South East England and London

Remedial Sealant in Hertfordshire

Remedial sealant in all 381 towns and villages of Hertfordshire, with every joint properly prepared, quoted clearly before any work starts and a one-year guarantee.

Book remedial sealant in Hertfordshire

Call 0345 464 0079

Get a quick quote

Remedial sealant across Hertfordshire

Removing failed, mouldy or leaking sealant and putting it right. Pick your town below to see the details for your area, or call or email us for a quick quote.

Largest places

Remedial sealant across Hertfordshire: what to expect

A movement joint stops working when its sealant splits or sets hard. We cut out the failed sealant and set the depth with backing, before resealing with a flexible product suited to the movement. Typical jobs include torn expansion joints and over-sealed joints coming away, across shrunken worktop sealant, expansion joints and leaking tray & enclosure joints.

At the end, we look at the finished work together and tell you how long to leave it. 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.

Surrounding tiles, trays and frames are protected first.
The botched or failed sealant is cut away completely.
We clean and degrease the joint and look for signs of movement or water.
New sealant goes in once the joint is dry, and is tooled smooth.
You get the cure time and our view on why the joint failed.

Pricing in Hertfordshire

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’ll go through it with you.

What you get with us

12-month guarantee on every job
Rated 4.9 stars on Google
Fully insured
Approved under the ARBOMaster scheme

Getting a quote

We don’t publish a price list. Instead, your job gets its own clear quote. To arrange one, phone 0345 464 0079 or email us.

Local landmarks in Watford

In Watford, that means homes and buildings near The Estcourt Arms, Watford St John's Church of England Primary School and Church of St Andrew. You will also find Cassiobury Park (0.8 miles west) and The Watford UTC (0.5 miles east). Watford has its own railway station: Watford Junction station. Well-known places in the area include Hilfield Castle (2.8 miles east) and Charter Place (0.5 miles south). Open spaces near Watford include Harrow Weald Common.

Where we work in Hertfordshire

In Hertfordshire, remedial sealant takes in flats, houses, rentals and businesses, from Watford, Hemel Hempstead and Stevenage to the quieter places in between. The method is the same everywhere: old material cut out, joints cleaned and dried, and a fresh finish laid.

Hard water across most of the South East leaves limescale on sealant, grout and fittings. For any job in Hertfordshire, joints are cleaned back properly before anything new goes in.

Watford: Schools such as Watford St John's Church of England Primary School are buildings too, and its toilets, changing areas and kitchens need their sealant renewed like any other building’s. If you live in an older home near Church of St Andrew, walls and floors in older homes can move, and sealant and grout show it first.

How the job changes by surface

Windows & doors

Smeared or badly matched mastic can be cut out and redone neatly, in a colour that suits the frame.

Movement & expansion joints

Movement joints in floors, walls and façades need a flexible sealant set to the right depth. We remove the failed sealant, fit backing and reseal with a low-modulus product.

Can I do it myself?

The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.

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 does not work out, we can still put it right.

Looking after it afterwards

To keep the joints looking good and working properly:

Do not add new sealant on top of old
Check trays and worktops don’t move
Keep movement joints clear of mortar and paint
Use a soft cloth, not a scourer, on silicone

Ventilation keeps mould away from the new bead: use the extractor or open a window after showering.

Movement joints that have split let water into the structure, and left long enough, the edges of the joint can crumble. A joint with sound edges is far easier to reseal.

Why it fails

Some joints fail because water is reaching them from behind. A leaking valve, a failed waste or cracked grout feeds water behind the bead, and the sealant lifts or goes mouldy from underneath.

Signs it’s time to call us include:

Sealant applied over old sealant that has lifted
Leaks that keep coming back after resealing
Beads that never stuck properly
Decorators’ caulk around a bath or shower

Landlord and commercial work in Hertfordshire

A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.

In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. Hotel work is part of what we do, alongside homes and businesses.

Hertfordshire questions

Can failed expansion joints be resealed?

Yes. Failed movement joints are cut out and resealed with backing and a flexible sealant suited to the movement.

Is remedial work guaranteed?

Yes. Our one-year guarantee covers the work, and we’re ARBOMaster approved.

How long does remedial resealing take?

A little longer than a standard reseal. For most joints, it’s a few hours, and we confirm the time with your quote.

Should I try DIY first?

Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.

When is the sealant fully cured?

Different products cure at different speeds, so please follow the time we give you when we finish.

Do you take out the old sealant first?

Yes. All of the old material is cut out and the joint cleaned before applying anything new.

How much does remedial sealant cost in Hertfordshire?

The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.