Greater London · England
New-build mastic & snagging in Bromley Common, Greater London
We cover Bromley Common for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly.
- Messy sealant that spoils new finishes
- Joints pulling apart as timber shrinks
- Frame joints opening as the plaster dries
What sealant work can’t fix
We won’t take on work that will not last, so here’s what sealant can’t put right:
- Leaking fittings rather than failed sealant
- Baths and trays that move too much for sealant to cope with
- Your warranty claim itself, which is between you and the builder
Not sure which it is? You can call 0345 464 0079 or send us an email and we will tell you honestly before you book.
Where we work in Bromley Common
- Plot handovers
- Skirting & floors
- Show homes
- Bathrooms & en suites
- Kitchens
- Windows & doors
New build mastic in Bromley Common, done properly
Some owners wait for the first year’s movement before having joints redone. That makes sense for small gaps that are just cosmetic, but a seal that’s letting water through needs doing now. If you’re dealing with messy sealant that spoils new finishes and plot mastic for developers ahead of handover, we can help.
From brand-new flats to converted terraces with new flooring, London has every kind of floor. Every joint between floor, skirting and threshold has to cope with some movement.
Big or small, it’s backed by our 12-month guarantee.
- Place
- Bromley Common (BR2, BR1)
- Region
- Greater London
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
A hairline gap at a skirting can wait, but water getting through can’t. Not sure whether yours can wait? You can ring 0345 464 0079 or drop us an email with a few pictures and we will give you a straight answer. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble for homes in Bromley Common.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we will explain what it covers.
Why book with us
- 180+ five-star Google reviews
- Quality sealants from Arbo and Everbuild
- White, clear, grey or coloured to suit, where the product allows
- A 12-month guarantee on all work
New homes and floors in Bromley Common
Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent. Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you’ve bought a new home near Bickley station, the sealant around baths, showers and frames is worth checking in the first year or two.
Bromley Common is about 2 miles south-east of Bromley, in Greater London. Jobs in Bromley Common get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Bromley Common is one of 764 places in Greater London we cover for new build mastic. Our London page covers work nearby, about 10 miles away.
Our applicators cover all of BR2 and BR1 for new build mastic. New build mastic is available to properties on Pope Road, Crown Lane and Church Lane. Close by, we work in Southborough (1 mile north-east), Hayes (1 mile south-west), Locksbottom (1 mile south-east), Shortlands (2 miles north-west) and Keston (2 miles south). Within a short drive, we also cover London (10 miles north-west), City of Westminster (12 miles north-west), Marylebone (12 miles north-west), Kensington (13 miles north-west), St Pancras (12 miles north-west) and Shoreditch (11 miles north-west).
Near you in Bromley Common
We work in homes and buildings around Norman Park, The Chequers Public House and Bishop Justus CofE School. For rail, the closest station is Bickley station, roughly 1.2 miles north of the centre. Other landmarks nearby include Bridgeways Day Hospital (within half a mile east) and Bethlem Museum of the Mind (less than half a mile south-west). Green spaces nearby include Summer Hill and Downham Woodland Walk.
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so tell us about it when you ask for a quote.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Common problems we fix in Bromley Common
Sealant applied onto damp surfaces doesn’t bond well. On a busy site, joints aren’t always given time to dry before the sealant goes on.
Most people get in touch when they notice one of these:
- Sealant work across a run of new homes
- Frame joints opening as the plaster dries
- Cracked caulk along new skirting
- Sealant that never bonded to the surface
As a London address, Bromley Common can be tricky for parking: let us know about parking bays, permits or a driveway.
Questions to ask before booking
- How the joint is cleaned and prepared
- Whether the sealant suits the joint
- What the quote includes, VAT included or not
- Whether you can choose the colour
Landlord and commercial work in Bromley Common
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
We also work for property managers and facilities teams. We can quote a run of properties together, and we are fully insured.
FAQs for Bromley Common
Do you cover Bromley Common for new build mastic?
Yes, Bromley Common is within the area we cover. We work across London and the South East. You can phone 0345 464 0079 or email us and tell us what needs doing.
Can parking be tricky for a visit in Bromley Common?
It can be, so it helps to tell us about permits, visitor bays or off-street space when you book. The visit is then planned around what’s available.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Do you work for letting agents?
Yes, we do. We work in homes, commercial premises and hotels.
Are you insured?
Yes. We are fully insured for domestic and commercial work.
How much does new build mastic cost in Bromley Common?
Every job is different, so each one gets its own quote. To get one, call 0345 464 0079 or drop us an email and tell us what needs doing and where.
Where is Mr Mastic based?
We are a Crawley-based firm. Our area covers South East England, London and Scotland.
Can you work from my snagging list?
Yes. Send the list and a few pictures of the sealant items, and we’ll quote. We’ll tell you if anything on it isn’t a sealant job.
Looking after it afterwards
To keep the joints looking good and working properly:
- Watch for new gaps as the house dries out
- Follow the cure time we give you
- Open a window or run the fan after bathing
- Act quickly if a seal starts to leak
Watch the joints as the house settles. Small gaps can appear as the house dries.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Early resealing keeps the job small.
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How the visit works
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to several days, depending on the number of plots, and the area is left clean. In a London area like Bromley Common, the main things to plan are parking and access: tell us about permits, visitor bays or off-street space, which floor we’re working on and whether there’s a lift.
- We start by agreeing which joints are on the list, from the snagging sheet or plot schedule.
- The old bead comes out in full, with no layer left behind.
- Each joint is cleaned of dust and grit, then primed if required.
- A sealant chosen for each area goes in and is tooled smooth.
- Finally, each room is checked and you’re given the cure time.
Getting ready for the visit
- Let us know about earlier repairs to the joints
- Let us know about parking restrictions
- Let us know if you’ve seen damp or leaks
Get a quote
Want a quote for new build mastic? Please call 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.