Greater London · England
Old Oak Common New Build Mastic
New-build sealant joints in Old Oak Common need attention? We remove the old material, prepare the joints and seal them properly.
- Messy sealant that spoils new finishes
- Gaps opening as the house dries out and settles
- Sealant that never bonded to the surface
Do you need new build mastic in Old Oak Common?
If plaster or screed was still damp when it was sealed, the bond suffers. On a busy site, joints aren’t always given time to dry first.
Most people get in touch when they notice something like this:
- Cracks appearing as a new home settles
- Second-fix sealing on new plots
- Gaps between new skirting and floors
- New-build shower sealant that has already split
For new homes near Willesden Junction station, it’s worth checking the sealant early, while snags are still fresh.
What your quote should include
- Is VAT in the price?
- What insurance they hold
- How the joint is cleaned and prepared
- Which colour the sealant will be
New build mastic in Old Oak Common
Dust is the enemy of new-build sealant. We clean every joint thoroughly and prime where the surface and product need it, so the new bead bonds properly. Typical jobs include cracked caulk along new skirting and sealant that never bonded to the surface, on skirting & floors, bathrooms & en suites and kitchens.
New flats are going up across London, many of them in larger developments. Snagging there often goes through the developer or managing agent, and shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Place
- Old Oak Common (NW10, W3, NW26)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- A clear price before we start
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Also near Old Oak Common
What else we do in Old Oak Common
The process
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from a few hours to several days, depending on the number of plots. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. If the building has a concierge, managing agent or access rules, tell us when you book.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Mention any parking rules near the property
- Let us know about earlier repairs to the joints
- On commercial sites, let us know about site rules
Ask for a quote
There’s no standard price list, because every job is different. Instead, we send you a clear quote for your job. To get started, ring 0345 464 0079 or email us.
Read more
Landlords, agents and businesses in Old Oak Common
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Housing providers, facilities teams and property managers book us too in Old Oak Common and across Greater London. Several sites can go on one quote, and we’re fully insured.
Leave it or put it right?
Water getting past a failed seal in a new build reaches walls and floors that are still settling. Dealing with it early keeps the damage away from ceilings, floors and finishes. Converted houses in London often have a bathroom above someone else’s living room, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
Doing several joints on one visit is usually more efficient than separate visits. We’ll give you a clear quote for the lot.
Why Old Oak Common customers choose us
- Rated 4.9 stars on Google
- Arbo and Everbuild products
- Colour agreed with you before any work starts
- We never seal over old sealant
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
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.
Joints and finishes in Old Oak Common homes
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. London and the South East are among the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
As a London address, Old Oak Common can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
Old Oak Common is about 1 mile south of Harlesden, in Greater London. Wherever you are in the NW10 postcode area, our applicators can take on new build mastic. Our area takes in 764 places across Greater London. London is on our list too, around 7 miles away.
We cover every part of the NW10, W3 and NW26 postcode area for new build mastic and the streets around it. Whether your property is on Atlas Road, Tubbs Road and Waldo Road or anywhere close by, we can help. We also cover the places around Old Oak Common: College Park (1 mile north-east), Harlesden (1 mile north), Kensal Green (1 mile east), Park Royal (1 mile west) and North Kensington (1 mile east). We also work in nearby towns such as London (7 miles east), City of Westminster (4 miles east), Marylebone (4 miles east), Kensington (3 miles south-east), St Pancras (6 miles east) and Shoreditch (7 miles east).
Landmarks near Old Oak Common
Typical jobs here are in homes near Green Man Public House, Library for Iranian Studies and Star Chamber Academy, among other places. Nearby too are Little Wormwood Scrubs (0.8 miles east) and St Claudine's Catholic School for Girls (0.8 miles north). Old Oak Common has its own railway station: Willesden Junction station. Other landmarks nearby include Westfield London (1.7 miles south-east) and Hammersmith Hospital (0.8 miles south-east). Open spaces near Old Oak Common include Hanger Hill Wood and Campden Hill.
Common questions in Old Oak Common
Is parking a problem for a job in Old Oak Common?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Do you work for landlords with property near Willesden Junction station?
Yes. We work for landlords and agents as well as homeowners. Just call 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
How long before the joint can be used?
Cure times vary by product. Before we leave, we’ll tell you the cure time.
Where are you based?
Mr Mastic is based in Crawley. Our applicators cover Old Oak Common.
Do you guarantee your work?
Yes: twelve months. If anything is not right with the work within the year, let us know and we’ll sort it.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Why does sealant fail so quickly in new builds?
It’s common, and there are generally two reasons: the house moving as it dries, and sealant that never bonded properly. Cutting it out and resealing properly fixes both.
Are you an approved applicator?
Yes. We’re approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Follow the cure time we give you
- Ventilate bathrooms well, especially in the first year
- Don’t seal over failed sealant yourself
- Wipe joints with warm soapy water
Wipe the sealant with warm soapy water. Avoid abrasive pads and strong solvents, which can damage the surface.
A seal that splits early is often a sign of movement. Have it resealed, and the tray or bath checked, before it gets worse.
What affects the quote in Old Oak Common
The price is agreed before any work begins. It’s based on:
- The type of sealant required
- When we can work, for business premises
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we will go through it with you.
Asking for a quote
Before you ask for a quote, have a think about:
- A few pictures by email, if you can
- If someone has resealed it before
- The address or postcode of the job
- How many joints, rooms or windows are involved
Want a quote for new build mastic? Please ring 0345 464 0079 or email us and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.