Hertfordshire · England
Remedial sealant & repairs in Hemel Hempstead, Hertfordshire
Removing failed, mouldy or leaking sealant and putting it right in Hemel Hempstead, with a one-year guarantee on every job. Ask us for a quote.
- A second bead peeling off the first
- Repeat leaks from the same joint
- Floor or wall movement joints that have failed
What we cannot put right
We will always be straight with you, so here’s what sealant cannot fix:
- A bath, tray or worktop that moves until it’s properly fixed
- A leaking trap, valve or supply pipe
- Sealant in an older building that needs testing for asbestos first
Not sure which it is? You can phone 0345 464 0079 or email us and we’ll tell you honestly.
Surfaces we seal
- Failed movement joints
- Botched or over-sealed joints
- Expansion joints
- Leaking tray & enclosure joints
- Shrunken worktop sealant
- Mouldy bath & shower sealant
Remedial sealant for homes and businesses in Hemel Hempstead
In Hemel Hempstead, as anywhere, remedial jobs tend to look alike: over-sealed joints, hidden mould, repeat leaks and split movement joints. We strip each one back and start from scratch. If you have beads that never stuck properly and smears and lumps from a botched reseal, we can help, on botched or over-sealed joints, leaking tray & enclosure joints and shrunken worktop sealant alike.
A large town like Hemel Hempstead has plenty of rented homes, and bathrooms in rentals work hard. Sorting the joints between tenancies keeps leaks at bay and makes a property easier to let.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Place
- Hemel Hempstead (HP2, HP3, HP1)
- Wider area
- Hertfordshire
- Cover
- One year on every job
- Quotes
- A clear price before we start
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
Remedial sealant around Hemel Hempstead
Hard water is the norm across most of the South East, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in. Hemel Hempstead is one of the post-war new towns. Many homes date from the post-war decades, so bathrooms and kitchens may be on their second or third set of sealant. Sealant laid over old sealant never bonds properly, so it all has to come out.
Managing a site like Broadfield Academy? Then its toilets, changing areas and kitchens need their sealant renewed like any other building’s. For landlords with property near Apsley station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Hemel Hempstead is about 24 miles north-west of London, in Hertfordshire. We provide remedial sealant to homes and businesses in Hemel Hempstead and the surrounding area. Hemel Hempstead is one of 381 towns and villages in Hertfordshire where we work. You can also see our page for London, about 24 miles away.
We cover every part of the HP2, HP3 and HP1 postcode area for remedial sealant. Local streets include The Queen's Square, High Street and Sun Square, all of which we cover. Being close to the A41 and A414, Hemel Hempstead is easy for our applicators to reach for remedial sealant. If you’re just outside Hemel Hempstead, we cover Grovehill (1 mile west), Woodhall Farm (1 mile west), Adeyfield (1 mile north-east), Highfield (1 mile north) and Bennetts End (1 mile south-east). Larger places within reach include Watford (7 miles south-east), St Albans (6 miles east), Welwyn Garden City (12 miles east), Harpenden (6 miles north-east), Hatfield (10 miles east) and Borehamwood (10 miles south-east). Hemel Hempstead is one of the larger places we cover in Hertfordshire.
Near you in Hemel Hempstead
Around Hemel Hempstead, our work takes us to homes and buildings near Gadebridge Park, The Full House and Adeyfield School and the streets around them. The nearest railway station is Apsley station, about 1.4 miles south of the centre. A little further out are Redbourn Museum (4 miles north-east) and Hemel Hempstead Hospital (0.5 miles west). Open spaces near Hemel Hempstead include Verulamium Lake and Long Deans.
How the job changes by surface
Leaking trays & enclosures
When failed joints are the cause, they’re all cut out and renewed, tray edges and screen profiles included.
Over-sealed & botched joints
Previous removal attempts can leave scratches or gouges. We take care not to make it worse, and tell you about any damage we find.
Hemel Hempstead questions
Should the sealant in an older Hemel Hempstead home be renewed?
Often, yes: cracked, shrunken or mouldy sealant has done its job. The key is cutting all the old sealant out, as new sealant won’t bond to it.
Do you work for landlords with property near Apsley station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Do you work in Hemel Hempstead?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator and we are fully insured too.
My shower still leaks after a reseal. Can you sort it?
Yes. There’s normally a reason: sealant over sealant, movement or another leak, and we deal with the cause first.
Can you strip sealant from an acrylic tray safely?
Yes. Residue is removed with a product suited to the surface rather than scraped hard.
Can you match the sealant colour?
We’ll suggest a colour to suit the surroundings, from white and clear to greys and other shades. The choice depends on the product the joint needs.
Where do you work from?
We work from Crawley. We cover Hemel Hempstead and the rest of Hertfordshire.
Quotes for remedial sealant in Hemel Hempstead
Call for a quick quote. What matters most is:
- Which sealant suits the joint
- Any working-time requirements on site
- Access and height
- The old material and how stubborn it is
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 we need extra access for height. Your quote takes all of that into account.
Helping us quote
When you call or email, these details help:
- Photos by email, if that’s easy
- Roughly how big the job is
- The type of property
- If someone has resealed it before
Want a quote for remedial sealant? Please call 0345 464 0079 or drop us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
What we do, step by step
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. All told, the work takes a few hours, depending on how many layers have to come out. For homes and businesses in busier parts of Hemel Hempstead, parking needs a little planning. For flats, mention stairs, lifts and shared entrances as well.
- We start by checking the joint for movement, leaks and the reason it failed.
- All the old sealant comes out, including any layers underneath.
- Next, any mould is treated and the joint dried.
- We use the right backing and sealant for any joint that moves.
- The new joint is tooled neatly and we explain anything else we found.
Preparing for the visit
- On commercial sites, let us know about site rules
- Keep pets and children clear of the area while we work
- Tell us if parking is tricky
Getting a quote
If you are in Hemel Hempstead and need remedial sealant, phone 0345 464 0079 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Advice
Leave it or put it right?
Remedial work takes longer than a straight reseal, but rarely a lot: the work takes a few hours for most joints, depending on how much old sealant has to come out. Compared with chasing the same leak every few months, it’s time well spent. Busy buildings in Hemel Hempstead, from hotels to offices, can’t afford rooms out of use for leaks or mould, so it pays to replace failing joints before they get that far.
Leaving a failed joint generally makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, phone 0345 464 0079 or send us an email for an honest opinion and a quote.
Why us?
- A choice of colours where the product allows
- Full insurance on every job
- Sealant colour chosen to suit
- Trusted Arbo and Everbuild sealants
Take a look at what affects the cost or what customers say.
When to call us in Hemel Hempstead
Even good sealant ages. Over the years it shrinks, hardens and gets colonised by mould, faster where ventilation is poor. Then the only fix is removal and a new bead.
Common reasons people contact us are:
- Worktop sealant that has shrunk and split
- Sealant that came away because the surface wasn’t prepared
- Floor or wall movement joints that have failed
- Over-sealed joints coming away
If you live in an older home near St Barnabas, bathrooms in older houses have often been refitted more than once, with sealant laid over sealant.
What to look for in a quote
- What happens if they find a problem under the old sealant
- When the joint can take water or movement
- Whether they’re fully insured
- The length of the guarantee