Greater London · England
Remedial sealant & repairs in Upminster, Greater London
Removing failed, mouldy or leaking sealant and putting it right for Upminster, backed by a one-year guarantee. Ask us for a quote.
- Caulk or the wrong sealant used in a wet area
- Worktop sealant that has shrunk and split
- Sealant that came away because the surface wasn’t prepared
About our remedial sealant in Upminster
With more than 20 years’ experience, our applicators have seen most of the ways sealant can fail. We’re fully insured ARBOMaster approved applicators, and every remedial job comes with a 12-month guarantee. Common call-outs are for dark patches showing through the sealant and gaps opening along the back of the worktop, on failed movement joints, botched or over-sealed joints and shrunken worktop sealant.
In much of London, period terraces have been converted into flats over the years, with bathrooms fitted into whatever space was available. A compact bathroom that steams up every day is hard on silicone and grout, and homes in Upminster are no different.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Where
- Upminster (RM14, RM11)
- Region
- Greater London
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Aftercare tips
Good habits help new joints last longer. Our tips:
- Clean sealant with mild products only
- Run the fan after every shower
- Check trays and worktops don’t move
- Check ceilings under showers for marks
Where we have pointed out another fault, have it put right, because the new sealant cannot hold back a problem underneath.
Mould under a second layer of sealant keeps growing out of sight. By the time it shows through, the joint is well past saving.
How it works
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours, depending on how many layers have to come out. In Upminster, flats, stairs and shared entrances are part of the routine. Mention any building rules, key holders or managing agents when you book.
- We look at how the sealant has failed and check for movement or a leak path.
- Every layer of old sealant is cut and cleaned out.
- Next, any mould is treated and the joint dried.
- Moving joints get backing and a flexible sealant to suit.
- The new joint is tooled neatly and we explain anything else we found.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Plan for the work area to be out of bounds to pets and children
Getting a quote
We quote each job on its own, so start by telling us what you need. Just call 0345 464 0079 or send us an email with the details.
Read more
Common problems we fix in Upminster
Sealant needs a clean, dry surface with no grease on it. Residue, moisture or dust left in the joint weaken the bond, and the joint starts to come away early.
The most common problems we see are:
- Mould trapped under a layer of silicone
- A shower that leaks however often it’s resealed
- Worktop sealant that has shrunk and split
- Sealant applied over old sealant that has lifted
Upminster is in London, so parking needs planning: let us know about parking bays, permits or a driveway.
What your quote should include
- Which sealant they’ll use, and why
- Who does the work, and how experienced they are
- Whether they’re fully insured
- Whether VAT is included
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- Water damage behind tiles that needs a tiler
- Cracks in the fitting rather than the joint
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we will tell you honestly.
Joints and surfaces we work on
- Mouldy bath & shower sealant
- Failed movement joints
- Expansion joints
- Leaking tray & enclosure joints
- Shrunken worktop sealant
- Botched or over-sealed joints
Remedial sealant in Upminster: local notes
London has a lot of flats and conversions, and a failed shower or bath seal in one can show up on the ceiling below, which is why it’s worth fixing early. London has hard water, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Schools such as Upminster Junior School are buildings too, and we reseal washrooms and kitchens in schools and businesses as well as homes. Rented homes near Upminster station change hands often, and botched sealant from a previous quick fix is easier to strip out between tenants.
Upminster is about 2 miles east of Hornchurch, in Greater London. Across the RM14 area, our applicators can take on remedial sealant. Our Greater London coverage runs to 764 places, Upminster among them. You can also see our page for London, roughly 16 miles from Upminster.
Our applicators cover all of the RM14 and RM11 postcode area for remedial sealant and the streets around it. You’ll find streets such as Station Road, Latham Place and Deyncourt Gardens, all of which we cover. If you are just outside Upminster, we cover Upminster Bridge (1 mile west), Cranham (1 mile east), Emerson Park (1 mile north-west), Hornchurch (2 miles west) and Puddle Dock (2 miles east). We also work in nearby towns such as Shoreditch (14 miles west), Walthamstow (12 miles west), Hoxton (15 miles west), Whitechapel (14 miles west), Orpington (14 miles south-west) and Highbury (15 miles west).
Local landmarks in Upminster
Locally, jobs take us to homes and businesses close to Eastbrook School, St. Andrew's Park and The Crumpled Horn pub, among other places. There’s a railway station in Upminster itself: Upminster station. A little further out are Upminster Tithe Barn Museum of Nostalgia (0.5 miles north) and The Mercury Mall (3.2 miles north-west). For a walk, there’s Cranham Marsh.
Towns and villages near Upminster
Also in Upminster
FAQs for Upminster
Is parking an issue for remedial sealant in Upminster?
Parking in Upminster, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Can worn sealant in a flat in Upminster cause a leak downstairs?
Yes, and the first sign is often a stain on the ceiling below. A proper reseal before the leak starts is the easy fix.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
Is remedial work guaranteed?
Yes. You get our 12-month guarantee, and we’re fully insured.
Where are you based?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little.
Do you work in Upminster?
Yes, we do. Upminster is part of the area we cover, and the service is the same as everywhere else.
Why it’s worth doing now in Upminster
Stripping out botched sealant adds time to a reseal, but not by much: it takes a few hours for a typical bath or shower, longer where several layers have been applied. It’s far less disruption than resealing the same joint again and again. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Putting it right early is much less trouble.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
Why us?
- Full insurance on every job
- Rated 4.9 stars on Google
- Trusted Arbo and Everbuild sealants
- Experience in homes, commercial sites and hotels
Take a look at how sealant jobs are priced or customer reviews.
Work for landlords, hotels and businesses
In hotels, rooms out of use cost money, so the work can be planned room by room. We have worked in hotels as well as homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.