Hertfordshire · England
Remedial sealant & repairs in Walkern, Hertfordshire
Remedial sealant across Walkern and nearby, with old sealant always removed completely.
- Torn expansion joints
- Smears and lumps from a botched reseal
- Dark patches showing through the sealant
Remedial sealant in Walkern
A joint that keeps letting you down needs more than another bead. Send pictures when you call 0345 464 0079 or drop us an email. We work on expansion joints, botched or over-sealed joints and leaking tray & enclosure joints, and people most often call us about torn expansion joints and a shower that leaks however often it’s resealed.
Somewhere as small as Walkern, 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.
You’re covered for a year from the day we finish. If anything isn’t right with it, phone 0345 464 0079 or drop us an email.
- Place
- Walkern (SG2)
- Wider area
- Hertfordshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
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.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Walkern questions
Is Walkern within the area you cover?
Yes, Walkern is covered. We work across London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Can you do remedial sealant in Walkern?
Yes, Walkern is within the area we cover. Our work covers London and the South East. You can call 0345 464 0079 or email us and let us know what needs doing, and we will send you a clear quote.
Does remedial work come with a guarantee?
Yes. Every job comes with our one-year guarantee.
Where are you based?
We work from Crawley. Our applicators cover Walkern.
Someone resealed my shower and it’s leaking again. Can you help?
Yes. All the sealant comes out, we find out why it failed, and the joint is resealed properly.
What sealant do you use?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice.
Do you do commercial work?
Yes, regularly. We can plan bigger jobs in stages.
Can I add another job to the visit?
Yes. More than one area can go on one quote.
Honest limits
Sealant is not the answer to every problem, and we’ll tell you before any work starts. It will not solve:
- Old mastic in a building from before 2000 that should be checked for asbestos before it’s disturbed
- Cracks in the fitting rather than the joint
- A tray or worktop that needs refixing first
Not sure which it is? You can ring 0345 464 0079 or drop us an email and we will tell you honestly before booking.
Surfaces we seal
- Shrunken worktop sealant
- Botched or over-sealed joints
- Failed movement joints
- Expansion joints
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
Towns and villages near Walkern
Other services in Walkern
Signs you need remedial sealant in Walkern
One of the commonest remedial jobs is sealant on top of sealant. New silicone can’t stick to the old bead, so the top layer lifts and water and mould collect between the two.
Signs it’s time to call us include:
- Repeat leaks from the same joint
- Kitchen joints letting water behind the worktop
- Floor or wall movement joints that have failed
- Decorators’ caulk around a bath or shower
Rented homes near Stevenage station change hands often, and failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
What to look for in a quote
- How long the guarantee is
- Whether all the old sealant comes out first
- Whether you can choose the colour
- Is VAT in the price?
Walkern homes and their sealant
Most of the South East has hard water, which leaves limescale on sealant, grout and fittings.
For site and facilities teams at buildings such as Walkern Primary School, washroom and kitchen sealant there needs the same care as at home, and schools and businesses are part of our work as well as homes. If you live in an older home near Parish Church of St Mary the Virgin, older homes can move a little, which is hard on rigid grout and tired sealant.
Walkern is about 2 miles east of Stevenage, in Hertfordshire. From the centre of Walkern to the outskirts, we cover remedial sealant for every kind of property, from flats and houses to offices and hotels. We cover 381 towns and villages across Hertfordshire, from the larger towns to small villages. For nearby work, see our London page.
Postcode districts we cover here for remedial sealant: SG2. You’ll find streets such as High Street, Walchra Court and Yew Tree Close. We also cover the places around Walkern: Aston End (2 miles south-west), Chells (2 miles west), St Nicholas (2 miles west), Stevenage (2 miles west) and Pin Green (3 miles west). Larger places within reach include St Albans (14 miles south-west), Bishop's Stortford (13 miles east), Welwyn Garden City (9 miles south), Harpenden (12 miles south-west), Hitchin (6 miles west) and Hoddesdon (12 miles south-east).
Landmarks near Walkern
We work in homes and buildings around The Nobel School and The Robin Hood Public House, among other places. For rail, the closest station is Stevenage station, roughly 3.6 miles west of the centre. Other landmarks nearby include Lister Hospital (3.6 miles west) and Stevenage Museum (3.3 miles west). Green spaces nearby include Pryor's Wood.
Landlord and commercial work in Walkern
For anyone letting property in or around Walkern, several properties can go on one quote. Just tell us the addresses and what each one needs, and photos by email help.
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
What happens on the day
When we get to you, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours, depending on how many layers have to come out. Somewhere as small as Walkern, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We protect the surfaces around the joint.
- 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.
How to prepare
- Tell us about any water getting in
- Tell us about any previous sealing or DIY attempts
- Plan for the work area to be out of bounds to pets and children
Ask for a quote
The more we know about the job, the more useful the quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
Advice
How we quote for remedial sealant
For a quick quote, just ask. What matters most is:
- How many rooms, windows or areas are involved
- How easy the joints are to reach
- The old material and how stubborn it is
- The size of the job
What it costs depends on the amount of work, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Asking for a quote
What to tell us when you ask for a quote:
- What the problem is, such as mould, gaps, leaks or cracking
- Photos by email, if that is easy
- How we’d reach the joints
- Roughly how big the job is
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To get started, call 0345 464 0079 or drop us an email.
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Report a tray that rocks or a worktop that lifts
- Clean sealant with mild products only
- Find out why the sealant failed first
- Do not add new sealant on top of old
Go easy on the new sealant: no scraping, scouring pads or harsh chemicals.
Mould trapped under over-sealed joints spreads unseen. By the time it shows through, the joint is well past saving.