, and Kensal Town is part of that. You can phone 0345 464 0079 or email us and let us know what needs doing, and we will give you a clear price.
I let a flat near Queens Park (London) station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before any work starts.
Can you do several jobs on one visit?
Of course. Doing several areas at once is usually more efficient, so mention them when you ask for a quote.
Do you work for developers?
Yes. We carry out plot mastic and second-fix sealing for builders and developers. Send the schedule and any specification and we will give you a quote.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Do you use white or clear sealant?
It depends on the joint: white or clear for most sanitary joints, colours for worktops, floors and frames. We agree the colour before any work starts.
How much does new build mastic cost in Kensal Town?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Can I send you my snagging list?
Yes. Photos of each sealant item help us quote. Items that need a plumber, tiler or the builder are flagged.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Keep water off fresh sealant until it has cured
- Open a window or run the fan after bathing
- Resist patching a failed seal with a tube from the DIY shop
- Report sealant problems to your builder during the snagging period
Follow the cure time we give you before the area gets wet. Silicone is usually left for about a day before water reaches them.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small and protects the rest of the house.
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What affects the quote in Kensal Town
The price is agreed before any work begins. It takes into account:
- Mould in or behind the old joints
- Working hours on commercial sites
- How much old sealant there is and how hard it is to remove
- The number of rooms or windows
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or email us for an honest opinion and a quote.
Helping us quote
To help us quote quickly, let us know:
- Access, such as stairs, a lift or height
- A few pictures by email, if you can
- Where the property is
- Whether it has been sealed before
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job, and we will come back to you with a quote.