Monmouthshire · Wales
Bath & shower resealing (mastic) in Llangwm, Monmouthshire
Our repair technicians come to Llangwm for bath, shower and sink resealing with new mould-resistant silicone. Nothing is taken out, with a one-year guarantee.
- A messy previous reseal
- Old sealant that looks dirty
- Damp near the bath

How we handle bath resealing in Llangwm
We reseal baths, shower trays, basins and worktops. Most jobs take a couple of hours. We work on baths, wet rooms and basins & vanity units, and common reasons people get in touch are black spots in the silicone and silicone smeared on tiles.
The work is covered for a year after we finish. If anything isn’t right, ring us and we will sort it.
- Location
- Llangwm (NP15)
- Area hub
- Monmouthshire
- Guarantee
- A year, on every repair
- Quote
- Fixed and free, based on photos
- Telephone
- 0345 017 0787
- Last updated
- 23 October 2026

Llangwm and nearby
Llangwm is about 8 miles north-west of Chepstow, in Monmouthshire. We work in every kind of home, from flats and terraces to detached houses and new builds, as well as offices, shops and holiday lets. Llangwm is one of 115 towns and villages in Monmouthshire where we work. You can also see our page for Birmingham, about 67 miles away.
We work across NP15 and the streets around it. Other places close to Llangwm include Gaer-fawr (1 mile south-east), Llantrisant Fawr (2 miles south-west), Llanvaches (5 miles south), Parc-Seymour (5 miles south) and Coedycaerau (6 miles south-west). Further out, we also cover Chepstow (8 miles south-east), Abergavenny (12 miles north-west), Monmouth (9 miles north-east), Cil-y-coed (8 miles south-east), Pen-y-pound (12 miles north-west) and Bulwark (8 miles south-east).
Landmarks near Llangwm
Around Llangwm, we work in homes near St John's Church. Nearby you will also find Rockfield Farm Motte (0.7 miles north) and Model Farm Folk Museum and Craft Centre (1.2 miles east). Not far away are Pen Ty-Wilson.
Work for landlords and builders
Builders use us to fix snagging damage before handover, saving last-minute replacements. Several plots can be done in one visit to keep costs down.
Letting agents often send us pictures straight from the inventory. That means we can quote before you even visit the property, and we can arrange access with the tenant directly if that helps.
Different materials, different repairs
Sinks and worktops
We reseal basins, vanity tops and kitchen worktops, with the joint fully dried first.
Shower trays
Trays are sealed with weight on them, so the joint is at its widest.
What we cannot put right
We will not take on work that won’t last, so here’s what a repair can’t put right:
- A flexing bath
- Very wide gaps that need a trim
- Hollow or loose tiles
Send us pictures and we will tell you honestly before you book.
Materials we work on in Llangwm
- Kitchen worktops & sinks
- Baths
- Wet rooms
- Shower trays & enclosures
- Basins & vanity units
Llangwm: your questions answered
Can new silicone go over old?
All the old sealant comes out. Fresh silicone does not stick to old.
What happens once I’ve sent photos?
We look at the photos and reply with a fixed price and some dates. If anything’s unclear, we will ask for another photo.
Can tenants book a repair?
Yes, though it’s best to check with your landlord first. Many landlords are happy for a repair to be arranged.
Do I have to be there?
Yes. The technician needs access to the room for the visit, at a time that suits you.
Are you accredited?
We’re accredited with CHAS, Constructionline, SafeContractor, SMAS Worksafe and Builder’s Profile.
Do you come to Llangwm?
Yes. We cover the entire UK and come to Llangwm. Send us photos for a fixed quote, or call 0345 017 0787.
How long does resealing take?
Generally a couple of hours, then it needs to cure.
What does bath resealing cost?
We give a fixed quote based on photos of the damage. Send a close-up and a picture of the whole item with your NP15 postcode.
Aftercare tips
So the finish stays in good condition:
- Clean the joints with a mild cleaner
- Do not stand toiletries on the seal
- Reseal when black spots will not clean off
- Let steam out after showers
Good ventilation is the best protection, and dry the joints after bathing.
Do not wait until water gets behind the bath. Gaps or lifting edges mean it needs doing.
Is resealing worth it?
Resealing is routine maintenance. Leaving split or mouldy sealant lets water get behind the bath or tray, which costs far more to put right. There are no surprise extras on the day. What we quote from your photos is what you pay, and if the damage turns out to be different, we discuss it before starting.
Why book with us
- One price list for the whole UK
- No need to remove anything
- Straight answers about what a repair can do
- A year’s guarantee on all work
Take a look at our full price list.
Other services in Llangwm
What we are called out for in Llangwm
Sealant doesn’t last forever. Each shower leaves moisture and soap behind, which mould feeds on, and the joint flexes each time the bath fills.
The things customers generally mention when they call are:
- Damp near the bath
- Old sealant that looks dirty
- A messy previous reseal
- Mould you can’t clean out
Before you book anyone
- How soon you can use it again
- What protection goes down before work starts
- The length of the guarantee and what it covers
- Whether a trained technician does the job
DIY kit or professional repair?
It’s natural to want to try a repair yourself. The risk is that a kit repair hides the damage for a while, then fails, and then the old filler has to be removed first.
You can buy a DIY kit for most repairs, and they can tidy up a tiny mark. Where they fall down is colour and preparation: kits come in a few standard shades, and without proper cleaning and keying the filler often lifts.
The process
Once we are through the door, we keep the work contained to the one room. We mask off everything nearby, the job takes a couple of hours, and we finish by cleaning up and talking you through the result.
- First we strip out every bit of the old mastic.
- Next we clean the joint and deal with mould.
- The joint is dried thoroughly.
- We fill a bath with water before sealing so the gap is at its widest.
- New mould-resistant silicone goes on and is tooled to a neat finish, including around the taps.
How to prepare
- Mention if the room is upstairs or in a flat
- Keep a parking space free if you can
- Clear the area around the damage
Ask for a price
Pricing is simple: take a close-up of the damage and a picture from further back, send them over with your postcode, and we will reply with a fixed quote. Quotes are free and you are under no obligation.
Related advice
About our accreditations · Every repair comes with a one-year guarantee.

