Greater London · England
New-build mastic & snagging in Green Street Green, Greater London
Plot mastic for developers and snagging failed sealant in new homes for Green Street Green, backed by a one-year guarantee. Call for a quick quote.
- Plot mastic for developers ahead of handover
- Cracks appearing as a new home settles
- Sealant that never bonded to the surface
How it works
Every visit runs the same way: we check the joints, protect the area around them, do the work and clear up. It normally takes a few hours for most snagging lists, longer for a run of plots. In a London area like Green Street Green, the main things to plan are parking and access: let us know about parking, the floor we’ll be working on and any lift or shared entrance.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely.
- We clean out the dust and grit left from the build.
- We prime where needed and apply a sealant suited to each joint.
- We tool every joint neatly and tell you when each area can be used.
Before we arrive
- Mention any tricky access
- Let us know about parking restrictions
- On commercial sites, let us know about site rules
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Simply call 0345 464 0079 or send us an email and describe the job, and photos are welcome.
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New build mastic in Green Street Green
A new build should have a neat, sound bead at every joint. When the finish is smeared, patchy or already cracking, it’s worth putting right early, before water gets into the floor or walls. If you have worktop and upstand sealant coming away and cracked caulk along new skirting, we can help, whatever the surface.
London homes range from new-build flats to period conversions with new floors laid over old boards. Wherever a floor meets a wall, a skirting or a threshold, the joint has to allow for movement.
A 12-month guarantee comes as standard, so you’re not left on your own once the job is done.
- Where
- Green Street Green (BR6)
- Wider area
- Greater London
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
For anyone letting property in or around Green Street Green, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and photos by email help.
Also near Green Street Green
Other services in Green Street Green
New build mastic in Green Street Green: local notes
Much of London’s new housing is flats in larger developments, where snagging may go through the developer or 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.
As a London address, Green Street Green can be tricky for parking: let us know about parking bays, permits or a driveway.
Green Street Green is about 2 miles south of Orpington, in Greater London. Homes, rented property, offices and hotels in Green Street Green is covered for new build mastic, old or new, large or small. The work is guaranteed for a year. Our area takes in 764 places across Greater London, large and small. London is on our list too, around 13 miles away.
Every address in BR6 is within our area for new build mastic. Streets in the area include Vine Road, Laxey Road and Shire Lane. Close by, we work in Farnborough (1 mile north-west), Hazelwood (1 mile south-west), Crofton (2 miles north), Downe (2 miles south-west) and Farthing Street (2 miles west). We also work in nearby towns such as London (13 miles north-west), City of Westminster (15 miles north-west), Marylebone (15 miles north-west), St Pancras (15 miles north-west), Shoreditch (14 miles north-west) and Hoxton (15 miles north-west).
Near you in Green Street Green
Around Green Street Green, our work takes us to homes and buildings near Queens Head pub and Hewitt's Chalk Bank. The closest station to Green Street Green is Chelsfield station, roughly 0.9 miles east. Nearby you will also find Orpington Hospital (0.8 miles north-east) and Crofton Roman Villa (1.5 miles north). Open spaces near Green Street Green include Summer Hill and Downe Bank Nature Reserve.
How to look after the new joints
Looking after new joints is easy:
- Check bath and shower seals every few months as the house settles
- Open a window or run the fan after bathing
- Record problems with dated pictures
- Don’t seal over failed sealant yourself
Keep the bathroom ventilated, especially in the first year. Use the extractor fan or open a window after showers so moisture does not sit on the sealant.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant.
How the job changes by surface
Windows and doors
A draught at a new window can be a missed or failed joint. We check and reseal the frame edges.
Show homes
Show homes need sealant that looks right from day one. We lay neat, even beads in colours to suit the finishes.
Questions from Green Street Green
Is parking an issue for new build mastic in Green Street Green?
Parking in Green Street Green, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
I let a flat near Chelsfield station. Can you help?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Can I send you my snagging list?
Yes. Snagging lists are a common starting point for us. We agree the sealant items with you before any work starts.
Do you guarantee your work?
Yes. All our work carries a one-year guarantee.
Are you an approved applicator?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
Should I go to my builder first?
Start with the builder if you are in the snagging or warranty period. If it isn’t resolved, we will cut it out and reseal it.
How long will you be here?
It depends on the size of the job, but as a guide it takes a few hours in a single home. We’ll give you a better idea when we quote.
Do you work for hotels and businesses?
Yes. Larger jobs can be planned room by room or area by area to suit the site.
What we’re called out for in Green Street Green
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes do not always leave time for joints to dry first.
The most common problems we see are:
- Untidy sealant flagged on a snagging list
- Frame joints opening as the plaster dries
- Worktop and upstand sealant coming away
- Skirting joints opening in the first winter
For new homes near Chelsfield station, it’s worth checking the sealant early, while snags are still fresh.
What to look for in a quote
- Is the old sealant removed completely?
- Is VAT in the price?
- How the joint is cleaned and prepared
- What guarantee comes with the work
When something else is needed
We’ll always be straight with you, so here’s what sealant cannot fix:
- Deciding who is responsible under a builder’s warranty
- Cracking that points to a structural problem
- Movement caused by a poorly fitted tray or bath
If in doubt, phone 0345 464 0079 or send us an email and we’ll say what we think before you book.
Surfaces we seal
- Windows & doors
- Skirting & floors
- Kitchens
- Bathrooms & en suites
- Show homes
- Plot handovers
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.