Reading · England
Remedial sealant & repairs in Sonning, Reading
We cover Sonning for removing failed, mouldy or leaking sealant and putting it right. Old sealant removed completely, joints prepared properly.
- Dark patches showing through the sealant
- Thick, messy sealant smeared over tiles
- Products that weren’t meant for the joint
Different surfaces, different methods
Leaking trays & enclosures
Where the joints are the problem, every bead is stripped and resealed with anti-fungal sanitary silicone, including the screen profile and tray edges.
Windows & doors
Wrong-coloured or messy mastic can be replaced for appearance too, matched to the frame colour.
Remedial sealant in Sonning
A joint that keeps failing normally has a reason. Movement, the wrong product or a leak from somewhere else will beat any new bead. Finding that cause comes before any new sealant. We work on failed movement joints, mouldy bath & shower sealant and botched or over-sealed joints, and the jobs we see most are smears and lumps from a botched reseal and movement joints that have split or pulled away.
Around Sonning, it’s houses and cottages rather than flats, some with bathrooms tucked into older rooms or extensions. The work is the same as anywhere: everything old comes out before the new sealant or grout goes in.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Where
- Sonning (RG4)
- Wider area
- Reading
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
How we quote for remedial sealant
The price is agreed before any work begins. It takes into account:
- The size of the job
- How much old sealant there is and how hard it is to remove
- The product the joint needs
- Access and height
Rather than a set price list, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
What to tell us for a quote
When you call or email, it’s useful to know:
- How we’d reach the joints
- The rough size of the job
- Any previous sealing or DIY work
- What’s wrong with the joints now
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. Photos by email help us understand the job, and we will come back to you with a quote.
What we are called out for in Sonning
Water from somewhere else can ruin a good seal. A leaking valve, a failed waste or cracked grout feeds water behind the bead, and the sealant lifts or goes mouldy from underneath.
These are the problems we are asked about most:
- Repeat leaks from the same joint
- Torn expansion joints
- Thick, messy sealant smeared over tiles
- Worktop sealant that has shrunk and split
Letting a property close to Twyford station? Then botched sealant from a previous quick fix is easier to strip out between tenants.
Before booking anyone
- What preparation is included
- What happens if they find a problem under the old sealant
- How the colour is chosen
- What the quote includes, VAT included or not
DIY sealant or a professional job?
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, and the work is guaranteed for a year.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Towns and villages near Sonning
More services for Sonning
What remedial sealant looks like in Sonning
Hard water is the norm across most of the South East, so limescale builds up on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in. There are hotels and other places to stay in and around Sonning. As well as homes, we work in hotel bathrooms, where resealing and regrouting can be done room by room.
Homes close to St Andrew's Church include some older properties, and timber floors under older bathrooms flex, so joints need a sealant that moves with them. Schools such as Sonning Church of England Primary School are buildings too, and 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.
Sonning is about 1 mile north-west of Woodley, in Reading. Jobs in Sonning get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 34 places in Reading are on our list, large and small.
Jobs for remedial sealant in RG4 works the same way as everywhere else we cover. We cover properties on High Street, Parkway Drive and Pound Lane and the roads around them. Main roads around Sonning include the B478 and B4446. Other places close to Sonning include Play Hatch (1 mile north-west), Dunsden Green (2 miles north-west), Newtown (2 miles south-west), Caversham Park Village (2 miles north-west) and Littlestead Green (2 miles north-west). Within a short drive, we also cover Caversham (3 miles west), Norcot (5 miles west), West Reading (4 miles west), Tilehurst Within (5 miles west), Shinfield (5 miles south-west) and Arborfield Garrison (6 miles south).
What’s near Sonning
We work in homes and buildings around Ali's Pond Local Nature Reserve, Bull Inn and Waingels College. Sonning’s nearest station is Twyford station, roughly 1.9 miles east of the centre. Nearby you’ll also find Berkshire Medical Heritage Centre Museum (2.5 miles south-west) and Royal Berkshire Hospital (2.6 miles south-west). Not far away are Sonning Hill and South Lake.
Your questions about remedial sealant in Sonning
Do you work for hotels and guest houses in Sonning?
Yes, we work for hotels as well as homes and businesses. A room-by-room programme keeps most rooms in use while the work goes on.
Do you work for landlords with property near Twyford station?
Yes, we work for letting agents and landlords. You can ring 0345 464 0079 or drop us an email with the address and a few details, and we will give you a fixed price before we start.
Someone resealed my shower and it’s leaking again. Can you help?
Yes. There’s normally a reason: sealant over sealant, movement or another leak, and we deal with the cause first.
Do I have to be there?
It depends on the job. For work indoors, someone needs to let us in.
Can you reseal a split movement joint?
Yes. The depth is set with backing so the sealant only bonds to the two sides, which lets it stretch.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status and we are fully insured too.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected, and the area is left clean when we finish.
Are you insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Why act early in Sonning
Hidden water does the most damage: wet floors, stained ceilings and swollen worktops. Dealing with the joint now is a small job by comparison. Older cottages and farmhouses around Sonning can have timber floors and frames, and water through a failed joint can rot timber if it’s left.
What you pay reflects the work, not guesswork. That’s why we ask a few questions first.
Why choose Mr Mastic in Sonning
- We are fully insured
- A choice of colours where the product allows
- Colour picked to suit the job
- You choose the colour before work begins
Take a look at our cost guide and our reviews.
Looking after it afterwards
No joint lasts for ever, but care makes a real difference. A few tips:
- Check ceilings under showers for marks
- Report a tray that rocks or a worktop that lifts
- Act on a lifting corner straight away
- Do not add new sealant on top of old
Give the new sealant its full cure time: generally around 24 hours, or as long as we advise.
Mould trapped under over-sealed joints spreads unseen. When it finally shows, the whole bead needs to come out.
What we do, step by step
Once we are on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours for most joints, depending on how much old sealant has to come out. For a village or hamlet like Sonning, the journey is planned in advance: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We look at how the sealant has failed and check for movement or a leak path.
- 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.
- Finally we finish the joint and talk you through what we found.
How to prepare
- Mention any sign-in or site rules at work premises
- Plan for the work area to be out of bounds to pets and children
- Tell us about any previous sealing or DIY attempts
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 add photos by email if you can.