Greater London · England
Poplar New Build Mastic
Specialist new build mastic for Poplar: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Sealant applied over dusty or wet surfaces
- Smeared, uneven beads picked up at snagging
- Sealant work across a run of new homes
Common problems we fix in Poplar
New homes are full of moisture from plaster, screed and concrete, which takes a year or two to dry out. Drying timber shrinks and pulls joints apart and the sealant has to cope with the movement.
These are the problems we’re asked about most:
- Gaps opening as the house dries out and settles
- Sealant work across a run of new homes
- Beads laid onto grit and dust from the build
- Messy sealant that spoils new finishes
Poplar is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Questions to ask before booking
- What preparation is included
- What guarantee comes with the work
- How the colour is chosen
- What happens if the job turns out different
How we handle new build mastic in Poplar
For builders and developers, we work through plots to the schedule you give us. Bathrooms, en suites, kitchens, frames and skirting are sealed ready for handover with a sealant suited to each area. If you have kitchen sealant that has pulled off the wall and new-build shower sealant that has already split, we can put it right, whatever the surface.
Much of London’s new housing is flats in larger developments. In a new development, snags are often reported through the developer or the managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Location
- Poplar (E14, SE16, E22)
- Region
- Greater London
- Cover
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Different surfaces, different methods
Plot handovers
We work through plots to your schedule, sealing each room ready for handover. Each joint is cleaned and primed where needed to keep callbacks down.
Skirting and floors
Wet-area floor joints need a flexible seal. We seal them with a sealant suited to wet areas.
Aftercare tips
After the cure time, these simple habits help:
- Wait for the cure time before using a resealed shower
- Wipe joints with warm soapy water
- Record problems with dated photos
- Use the extractor fan every time you shower
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries and can be resealed later.
A seal that splits early is often a sign of movement. Getting it resealed properly, and any movement checked, stops it recurring.
FAQs for Poplar
I let a flat near Canary Wharf station. Can you help?
Yes, rental work is part of what we do. Just ring 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear quote.
Do you cover Poplar for new build mastic?
Yes, Poplar is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
How much does new build mastic cost in Poplar?
Size, access and the old material all affect the cost. Ask us for a quote.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
Can I add another job to the visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we have been doing sealant work for more than 20 years.
Is it worth resealing while the house is still settling?
Where water is getting through, don’t wait. Hairline cosmetic gaps can wait until the house has settled.
Landlords, agents and businesses in Poplar
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured for the work.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
Should I try it myself first?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
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 Poplar
There’s no set price list, because no two jobs are the same. What we look at:
- How many rooms, windows or areas are involved
- The size of the job
- Working hours on commercial sites
- Access and height
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will go through it with you.
Helping us quote
What to tell us when you ask for a quote:
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
- The rough size of the job
- If it’s domestic, commercial or a hotel
For a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. You will have a clear quote before any work starts.
Other services in Poplar
How it works
Every visit runs the same way: we look at the joints together, mask and protect the surrounding surfaces, carry out the job and clear up. It generally takes a few hours in a single home. 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.
- 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.
Getting ready for the visit
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
- Keep pets and children clear of the area while we work
Getting a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, phone 0345 464 0079 or drop us an email.
Advice
Joints and finishes in Poplar homes
Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you’ve bought a new home near Canary Wharf station, the sealant around baths, showers and frames is worth checking in the first year or two.
Poplar is about 2 miles south-west of Plaistow, in Greater London. We provide new build mastic to homes and businesses in Poplar and nearby, as part of our work across Greater London. Our area takes in 764 places across Greater London, large and small.
We cover every part of E14, SE16 and E22 for new build mastic and the streets around it. Streets in the area include Market Way, Castor Lane and Dockyard Lane. With the A102 and A1261 close by, Poplar is easy for our applicators to reach. Other places close to Poplar include London Docklands (1 mile south), Canary Wharf (1 mile south-west), Heron Quays (1 mile south-west), Coldharbour (1 mile south-east) and Blackwall (1 mile east). We also work in nearby towns such as London (3 miles west), City of Westminster (6 miles west), Marylebone (6 miles west), Kensington (8 miles west), St Pancras (5 miles west) and Shoreditch (3 miles north-west).
What’s near Poplar
Locally, jobs take us to homes and businesses close to Bartlett Park, Langdon Park Secondary School and Our Lady and St Joseph Catholic Primary School and the streets around them. Poplar has its own railway station: Canary Wharf station. Nearby you’ll also find Museum of the Book (0.8 miles north-west) and Poplar Hospital (0.6 miles north-east). Green spaces nearby include Lavender Pond and St. James's Park Lake.