Kent · England
New-build mastic & snagging in Westwell, Kent
We cover Westwell for plot mastic for developers and snagging failed sealant in new homes. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Kitchen sealant that has pulled off the wall
- Beads laid onto grit and dust from the build
- Internal frame sealant that has split
New build mastic in Westwell, done properly
Our new-build work comes in two parts: plot mastic for developers, and putting right failed sealant for people who’ve bought a new home. Both get the same care over preparation since hurried prep is behind a lot of new-build failures. We are often asked to deal with worktop and upstand sealant coming away and new-build shower sealant that has already split, on plot handovers, windows & doors and kitchens.
Work in a small place like Westwell just needs the journey and access planning, and the work itself is the same as on any site.
We stand behind the work with a 12-month guarantee.
- Where
- Westwell (TN25)
- Wider area
- Kent
- Guarantee
- A year, on every job
- Price
- A clear price before any work starts
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Signs you need new build mastic in Westwell
Sealant is often one of the last jobs before handover. Joints are not always cleaned of dust or primed, and the sealant sits on grit instead of the surface.
Keep an eye out for any of the following:
- Cracks appearing as a new home settles
- Beads laid onto grit and dust from the build
- New-build shower sealant that has already split
- Sealant work across a run of new homes
Around Westwell, as everywhere, new build mastic is only as good as the preparation behind it.
Comparing quotes
- Whether they seal over old material or remove it
- What the quote includes, VAT included or not
- What preparation is included
- Which colour the sealant will be
How we quote for new build mastic
Your quote is based on your job. We look at:
- The old material and how stubborn it is
- How easy the joints are to reach
- Mould in or behind the old joints
- Working hours on commercial sites
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, ring 0345 464 0079 or drop us an email and we will give you an honest view and a quote.
Asking for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Where the property is
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- Roughly how big the job is
If you’re in Westwell and need new build mastic, ring 0345 464 0079 or email us. Tell us what the problem is and where, and we’ll agree the price before any work begins.
How the visit works
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. After that, the work takes anything from a few hours to several days, depending on the number of plots. Somewhere like Westwell needs a little journey planning: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- Each joint is checked for movement before work begins.
- 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.
Preparing for the visit
- For indoor joints, keep the area dry beforehand if you can
- Plan for the work area to be out of bounds to pets and children
- Mention any parking rules near the property
How to get a quote
To get a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. We will send you a clear quote before any work starts.
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What we can’t put right
We won’t take on work that will not last, so these are the limits:
- Broken tiles or a split tray
- Plumbing faults behind the sealant
- Structural cracks in walls or ceilings
If you’re not sure, just phone 0345 464 0079 or email us and we will give you a straight answer before you book.
What we seal
- Windows & doors
- Bathrooms & en suites
- Plot handovers
- Skirting & floors
- Show homes
- Kitchens
Nearby places to Westwell
Also in Westwell
What new build mastic looks like in Westwell
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
For new homes near Charing station, it’s worth checking the sealant early, while snags are still fresh.
Westwell is about 4 miles north of Ashford, in Kent. Anywhere in TN25, our applicators can take on new build mastic. Westwell is one of 922 places in Kent where we work. We also work in Chelmsford, around 41 miles away.
Our applicators cover all of the TN25 postcode area for new build mastic. We also cover the places around Westwell: Tutt Hill (1 mile south-west), Ram Lane (1 mile west), Potters Corner (1 mile south), Westwell Leacon (2 miles west) and Hothfield (2 miles south-west). Larger places within reach include Maidstone (15 miles west), Ashford (4 miles south), Canterbury (12 miles north-east), Sittingbourne (11 miles north-west), Whitstable (14 miles north-east) and Faversham (9 miles north).
Around Westwell
The closest station to Westwell is Charing station, roughly 2.6 miles north-west of the centre. Well-known places in the area include County Square (3.2 miles south) and William Harvey Hospital (4.6 miles south-east).
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Watch for new gaps as the house dries out
- Put sealant faults on your snagging list early
- Record problems with dated pictures
- Avoid running a DIY bead over the old one
Don’t stand on the bath edge or the lip of the tray while the sealant cures. Report any movement in a bath or tray.
Leave a failed new-build seal and water can reach the floor and the ceiling below. Catching it early keeps the fix to the sealant.
DIY versus a professional finish
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
Westwell: your questions answered
I let a flat near Charing station. Can you help?
Yes, we work for landlords and letting agents. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will send you a clear quote.
Do you cover smaller places like Westwell?
Yes, smaller places are covered as well as towns. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Is it worth resealing while the house is still settling?
That depends on the joint. A leaking shower or bath seal should be redone right away, but cosmetic gaps can wait for movement to slow.
How long does new build mastic take?
It depends on the size of the job, but most jobs take a few hours in a single home. We’ll tell you when we quote.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. Photos by email help too.
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 agree the colour before we start.
Is there any odour?
There can be a smell while the sealant cures. Opening a window helps.
My new home is still under warranty. Should I contact you?
Your builder, if you are still in their snagging or warranty period. If that doesn’t work out, we are happy to quote.
How the job changes by surface
Show homes
In a show home, the sealant is on display. Every bead is neat and coloured to suit the room.
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 with baths filled first.