Greater London · England
Botany Bay New Build Mastic
Professional new build mastic in and around Botany Bay, with old sealant always removed completely.
- Smeared, uneven beads picked up at snagging
- Sealant work across a run of new homes
- Cracked sealant around new window and door frames
New homes and floors in Botany Bay
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, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Botany Bay is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
Botany Bay is about 3 miles south-east of Potters Bar, in Greater London. Across the EN2 area, we cover new build mastic for homes and businesses. 764 places in Greater London are on our list. We also work in London, around 12 miles away.
All of EN2 is covered for new build mastic, from the main roads to the quietest streets. That includes homes and businesses on The Ridgeway and East Lodge Lane and the roads around them. You will find Botany Bay on the A1005, so it’s easy for us to get to. Other places close to Botany Bay include Northaw Valley (1 mile north-west), Cockfosters (2 miles south-west), Grange Park (2 miles south-east), Hadley Wood (2 miles south-west) and World's End (2 miles south). Within a short drive, we also cover London (12 miles south), City of Westminster (11 miles south), Marylebone (11 miles south), Kensington (13 miles south), St Pancras (10 miles south) and Shoreditch (11 miles south).
Near you in Botany Bay
Around Botany Bay, our work takes us to homes and buildings near The Robin Hood pub, Trent Park and Highlands School and the streets around them. For rail, the closest station is Crews Hill station, about 1 mile north-east of the centre. Nearby you will also find Museum of Enfield (2.7 miles south-east) and Chase Farm Hospital (1.2 miles south-east). Not far away are Fir and Pond Woods and Bowyer's Water.
New build mastic in Botany Bay, done properly
Some new-home owners let the house settle before resealing. For small cosmetic gaps, that’s reasonable, but a failed shower or bath seal shouldn’t wait. We work on skirting & floors, bathrooms & en suites and plot handovers, and people most often call us about gaps behind new kitchen upstands and gaps opening as the house dries out and settles.
Much of London’s new housing is flats 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.
Each job carries a 12-month guarantee, large or small.
- Where
- Botany Bay (EN2)
- Wider area
- Greater London
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How to look after the new joints
Aftercare is simple, and it makes a real difference:
- Keep water off fresh sealant until it has cured
- Resist patching a failed seal with a tube from the DIY shop
- Put sealant faults on your snagging list early
- Do not wait for the house to settle if water is getting through
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Left alone, a small crack can become a leak in a busy bathroom.
Towns and villages near Botany Bay
Also in Botany Bay
Leave it or put it right?
A failed shower or bath seal in a new home lets water into floors and walls that are still drying out. Resealing promptly protects the new finishes around it. In a flat in Botany Bay, failed sealant seldom stays inside your own four walls: water can reach the neighbours below, and gaps in fire-rated joints affect the whole building.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why us?
- Anti-fungal sanitary silicone in wet areas
- Old sealant always removed completely
- You choose the colour before work begins
- A sealant colour to suit the surroundings
When it is not the sealant
Before you book, it’s worth knowing the limits:
- Damaged fittings that need replacing
- Disputes or warranty claims with your builder
- Leaking fittings rather than failed sealant
If you’re not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer before you book.
Joints and surfaces we work on
- Windows & doors
- Plot handovers
- Kitchens
- Show homes
- Skirting & floors
- Bathrooms & en suites
How it works
We keep the work tidy and contained to the area we’re working on, so you can get on with your day. The job generally takes a few hours for most snagging lists, longer for a run of plots, and we tell you how long to leave it before we go. Many London jobs are in flats, so we come ready for stairs, narrow hallways and shared entrances. Mention any building rules, key holders or managing agents when you book.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely, with no layer left behind.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
How to prepare
- Tell us if parking is tricky
- Mention if the joints have been sealed before
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, ring 0345 464 0079 or email us.
Related advice
How the job changes by surface
Windows and doors
On new builds, external frame sealant can be patchy. We reseal it with a weatherproof, flexible sealant.
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. A proper reseal keeps water in the tray.
Do you need new build mastic in Botany Bay?
On many sites, sealant goes on in the final rush before handover. Dusty, unprimed joints are common, so the bead never bonds properly.
Signs it’s time to call us include:
- Gaps opening as the house dries out and settles
- Shower seals failing in the first year or two
- Worktop and upstand sealant coming away
- Plot mastic for developers ahead of handover
If you’ve bought a new home near Crews Hill station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- Who does the work, and how experienced they are
- Whether they seal over old material or remove it
- Are they insured?
- When the joint can take water or movement
Botany Bay: your questions answered
Can you do new build mastic in Botany Bay?
Yes, Botany Bay is within the area we cover. Our work covers London and the South East. Just call 0345 464 0079 or send us an email with a few details of the job.
Do you work for landlords with property near Crews Hill station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear quote.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Do you take on second-fix sealing for builders?
Yes. We take on second-fix sealant work across new plots. We clean and prime joints properly to keep callbacks down.
Do you do commercial work?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Why has my new-build shower seal failed already?
Lots of new homes see sealant crack early, because the house is drying and settling. Poor preparation at handover adds to it.
Are you fully insured?
Yes. We’re fully insured.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll tell you what we’re using.
Quotes for new build mastic in Botany Bay
Every job gets its own quote. These are the things that affect it:
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
- When we can work, for business premises
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote and we will talk you through it.
What to tell us for a quote
When you contact us, these details help:
- Where the property is
- Whether it’s a home or a business
- How we’d reach the joints
- Photos by email, if that is easy
For new build mastic in Botany Bay, call 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.