Kent · England
New Build Mastic in Crockenhill
Our applicators work in Crockenhill on plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly.
- Smeared, uneven beads picked up at snagging
- Joints pulling apart as timber shrinks
- Sealant work across a run of new homes
New build mastic in Crockenhill
In a new home, every joint should have a clean, even bead. Smeared, patchy or cracked sealant is worth sorting early, before water gets into the floor or walls. We work on windows & doors, plot handovers and show homes, and the jobs we see most are joints pulling apart as timber shrinks and gaps behind new kitchen upstands.
For a small place like Crockenhill, the journey and access are planned in advance, and the work itself is the same as on any site.
There’s a 12-month guarantee on every job.
- Where
- Crockenhill (BR8)
- Region
- Kent
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
So the new joints stay in good condition:
- Watch for new gaps as the house dries out
- Report sealant problems to your builder during the snagging period
- Don’t wait for the house to settle if water is getting through
- Keep water off fresh sealant until it has cured
Photograph failed sealant before it’s redone and keep the builder’s replies. It helps if anything else comes up during the warranty period.
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.
For landlords and businesses
Landlords and letting agents in Crockenhill can book us as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
What we can’t put right
Before booking, it’s worth knowing the limits too:
- Leaks from pipes, valves or wastes, which need a plumber
- Cracked trays, tiles or worktops
- A tray or bath that isn’t properly supported, until it’s fixed
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
Joints and surfaces we work on
- Show homes
- Skirting & floors
- Windows & doors
- Kitchens
- Plot handovers
- Bathrooms & en suites
DIY sealant or a professional job?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Also near Crockenhill
What else we do in Crockenhill
Surface by surface
Plot handovers
Send us the schedule and any sealant specification. We seal bathrooms, kitchens, frames and floors.
Bathrooms and en suites
En suite seals are easy to miss on a snagging list until they leak. Resealing properly keeps water where it belongs.
New homes and floors in Crockenhill
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
In and around Crockenhill, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Crockenhill is about 2 miles east of Orpington, in Kent. Jobs in Crockenhill get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Crockenhill is one of 922 places in Kent we cover. Our London page covers work nearby (14 miles or so).
Work in BR8 is quoted and booked the same way as anywhere else. Local streets include Church Road, Old Chapel Road and Sounds Lodge. If you’re just outside Crockenhill, we cover Kevington (1 mile west), Swanley (1 mile north-east), Well Hill (2 miles south), Derry Downs (2 miles west) and Maypole (2 miles south-west). We also work in nearby towns such as Dartford (5 miles north-east), Sevenoaks (7 miles south), Gravesend (10 miles east), Tonbridge (14 miles south), Northfleet (9 miles north-east) and Kings Hill (13 miles south-east).
Around Crockenhill
In Crockenhill, that means homes and buildings near Orchards Academy, among other places. For rail, the closest station is Swanley station, roughly 0.8 miles north. Other landmarks nearby include London Borough of Bromley Museum (2.5 miles west) and Orpington Hospital (3.2 miles south-west). For a walk, there’s The Warren and Summer Hill.
How the visit works
You don’t need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the job takes anything from a few hours to several days, depending on the number of plots in most cases. In a small place like Crockenhill, access is usually the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- We look at why each joint failed, including any movement.
- We remove the failed sealant and clean the joints.
- We make sure the joints are dry and prime them if needed.
- New sealant goes in, with baths filled first so they’re at their heaviest.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Mention if the joints have been sealed before
- Mention any tricky access
- Try not to wet indoor joints just before the visit
Getting a quote
For a quote, call 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
Advice
Questions from Crockenhill
I let a flat near Swanley station. Can you help?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or email us and tell us about the property, and we’ll give you a clear price.
Is Crockenhill in your area for new build mastic?
Yes. Our work covers London and the South East, and Crockenhill is part of that. You can ring 0345 464 0079 or drop us an email and tell us what needs doing, and we’ll send you a clear quote.
Why does sealant fail so quickly in new builds?
Cracking in the first couple of years is common, because the house is drying and settling. Poor preparation at handover adds to it.
Can I do it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.
Where do you work from?
We work from Crawley. We cover Crockenhill and the rest of Kent.
What colour sealant will you use?
We use white, clear or a colour to suit the finishes. Tell us what you’d like when you get a quote.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
Do you need new build mastic in Crockenhill?
Sealant applied onto damp surfaces doesn’t bond well. Site programmes don’t always leave time for joints to dry first.
The problems people usually mention when they call include:
- Cracks appearing as a new home settles
- Plot mastic for developers ahead of handover
- Leaking shower tray seals in a new home
- Beads laid onto grit and dust from the build
For new homes near Swanley station, it’s worth checking the sealant early, while snags are still fresh.
What to look for in a quote
- Are they insured?
- Is the old sealant removed completely?
- What happens if the job turns out different
- Which sealant they’ll use, and why