West Sussex · England
Shermanbury New Build Mastic
New build mastic in Shermanbury from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Cracked sealant around new window and door frames
- New-build shower sealant that has already split
- Sealant that never bonded to the surface
Questions from Shermanbury
Is there a guarantee on new build mastic in Shermanbury?
All our work, in Shermanbury and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is Shermanbury in your area for new build mastic?
Yes. We work across London and the South East, and Shermanbury is part of that. Just phone 0345 464 0079 or email us with a few details of the job.
What should I tell you?
The location, the problem and the rough size of the job. If you can, email a few photos.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you remove the old sealant?
Yes, always, and completely. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
How long will you be here?
It depends on the size of the job, but as a guide it takes anything from a few hours to several days, depending on the number of plots. We will give you a better idea when we quote.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
What colour sealant will you use?
It depends on the joint: white or clear in most bathrooms, and a colour to suit worktops, frames and floors elsewhere. We’ll agree it with you first.
About our new build mastic in Shermanbury
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 are dealing with messy sealant that spoils new finishes and worktop and upstand sealant coming away, we can put it right, on plot handovers, windows & doors and show homes alike.
For a small place like Shermanbury, the journey and access are planned in advance, and the work itself is the same as on any site.
Every job is covered by our 12-month guarantee.
- Where
- Shermanbury (RH13)
- Wider area
- West Sussex
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What happens if it’s left?
A hairline gap at a skirting can wait, but a leaking seal can’t. Not sure whether yours can wait? You can phone 0345 464 0079 or drop us an email with a few pictures and we will give you a straight answer. In a small place like Shermanbury, homes can be exposed to wind and rain, which finds any gap, and older walls, once damp, take a long time to dry.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we’ll explain the quote if you ask.
What you get with us
- We are fully insured
- Approved under the ARBOMaster scheme
- More than 20 years in sealant work
- You choose the colour before work begins
Take a look at what affects the cost and our reviews.
DIY versus a professional finish
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
What happens on the day
Good joint work is mostly preparation, and we do not rush it. Joints are cleaned back and dried before anything new goes in. All told, the work takes a few hours for most snagging lists, longer for a run of plots. In a small place like Shermanbury, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- The failed sealant is removed completely, with no layer left behind.
- 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.
How to prepare
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any leaks or damp you’ve noticed
Ask for a quote
Call for a quick quote, or send an email if you’d rather. Describe what needs sealing and we will talk you through the work before giving you a price.
Advice
Towns and villages near Shermanbury
What else we do in Shermanbury
New build mastic around Shermanbury
Rainfall in the South East is lower than in much of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
For jobs in and around Shermanbury, choosing the right material for each joint is as important as a tidy finish. In and around Shermanbury, as anywhere, good new build mastic starts with a clean, dry, properly prepared joint.
Shermanbury is about 7 miles west of Burgess Hill, in West Sussex. Whether you are in the middle of Shermanbury or further out, new build mastic is available for homes and businesses alike. Our West Sussex coverage runs to 371 places, and Shermanbury is one of them. Our Crawley page covers work nearby, about 11 miles away.
All of RH13 is within our area for new build mastic. That includes homes and businesses on Knapp Drive, Brighton Road and Partridge Green Road. We also cover Kent Street (2 miles north-east), Cowfold (2 miles north), Wineham (2 miles east), Henfield (2 miles south) and Blackstone (3 miles south-east). We also work in nearby towns such as Crawley (11 miles north), Horsham (7 miles north), Worthing (11 miles south-west), Haywards Heath (9 miles east), Burgess Hill (7 miles east) and Littlehampton (15 miles south-west).
Around Shermanbury
In Shermanbury, that means homes and buildings near The Bull Inn, among other places. Nearby you’ll also find The Dene Hospital (5.2 miles east). Green spaces nearby include Knepp Wildland.
Aftercare tips
Looking after new joints is easy:
- Watch for new gaps as the house dries out
- Open a window or run the fan after bathing
- Wait for the cure time before using a resealed shower
- Photograph failed sealant before it’s redone
Follow the cure time we give you before the area gets wet. Most silicones need around a day to cure enough for use.
A failed seal in a new home lets water into joists, plasterboard and ceilings. Catching it early keeps the fix to the sealant and protects the rest of the house.
When it isn’t the sealant
In fairness, there are a few things sealant won’t fix:
- Your warranty claim itself, which is between you and the builder
- Settlement cracks that need a surveyor
- Baths and trays that move too much for sealant to cope with
If in doubt, ring 0345 464 0079 or send us an email and we will say what we think before booking.
What we seal
- Kitchens
- Windows & doors
- Skirting & floors
- Show homes
- Plot handovers
- Bathrooms & en suites
Landlord and commercial work in Shermanbury
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
How we quote for new build mastic
You will get a clear quote before any work starts. It takes into account:
- Working hours on commercial sites
- How many rooms, windows or areas are involved
- How much there is to do
- The product the joint needs
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Helping us quote
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- If someone has resealed it before
- How many joints, rooms or windows are involved
- The address or postcode of the job
For new build mastic in Shermanbury, call 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before work begins.