Greater London · England
Farthing Street New Build Mastic
New build mastic across Farthing Street and nearby, with every bit of old sealant taken out first.
- Gaps opening as the house dries out and settles
- Sealant work across a run of new homes
- New-build shower sealant that has already split
New build mastic in Farthing Street, done properly
We carry out plot mastic and second-fix sealing for builders, and snagging reseals for new-home owners. In both, preparation makes the difference since hurried prep is behind a lot of new-build failures. If you have smeared, uneven beads picked up at snagging and internal frame sealant that has split, we can put it right, on plot handovers, bathrooms & en suites and show homes alike.
London homes range from new-build flats to period conversions with new floors laid over old boards. Every joint between floor, skirting and threshold has to cope with some movement, in Farthing Street as anywhere.
Every job is covered by a one-year guarantee.
- Location
- Farthing Street (BR6)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
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 fails, we can still redo it.
Quotes for new build mastic in Farthing Street
You’ll get a clear quote before we start. It’s based on:
- Access and height
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
- When we can work, for business premises
Leaving a failed joint normally makes the job bigger, not smaller, as water and mould keep getting in. If you are unsure, ring 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.
What we need to know
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Where the job is, and your postcode
- How many joints, rooms or windows are involved
- Photos by email, if that’s easy
- What the problem is, such as mould, gaps, leaks or cracking
Need a quote? Please ring 0345 464 0079 or send us an email with a few details. We will explain what we’d do and give you a clear quote before we start.
Keeping the joints in good condition
So the new joints stay in good condition:
- Avoid scourers and strong chemicals on sealant
- Resist patching a failed seal with a tube from the DIY shop
- Look at the sealant regularly in the first couple of years
- Raise failed sealant with the developer while you’re covered
Keep photos of the joints and any snagging correspondence with your builder. It helps if anything else comes up during the warranty period.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Catching it early keeps the fix to the sealant.
Your questions about new build mastic in Farthing Street
Do you work for landlords with property near Orpington station?
Yes. We work for landlords and letting agents as well as householders. Just call 0345 464 0079 or email us with the address and what needs doing, and we’ll give you a clear price.
Is parking an issue for new build mastic in Farthing Street?
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 I have to be there?
For indoor joints, yes, someone needs to let us in. Once we have agreed the job, you don’t need to watch us work.
Should I wait before resealing?
That depends on the joint. Failed seals in wet areas need doing now, but cosmetic gaps can wait for movement to slow.
Will you just run a new bead over the existing one?
No. Over-sealing traps mould and water and soon fails. We remove every bit of the old bead before resealing.
Can you work on commercial sites?
Yes. Hotels, offices and other businesses use us, and we’re fully insured.
Do you come to Farthing Street?
Yes, we do. Farthing Street is part of the area we cover.
Why does sealant fail so quickly in new builds?
New homes dry out and move in their first couple of years, and sealant is often rushed onto dusty, unprimed surfaces. Both lead to early failure.
Towns and villages near Farthing Street
Also in Farthing Street
Common problems we fix in Farthing Street
The first winter with the heating on dries a new home quickly. Gaps open along skirting, frames and worktops and cracked sealant shows up.
The most common problems we see are:
- Smeared, uneven beads picked up at snagging
- Sealant work across a run of new homes
- Sealant that never bonded to the surface
- Kitchen sealant that has pulled off the wall
For new homes near Orpington station, it’s worth checking the sealant early, while snags are still fresh.
What your quote should include
- How the colour is chosen
- Which sealant they’ll use, and why
- Is the old sealant removed completely?
- What the cure time is
Surface by surface
Kitchens
As a new house dries, worktops and walls shift a little, which opens gaps along the back. We reseal them with a flexible sealant.
Skirting and floors
Floors and skirting move as the house dries and the heating runs. We use a flexible product rather than caulk in a colour to suit.
How it works
On the day, we look over the joints with you first. We protect the surfaces around the joints before any work starts. The work generally takes a few hours for most snagging lists, longer for a run of plots. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Farthing Street. It helps if you can point us to a visitor permit or a bay close to the door.
- First we work through your snagging list or plot schedule with you.
- The old bead comes out in full, with no layer left behind.
- 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.
Preparing for the visit
- Tell us about any water getting in
- Where the joints are inside, avoid wetting them before we arrive
- Clear the area around the work
How to get a quote
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job.
Related advice
Work for landlords, hotels and businesses
Landlords and letting agents in Farthing Street can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order before the next move-in.
If you manage several properties in or around Farthing Street, several properties can be quoted together. Send us the addresses and the work at each.
New build mastic around Farthing Street
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. Much of London’s new housing is flats in larger developments, where snagging may go through the developer or managing agent.
Farthing Street is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Farthing Street is about 4 miles south-west of Orpington, in Greater London. Every kind of property in Farthing Street is covered for new build mastic. Every job comes with our 12-month guarantee. Farthing Street is one of 764 towns and villages in Greater London we cover for new build mastic. We also work in London, around 12 miles away.
Jobs for new build mastic in BR6 is quoted and booked the same way as anywhere else. If you need new build mastic at a property on Farthing Street, New Road Hill and Orange Court Lane or a nearby road, our applicators can take on the job. If you’re just outside Farthing Street, we cover Downe (1 mile south-east), Leaves Green (1 mile south-west), Hazelwood (1 mile south-east), Keston (1 mile north-west) and Farnborough (1 mile north-east). Within a short drive, we also cover London (12 miles north-west), City of Westminster (15 miles north-west), Marylebone (15 miles north-west), Kensington (15 miles north-west), St Pancras (14 miles north-west) and Shoreditch (14 miles north-west).
What’s near Farthing Street
In Farthing Street, that means homes and buildings near Darrick Wood School, South Park and The Queens Head pub and the streets around them. The nearest railway station is Orpington station, roughly 2.6 miles north-east of the centre. Nearby you will also find Princess Royal University Hospital (1.4 miles north) and Crofton Roman Villa (2.5 miles north-east). Green spaces nearby include Betsom's Hill and West Kent Golf Course nature reserve.