West Sussex · England
New-build mastic & snagging in Hassocks, West Sussex
We cover Hassocks for plot mastic for developers and snagging failed sealant in new homes. Old material cut out, joints cleaned and sealed neatly and every job guaranteed for a year.
- Worktop and upstand sealant coming away
- Joints pulling apart as timber shrinks
- Cracked sealant around new window and door frames
New build mastic for homes and businesses in Hassocks
Failed shower seals, gaps along the skirting and messy beads are common items on a new-home snagging list. If you are still within the builder’s snagging or warranty period, tell them first. Common call-outs are for kitchen sealant that has pulled off the wall and smeared, uneven beads picked up at snagging, across windows & doors, plot handovers and kitchens.
If you’ve bought a new home in or near Hassocks, the first year or two is a good time to check the sealant. Gaps at skirtings, shower seals pulling away and missing mastic around frames are common snags.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Location
- Hassocks (BN6)
- Region
- West Sussex
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about new build mastic in Hassocks
Do you cover Hassocks for new build mastic?
Yes, Hassocks is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or send us an email and let us know what needs doing.
Will you come out to Hassocks?
Yes, Hassocks is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do plot mastic on a new development?
Yes. Plot mastic and second-fix sealing for developers is part of our work. Send us the plot schedule and we will quote.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Hassocks, along with the rest of our area.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. Then call 0345 464 0079 or drop us an email.
Who should fix failed sealant in a new build?
Start with your builder while their snagging or warranty period runs. After that, or if their repair keeps failing, we can do it with our one-year guarantee.
Can you do several jobs on one visit?
Yes. More than one area can go on one quote.
When is the best time to reseal in a new build?
It depends on whether water is getting through. A leaking shower or bath seal should be redone straight away, while small cosmetic gaps can wait a while.
What we are called out for in Hassocks
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.
The most common problems we see are:
- Smeared, uneven beads picked up at snagging
- Beads laid onto grit and dust from the build
- Cracks appearing as a new home settles
- Plot mastic for developers ahead of handover
If you’ve bought a new home near Hassocks station, the sealant around baths, showers and frames is worth checking in the first year or two.
Comparing quotes
- How the colour is chosen
- What guarantee comes with the work
- What preparation is included
- Whether they seal over old material or remove it
What we cannot put right
Before booking, it’s worth knowing the limits:
- A tray or bath that is not properly supported, until it’s fixed
- Your warranty claim itself, which is between you and the builder
- Damaged fittings that need replacing
If in doubt, phone 0345 464 0079 or drop us an email and we’ll say what we think.
Joints and surfaces we work on
- Skirting & floors
- Windows & doors
- Kitchens
- Plot handovers
- Show homes
- Bathrooms & en suites
New build mastic around Hassocks
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.
In and around Hassocks, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Hassocks is about 2 miles south of Burgess Hill, in West Sussex. From the centre of Hassocks to the outskirts, we cover new build mastic for every kind of property. Our West Sussex coverage runs to 371 places, and Hassocks is one of them. For nearby work, see our Brighton page (7 miles or so).
Work in BN6 is quoted and booked the same way as anywhere else. Streets in the area include London Road, Semley Road and Farm Close, all of which we cover. Close by, we work in Keymer (1 mile east), Hurst Wickham (1 mile north-west), Clayton (1 mile south), Hurstpierpoint (1 mile north-west) and Ditchling (1 mile east). We also work in nearby towns such as Crawley (13 miles north), Horsham (12 miles north-west), Worthing (13 miles south-west), Haywards Heath (5 miles north-east), East Grinstead (15 miles north-east) and Shoreham-by-Sea (8 miles south-west).
Around Hassocks
Locally, jobs take us to homes and businesses close to Downlands Community School and The Hassocks pub, among other places. There’s a railway station in Hassocks itself: Hassocks station. Nearby you will also find The Budding Foundation Museum of Gardening (under half a mile south-west) and Clayton Castle (1.2 miles south). Open spaces near Hassocks include Bedelands Farm Nature Reserve and Wolstonbury Hill.
Nearby places to Hassocks
Other services in Hassocks
What affects the cost of new build mastic
Jobs vary more than people expect. What affects the quote:
- Whether the work is at height
- The product the joint needs
- Working hours on commercial sites
- The number of rooms or windows
What it costs depends on the amount of work, how much old material has to come out and access to the work. We give a clear quote before any work starts.
Helping us quote
Photos help, but a description is a good start. Try to tell us:
- Whether it’s a home or a business
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- The address or postcode of the job
Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. We will explain what we’d do and give you a clear quote before we start.
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements.
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Keep photos and emails about snagging items
- Check bath and shower seals every few months as the house settles
- Report sealant problems to your builder during the snagging period
- Resist patching a failed seal with a tube from the DIY shop
Keep pictures of the joints and any snagging correspondence with your builder. It’s useful if you need to raise other issues later.
The sooner you deal with untidy or cracking sealant, the less there is to put right. Small faults turn into leaks if left.
Leave it or put it right?
Water getting past a failed seal in a new build reaches walls and floors that are still settling. Resealing promptly protects the new finishes around it. Around Hassocks, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re unsure, ring 0345 464 0079 or send us an email for an honest opinion and a quote.
Why us?
- Colour agreed with you before work begins
- Approved under the ARBOMaster scheme
- Arbo and Everbuild products
- White, clear, grey or another colour, product permitting
What happens on the day
Good joint work is mostly preparation, and we don’t rush it. Joints are cleaned back and dried before anything new goes in. In total, it normally takes a few hours in a single home. For a job in Hassocks, we agree the time, the access and parking before the day. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- 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.
- We prime where needed and apply a sealant suited to each joint.
- Each bead is tooled and the cure times explained.
Getting ready for the visit
- Clear the area around the work
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
Ask for a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work before giving you a price.