Hertfordshire · England
Northaw Valley Remedial Sealant
Remedial sealant across Northaw Valley and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Smears and lumps from a botched reseal
- Torn expansion joints
- Gaps opening along the back of the worktop
When it isn’t the sealant
In fairness, there are a few things sealant will not fix:
- A bath, tray or worktop that moves until it’s properly fixed
- A cracked shower tray or bath (that needs repair or replacing)
- A leaking trap, valve or supply pipe
If you are not sure, just phone 0345 464 0079 or send us an email and we’ll give you a straight answer.
What we seal
- Shrunken worktop sealant
- Expansion joints
- Failed movement joints
- Mouldy bath & shower sealant
- Leaking tray & enclosure joints
- Botched or over-sealed joints
Remedial sealant in Northaw Valley, done properly
Removing failed sealant is the hardest part of the job. Every layer is cut out, the residue cleaned off and the joint degreased, without scratching tiles, trays or frames. New sealant only bonds to a clean, dry joint. Typical jobs include a second bead peeling off the first and caulk or the wrong sealant used in a wet area, on mouldy bath & shower sealant, expansion joints and shrunken worktop sealant.
Around Northaw Valley, it’s houses and cottages rather than flats. The work is the same as anywhere: everything old comes out before the new sealant or grout goes in.
We guarantee the work for a year. If something is not right with it in that time, tell us and we will put it right.
- Place
- Northaw Valley (EN6)
- Region
- Hertfordshire
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Places near Northaw Valley
More services for Northaw Valley
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.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
The process
We bring everything the job needs with us. After a quick look at the joints together, we protect the area and start. It normally takes a few hours for a typical bath or shower, longer where several layers have been applied. Somewhere as small as Northaw Valley, access is often the only tricky part. For outside work, also let us know about exposed walls and any outbuildings involved.
- We protect the surfaces around the joint.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- New sealant goes in once the joint is dry, and is tooled smooth.
- We give you the cure time and explain what caused the failure.
Getting ready for the visit
- Clear items away from the joints we are working on
- For indoor joints, keep the area dry beforehand if you can
- Tell us if parking is tricky
How to get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Read more
What happens if it’s left?
DIY removal often leaves scratches and a film of residue, and the residue left behind stops the next bead bonding. Careful stripping is where most of our time goes. Older cottages and farmhouses around Northaw Valley can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Why us?
- Old sealant always removed completely
- White, clear, grey or coloured to suit, where the product allows
- One-year guarantee on every job
- Sealant colour chosen to suit
Read what affects the cost or customer reviews.
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
We also work for property managers and facilities teams in Northaw Valley and across Hertfordshire. We can quote a run of properties together.
FAQs for Northaw Valley
I let a flat near Crews Hill station. Can you help?
Yes, we work for landlords and letting agents. 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 cover smaller places like Northaw Valley?
Yes, Northaw Valley is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Is it worth trying it myself?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
Can you take off two layers of silicone?
Yes. Both layers come out; over-sealing fails because silicone won’t bond to silicone.
What information do you need?
The location, the problem and the rough size of the job. If you can, email a few photos.
Can you quote for more than one area?
Yes. Just list everything you need and you’ll get one quote.
Do you guarantee remedial jobs?
Yes. Our 12-month guarantee covers the work, and we are ARBOMaster approved.
Where do you work from?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Keeping the joints in good condition
So the new joints stay in good condition:
- Don’t wait for a small gap to become a leak
- Never fill a movement joint with mortar or grout
- Find out why the sealant failed first
- Keep bleach and abrasives off the bead
Leave the new joint to cure fully before it gets wet or moves: follow the cure time we give you.
A split movement joint lets rain into walls and floors, and left long enough, the edges of the joint can crumble. A joint with sound edges is far easier to reseal.
What affects the quote in Northaw Valley
Jobs vary more than people expect. The main factors:
- The size of the job
- The type of sealant required
- How many areas need sealing
- The old material and how stubborn it is
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please ring 0345 464 0079 or drop us an email and we’ll talk you through it.
Helping us quote
To make quoting easier, please include:
- A few photos by email, if you can
- The rough size of the job
- Whether it’s a home or a business
- Any previous sealing or DIY work
Need a quote? Please call 0345 464 0079 or send us an email with a few details. We’ll explain what we’d do and give you a clear quote before we start.
Bathrooms and kitchens in Northaw Valley
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings.
If you live in an older home near Parish Church of St Thomas A Becket, older homes can move a little, which is hard on rigid grout and tired sealant. Rented homes near Crews Hill station change hands often, and a joint that keeps failing is best fixed properly while the property is empty. For site and facilities teams at buildings such as St. John's Senior School, we reseal washrooms and kitchens in schools and businesses as well as homes.
Northaw Valley is about 2 miles east of Potters Bar, in Hertfordshire. Wherever you are in the EN6 postcode area, we can carry out remedial sealant at your property. We cover 381 towns and villages across Hertfordshire. For nearby work, see our London page (14 miles or so).
Postcode districts we cover here for remedial sealant: EN6. If you’re just outside Northaw Valley, we cover Botany Bay (1 mile south-east), Potters Bar (2 miles west), Hadley Wood (3 miles south-west), Bentley Heath (3 miles west) and Cockfosters (3 miles south). We also work in nearby towns such as Watford (11 miles west), Hemel Hempstead (14 miles west), Stevenage (15 miles north), St Albans (9 miles north-west), Welwyn Garden City (8 miles north) and Harpenden (12 miles north-west).
Near you in Northaw Valley
We work in homes and buildings around Two Brewers Public House, Northaw Church of England Primary School and Mount Grace School. Northaw Valley’s nearest station is Crews Hill station, roughly 1.4 miles south-east of the centre. Other landmarks nearby include Spires Shopping Centre (3.8 miles south-west) and Chase Farm Hospital (2.3 miles south-east). Open spaces near Northaw Valley include Bowyer's Water and Fir and Pond Woods.