Essex · England
High Ongar New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for homeowners, landlords and businesses in High Ongar. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Shower seals failing in the first year or two
- Worktop and upstand sealant coming away
- Smeared, uneven beads picked up at snagging
What the job involves on each surface
Bathrooms and en suites
Trays and baths in new builds settle as they’re used. The joint is stripped back before the new bead goes in.
Plot handovers
Send us the schedule and any sealant specification and we’ll quote. We seal bathrooms, kitchens, frames and floors to the agreed spec.
New build mastic in High Ongar, done properly
If your new home has a leaking shower seal, open skirting joints or untidy sealant, we can help. While the builder’s snagging or warranty period runs, report it to them first and if that stalls, we can do it. We are often asked to deal with gaps behind new kitchen upstands and shower seals failing in the first year or two, on show homes, bathrooms & en suites and plot handovers.
In a village or hamlet like High Ongar, new homes are more likely to be a barn conversion or a handful of houses than a big estate. Each still needs its sealant and floor joints finished properly.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- High Ongar (CM5)
- Wider area
- Essex
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
New build mastic in High Ongar: local notes
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 High Ongar, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
High Ongar is about 6 miles north of Brentwood, in Essex. Homes, rented property, offices and hotels in High Ongar can book us for new build mastic, old or new, large or small. The work is guaranteed for a year. High Ongar is one of 644 towns and villages in Essex we cover. You can also see our page for Chelmsford, roughly 10 miles from High Ongar.
Postcode districts we cover here for new build mastic: CM5. Whether your property is on The Street, Mill Lane and Millfield or anywhere close by, we can help. Other places close to High Ongar include Chipping Ongar (1 mile west), Shelley (1 mile north-west), Norton Mandeville (1 mile north-east), King Street (1 mile east) and Greensted (2 miles west). Further out, we also cover Chelmsford (10 miles east), Basildon (12 miles south-east), Harlow (8 miles north-west), Brentwood (6 miles south), Billericay (9 miles south-east) and Loughton (9 miles south-west).
Near you in High Ongar
We work in homes and buildings around Red Lion Public House and The Ongar Academy. A little further out are Willingale Doe (3.7 miles north-east).
FAQs for High Ongar
Is High Ongar within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Is there a guarantee on new build mastic in High Ongar?
All our work, in High Ongar and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Can you do plot mastic on a new development?
Yes. We take on second-fix sealant work across new plots. We clean and prime joints properly to keep callbacks down.
Will the old sealant be removed?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Can I send you my snagging list?
Yes. Send the list and a few photos of the sealant items, and we will quote. We’ll flag anything that needs another trade.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. Indoors, that normally means someone at home.
Is it messy?
No. The area is protected while we work and cleaned up afterwards.
Common problems we fix in High Ongar
If plaster or screed was still damp when it was sealed, the bond suffers. On a busy site, joints aren’t always given time to dry before the sealant goes on.
Any of these means the joints need attention:
- Gaps opening as the house dries out and settles
- Leaking shower tray seals in a new home
- Internal frame sealant that has split
- Untidy sealant flagged on a snagging list
For jobs in and around High Ongar, choosing the right material for each joint is as important as a tidy finish.
Comparing quotes
- How hidden problems are handled
- How much experience the applicator has
- Whether VAT is included
- What the cure time is
Why act early in High Ongar
Small cosmetic gaps can wait for the house to settle, 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’ll tell you. In a small place like High Ongar, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why High Ongar clients choose us
- Approved under the ARBOMaster scheme
- We agree the colour with you first
- Fully insured
- Any old sealant cut out fully, not covered over
How we quote for new build mastic
The price is agreed before any work begins. It takes into account:
- Which sealant suits the joint
- Working hours on commercial sites
- The size of the job
- How many rooms, windows or areas are involved
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Call for a quick quote and we will explain what it covers.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- How we’d reach the joints
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that’s easy
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work.
When something else is needed
We’d rather tell you now than do work that will not last, so these are the limits:
- Cracking that points to a structural problem
- Cracked trays, tiles or worktops
- Disputes or warranty claims with your builder
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we’ll tell you honestly.
Where we work in High Ongar
- Show homes
- Kitchens
- Bathrooms & en suites
- Windows & doors
- Plot handovers
- Skirting & floors
How it works
There’s no need to move everything out, just the space around the work. We protect the rest, and the work takes a few hours for most snagging lists, longer for a run of plots for a typical job. Somewhere as small as High Ongar, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we work through your snagging list or plot schedule with you.
- The old bead comes out in full, with no layer left behind.
- Each joint is cleaned of dust and grit, then primed if required.
- New sealant suited to each joint is applied and tooled neatly.
- We check every joint and tell you how long each needs to cure.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Mention any sign-in or site rules at work premises
- For indoor joints, keep the area dry beforehand if you can
How to get a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Advice
Towns and villages near High Ongar
What else we do in High Ongar
DIY versus a professional finish
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.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.