Greater London · England
Bath & shower resealing (mastic) in Coldharbour, Greater London
Bath, shower and sink resealing with new mould-resistant silicone in Coldharbour, carried out at your home and guaranteed for a year.
- Leaks at the edges
- Black mould in the sealant
- Gaps in the seal
Why it’s worth resealing in Coldharbour
Putting new silicone over old does not last. It soon peels, and mould stays trapped behind it. A proper reseal removes the old first. A repair typically costs much less than people expect, particularly next to the cost of replacement. Photos let us give you the exact figure.
Why choose Surface Doctor in Coldharbour
- Most jobs done in one visit
- Honest advice, even when it means no job
- One price list for the entire UK
- CHAS, Constructionline and SafeContractor accredited
Read our pricing.
Bath resealing in Coldharbour, done in place
A good reseal is all about preparation: every bit of old silicone out, mould treated, the joint clean and dry. Only then does the new sealant go on, in a neat, continuous bead. We regularly repair kitchen worktops & sinks, shower trays & enclosures and baths, and the jobs we see most are discoloured, yellow sealant and unsealed corners.
We guarantee the work for a year. If something is not right in that time, we come back and put it right.
- Where
- Coldharbour (SE9, BR7)
- Region
- Greater London
- Guarantee
- A year, on every repair
- Quote
- Fixed and free, based on photos
- Phone
- 0345 017 0787
- Last updated
- 23 October 2026
Our work in Coldharbour
Coldharbour is about 4 miles north-west of Orpington, in Greater London. Across the SE9 area, we come to you. Our repair technicians cover 764 places across Greater London. We work right across the region, from Coldharbour to London (about 8 miles away).
We work across SE9 and BR7. We regularly work on streets such as Green Lane, Horley Road and Dorset Road and the roads around them. We also travel to Mottingham (1 mile west), Chinbrook (1 mile west), New Eltham (1 mile north-east), Eltham (1 mile north) and Middle Park (1 mile north-west). We also work in nearby towns such as London (8 miles north-west), City of Westminster (11 miles north-west), Marylebone (10 miles north-west), Kensington (12 miles north-west), St Pancras (10 miles north-west) and Shoreditch (9 miles north-west).
Near you in Coldharbour
Typical jobs here are in homes near Elmstead Wood, St Thomas More Catholic Comprehensive School and Mottingham Primary School. Coldharbour’s nearest station is Mottingham station, about 0.6 miles north of the centre. Nearby you’ll also find Municipal Borough of Bromley (2.6 miles south-west) and Eltham Community Hospital (1.3 miles north). The countryside around Coldharbour includes The Tarn and Summer Hill.
Should I try a DIY kit first?
You can buy a DIY kit for most repairs, and they can make a small mark look better. The trouble is colour and preparation: kits come in a few standard shades, and without proper cleaning and keying the filler often lifts.
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 the old filler has to come out before a proper repair.
Repairs by material
Sinks and worktops
Basins, vanity units and kitchen worktops are resealed too, once the joint is completely dry.
Baths
We fill the bath before sealing, to open the joint fully.
How the visit works
Once we’re through the door, the aim is to do the job without disturbing the rest of your home. We mask off everything nearby, the job takes about two hours for a bath, depending on what we find, and we finish by cleaning up and talking you through the result.
- We protect the area and mask the joint lines.
- We remove the old sealant and every trace of residue.
- We clean, treat and dry the joint.
- Fresh silicone is applied in a continuous bead.
- The bead is smoothed, the tape removed and the seal left to cure.
How to prepare
- Let the surface dry out before the visit
- Keep pets and children out of the room while we work
- Tell us about any previous repairs or coatings
Ask for a price
Upload photos of the damage and one of the entire item, and tell us you’re in Coldharbour, and we will reply with a fixed quote.
Read more
Common questions in Coldharbour
Do I have to be there?
Yes. The technician needs access to the room for the visit, at a time we agree with you.
I’m a tenant. Can you help?
Yes, but check with your landlord or agent first. Landlords are frequently glad to have it sorted before the end of a tenancy.
How long before I can shower?
Typically after around 24 hours. We confirm before we leave.
Is a repair better than a new one?
Usually, when the rest is in good condition. A repair avoids removal and making good. We will tell you honestly if replacement makes more sense.
Is the work guaranteed?
Yes: twelve months. If there’s a problem with the work in that time, we come back and put it right.
Can you redo someone else’s repair?
Yes, we frequently do. It can add a little time, which we include in the quote.
Do you work for landlords and businesses?
Yes, frequently. We can quote for several properties together and work between tenancies.
Do you seal over the old sealant?
We always remove the old sealant completely. New silicone won’t bond to old.
Towns and villages near Coldharbour
Also in Coldharbour
How we price bath resealing
Prices are worked out job by job, from your photos. The main factors are:
- Doing more than one item at once
- Whether old repairs or coatings need taking off
- What kind of damage it is
- The size and number of damaged areas
No two jobs are quite the same, so we price each one individually. What’s damaged, how badly and how easy it is to reach all make a difference, and combining jobs on one visit brings the cost down.
Send pictures for a quote
Good photos mean an accurate price. Here’s what helps:
- A coin beside the damage so we can judge size
- One sharp close-up of the damage
- What it’s made of, if you know
- Good light, ideally daylight, without flash glare
A quote takes minutes to ask for: take one close-up and one wider shot of the bath or shower, add your postcode and send them to us. You’ll get a fixed price, not an estimate.
When a repair isn’t the answer
Not everything can be repaired, and we’ll tell you before we start. We can’t fix:
- Gaps so wide they need filling or trims before sealing
- A flexing bath
- Water damage behind the bath that needs a builder
Send us photos and we’ll tell you honestly.
Materials we repair
- Basins & vanity units
- Shower trays & enclosures
- Wet rooms
- Baths
- Kitchen worktops & sinks
Looking after it afterwards
Looking after the surface is easy:
- Reseal at the first sign of lifting
- Clean the joints with a mild cleaner
- Open a window after bathing
- Dry the seal after bathing
Good ventilation is the best protection, and wipe the joints after use.
If you notice damp, stains on the ceiling below or loose tiles, act quickly. It may be more than a reseal, so we will tell you if it needs a builder or plumber.
Work for landlords and builders
Letting agents frequently send us pictures straight from the inventory. You can have a price before you arrange access, and we can arrange access with the tenant directly if that helps.
We’re used to working with agents and managing companies. Just send photos, the address and how to get access and we will handle the rest.
About our accreditations · Every repair comes with a one-year guarantee.
