Greater London · England
New-build mastic & snagging in Upton, Greater London
New build mastic in Upton from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Frame joints opening as the plaster dries
- Skirting joints opening in the first winter
- Untidy sealant flagged on a snagging list
About our new build mastic in Upton
Snagging sealant properly means taking the failed bead out completely. Fresh silicone cannot bond to the old layer, so it all comes out before we clean, dry and reseal. If you have gaps behind new kitchen upstands and leaking shower tray seals in a new home, we can help.
From brand-new flats to converted terraces with new flooring, London has every kind of floor. Every joint between floor, skirting and threshold has to cope with some movement.
Whatever the size of the job, you get the same 12-month guarantee in Upton and across Greater London.
- Place
- Upton (E7, E13, E15)
- Wider area
- Greater London
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Landlord and commercial work in Upton
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Landlords and letting agents in Upton can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
New build mastic around Upton
London and the South East are among the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent.
Upton is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Upton is about 1 mile north of Plaistow, in Greater London. Whether you are in the middle of Upton or further out, new build mastic is available for homes and businesses alike. Across Greater London, we cover 764 places, and Upton is one of them. For nearby work, see our London page (6 miles or so).
Postcode districts we cover here for new build mastic: E7, E13 and E15. We cover properties on May Road, West Road and Park Road and the roads around them. Neighbouring places we cover for new build mastic include Upton Park (1 mile south-east), Greengate (1 mile south), West Ham (1 mile south-west), Forest Gate (1 mile north) and Plashet (1 mile east). Within a short drive, we also cover London (6 miles south-west), City of Westminster (8 miles west), Marylebone (8 miles west), Kensington (10 miles west), St Pancras (6 miles west) and Shoreditch (5 miles west).
Near you in Upton
In Upton, that means homes and buildings near St Bonaventure's RC School, West Ham Park and Spotted Dog pub. The closest station to Upton is Forest Gate station, roughly 0.8 miles north of the centre. Nearby you’ll also find Queen Mary's Hospital for the East End (1 mile west) and Greenwich Castle (4.4 miles south). Open spaces near Upton include Hollow Pond and Tower Hill.
Also near Upton
Also in Upton
Why deal with it now?
A hairline gap at a skirting can wait, but a leaking seal can’t. If you are unsure which you have, phone 0345 464 0079 or send us an email with photos and we’ll give you a straight answer. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and once it shows in Upton, the repair is bigger than a sealant job.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we will explain what it covers.
Why choose Mr Mastic in Upton
- Old sealant always removed completely
- Rated 4.9 stars on Google
- Sanitary silicone with an anti-fungal additive in wet areas
- A choice of colours where the product allows
Common problems we fix in Upton
The first winter with the heating on dries a new home quickly. Skirting, frames and worktops pull away slightly.
These are the problems we are asked about most:
- Shower seals failing in the first year or two
- Gaps behind new kitchen upstands
- Beads laid onto grit and dust from the build
- Untidy sealant flagged on a snagging list
For new homes near Forest Gate station, it’s worth checking the sealant early, while snags are still fresh.
What your quote should include
- Whether you can choose the colour
- What happens if the job turns out different
- Whether they seal over old material or remove it
- Is VAT in the price?
What the job involves on each surface
Skirting and floors
Wet-area floor joints need a flexible seal. We seal them with a sealant suited to wet areas.
Kitchens
Sink joints are wet all the time. A kitchen sealant goes in there, food-safe where it’s needed.
Questions from Upton
Do you cover Upton for new build mastic?
Yes, Upton is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or send us an email and tell us what needs doing.
Can you help a landlord with a rental near Forest Gate station?
Yes. We work for landlords and agents as well as homeowners. You can call 0345 464 0079 or email us with the details for a clear quote.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
Can you do plot mastic on a new development?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send the schedule and any specification and we’ll give you a quote.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Will you just run a new bead over the existing one?
No. We always remove the existing bead, then clean and prime the joint, and a new bead applied.
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Structural cracks in walls or ceilings
- Your warranty claim itself, which is between you and the builder
- Baths and trays that move too much for sealant to cope with
If in doubt, phone 0345 464 0079 or drop us an email and we will say what we think before you book.
Where we work in Upton
- Kitchens
- Windows & doors
- Bathrooms & en suites
- Skirting & floors
- Plot handovers
- Show homes
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
How the visit works
Every visit runs the same way: we check the joints, protect the area around them, do the work and tidy away. Most jobs take a few hours in a single home. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Upton. It helps if you can point us to a visitor permit or a bay close to the door.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- The old bead comes out in full, with no layer left behind.
- Each joint is cleaned of dust and grit, then primed if required.
- We apply a sealant that suits each joint and tool it to a neat finish.
- Finally, each room is checked and you’re given the cure time.
How to prepare
- Keep children and pets away from the work area
- Tell us about any previous sealing or DIY attempts
- Mention any parking rules near the property
How to get a quote
If you’re in Upton and need new build mastic, phone 0345 464 0079 or send us an email. Tell us what the problem is and where, and you’ll get a clear quote before work begins.