Hampshire · England
Remedial sealant & repairs in Charlwood, Hampshire
Removing failed, mouldy or leaking sealant and putting it right for homes and businesses in Charlwood and across Hampshire. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Black mould underneath the bead
- Smears and lumps from a botched reseal
- Repeat leaks from the same joint
About our remedial sealant in Charlwood
Removing failed sealant is the hardest part of the job. Every layer is cut out, the residue cleaned off and the joint degreased, taking care not to scratch the surfaces around it. New sealant only bonds to a clean, dry joint. Common call-outs are for floor or wall movement joints that have failed and decorators’ caulk around a bath or shower, across botched or over-sealed joints, failed movement joints and mouldy bath & shower sealant.
Around Charlwood, it’s houses and cottages rather than flats. The work is the same as anywhere: old material cut out, joints cleaned and a fresh finish laid.
There’s a 12-month guarantee on every job, large or small.
- Location
- Charlwood (SO24)
- Region
- Hampshire
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
How it works
A visit follows a simple pattern: we look at the joints together, mask and protect the surrounding surfaces, do the work and clear up. Most jobs take a few hours, depending on how many layers have to come out. In a small place like Charlwood, access is normally the main thing to plan. For outside work, also let us know about exposed walls and any outbuildings involved.
- First we find out how and where the joint has failed.
- All the old sealant comes out, including any layers underneath.
- Next, any mould is treated and the joint dried.
- Moving joints get backing and a flexible sealant to suit.
- We tool the joint and tell you about anything else that needs attention.
Preparing for the visit
- Move anything stored near the joints
- Where the joints are inside, avoid wetting them before we arrive
- Mention any sign-in or site rules at work premises
Get a quote
If you’re in Charlwood and need remedial sealant, phone 0345 464 0079 or email us. Tell us what the problem is and where, and you’ll get a clear quote before any work starts.
Advice
When something else is needed
We’d rather tell you now than do work that will not last, so these are the limits:
- A tray or worktop that needs refixing first
- Plumbing leaks behind walls or under trays
- Tiles that have come away from the wall
If you’re not sure, just ring 0345 464 0079 or send us an email and we’ll give you a straight answer.
Surfaces we seal
- Failed movement joints
- Shrunken worktop sealant
- Botched or over-sealed joints
- Leaking tray & enclosure joints
- Mouldy bath & shower sealant
- Expansion joints
How to look after the new joints
Looking after new joints is easy:
- Never seal over old silicone
- Keep the room well ventilated
- Look for stains below bathrooms now and then
- Find out why the sealant failed first
Clean gently: no scraping, scouring pads or harsh chemicals.
Signs to act on: sealant lifting at the ends, a second bead visible on top of the first, black mould under the silicone, or stains below a bathroom. Any of them means it’s time for remedial work.
Towns and villages near Charlwood
More services for Charlwood
When to call us in Charlwood
Joints that move need sealant that can stretch. Flexing baths, rocking trays and building movement joints will split a rigid or thin bead.
The problems people normally mention when they call are:
- Sealant applied over old sealant that has lifted
- Sealant peeling off a dusty or damp surface
- Wide, uneven beads that look worse than the old ones
- Torn expansion joints
In the older streets around Monkwood Mission Church, older homes can move a little, which is hard on rigid grout and tired sealant.
What to look for in a quote
- When the joint can take water or movement
- Whether they’re fully insured
- How the joint is cleaned and prepared
- What happens if they find a problem under the old sealant
DIY versus a professional finish
If you are set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
What affects the quote in Charlwood
The price is agreed before any work begins. It’s based on:
- Mould in or behind the old joints
- How many areas need sealing
- The type of sealant required
- The number and length of the joints
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- Pictures of the joints, sent by email
- The problem you’ve noticed
- Where the job is, and your postcode
Getting a quote is simple: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Charlwood: your questions answered
Do you cover Charlwood for remedial sealant?
Yes, Charlwood is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear quote.
What guarantee comes with remedial sealant in Charlwood?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Will there be a smell?
Sometimes, a little. Any smell clears as the sealant cures.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Where is Mr Mastic based?
Our base is Crawley. Our area covers South East England, London and Scotland.
Do you work for landlords and businesses?
Yes, regularly. Several properties can be quoted together.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
How long should I leave it?
That depends on the sealant used, so follow the cure time we give you.
Remedial sealant around Charlwood
Most of the South East has hard water, so limescale builds up on sealant, grout and fittings.
In and around Charlwood, as anywhere, good remedial sealant starts with a clean, dry, properly prepared joint.
Charlwood is about 6 miles south-west of Alton, in Hampshire. Whether you’re in the middle of Charlwood or further out, remedial sealant is available for homes and businesses alike, from flats and houses to offices and hotels. Charlwood is one of 683 places in Hampshire we cover. For nearby work, see our Southampton page (19 miles or so).
Every address in SO24 is covered for remedial sealant. If you are just outside Charlwood, we cover Monkwood (1 mile south-west), Kitwood (1 mile north-west), Gilbert Street (1 mile north-west), Ropley (2 miles west) and West Tisted (2 miles south-west). Within a short drive, we also cover Basingstoke (13 miles north), Winchester (12 miles west), Havant (15 miles south), Eastleigh (15 miles south-west), Horndean (12 miles south) and Alton (6 miles north-east).
What’s near Charlwood
A little further out are Alton Community Hospital (4.7 miles north-east). The countryside around Charlwood includes Red Hill and Shutts Copse.
Different surfaces, different methods
Worktops & kitchens
If a worktop moves when you lean on it, the sealant will keep splitting. It needs fixing down first, which we’ll point out.
Over-sealed & botched joints
Every layer has to come out, and silicone residue is cleaned off the tiles too. Only a clean joint will take a new bead.