Greater London · England
Bath & shower resealing (mastic) in Underhill, Greater London
Our repair technicians come to Underhill for bath, shower and sink resealing with new mould-resistant silicone. Everything is done in place, and the work is guaranteed.
- Silicone smeared on tiles
- Black spots in the silicone
- Gaps by the taps
Bath resealing in Underhill, done in place
Preparation is everything in a reseal: old silicone removed, mould treated, the joint cleaned and dried. Then the fresh sealant goes on, as one neat, continuous bead. Whether it’s black mould in the sealant and gaps in the seal, we can help, whatever the material.
Every repair is covered by a one-year guarantee, wherever you are in Greater London.
- Where
- Underhill (EN5, N20)
- Area hub
- Greater London
- Guarantee
- 12 months on all our work
- Price
- Free and fixed, from your pictures
- Telephone
- 0345 017 0787
- Page updated
- 23 October 2026
Do you need bath resealing in Underhill?
A bathroom without good ventilation is hard on sealant: damp hangs around, and mould takes hold.
Look out for any of the following:
- Water getting behind the bath or tray
- Silicone coming away from the tiles
- Silicone smeared on tiles
- Discoloured, yellow sealant
What to look for in a quote
- How long the guarantee is and what it covers
- How the colour is matched
- A fixed price, and whether VAT is included
- Whether there are any call-out or travel charges
Prices and what affects them
We don’t charge extra for travel to Underhill. The price comes down to:
- Previous DIY repairs that have to come out
- Unusual colours or finishes
- How much damage there is
- Where the damage is and how we get to it
Instead of hourly rates, we price the entire job up front. It depends on the damage, the material and access, and doing several items at once reduces it.
How to get a fixed price
Before you send pictures, a few simple things make all the difference:
- Any details about the material
- A wider photo showing the whole bath or shower
- A close-up of the damage, in focus
- A coin or ruler next to the damage for scale
Ring 0345 017 0787, or send us pictures through the quote form. With a clear picture of the damage and one of the whole bath or shower, we can give you a fixed quote without visiting.
Where we work around Underhill
Underhill is about 1 mile west of Barnet, in Greater London. Wherever you are in the EN5 postcode area, a technician comes to you. We work in 764 places in Greater London, from the larger towns to small villages. Our nearest city page is London, about 11 miles away.
Our visits in EN5 and N20 are booked in the same way as anywhere else. From Park Road, May's Lane and Manor Road or anywhere nearby, we can come to you. Other places close to Underhill include Barnet (1 mile east), New Barnet (1 mile east), Monken Hadley (1 mile north), Hadley Wood (1 mile north-east) and Cockfosters (2 miles east). Within a short drive, we also cover London (11 miles south-east), City of Westminster (9 miles south), Marylebone (9 miles south), Kensington (10 miles south), St Pancras (9 miles south) and Shoreditch (10 miles south-east).
Near you in Underhill
Locally, our jobs take us to homes close to Queen Elizabeth's Girls' School, Highlands Gardens and St John the Baptist Church, among other places. You will also find The Red Lion pub (within half a mile north), Susi Earnshaw Theatre School (0.5 miles north-west) and St Catherine's RC School (less than half a mile north-east). For rail, the closest station is New Barnet station, about 1 mile east. Nearby you will also find Barnet General Hospital (0.9 miles west) and Francis Skaryna Belarusian Library and Museum (2.2 miles south). For a walk, there’s Greenhill Gardens and Darland's Lake.
- Other local spots include Barnet Urban District (within half a mile north-west)
Also near Underhill
Also in Underhill
The process
Nothing needs to be moved out of the room beforehand. We bring everything we need with us, lay protective sheets and get going once we have agreed what we’re doing. It generally takes a couple of hours, and you’re welcome to carry on with your day while we work.
- First we strip out every bit of the old mastic.
- We clean the joint and treat any mould.
- We dry the joint thoroughly.
- Baths are filled with water first, so the joint is at its widest.
- We apply new mould-resistant silicone and tool it to a neat finish, taps included.
Preparing for the visit
- Point us to the nearest place to park
- Let us know which floor the room is on
- Tell us about parking, stairs or access
Getting a price
Most clients in Underhill get their price from photos. Add a line about what happened and your postcode, and we’ll send back a fixed quote and some dates.
Related advice
When a repair is not the answer
We would rather lose a job than do one that will not last, so these are the limits:
- Hidden water damage
- Very wide gaps that need a trim
- A flexing bath
Send us photos and we will tell you honestly before booking.
Surfaces we repair
- Baths
- Basins & vanity units
- Kitchen worktops & sinks
- Wet rooms
- Shower trays & enclosures
FAQs for Underhill
How do I get a price for bath resealing in Underhill?
Every job gets a fixed quote based on photos of the damage. Send a close-up and a picture of the entire item with your EN5 postcode.
Do you charge for travel?
There is no separate call-out charge. The fixed quote covers the visit and the work.
Can I get a quote without a visit?
In nearly every case. We only ask to see it in person if the photos cannot show what we need.
What areas do you cover?
We cover the entire UK, including Underhill and the rest of Greater London. Just include your postcode and we’ll offer you dates.
Why does my sealant keep going mouldy?
Mould needs moisture. Run the fan, dry the joints and the new seal stays cleaner for longer.
Is the work guaranteed?
Yes: twelve months. If anything goes wrong with the repair within the year, we return to fix it.
How long does silicone take to cure?
We’ll give you the curing time, usually around a day.
What happens once I’ve sent pictures?
You get a fixed price and available dates. If anything’s unclear, we’ll ask for another photo.
Aftercare tips
Simple care helps the repair last. Our advice:
- Reseal at the first sign of lifting
- Open a window after bathing
- Run the extractor fan during and after showers
- Don’t stand toiletries on the seal
Leave the sealant to cure for the time we give you, generally around 24 hours.
Black mould in sealant is not just unsightly. An early reseal keeps water where it belongs.
DIY repairs versus a professional job
Kits are cheap and easy to find, but the repairs we redo most often are DIY ones that have discoloured or lifted. Doing it properly first is generally the cheaper route.
DIY kits are sold for most surfaces, and they can make a small mark look better. 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.
What your bath or shower is made of matters
Shower trays
We put weight on a tray before sealing it, for the same reason.
Baths
We fill the bath before sealing, to open the joint fully.
Why it’s worth resealing in Underhill
Compared with repairing water damage, resealing is cheap. It’s quick, tidy and protects your home. The price depends on the type and amount of damage, what it’s made of and how many items we do on one visit. We give a fixed quote from your pictures, so there are no surprises on the day.
What you get with us
- Generally one visit, start to finish
- No need to remove anything
- Work done at your home or business
- A year’s guarantee on all work
Read our full price list.
About our accreditations · Every repair comes with a one-year guarantee.
