Isle of Wight · England
Dunsbury Commercial Sealant
Problem with your washrooms, bathrooms and kitchens in Dunsbury? We cut out the old, prepare the joints and apply the right sealant.
- Shower leaks reaching the floor below
- Large numbers of bathrooms needing the same work
- Tired sealant ahead of a health and safety audit
Commercial sealant for homes and businesses in Dunsbury
In student and care accommodation, there are often many near-identical bathrooms. We agree a programme and work through them in order, fitting around residents and staff. We work on rental portfolios, student & care accommodation and welfare facilities, and the jobs we see most are mouldy washroom sealant that staff and guests notice and split sealant where wet room floors meet walls.
For holiday lets, converted business premises or a community building near Dunsbury, the washrooms, kitchens and any fire-rated joints need the same care as a big site.
There’s a 12-month guarantee on every job.
- Location
- Dunsbury (PO30)
- Wider area
- Isle of Wight
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- Phone
- 0345 464 0079
- Last updated
- 26 October 2026
Leave it or put it right?
A leaking shower in a hotel room or flat above can damage the ceiling below. Then two rooms are out of action, not one. A reseal now avoids that. In a small place like Dunsbury, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why choose Mr Mastic in Dunsbury
- We’re fully insured
- 20+ years of sealant experience
- Trusted Arbo and Everbuild sealants
- ARBOMaster approved applicator
Take a look at how sealant jobs are priced or our reviews.
Places near Dunsbury
Also in Dunsbury
When it is not the sealant
Sealant is not the answer to every problem, and we will tell you before work begins. Sealant won’t put right:
- Leaking pipework, valves or wastes (a plumber’s job)
- Damaged sanitaryware that needs replacing
- Failed tanking or loose tiles behind the sealant
If you are not sure, just ring 0345 464 0079 or send us an email and we will give you a straight answer.
What we seal
- Welfare facilities
- Office washrooms & kitchens
- Retail & leisure sites
- Hotel bathrooms
- Rental portfolios
- Student & care accommodation
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out 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.
Dunsbury: your questions answered
Is Dunsbury within the area you cover?
Yes, we do. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
What guarantee comes with commercial sealant in Dunsbury?
All our work, in Dunsbury and everywhere else, comes with a 12-month guarantee. We are fully insured, and an ARBOMaster approved applicator.
How soon can a room be used after resealing?
Follow the cure time we give you, which is usually around 24 hours. Planning the order of rooms keeps that downtime manageable.
What does commercial sealant cost?
It depends on the job, so we quote each one individually. For a quick quote, call 0345 464 0079 or email us with a short description of the job.
Can new sealant go over the old?
No. New silicone will not bond to old silicone, and it traps any mould or water underneath. We remove it all first.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Can you work around guests in a hotel?
Yes, in most cases. Each visit covers an agreed batch of rooms, working around check-out and check-in where possible.
Where are you based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
What we do, step by step
Every visit runs the same way: we check the joints, mask and protect the surrounding surfaces, do the work and tidy away. It normally takes a few hours per room, so whole buildings are phased. Somewhere as small as Dunsbury, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We agree a programme with you: which rooms, in what order, at what times.
- We go through your site’s paperwork needs, such as RAMS, before work begins.
- In each room, the old bead comes out and the joint is cleaned and treated.
- Anti-fungal sanitary silicone goes into wet areas, with suitable sealant elsewhere.
- Rooms are handed back in order, each with its cure time.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Clear the area around the work
- Mention any leaks or damp you’ve noticed
Get a quote
For a quote, ring 0345 464 0079 or send us an email with the location and a short description of the problem. You’ll have a clear quote before we start.
Read more
Aftercare tips
Simple care keeps the joints in good condition. We recommend:
- Plan resealing around quiet periods
- Keep extractor fans working and serviced
- Use mild cleaners on sealant, not bleach or abrasives
- Note the date each area was done
Extract fans need to work. Where a room has no window, the fan is what dries it out, and that’s what keeps mould away.
Water from a failed shower seal can travel: through floors, into ceilings and across into corridors. Dealing with the joint early stops that spread.
Do you need commercial sealant in Dunsbury?
Internal washrooms and en suites without a window rely entirely on extraction, so if the fan is weak, steam lingers and the sealant stays damp. That’s when black mould sets into the bead.
Most people get in touch after spotting something like this:
- Mouldy bathrooms flagged at a tenancy check
- Washroom sealant that looks dirty however often it’s cleaned
- Water marks on ceilings under bathrooms
- Whole floors of tired en suites
In and around Dunsbury, as anywhere, good commercial sealant starts with a clean, dry, properly prepared joint.
Comparing quotes
- Which colour the sealant will be
- Who turns up on the day
- Whether they seal over old material or remove it
- How the surfaces are prepared before sealing
Landlord and commercial work in Dunsbury
Hotels need rooms back in use, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
Commercial sealant in Dunsbury: local notes
If you run a hotel, guest house or holiday let in a coastal place like Dunsbury, heavy use in the busy months is hard on washroom and kitchen sealant, and any building work there should leave fire-rated joints made good. Hard water is the norm across most of the South East, which leaves limescale on sealant, grout and fittings, and it has to be cleaned off before new sealant goes in.
For buildings such as St. Mary's Church, its kitchen and washroom sealant needs looking after like anywhere else.
Dunsbury is about 7 miles south-west of Newport, in the Isle of Wight. We carry out commercial sealant for homes and businesses in Dunsbury and nearby, as part of our work across the Isle of Wight. 125 places in the Isle of Wight are on our list. For nearby work, see our Southampton page, about 18 miles away.
Jobs for commercial sealant in PO30 is quoted and booked the same way as anywhere else. Other places close to Dunsbury include Brook (1 mile south), Hulverstone (1 mile south-east), Brookgreen (1 mile south-east), Shalcombe (1 mile north-east) and Chilton Green (2 miles south-east). Further out, we also cover Newport (7 miles north-east), Ryde (14 miles east), Cowes (9 miles north-east), Sandown (13 miles east), Shanklin (12 miles east) and Ventnor (12 miles east). Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
What’s near Dunsbury
Well-known places in the area include Yarmouth Castle (3.9 miles north-west) and Calbourne Water Mill And Rural Museum (2.3 miles north-east). Not far away are Westover Down.