Hertfordshire · England
Remedial sealant & repairs in Monkswood, Hertfordshire
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in Monkswood and across Hertfordshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Caulk or the wrong sealant used in a wet area
- Dark patches showing through the sealant
- Leaks that keep coming back after resealing
Remedial sealant in Monkswood, done properly
Decorators’ caulk in a shower, bathroom silicone on a window, a rigid filler in a movement joint will not last, however tidy it looks. Out it comes, and in goes a sealant suited to the job. We work on mouldy bath & shower sealant, botched or over-sealed joints and failed movement joints, and people most often call us about dark patches showing through the sealant and decorators’ caulk around a bath or shower.
Somewhere as small as Monkswood, homes tend to be cottages, farmhouses or converted buildings, with some newer houses too. Movement in older walls and floors tends to show first as cracked grout or split sealant.
Our work is backed for twelve months.
- Where
- Monkswood (AL8, AL6, AL7)
- Region
- Hertfordshire
- Cover
- 12 months on all our work
- Quote
- A clear price before work begins
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
We work for landlords and agents as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
How the job changes by surface
Mouldy bath & shower sealant
Black mould inside the bead won’t scrub out. The sealant is cut out completely, the joint treated with a mould remover and dried before anti-fungal sanitary silicone goes in.
Leaking trays & enclosures
When failed joints are the cause, they’re all cut out and renewed, including the screen profile and tray edges.
Questions from Monkswood
Do you cover Monkswood for remedial sealant?
Yes, Monkswood is within the area we cover. Our work covers London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job.
Do you cover smaller places like Monkswood?
Yes. Monkswood is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Can I choose the sealant colour?
Generally, yes. White, clear and grey are common, and other colours are available, and we’ll agree it with you first.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
I rent my home. Can I book you?
Of course. Check with your landlord; we can send the quote to them too.
How long will it take to strip and reseal the joint?
A little longer than a standard reseal. Most jobs take a few hours, and we confirm the time with your quote.
What if the leak isn’t the sealant?
In that case, we tell you what we’ve found. A plumber or fitter may be needed before any new sealant goes on.
Places near Monkswood
What else we do in Monkswood
The process
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a typical bath or shower, longer where several layers have been applied. For a village or hamlet like Monkswood, the journey is planned in advance: 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.
- First we find out how and where the joint has failed.
- Every layer of old sealant is cut and cleaned out.
- Next, any mould is treated and the joint dried.
- We use the right backing and sealant for any joint that moves.
- Finally we finish the joint and talk you through what we found.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Mention any tricky access
- Keep pets and children clear of the area while we work
How to get a quote
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll talk you through the work.
Related advice
How to look after the new joints
Good habits help new joints last longer. Our tips:
- Ask why a joint failed before redoing it
- Report a tray that rocks or a worktop that lifts
- Do not add new sealant on top of old
- Look for stains below bathrooms now and then
Go easy on the new sealant: no scraping, scouring pads or harsh chemicals.
Signs to act on: sealant lifting at the ends, a second bead visible on top of the first, black mould under the silicone, or stains below a bathroom. Each one is worth getting looked at.
Monkswood homes and their sealant
Most of the South East has hard water, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Managing a site like Homerswood Primary and Nursery School? Then its toilets, changing areas and kitchens need their sealant renewed like any other building’s. For landlords with property near Welwyn North station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak. In the older streets around The Parish Church of St John, walls and floors in older homes can move, and sealant and grout show it first.
Monkswood is about 2 miles north of Welwyn Garden City, in Hertfordshire. Wherever you are in the AL8 postcode area, we cover remedial sealant for homes and businesses. Monkswood is one of 381 towns and villages in Hertfordshire where we work. You can also see our page for London, roughly 23 miles from Monkswood.
Every address in AL8, AL6 and AL7 is within our area for remedial sealant. Local streets include Digswell Park Road, Ingles and Uplands. Nearby, we also carry out remedial sealant in Welwyn (1 mile north-west), Ayot Green (1 mile south-west), Ayot St Peter (2 miles west), Pottersheath (2 miles north) and Rableyheath (2 miles north). We also work in nearby towns such as Watford (14 miles south-west), Hemel Hempstead (12 miles south-west), Stevenage (6 miles north), St Albans (7 miles south-west), Harpenden (6 miles west) and Hitchin (9 miles north).
Local landmarks in Monkswood
Around Monkswood, our work takes us to homes and buildings near Monk's Walk School, Danesbury Park and Hedgehog pub and the streets around them. The closest station to Monkswood is Welwyn North station, roughly 0.6 miles north-east of the centre. Other landmarks nearby include Queen Elizabeth II Hospital (2.7 miles south) and Howard Centre (1.3 miles south). Not far away are Tewin Orchard and Hopkyns Wood.
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
What we can’t put right
Before you book, it’s worth knowing the limits too:
- Failed tanking or loose tiles behind the sealant
- 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 call 0345 464 0079 or send us an email and we will tell you honestly.
Joints and surfaces we work on
- Shrunken worktop sealant
- Leaking tray & enclosure joints
- Expansion joints
- Mouldy bath & shower sealant
- Failed movement joints
- Botched or over-sealed joints
Quotes for remedial sealant in Monkswood
There’s no set price list, because jobs vary so much. What we look at:
- Any mould that needs treating
- The number of rooms or windows
- Any working-time requirements on site
- Whether old sealant or filler has to be cut out
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You’ll know the price before we begin.
Asking for a quote
To make quoting easier, let us know:
- The address or postcode of the job
- What’s wrong with the joints now
- If someone has resealed it before
- Roughly how big the job is
We don’t publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, ring 0345 464 0079 or email us.