Hertfordshire · England
Remedial Sealant in The Folly
Remedial sealant for The Folly and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Mould trapped under a layer of silicone
- Movement joints that have split or pulled away
- Beads that never stuck properly
What the job involves on each surface
Movement & expansion joints
A sealant stuck to the back of the joint can’t stretch. Backing stops that, so the sealant grips the two sides only.
Windows & doors
Failed frame mastic is often hard, cracked and in several layers. We remove it all and clean back to sound surfaces before backing and resealing.
Remedial sealant in The Folly
A movement joint stops working when its sealant splits or sets hard. We cut out the failed sealant and set the depth with backing, then a flexible sealant matched to the movement goes in. Typical jobs include sealant peeling off a dusty or damp surface and caulk or the wrong sealant used in a wet area, on shrunken worktop sealant, mouldy bath & shower sealant and failed movement joints.
Homes around The Folly are mostly houses and cottages rather than flats. Sealant and grout wear out here just as they do anywhere: old material cut out, joints cleaned and a fresh finish laid.
Whatever the size of the job, it’s backed by our one-year guarantee in The Folly and across Hertfordshire.
- Where
- The Folly (AL4)
- Region
- Hertfordshire
- Cover
- One year on every job
- Quote
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Places near The Folly
Other services in The Folly
What we cannot put right
Some problems need a builder, plumber or other trade rather than us:
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- Leaks from a shower valve, waste or pipework (a plumber’s job)
- A tray or bath that’s cracked
If you’re not sure, just phone 0345 464 0079 or drop us an email and we’ll give you a straight answer before booking.
Where we work in The Folly
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Failed movement joints
- Expansion joints
- Shrunken worktop sealant
Common problems we fix in The Folly
Products get mixed up: caulk where it gets wet, rigid sealant where things move, or an acetoxy silicone on a surface it can mark. Each fails in its own way.
Look out for these signs:
- Floor or wall movement joints that have failed
- Over-sealed joints coming away
- Beads that never stuck properly
- Black mould underneath the bead
For landlords with property near Harpenden station, failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Comparing quotes
- The length of the guarantee
- What the quote includes, VAT included or not
- How long to leave it before use
- Whether all the old sealant comes out first
Landlord and commercial work in The Folly
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll quote.
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
Why it’s worth doing now in The Folly
A failed seal rarely means a new bathroom. If the bath, tray and tiles are sound, remedial resealing normally puts it right. Where something else has failed, you’ll hear it from us. Where a wall is exposed, as many are in small places like The Folly, wind-driven rain gets into any failed joint, and older walls, once damp, take a long time to dry.
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all make a difference.
Why choose Mr Mastic in The Folly
- 180+ five-star Google reviews
- 20+ years of sealant experience
- A 12-month guarantee on all work
- Colour picked to suit the job
Take a look at our cost guide or what customers say.
The process
Before we leave, we go over the finished joints with you. The work normally takes a few hours for most joints, depending on how much old sealant has to come out, depending on how much there is to do. For a village or hamlet like The Folly, the journey is planned in advance: let us know about lanes, gates and parking. 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.
- We strip the joint completely, removing any layers below.
- We clean the joint, treat any mould and let it dry.
- Moving joints get backing and a flexible sealant to suit.
- We tool the joint and tell you about anything else that needs attention.
Getting ready for the visit
- Move anything stored near the joints
- Tell us about any previous sealing or DIY attempts
- Mention any parking rules near the property
How to get a quote
For a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. You will have a clear quote before work begins.
Related advice
Remedial sealant around The Folly
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings.
Homes close to St Helen's Church include some older properties, and older homes can move a little, which is hard on rigid grout and tired sealant. For site and facilities teams at buildings such as St Helen's Church of England Primary School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
The Folly is about 2 miles east of Harpenden, in Hertfordshire. Wherever you are in the AL4 postcode area, we can carry out remedial sealant at your property. The Folly is one of 381 towns and villages in Hertfordshire where we work. London is on our list too, around 24 miles away.
Our applicators cover all of AL4 for remedial sealant. Whether your property is on Folly Fields and Lower Luton Road or anywhere close by, our applicators can take on the job. If you are just outside The Folly, we cover Lea Valley (1 mile west), Amwell (1 mile south), Mackerye End (1 mile north-west), Blackmore End (1 mile north) and Batford (1 mile west). Within a short drive, we also cover Watford (11 miles south), Hemel Hempstead (8 miles south-west), Stevenage (8 miles north-east), St Albans (5 miles south), Welwyn Garden City (5 miles east) and Hitchin (9 miles north).
Near you in The Folly
Typical jobs here are in homes near Sir John Lawes School and The Cherry Trees pub and the streets around them. The closest station to The Folly is Harpenden station, about 2 miles west. A little further out are St Albans City Hospital (4.2 miles south) and Harpenden Museum (2.2 miles west). Green spaces nearby include Wheathampstead Local Nature Reserve.
Your questions about remedial sealant in The Folly
Is The Folly in your area for remedial sealant?
Yes, The Folly 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 work for landlords with property near Harpenden station?
Yes, rental work is part of what we do. Just call 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we’re fully insured.
Can you remove old sealant without damaging the bath?
Yes. We avoid heavy scraping and use the right cleaner for each surface.
What happens if the problem is the tray or the plumbing?
Then we explain what we have found. A plumber or fitter may be needed before any new sealant goes on.
Can I choose the sealant colour?
In most cases you can choose. We’ll explain which colours are available.
Can you remove sealant that’s been put over old sealant?
Yes. Both layers come out; over-sealing fails because silicone will not bond to silicone.
Does remedial work come with a guarantee?
Yes, for 12 months. If we have pointed out another problem, getting it fixed helps the new joint last.
DIY sealant or a professional job?
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.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.