Kent · England
Remedial Sealant in Longfield
Remedial sealant across Longfield and nearby, with old sealant always removed completely and a one-year guarantee.
- Smears and lumps from a botched reseal
- Sealant that came away because the surface wasn’t prepared
- Movement joints that have split or pulled away
Remedial sealant in Longfield
If a joint has been resealed and is leaking again, it’s worth a proper look. It helps to have photos when you call 0345 464 0079 or email us. We are often asked to deal with leaks that keep coming back after resealing and dark patches showing through the sealant, across shrunken worktop sealant, mouldy bath & shower sealant and botched or over-sealed joints.
Around Longfield, it’s houses and cottages rather than flats. Sealant and grout wear out here just as they do anywhere: everything old comes out before the new sealant or grout goes in.
A one-year guarantee comes as standard, so you’re not left on your own once the job is done.
- Location
- Longfield (DA3)
- Region
- Kent
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Bathrooms and kitchens in Longfield
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Schools such as Longfield Academy are buildings too, and washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes. Homes close to Church of Saint Mary Magdalene include some older properties, and timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Longfield is about 3 miles south-west of Northfleet, in Kent. Whether you’re in the middle of Longfield or further out, we cover remedial sealant for every kind of property, from flats and houses to offices and hotels. We cover 922 towns and villages across Kent, large and small. London is on our list too, about 19 miles from Longfield.
Postcode districts we cover here for remedial sealant: DA3. Local streets include Station Road, Main Road and Ightham Close. Neighbouring places we cover for remedial sealant include Hartley (1 mile south), New Barn (1 mile east), Longfield Hill (1 mile south-east), New Ash Green (2 miles south) and Nash Street (2 miles east). Further out, we also cover Maidstone (13 miles south-east), Dartford (5 miles north-west), Sevenoaks (10 miles south-west), Gravesend (4 miles north-east), Tonbridge (14 miles south) and Northfleet (3 miles north-east).
Landmarks near Longfield
In Longfield, that means homes and buildings near Railway Tavern, Hartley Primary Academy and Rectory Meadow, among other places. There’s a railway station in Longfield itself: Longfield station. Other landmarks nearby include Darent Valley Hospital (3.3 miles north-west) and Stone Castle (3.4 miles north). The countryside around Longfield includes Sawyers Lake.
How it works
All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a few hours for a typical bath or shower, longer where several layers have been applied. Somewhere like Longfield needs a little journey planning: tell us about narrow lanes, gates, long drives and where we can park. We bring what the job needs, so it can be finished in one trip where possible.
- Surrounding tiles, trays and frames are protected first.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- New sealant goes in once the joint is dry, and is tooled smooth.
- We give you the cure time and explain what caused the failure.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Clear items away from the joints we’re working on
- Keep pets and children clear of the area while we work
Getting a quote
To get a quote, phone 0345 464 0079 or send us an email with the location and a short description of the problem. We’ll give you a clear price before any work starts.
Related advice
How to look after the new joints
After the cure time, these simple habits help:
- Never seal over old silicone
- Do not wait for a small gap to become a leak
- Never fill a movement joint with mortar or grout
- Check trays and worktops do not move
Clean gently: no scraping, scouring pads or harsh chemicals.
Mould under a second layer of sealant keeps growing out of sight. When it finally shows, the whole bead needs to come out.
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it doesn’t work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
For landlords and businesses
If you manage several properties in or around Longfield, several properties can be quoted together. Send us the addresses and the work at each, and photos by email help.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
Towns and villages near Longfield
Also in Longfield
Quotes for remedial sealant in Longfield
We don’t publish a price list. The quote depends on:
- How many areas need sealing
- The amount of work
- How much old sealant there is and how hard it is to remove
- Any working-time requirements on site
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
Asking for a quote
There’s no need for technical detail. Just tell us:
- Whether it’s a home or a business
- A few photos by email, if you can
- Any access issues, like height or stairs
- If someone has resealed it before
Asking for a quote is easy: tell us what needs doing and where. Photos by email help us understand the job, and we’ll come back to you with a quote.
Different surfaces, different methods
Worktops & kitchens
Shrunken worktop sealant leaves a gap that lets water into the back edge. It’s cut out, degreased and resealed in a colour to suit.
Leaking trays & enclosures
If the tray is cracked, or the leak is from the valve or waste, sealant won’t fix it. We say so rather than reseal.
Common problems we fix in Longfield
Water from somewhere else can ruin a good seal. A slow leak behind the tiles soaks the joint from the back, and the sealant lifts or goes mouldy from underneath.
Look out for any of the following:
- Wide, uneven beads that look worse than the old ones
- Sealant that came away because the surface wasn’t prepared
- A second bead peeling off the first
- Black mould underneath the bead
For landlords with property near Longfield station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
What your quote should include
- What the cure time is
- How much experience the applicator has
- Whether they seal over old material or remove it
- Whether they’re fully insured
FAQs for Longfield
I let a flat near Longfield station. Can you help?
Yes, rental work is part of what we do. You can phone 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before work begins.
Will you come out to Longfield?
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.
What happens if the problem is the tray or the plumbing?
We check for that before we reseal. If we find the leak is elsewhere, we tell you before going further.
Can you take off two layers of silicone?
Yes. Both layers come out; over-sealing fails because silicone will not bond to silicone.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Does remedial work come with a guarantee?
Yes, with our one-year guarantee. Where we have flagged another fault, it needs fixing for the joint to last.
Will it make a mess?
We keep the work tidy. We protect what’s around the joints, and we clear up when we’re done.
Where are you based?
We are a Crawley-based firm. We work across South East England, London and Scotland.