Greater London · England
North Cray New Build Mastic
Professional new build mastic in and around North Cray, with every bit of old sealant taken out first.
- Gaps between new skirting and floors
- Beads laid onto grit and dust from the build
- Smeared, uneven beads picked up at snagging
Common questions in North Cray
Is parking an issue for new build mastic in North Cray?
Parking in North Cray, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot.
Can you do new build mastic in North Cray?
Yes. Our work covers London and the South East, and North Cray is part of that. You can phone 0345 464 0079 or send us an email and tell us what needs doing, and we’ll give you a clear price.
How long does new build mastic take?
A typical job takes a few hours in a single home. We’ll confirm how long when we quote.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
How do I get a quote for new build mastic in North Cray?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote.
Where are you based?
Mr Mastic is based in Crawley. We cover North Cray and the rest of Greater London, along with the rest of our area.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do. Working times can be discussed when we quote.
Do you work through snagging lists?
Yes. Snagging lists are a common starting point for us. We’ll go through the sealant items and agree what we will do.
New build mastic for homes and businesses in North Cray
A new build should have a neat, sound bead at every joint. Smeared, patchy or cracked sealant is worth sorting early, before water gets into the floor or walls. Common call-outs are for smeared, uneven beads picked up at snagging and gaps between new skirting and floors, across windows & doors, show homes and skirting & floors.
Much of London’s new housing is flats in larger developments. Snagging there often goes through the developer or managing agent, and shower seals that fail early, skirting joints that open up and gaps at thresholds are all common snags.
All our work is covered by our 12-month guarantee, wherever you are in Greater London.
- Place
- North Cray (DA14)
- Wider area
- Greater London
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Quotes for new build mastic in North Cray
We do not publish a price list, because jobs vary so much. What we look at:
- Whether the work is at height
- The product the joint needs
- The number and length of the joints
- Working hours on commercial sites
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Helping us quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Roughly how big the job is
- Access, such as stairs, a lift or height
- The type of property
- What’s wrong with the joints now
Every job is quoted individually. Simply call 0345 464 0079 or email us and describe the job, and pictures are welcome.
Surface by surface
Kitchens
New-kitchen sealant is often applied in a rush. We take it out and reseal neatly, colour-matched where it shows.
Skirting and floors
As timber and screed dry, skirting and floors shift. Caulk cracks; a flexible sealant moves with it.
What happens if it’s left?
For developers, getting the sealant right first time saves return visits. Snagging visits for failed sealant cost time on every plot, and they’re avoidable with good preparation. In older London homes, water behind a failed joint soaks into brick and timber without much sign, and by the time it shows on a wall or ceiling in North Cray, the repair is bigger than the sealant job would have been.
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why us?
- White, clear, grey or another colour, product permitting
- We never seal over old sealant
- Tidy, careful work
- Homes, businesses and hotels
Take a look at how sealant jobs are priced or what customers say.
When to call us in North Cray
Sealant applied onto damp surfaces doesn’t bond well. Site programmes do not always leave time for joints to dry before the sealant goes on.
These are the problems we’re asked about most:
- Gaps behind new kitchen upstands
- Skirting joints opening in the first winter
- Sealant that never bonded to the surface
- Cracks appearing as a new home settles
For new homes near Albany Park station, it’s worth checking the sealant early, while snags are still fresh.
Comparing quotes
- What happens if they find a problem under the old sealant
- What guarantee comes with the work
- Whether they seal over old material or remove it
- Which sealant they’ll use, and why
Joints and finishes in North Cray homes
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, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
North Cray is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book.
North Cray is about 2 miles east of Sidcup, in Greater London. Jobs in North Cray get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 764 places in Greater London are on our list. There’s also a page for London, roughly 11 miles from North Cray.
Every address in DA14 is within our area for new build mastic, from the main roads to the quietest streets. Whether your property is on Water Lane, North Cray Road and Leafield Lane or a nearby road, our applicators can take on the job. We also cover the places around North Cray: Bexley (1 mile north), Coldblow (1 mile north-east), Ruxley (1 mile south), Blendon (1 mile north-west) and Joyden's Wood (1 mile east). We also work in nearby towns such as London (11 miles north-west), City of Westminster (14 miles north-west), Marylebone (14 miles north-west), Kensington (15 miles west), St Pancras (13 miles north-west) and Shoreditch (11 miles north-west).
What’s near North Cray
Locally, jobs take us to homes and businesses close to Foots Cray Meadows, Cleeve Park School and The White Cross pub. For rail, the closest station is Albany Park station, roughly 0.6 miles north-west of the centre. Well-known places in the area include Broadway Shopping Centre (1.7 miles north) and Bexley Hospital (1.8 miles north). Green spaces nearby include Wansunt Pit and Summer Hill.
How it works
Before we leave, we go over the finished joints with you. The work normally takes a few hours for most snagging lists, longer for a run of plots, depending on how much there is to do. In North Cray, flats, stairs and shared entrances are part of the routine. If the building has a concierge, managing agent or access rules, tell us when you book.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely.
- Joints are vacuumed and cleaned of building dust.
- Primer goes on where the surface and product need it, then the new sealant.
- We tool every joint neatly and tell you when each area can be used.
How to prepare
- Let us know about earlier repairs to the joints
- Clear items away from the joints we’re working on
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Advice
Honest limits
Sealant is not the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- A tray or bath that isn’t properly supported, until it’s fixed
- Deciding who is responsible under a builder’s warranty
- Leaking fittings rather than failed sealant
If in doubt, call 0345 464 0079 or send us an email and we will say what we think before booking.
What we seal
- Windows & doors
- Bathrooms & en suites
- Show homes
- Skirting & floors
- Plot handovers
- Kitchens
Towns and villages near North Cray
What else we do in North Cray
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.