West Sussex · England
New Build Mastic in Hammerwood
Our applicators work in Hammerwood on plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Shower seals failing in the first year or two
- Kitchen sealant that has pulled off the wall
- Cracked sealant around new window and door frames
About our new build mastic in Hammerwood
We work in new homes and on new-build sites across Hammerwood. One shower or a whole phase of plots, the method doesn’t change: cut out, clean, prime where needed and reseal neatly. We work on plot handovers, windows & doors and skirting & floors, and the jobs we see most are internal frame sealant that has split and new-build shower sealant that has already split.
For a small place like Hammerwood, the journey and access are planned in advance, and the work itself is the same as on any site.
The work is covered for a year after we finish. If anything is not right with it, call 0345 464 0079 or drop us an email.
- Location
- Hammerwood (RH19)
- Wider area
- West Sussex
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
How the job changes by surface
Windows and doors
The gap between a new frame and its plaster reveal often opens up. We remove cracked sealant and apply a flexible one in a matching colour.
Skirting and floors
Floors and skirting move as the house dries and the heating runs. Caulk cracks; a flexible sealant moves with it in a colour to suit.
Towns and villages near Hammerwood
Other services in Hammerwood
What we cannot put right
To be straight with you, there are a few things sealant won’t fix:
- Broken tiles or a split tray
- Disputes or warranty claims with your builder
- A tray or bath that isn’t properly supported, until it’s fixed
Not sure which it is? You can ring 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Hammerwood
- Kitchens
- Bathrooms & en suites
- Windows & doors
- Show homes
- Plot handovers
- Skirting & floors
Looking after it afterwards
To keep the joints looking good and working properly:
- Watch for new gaps as the house dries out
- Ventilate bathrooms well, especially in the first year
- Wait for the cure time before using a resealed shower
- Clean sealant with mild detergent, not abrasives
Do not stand on the bath edge or the lip of the tray while the sealant cures. Report any movement in a bath or tray.
Lifting sealant traps moisture and mould behind it. Dealing with it before it goes black saves a harder job later.
The process
At the end, we look at the finished work together and tell you how long to leave it. The visit itself generally takes a few hours in a single home, depending on how much there is to do. Somewhere as small as Hammerwood, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- Each joint is checked for movement before any work starts.
- Old sealant is cut out and the joints cleaned.
- We make sure the joints are dry and prime them if needed.
- 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 if the joints have been sealed before
- Where the joints are inside, avoid wetting them before we arrive
- Mention any tricky access
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Related advice
Hammerwood: your questions answered
Will you come out to Hammerwood?
Yes. Hammerwood 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 Dormans station. Can you help?
Yes, we work for landlords and letting agents. You can call 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before any work starts.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
Do you guarantee your work?
Yes, for a year. If there’s a problem with our work in that time, tell us and we’ll put it right.
Do you work through snagging lists?
Yes. Snagging lists are a common starting point for us. We agree the sealant items with you before work begins.
Where are you based?
We work from Crawley. We cover Hammerwood and the rest of West Sussex.
Should I go to my builder first?
Your builder, if you are still in their snagging or warranty period. If that does not work out, we are happy to quote and our work is guaranteed for a year.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Landlords, agents and businesses in Hammerwood
Landlords and agents in Hammerwood can book us as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
We regularly work with letting and managing agents. Tell us the address, the job and how access works.
New build mastic in Hammerwood: local notes
Compared with the north and west, the South East gets less rain, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you’ve bought a new home near Dormans station, the sealant around baths, showers and frames is worth checking in the first year or two.
Hammerwood is about 3 miles east of East Grinstead, in West Sussex. Anywhere in RH19, we can carry out new build mastic at your property. Across West Sussex, we cover 371 places, Hammerwood among them. You can also see our page for Crawley, about 10 miles away.
All of RH19 is within our area for new build mastic, from the main roads to the quietest streets. Other places close to Hammerwood include Ashurst Wood (2 miles south-west), Cowden (2 miles east), Dormansland (2 miles north-west), Dormans Park (2 miles west) and East Grinstead (3 miles west). Larger places within reach include Crawley (10 miles west), Haywards Heath (11 miles south-west), Burgess Hill (15 miles south-west), Broadfield (11 miles west), Bewbush (12 miles west) and Southgate (10 miles west).
Local landmarks in Hammerwood
For rail, the closest station is Dormans station, roughly 2.4 miles north-west. Well-known places in the area include Bolebroke Castle (2.9 miles south-east) and East Grinstead Museum (2.4 miles south-west). The countryside around Hammerwood includes Hedgecourt Lake.
Do you need new build mastic in Hammerwood?
Sealant applied onto damp surfaces doesn’t bond well. On a busy site, joints aren’t always given time to dry.
Common reasons people contact us include:
- Gaps opening as the house dries out and settles
- Smeared, uneven beads picked up at snagging
- Second-fix sealing on new plots
- Frame joints opening as the plaster dries
Around Hammerwood, as everywhere, new build mastic is only as good as the preparation behind it.
What to look for in a quote
- Which sealant they’ll use, and why
- Who turns up on the day
- Whether you can choose the colour
- How the joint is cleaned and prepared
Should I try it myself first?
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.