Greater London · England
New Build Mastic in Crofton Park
New build mastic across Crofton Park and nearby, with old sealant always removed completely and a 12-month guarantee.
- Kitchen sealant that has pulled off the wall
- Smeared, uneven beads picked up at snagging
- Cracked sealant around new window and door frames
New build mastic for homes and businesses in Crofton Park
Across Crofton Park, we work for both new-home owners and the builders handing those homes over. 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. If you’re dealing with beads laid onto grit and dust from the build and kitchen sealant that has pulled off the wall, we can help, on windows & doors, plot handovers and bathrooms & en suites alike.
Across London, commercial floors have movement joints that break down under heavy foot traffic, while new homes need a neat, sound finish around frames, baths and kitchens before handover, in Crofton Park and beyond.
Your job is guaranteed for a year, as with all our work.
- Where
- Crofton Park (SE4, SE6, SE23)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Baths and trays that move too much for sealant to cope with
- Broken tiles or a split tray
- Leaks from pipes, valves or wastes, which need a plumber
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
Where we work in Crofton Park
- Kitchens
- Plot handovers
- Show homes
- Bathrooms & en suites
- Windows & doors
- Skirting & floors
Your questions about new build mastic in Crofton Park
Do you work for landlords with property near Crofton Park station?
Yes. We work for letting agents and landlords as well as homeowners. Just phone 0345 464 0079 or send us an email with the address and what needs doing, and we will send you a clear quote.
Is Crofton Park in your area for new build mastic?
Yes, Crofton Park is within the area we cover. We work across 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 hotels and businesses?
Yes, regularly. We can plan bigger jobs in stages to suit the site.
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.
What information do you need?
Let us know what needs doing and where, with photos by email if possible. We will ask anything else we need to know.
Can new sealant go on top of the old bead?
No. Fresh silicone does not stick to the old layer, so it soon lifts and traps water. We cut the old bead out completely.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected, and we clear up when we are done.
Is there any odour?
Some sealants have a smell while they cure, which fades as it sets. Opening a window helps.
Do you need new build mastic in Crofton Park?
Fresh sealant can be knocked or cut by trades finishing off. A bead disturbed before it has cured may never seal properly and it shows once the home is in use.
Signs it’s time to call us include:
- Gaps opening as the house dries out and settles
- Sealant applied over dusty or wet surfaces
- Messy sealant that spoils new finishes
- Cracked sealant around new window and door frames
Crofton Park is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
Before you book anyone
- What preparation is included
- What happens if they find a problem under the old sealant
- Whether VAT is included
- How long the guarantee is
How the visit works
At the end, we look at the finished work together and tell you how long to leave it. The work normally takes a few hours for most snagging lists, longer for a run of plots, depending on the amount of work. 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.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Tell us about any water getting in
- Mention any parking rules near the property
- Keep children and pets away from the work area
Get a quote
We quote each job on its own. Just call 0345 464 0079 or email us with the details and send photos if you have them.
Advice
Nearby places to Crofton Park
Also in Crofton Park
Different surfaces, different methods
Plot handovers
Taking time over preparation reduces return visits. We clean out building dust before sealing and prime where the product needs it.
Kitchens
Beside the sink, the joint takes water every day. A kitchen sealant goes in there suited to the job.
Landlord and commercial work in Crofton Park
For anyone letting property in or around Crofton Park, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
New build mastic around Crofton Park
Rainfall in the South East is lower than in much 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.
For new homes near Crofton Park station, it’s worth checking the sealant early, while snags are still fresh.
Crofton Park is about 1 mile south of New Cross, in Greater London. Crofton Park gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 764 places across Greater London, large and small.
Our applicators cover all of the SE4, SE6 and SE23 postcode area for new build mastic and the streets around it. Whether your property is on Ivy Road, Nash Road and Lindal Road or anywhere close by, our applicators can take on the job. Close by, we work in Brockley (1 mile north-west), Ladywell (1 mile east), Honor Oak (1 mile west), Forest Hill (1 mile south-west) and Nunhead (1 mile north-west). Further out, we also cover London (4 miles north-west), City of Westminster (7 miles north-west), Marylebone (7 miles north-west), Kensington (8 miles north-west), St Pancras (6 miles north-west) and Shoreditch (5 miles north).
Around Crofton Park
Locally, jobs take us to homes and businesses close to Blythe Hill Tavern, Prendergast Ladywell School and Blythe Hill Fields, among other places. There’s a railway station in Crofton Park itself: Crofton Park station. Well-known places in the area include University Hospital Lewisham (0.7 miles east) and Horniman Museum and Gardens (1.4 miles south-west). The countryside around Crofton Park includes One Tree Hill and Knight's Hill.
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Photograph failed sealant before it’s redone
- Get a leaking seal dealt with straight away
- Keep water off fresh sealant until it has cured
- Clean sealant with mild detergent, not abrasives
Follow the cure time we give you before the area gets wet. Most silicones need around a day before water reaches them.
Mould takes hold quickly in sealant that has gaps or lifted edges. Resealing before mould gets in keeps the job straightforward.
Can I do it myself?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What a professional job adds is preparation and the right 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.