Hertfordshire · England
Boxmoor Remedial Sealant
Our applicators work in Boxmoor on removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly.
- Sealant that came away because the surface wasn’t prepared
- Mould trapped under a layer of silicone
- Smears and lumps from a botched reseal
What affects the cost of remedial sealant
There’s no set price list, because jobs vary so much. What we look at:
- Any mould that needs treating
- The type of sealant required
- Any working-time requirements on site
- How much old sealant there is and how hard it is to remove
A few things move the cost up or down: how much old sealant there is and how stubborn it is, any mould to treat, and whether the work is at height. Your quote takes all of that into account.
Helping us quote
To make quoting easier, please include:
- How many joints, rooms or windows are involved
- The type of property
- What the problem is, such as mould, gaps, leaks or cracking
- A few pictures by email, if you can
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll explain what’s involved before giving you a price.
Remedial sealant in Boxmoor
Water on the floor does not always mean failed silicone. Cracked trays, leaking wastes and faulty valves often look like a sealant problem. When the fault is elsewhere, we say so instead of resealing for the sake of it. Common call-outs are for black mould underneath the bead and sealant applied over old sealant that has lifted, across leaking tray & enclosure joints, mouldy bath & shower sealant and botched or over-sealed joints.
Homes around Boxmoor range from older cottages to more recent houses. Older homes can move a little with the seasons, which is hard on tired sealant and rigid grout.
All our work comes with a one-year guarantee.
- Place
- Boxmoor (HP1, HP3, HP2)
- Wider area
- Hertfordshire
- Cover
- One year on every job
- Price
- A clear quote up front
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
Questions from Boxmoor
Can you help a landlord with a rental near Hemel Hempstead station?
Yes, landlords and agents are among the people we work for. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Should the sealant in an older Boxmoor home be renewed?
In most cases, yes, if it hasn’t been done for a while. Sealant doesn’t last for ever, and its life depends on use, cleaning and weather.
Can you take off two layers of silicone?
Yes. Stripping layered sealant takes longer than a normal reseal, but it’s what makes the new bead last.
Do I have to be there?
It depends on the job. Inside work needs someone to give us access.
What happens if the problem is the tray or the plumbing?
You will hear it from us. If it’s a cracked tray, a failed valve or a leaking waste, resealing will not fix it, so we will not pretend it will.
Do you guarantee remedial jobs?
Yes, for 12 months. If we have pointed out another problem, getting it fixed helps the new joint last.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Do you work in Boxmoor?
Yes. We cover Boxmoor. For a quote, call 0345 464 0079 or send us an email.
What sealant work cannot fix
To be straight with you, there are a few things sealant won’t fix:
- Sealant in an older building that needs testing for asbestos first
- A tray or worktop that needs refixing first
- Failed tanking or loose tiles behind the sealant
Not sure which it is? You can call 0345 464 0079 or drop us an email and we will tell you honestly.
Where we work in Boxmoor
- Failed movement joints
- Expansion joints
- Botched or over-sealed joints
- Mouldy bath & shower sealant
- Shrunken worktop sealant
- Leaking tray & enclosure joints
What the job involves on each surface
Leaking trays & enclosures
A cracked tray, failed valve or leaking waste needs a different fix. We say so rather than reseal.
Worktops & kitchens
Kitchen joints hold grease and residue, so cleaning takes longer than in a bathroom before resealing.
DIY sealant or a professional job?
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
Remedial sealant in Boxmoor: local notes
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings. Hemel Hempstead, which Boxmoor is part of, is one of England’s post-war new towns. With many homes dating from the post-war decades, plenty of bathrooms have been resealed or refitted more than once. Sealant laid over old sealant never bonds properly, so it all has to come out.
Managing a site like Boxmoor Primary School? Then its toilets, changing areas and kitchens need their sealant renewed like any other building’s. Letting a property close to Hemel Hempstead station? Then a joint that keeps failing is best fixed properly while the property is empty. For an older house near a landmark such as Church of St John the Evangelist and Attached Church Hall, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
Boxmoor is about 1 mile south-west of Hemel Hempstead, in Hertfordshire. Every kind of property in Boxmoor can book us for remedial sealant. Every job comes with our 12-month guarantee. Our Hertfordshire coverage runs to 381 places, and Boxmoor is one of them. Our London page covers work nearby.
All of HP1, HP3 and HP2 is within our area for remedial sealant, from the main roads to the quietest streets. That includes homes and businesses on Cardy Road, Heath Lane and London Road and the roads around them. With the A4251 close by, Boxmoor is easy for our applicators to reach. We also cover Warner's End (1 mile north), Grovehill (1 mile north-east), Woodhall Farm (1 mile north-east), Apsley (1 mile south-east) and Hemel Hempstead (1 mile north-east). Within a short drive, we also cover Watford (7 miles south-east), St Albans (7 miles east), Welwyn Garden City (13 miles east), Harpenden (8 miles north-east), Hatfield (11 miles east) and Borehamwood (11 miles south-east).
Around Boxmoor
Locally, jobs take us to homes and businesses close to Gadebridge Park, The Hemel Hempstead School and Fishery Inn. Boxmoor has its own railway station: Hemel Hempstead station. Other landmarks nearby include Hemel Hempstead Hospital (0.7 miles north-east). The countryside around Boxmoor includes Long Deans.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Check ceilings under showers for marks
- Air the bathroom so the sealant can dry
- Act on a lifting corner straight away
- Keep movement joints clear of mortar and paint
Clean gently: no scraping, scouring pads or harsh chemicals.
Don’t keep resealing the same joint. Get the cause found first, otherwise the next attempt will fail too.
Leave it or put it right?
Stripping out botched sealant adds time to a reseal, but rarely a lot: the work takes a few hours for a typical bath or shower, longer where several layers have been applied. Compared with chasing the same leak every few months, it’s time well spent. In an older home around Boxmoor, damp from a failed joint can get into timber and plaster, and that’s a much bigger job than renewing the sealant.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we will explain what it covers.
Why book with us
- Full insurance on every job
- More than 20 years in sealant work
- White, clear, grey or another colour, product permitting
- Domestic, commercial and hotel work
See our cost guide and our reviews.
Places near Boxmoor
Other services in Boxmoor
What we do, step by step
On the day, we look over the joints with you first, so you know exactly what we’re doing. Surfaces next to the work are protected before any work starts. The work generally takes a few hours for most joints, depending on how much old sealant has to come out. For a job in Boxmoor, we agree the time, the access and parking before the day. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- The failure is looked at first, so we know whether it’s sealant, movement or water from elsewhere.
- Old beads and residue are removed down to clean surfaces.
- Mould is treated and the joint dried.
- We reseal with a product suited to the joint, backed where needed.
- The joint is tooled and you are told about anything else we found.
How to prepare
- Mention any sign-in or site rules at work premises
- Let us know if you’ve seen damp or leaks
- Let us know about earlier repairs to the joints
Get a quote
If you’re in Boxmoor and need remedial sealant, call 0345 464 0079 or drop us an email. Tell us what the problem is and where, and we’ll agree the price before any work begins.