Greater London · England
New-build mastic & snagging in Bankside, Greater London
New build mastic for Bankside and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Worktop and upstand sealant coming away
- Sealant applied over dusty or wet surfaces
- Skirting joints opening in the first winter
How the job changes by surface
Bathrooms and en suites
New-build bathrooms and en suites are where sealant fails most often. We cut out the failed bead, clean and prime, and reseal with anti-fungal sanitary silicone.
Skirting and floors
Floors and skirting move as the house dries and the heating runs. Caulk cracks; a flexible sealant moves with it.
How we handle new build mastic in Bankside
New homes move as they dry out. Timber dries and shrinks, and baths and trays settle, so sealant that was laid quickly before handover often cracks. We work on plot handovers, show homes and windows & doors, and people most often call us about cracked sealant around new window and door frames and untidy sealant flagged on a snagging list.
New flats are going up across London, many of them in larger developments. Snagging there often goes through the developer or managing agent, and failed shower seals, open skirting joints and gaps at thresholds are typical.
You are covered for a year from the day we finish. If anything is not right with it, call 0345 464 0079 or email us.
- Place
- Bankside (SE1, EC4Y, EC4V)
- Region
- Greater London
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Bankside
What else we do in Bankside
New build mastic around Bankside
Much of London’s new housing is flats in larger developments, where snags may need reporting through the developer or the managing agent. 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.
Bankside is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. If you’ve bought a new home near London Blackfriars station, the sealant around baths, showers and frames is worth checking in the first year or two.
Bankside is about 1 mile north of London, in Greater London. For new build mastic in and around Bankside, it’s easy to get a quote: please phone 0345 464 0079 or drop us an email. We cover Greater London from our Crawley base. Our Greater London coverage runs to 764 places, and Bankside is one of them.
Postcode districts we cover here for new build mastic: SE1, EC4Y and EC4V. Streets in the area include Bear Lane, Bush Lane and Swan Lane, and we cover them all. Bankside sits on or near the A201 and A300. Nearby, we also carry out new build mastic in Blackfriars (1 mile north-west), Temple (1 mile north-west), Temple Bar (1 mile north-west), Waterloo (1 mile south-west) and Smithfield (1 mile north). Further out, we also cover Kensington (4 miles west), Walthamstow (6 miles north-east), Hampstead (5 miles north-west), Ruislip (14 miles west), Brompton (3 miles west) and Stockwell (3 miles south).
Around Bankside
Typical jobs here are in homes near St Mary-at-Hill, Bernie Spain Gardens and St Andrew's and St John's Church of England Primary School, among other places. Other local landmarks include Barts Health Archives (0.6 miles north), The Cathedral School of St Saviour and St Mary Overy (0.5 miles south-east) and Founders Arms (under half a mile west). Bankside has its own railway station: London Blackfriars station. Well-known places in the area include Royal Waterloo Hospital for Children and Women (0.6 miles west) and Gabriel's Wharf (within half a mile west). For a walk, there’s Ludgate Hill and Barnsbury Wood.
What affects the cost of new build mastic
For a quick quote, just ask. What matters most is:
- The amount of work
- Mould in or behind the old joints
- When we can work, for business premises
- The type of sealant required
Commercial jobs are quoted on the same basis as homes: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll explain what it covers.
What we need to know
When you call or email, these details help:
- How many joints, rooms or windows are involved
- Whether it’s a home or a business
- Where the job is, and your postcode
- What the problem is, such as mould, gaps, leaks or cracking
For new build mastic in Bankside, phone 0345 464 0079 or drop us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Bankside questions
Can you do new build mastic in Bankside?
Yes. We work across London and the South East, and Bankside is part of that. Just ring 0345 464 0079 or send us an email with a few details of the job, and we will send you a clear quote.
I let a flat near London Blackfriars station. Can you help?
Yes. We work for letting agents and landlords as well as householders, and several properties can go on one quote. Just phone 0345 464 0079 or email us with the address and what needs doing, and we will send you a clear quote.
Is there a guarantee?
Yes. All our work carries a one-year guarantee.
Are you insured?
Yes. We’re fully insured.
Can I do 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.
My new home is still under warranty. Should I contact you?
Start with the builder if you’re in the snagging or warranty period. If it is not resolved, we can reseal it properly.
Do you work for developers?
Yes. We seal plots to the developer’s programme ready for handover. Get in touch with the number of plots and the scope for a clear quote.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
How the visit works
Every visit runs the same way: we check the joints, protect the area around them, carry out the job and clear up. It usually takes anything from a few hours to several days, depending on the number of plots. In Bankside, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- Each joint is checked for movement before any work starts.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
How to prepare
- Let us know about stairs, lifts or work at height
- For business premises, tell us about site rules or sign-in
- Tell us about any water getting in
Get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Read more
Why act early in Bankside
Sealant done properly at handover means fewer callbacks. Snagging visits for failed sealant cost time on every plot, and they’re avoidable with good preparation. 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.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re unsure, call 0345 464 0079 or email us and we’ll give you an honest view and a quote.
Why book with us
- 4.9 on Google from 180+ five-star reviews
- We leave the area clean and tidy
- More than 20 years in sealant work
- We are fully insured
Read our cost guide or customer reviews.
Landlord and commercial work in Bankside
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Landlords and letting agents in Bankside can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
What we cannot put right
In fairness, some problems need a different trade:
- Broken tiles or a split tray
- Baths and trays that move too much for sealant to cope with
- Disputes or warranty claims with your builder
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before you book.
Where we work in Bankside
- Windows & doors
- Skirting & floors
- Show homes
- Bathrooms & en suites
- Kitchens
- Plot handovers