Greater London · England
Crook Log Remedial Sealant
Removing failed, mouldy or leaking sealant and putting it right for householders, landlords and businesses in Crook Log. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Leaks that keep coming back after resealing
- Floor or wall movement joints that have failed
- Products that weren’t meant for the joint
How we handle remedial sealant in Crook Log
Two decades of sealant work means we recognise most failures quickly. We are ARBOMaster approved and fully insured, and remedial work carries our 12-month guarantee. Typical jobs include products that weren’t meant for the joint and repeat leaks from the same joint, on leaking tray & enclosure joints, shrunken worktop sealant and mouldy bath & shower sealant.
Much of London’s older housing is Victorian and Edwardian terraces, many of them now split into flats, with bathrooms fitted into whatever space was available. Small, steamy rooms are where mould gets into sealant and grout fastest.
Every job is covered by our one-year guarantee.
- Where
- Crook Log (DA7, DA6, DA16)
- Wider area
- Greater London
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
Should I try it myself first?
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Remedial sealant in Crook Log: local notes
London has hard water, which leaves limescale on sealant, grout and taps, and it has to be cleaned off before new sealant goes in. In a London flat, water from a failed bath or shower seal can reach the neighbours below, so tired sealant is best dealt with early.
Crook Log is in London, so parking needs planning: tell us about permits, visitor bays or off-street space when you book. For landlords with property near Bexleyheath station, botched sealant from a previous quick fix is easier to strip out between tenants.
Crook Log is about 3 miles south-east of Plumstead, in Greater London. We provide remedial sealant to homeowners, landlords and businesses in Crook Log and nearby. Our area takes in 764 places across Greater London, from the larger towns to small villages. Our London page covers work nearby, about 10 miles away.
Work in DA7, DA6 and DA16 is quoted and booked the same way as anywhere else. You’ll find streets such as Bean Road, Lion Road and Alers Road, and we cover them all. We also cover the places around Crook Log: Upton (1 mile east), Bexleyheath (1 mile east), Welling (1 mile west), Blendon (1 mile south) and Bexley (1 mile south). Larger places within reach include London (10 miles west), City of Westminster (13 miles west), Marylebone (12 miles west), Kensington (14 miles west), St Pancras (11 miles north-west) and Shoreditch (10 miles north-west).
Local landmarks in Crook Log
We work in homes and buildings around Danson Park, St Columba's Catholic Boys' School and The Crook Log Public House. Crook Log has its own railway station: Bexleyheath station. Other landmarks nearby include Bexley Museum (1.7 miles south-east) and Broadway Shopping Centre (0.9 miles east). Not far away are Summer Hill and Wansunt Pit.
Nearby places to Crook Log
Other services in Crook Log
Signs you need remedial sealant in Crook Log
Even good sealant ages. Mould grows into the silicone, the surface hardens and the bead shrinks, faster where ventilation is poor. At that point it has to come out.
Keep an eye out for any of the following:
- Products that weren’t meant for the joint
- Wide, uneven beads that look worse than the old ones
- Worktop sealant that has shrunk and split
- A shower that leaks however often it’s resealed
If you live in an older home near Trinity Baptist Church, timber floors under older bathrooms flex, so joints need a sealant that moves with them.
Questions to ask before booking
- Who turns up on the day
- The length of the guarantee
- How the colour is chosen
- Whether all the old sealant comes out first
Your questions about remedial sealant in Crook Log
Could a tired shower seal in my Crook Log flat affect the neighbours below?
Yes, it can. Water that gets past failed sealant or cracked grout can run under the bath or tray and show up on the ceiling below. It’s far simpler to replace tired sealant early than to deal with a neighbour’s ceiling.
Can parking be tricky for a visit in Crook Log?
London parking needs a little planning, so let us know about permits, bays or a driveway when you book. That way the visit can be planned around it.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you fix expansion and movement joints?
Yes. If a joint has been filled with mortar or rigid filler, we rake it out where possible, and reseal with a flexible product.
Do you work for landlords and businesses?
Yes, we do. We work in homes, commercial premises and hotels.
Do you work in Crook Log?
Yes. We are based in Crawley and work across South East England, London and Scotland.
Can you strip sealant from an acrylic tray safely?
Yes. We cut and lift the old sealant with tools suited to the surface, and the residue is cleaned away. We point out any damage that is already there.
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Failed sealant is one of the commonest items on a check-out report. Several properties can go on one quote.
What sealant work cannot fix
We won’t take on work that won’t last, so these are the limits:
- A bath, tray or worktop that moves until it’s properly fixed
- A leaking trap, valve or supply pipe
- Cracks in the fitting rather than the joint
Not sure which it is? You can phone 0345 464 0079 or send us an email and we will tell you honestly before booking.
Joints and surfaces we work on
- Expansion joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Botched or over-sealed joints
- Failed movement joints
Surface by surface
Movement & expansion joints
Some movement joints have been filled with mortar or grout. We rake that out where it can be removed and seal with a flexible product.
Worktops & kitchens
A loose worktop splits its sealant. That needs refixing before resealing, which we will point out.
What happens on the day
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes a few hours, depending on how many layers have to come out. In Crook Log, 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.
- We strip the joint completely, removing any layers below.
- Next, any mould is treated and the joint dried.
- Where the joint moves, backing and a flexible sealant suited to the movement go in.
- The new joint is tooled neatly and we explain anything else we found.
Preparing for the visit
- For business premises, tell us about site rules or sign-in
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
Getting a quote
For remedial sealant in Crook Log, call 0345 464 0079 or email us. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Read more
How we quote for remedial sealant
You will get a clear quote before work begins. It takes into account:
- Which sealant suits the joint
- Any mould that needs treating
- How many rooms, windows or areas are involved
- The number and length of the joints
Combining jobs into one visit normally makes better use of the time than several visits. You’ll get one clear quote for the whole job.
What we need to know
To help us quote quickly, please include:
- The problem you’ve noticed
- Whether it has been sealed before
- Access, such as stairs, a lift or height
- Where the property is
Need a quote? Please phone 0345 464 0079 or email us with a few details. We’ll explain what we’d do and send you a clear quote before we start.