Greater London · England
Bermondsey New Build Mastic
Specialist new build mastic for Bermondsey: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Messy sealant that spoils new finishes
- Sealant applied over dusty or wet surfaces
- Second-fix sealing on new plots
New build mastic in Bermondsey
We work in new homes and on new-build sites across Bermondsey. Whether it’s one en suite or a run of plots, the method is the same: remove, clean, prime where needed, then a neat new bead. Common call-outs are for worktop and upstand sealant coming away and untidy sealant flagged on a snagging list, across plot handovers, windows & doors and kitchens.
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 Bermondsey as anywhere.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Bermondsey (SE1, SE16, SE5)
- Region
- Greater London
- Cover
- One year on every job
- Quotes
- A clear price before work begins
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Why deal with it now?
If you’re still in the builder’s snagging or warranty period, ask them to put it right first. If it keeps failing or is not dealt with, we can reseal it properly. Damp from a failed joint spreads quietly in older London brickwork and timber, and by the time it shows on a wall or ceiling in Bermondsey, the repair is bigger than the sealant job would have been.
What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before work begins, so you know where you stand.
What you get with us
- Over 20 years’ experience
- Neat joints and a tidy finish
- We never seal over old sealant
- Anti-fungal silicone where joints get wet
What sealant work can’t fix
In fairness, there are a few things sealant will not fix:
- A tray or bath that is not properly supported, until it’s fixed
- Cracked trays, tiles or worktops
- Deciding who is responsible under a builder’s warranty
Not sure which it is? You can call 0345 464 0079 or email us and we will tell you honestly.
Where we work in Bermondsey
- Plot handovers
- Windows & doors
- Kitchens
- Show homes
- Bathrooms & en suites
- Skirting & floors
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
How the visit works
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the number of plots in most cases. For a job in Bermondsey, parking and access are the things to plan: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- Each joint is checked for movement before we start.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- Baths are filled with water, then the new sealant is applied.
- We check every joint and leave you with the cure times.
Before we arrive
- Mention any sign-in or site rules at work premises
- Mention if the joints have been sealed before
- Tell us about any water getting in
Get a quote
We quote each job on its own, so the first step is telling us about yours. Just call 0345 464 0079 or drop us an email with the details and send pictures if you have them.
Related advice
What the job involves on each surface
Kitchens
Beside the sink, the joint takes water every day. We use a sealant suited to kitchens.
Windows and doors
Internal joints between frames and plaster often crack as a new house dries. We cut out the cracked bead and reseal with a flexible sealant.
New build mastic around Bermondsey
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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Bermondsey is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Bermondsey is about 1 mile east of London, in Greater London. Homes, rented property, offices and hotels in Bermondsey can book us for new build mastic. The work is guaranteed for a year. Bermondsey is one of 764 places in Greater London we cover for new build mastic.
Our applicators cover all of SE1, SE16 and SE5 for new build mastic. Streets in the area include Crown Square, Fire Station Square and Layard Square, and we cover them all. Main roads around Bermondsey include the A100 and B202, so getting to you is simple. Neighbouring places we cover for new build mastic include Walworth (1 mile south-west), London (1 mile west), South Bermondsey (1 mile south-east), Surrey Canal (1 mile south-east) and Surrey Quays (1 mile east). Larger places within reach include City of Westminster (4 miles west), Marylebone (3 miles north-west), Kensington (5 miles west), St Pancras (3 miles north-west), Walthamstow (7 miles north) and Hoxton (3 miles north).
Landmarks near Bermondsey
Locally, jobs take us to homes and businesses close to Asylum for the deaf and dumb, St Mary-at-Hill and Harris Academy Bermondsey, among other places. Also close by are Bishopsgate Institute Special Collections and Archives (1.5 miles north), Bermondsey Spa Gardens (under half a mile south) and Simon the Tanner pub (under half a mile west). Bermondsey’s nearest station is London Bridge station, roughly 0.7 miles north-west. Nearby you will also find Fashion and Textile Museum (under half a mile west) and Guy's Hospital (0.7 miles north-west). For a walk, there’s St. James's Park Lake and Bellenden Road Nature Garden.
Towns and villages near Bermondsey
More services for Bermondsey
What we are called out for in Bermondsey
The wrong product is sometimes used in the wrong place: caulk where water collects, or a rigid product on a moving joint. Both fail early.
These are the problems we’re asked about most:
- Cracks appearing as a new home settles
- Second-fix sealing on new plots
- Gaps between new skirting and floors
- Frame joints opening as the plaster dries
If you’ve bought a new home near London Bridge station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- The length of the guarantee
- What happens if the job turns out different
- How the joint is cleaned and prepared
- When the joint can take water or movement
Landlords, agents and businesses in Bermondsey
Landlords and agents in Bermondsey can book us as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Bermondsey: your questions answered
Can you do new build mastic in Bermondsey?
Yes, Bermondsey 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, and we will send you a clear quote.
Is parking a problem for a job in Bermondsey?
Parking in Bermondsey, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available when you book.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
How much does new build mastic cost in Bermondsey?
Every job is different, so each one gets its own quote. For a quick quote, ring 0345 464 0079 or email us and tell us what needs doing and where.
Is it normal for sealant to crack in a new home?
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.
Do you use white or clear sealant?
That depends on what the joint meets: white or clear for most sanitary joints, colours for worktops, floors and frames. We will agree it with you first.
Is there a guarantee?
Yes, always. There’s a 12-month guarantee on every job, large or small.
Who should fix failed sealant in a new build?
Start with the builder if you’re in the snagging or warranty period. Once that is done, or if they won’t put it right, we’ll cut it out and reseal it.