Hertfordshire · England
Remedial Sealant in High Wych
Removing failed, mouldy or leaking sealant and putting it right in High Wych, with a 12-month guarantee on every job. Call for a quick quote.
- Sealant applied over old sealant that has lifted
- Torn expansion joints
- Sealant that came away because the surface wasn’t prepared
Remedial sealant in High Wych, done properly
Getting old sealant out properly is slow, careful work. Every layer is cut out, the residue cleaned off and the joint degreased, taking care not to scratch the surfaces around it. Only then can new sealant bond. If you are dealing with beads that never stuck properly and gaps opening along the back of the worktop, we can help, whatever the surface.
In a village or hamlet like High Wych, homes are often older cottages and farmhouses alongside a few newer houses. Older walls and timber floors can move a little, and cracked grout and split sealant are often the first signs.
The work is covered for a year after we finish. If anything isn’t right with it, call 0345 464 0079 or drop us an email.
- Place
- High Wych (CM21)
- Wider area
- Hertfordshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Have loose fittings fixed before resealing
- Look for stains below bathrooms now and then
- Run the fan after every shower
- Don’t point over movement joints
Clean gently: a mild cleaner and a soft cloth, with no blades or scourers.
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.
High Wych questions
Do you work for landlords with property near Harlow Mill station?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or send us an email with the details for a clear quote.
Is High Wych within the area you cover?
Yes, High Wych is covered. Our work covers London and the South East, and smaller places are part of that. Longer journeys are simply planned in advance.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Can you strip sealant from an acrylic tray safely?
Yes. Residue is removed with a product suited to the surface rather than scraped hard.
Can you take off two layers of silicone?
Yes. Stripping layered sealant takes longer than a normal reseal, but it’s what makes the new bead last.
What do you put in the joint?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
How long does the work take?
The number of joints and layers decides it. You will have a timescale before any work begins.
Are you insured?
Yes. We are fully insured.
Quotes for remedial sealant in High Wych
You will get a clear quote before work begins. It’s based on:
- The product the joint needs
- Any mould that needs treating
- The number and length of the joints
- Working hours on commercial sites
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
What to tell us for a quote
When you call or email, these details help:
- Pictures of the joints, sent by email
- Whether it’s a home or a business
- Any access issues, like height or stairs
- The address or postcode of the job
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll explain what’s involved.
What happens on the day
Our applicators work methodically: protect, prepare, seal, tidy. Typically it takes a few hours, depending on how many layers have to come out and we leave things clean and tidy. For a village or hamlet like High Wych, the journey is planned in advance: let us know about lanes, gates and parking. Everything for the job comes with us, so a second trip is avoided where possible.
- We start by checking the joint for movement, leaks and the reason it failed.
- All the old sealant comes out, including any layers underneath.
- The joint is cleaned, treated for mould and left to dry.
- We use the right backing and sealant for any joint that moves.
- We tool the joint and tell you about anything else that needs attention.
Getting ready for the visit
- Tell us about any water getting in
- Keep children and pets away from the work area
- Mention any sign-in or site rules at work premises
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email pictures if that’s easy.
Read more
How the job changes by surface
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.
Worktops & kitchens
Kitchen joints hold grease and residue, so cleaning takes longer than in a bathroom.
Places near High Wych
What else we do in High Wych
What we can’t put right
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- A bath, tray or worktop that moves until it’s properly fixed
- Plumbing leaks behind walls or under trays
- Failed tanking or loose tiles behind the sealant
If in doubt, ring 0345 464 0079 or send us an email and we’ll say what we think.
Joints and surfaces we work on
- Leaking tray & enclosure joints
- Expansion joints
- Mouldy bath & shower sealant
- Botched or over-sealed joints
- Shrunken worktop sealant
- Failed movement joints
DIY versus a professional finish
If you’re set on DIY, put the effort into 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.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Landlords, agents and businesses in High Wych
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Remedial sealant around High Wych
Most of the South East has hard water, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
Letting a property close to Harlow Mill station? Then botched sealant from a previous quick fix is easier to strip out between tenants. For an older house near a landmark such as Parish Church of St James the Great, timber floors under older bathrooms flex, so joints need a sealant that moves with them. For site and facilities teams at buildings such as High Wych Church of England Primary School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
High Wych is about 3 miles north of Harlow, in Hertfordshire. Anywhere in CM21, we can carry out remedial sealant at your property. Our Hertfordshire coverage runs to 381 places, and High Wych is one of them. You can also see our page for Chelmsford, roughly 16 miles from High Wych.
Here we cover the CM21 postcode area for remedial sealant. Local streets include Mansfield, High Wych Lane and Broadfields, and we cover them all. If you are just outside High Wych, we cover Sawbridgeworth (1 mile east), Lower Sheering (2 miles east), Allen's Green (2 miles north), Spellbrook (2 miles north-east) and Sheering (3 miles east). We also work in nearby towns such as Stevenage (15 miles north-west), Bishop's Stortford (4 miles north), Welwyn Garden City (14 miles west), Hoddesdon (7 miles south-west), Cheshunt (10 miles south-west) and Hatfield (15 miles west).
Local landmarks in High Wych
Typical jobs here are in homes near The Half Moon Public House, Leventhorpe and Gibberd Garden. High Wych’s nearest station is Harlow Mill station, about 1.3 miles south of the centre. A little further out are Harlow Mill (1.3 miles south) and Princess Alexandra Hospital (3 miles south-west). Green spaces nearby include Sawbridgeworth Marsh.