Essex · England
Mountnessing New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for householders, landlords and businesses in Mountnessing. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps behind new kitchen upstands
- Sealant work across a run of new homes
- Sealant that never bonded to the surface
New build mastic in Mountnessing
A new house keeps drying out and settling for its first couple of years. Timber shrinks, plaster dries and baths and trays bed down, so sealant that was laid quickly before handover often cracks. If you have gaps between new skirting and floors and cracked sealant around new window and door frames, we can put it right.
Somewhere as small as Mountnessing, new homes tend to be conversions, self-builds or a few houses rather than an estate. Each still needs its sealant and floor joints finished properly.
All our work comes with a 12-month guarantee, wherever you are in Essex.
- Location
- Mountnessing (CM15)
- Region
- Essex
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Common problems we fix in Mountnessing
The first winter with the heating on dries a new home quickly. Skirting, frames and worktops pull away slightly and cracked sealant shows up.
The most common problems we see are:
- Shower seals failing in the first year or two
- Cracked caulk along new skirting
- Second-fix sealing on new plots
- Joints pulling apart as timber shrinks
In and around Mountnessing, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- Are they insured?
- How long the guarantee is
- How long to leave it before use
- Which sealant they’ll use, and why
How to look after the new joints
After the cure time, these simple habits help:
- Get a leaking seal dealt with straight away
- Open a window or run the fan after bathing
- Check bath and shower seals every few months as the house settles
- Wipe joints with warm soapy water
Follow the cure time we give you before the area gets wet. Silicone is usually left for about a day.
If a shower tray or bath seal splits in the first year, look for movement. Getting it resealed properly, and any movement checked, stops it recurring.
How the visit works
When we arrive, we look over the joints with you first. We protect the surfaces around the joints before we start. Most jobs take anything from a few hours to several days, depending on the number of plots. For a village or hamlet like Mountnessing, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- We look at why each joint failed, including any movement.
- Old sealant is cut out and the joints cleaned.
- Joints are dried and primed where the product calls for it.
- Baths are filled with water, then the new sealant is applied.
- The finished joints are checked and the cure times given.
Getting ready for the visit
- Mention any tricky access
- Let us know about earlier repairs to the joints
- Let us know if you’ve seen damp or leaks
How to get a quote
For new build mastic in Mountnessing, ring 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
Advice
Your questions about new build mastic in Mountnessing
Will you come out to Mountnessing?
Yes. Mountnessing is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
I let a flat near Ingatestone station. Can you help?
Yes. We work for landlords and letting agents as well as householders, and several properties can go on one quote. Just ring 0345 464 0079 or send us an email with the address and what needs doing, and we will give you a clear quote.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Where are you based?
We are based in Crawley, and we cover South East England, London and all of Scotland.
Do you work through snagging lists?
Yes. Send it with pictures and we will quote for the sealant items. Items that need a plumber, tiler or the builder are flagged.
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 before the joint can be used?
Cure times vary by product. We tell you how long to leave it before we go.
Quotes for new build mastic in Mountnessing
The quote reflects the job in front of us. We look at:
- The product the joint needs
- Working hours on commercial sites
- Any mould that needs treating
- The number and length of the joints
What it costs depends on the amount of work, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts.
What to tell us for a quote
Before you ask for a quote, have a think about:
- Whether it’s a home or a business
- The address or postcode of the job
- What the problem is, such as mould, gaps, leaks or cracking
- How we’d reach the joints
Want a quote for new build mastic? Please ring 0345 464 0079 or send us an email and tell us about the job. We’ll explain what we’d do and give you a clear quote before work begins.
Landlords, agents and businesses in Mountnessing
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. Several properties can be quoted together.
Should I try it myself first?
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.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
When it isn’t the sealant
It helps to know what we cannot do too:
- Baths and trays that move too much for sealant to cope with
- Plumbing faults behind the sealant
- Cracked trays, tiles or worktops
If in doubt, ring 0345 464 0079 or email us and we’ll say what we think.
Joints and surfaces we work on
- Kitchens
- Bathrooms & en suites
- Skirting & floors
- Windows & doors
- Show homes
- Plot handovers
New build mastic around Mountnessing
Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
If you’ve bought a new home near Ingatestone station, the sealant around baths, showers and frames is worth checking in the first year or two.
Mountnessing is about 3 miles north-east of Brentwood, in Essex. Wherever you are in the CM15 postcode area, we cover new build mastic for homes and businesses. Our Essex coverage runs to 644 places, Mountnessing among them. We also work in Chelmsford, about 8 miles from Mountnessing.
We cover every part of CM15 for new build mastic. We cover properties on Church Road, Roman Close and Roman Road. Nearby, we also carry out new build mastic in Swallows Cross (1 mile north-west), Green Street (1 mile north), Ingatestone (1 mile north-east), Buttsbury (2 miles east) and Hutton (2 miles south). Further out, we also cover Chelmsford (8 miles north-east), Basildon (7 miles south-east), Harlow (13 miles north-west), Brentwood (3 miles south-west), Maldon (15 miles east) and Canvey Island (13 miles south-east).
Near you in Mountnessing
Typical jobs here are in homes near Shenfield High School, Hutton Country Park and George and Dragon pub and the streets around them. The nearest railway station is Ingatestone station, about 1.6 miles north-east. Other landmarks nearby include Brentwood Community Hospital (2.7 miles south-west). The countryside around Mountnessing includes Norsey Wood.