Hampshire · England
Knowle Commercial Sealant
Commercial sealant in Knowle from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Whole floors of tired en suites
- Joints that need doing before an inspection or audit
- Split sealant around staff kitchen worktops and sinks
Leave it or put it right?
Refitting a washroom is a big, disruptive project. When the fittings are sound, renewing the sealant brings it back with far less upheaval. We will tell you if we find anything that needs another trade. Older cottages and farmhouses around Knowle can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
The cost depends on the amount of work, how much old material has to come out and access to the work. You’ll have a clear quote before any work starts.
What you get with us
- ARBOMaster approved applicator
- Anti-fungal sanitary silicone in wet areas
- We leave the area clean and tidy
- 4.9 on Google from 180+ five-star reviews
Take a look at how sealant jobs are priced or what customers say.
About our commercial sealant in Knowle
For a rental portfolio, resealing between tenants keeps bathrooms and kitchens presentable. Several addresses can go on one quote to keep things simple. We work on retail & leisure sites, office washrooms & kitchens and hotel bathrooms, and common reasons people get in touch are failed floor-level joints in accessible wet rooms and joints that need doing before an inspection or audit.
For a small place like Knowle, the journey and timings are agreed in advance, so it can be fitted around guests, clients or events where possible.
Every job comes with a one-year guarantee.
- Where
- Knowle (PO17)
- Wider area
- Hampshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Towns and villages near Knowle
What else we do in Knowle
Landlord and commercial work in Knowle
Housing providers, facilities teams and property managers book us too. Several sites can be quoted together, and we are fully insured.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
What happens on the day
On the day, we start by going over the job with you. We protect the surfaces around the joints before any work begins. Most jobs take as long as the scope needs, from one welfare room to a full building. Somewhere like Knowle needs a little journey planning: 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 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.
Preparing for the visit
- Clear the area around the work
- Mention if the joints have been sealed before
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.
Read more
Questions from Knowle
Do you cover smaller places like Knowle?
Yes. Knowle is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
Do you cover Knowle for commercial sealant?
Yes, Knowle is within the area we cover. Our work covers London and the South East. You can ring 0345 464 0079 or drop us an email and let us know what needs doing, and we will give you a clear quote.
Do you provide RAMS?
Tell us what paperwork your site needs, such as method statements, risk assessments or insurance details, and we’ll confirm what we can supply with the quote.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Where is Mr Mastic based?
We work from Crawley. We cover Knowle and the rest of Hampshire.
Can you quote for more than one area?
Yes. More than one area can go on one quote.
How long do rooms need to be out of use?
Plan for around 24 hours, or the cure time we give for that area. A room-by-room programme keeps only a few rooms out at once.
What do you need from me for a quote?
The location, the problem and the rough size of the job. If you can, email a few pictures.
Signs you need commercial sealant in Knowle
Commercial bathrooms get far more use than domestic ones, and daily cleaning with strong chemicals wears sealant down. So the silicone ages faster than it would at home.
The most common problems we see are:
- Split sealant where wet room floors meet walls
- Whole floors of tired en suites
- Washrooms that need sorting before an inspection
- Split sealant around staff kitchen worktops and sinks
Managing a site like Orchard Lea Infant School? Then washroom and kitchen sealant can be programmed around term times or opening hours.
Before you book anyone
- When the joint can take water or movement
- Which sealant they’ll use, and why
- Who does the work, and how experienced they are
- Is the old sealant removed completely?
Commercial sealant in Knowle: local notes
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.
Community buildings like Church of St Francis are part of the picture too: its kitchen and washroom sealant needs looking after like anywhere else. For landlords with property near Fareham station, sealant work can be quoted for a single flat or a whole portfolio.
Knowle is about 2 miles north of Fareham, in Hampshire. We provide commercial sealant to homes and businesses in Knowle and the surrounding area. Knowle is one of 683 towns and villages in Hampshire where we work for commercial sealant. There’s also a page for Portsmouth, about 7 miles away.
Every address in PO17 is covered for commercial sealant, from the main roads to the quietest streets. Local streets include Serotine Close, Boundary Walk and Park Approach, and we cover them all. Neighbouring places we cover for commercial sealant include Funtley (1 mile south), Tapnage (1 mile north-west), Heathfield (2 miles south), Segensworth (2 miles west) and Titchfield Park (2 miles south-west). Within a short drive, we also cover Winchester (13 miles north), Gosport (6 miles south-east), Havant (10 miles east), Eastleigh (9 miles north-west), Horndean (9 miles east) and Totton (13 miles west).
Landmarks near Knowle
In Knowle, that means homes and buildings near The Miners Arms and The Henry Cort Community College. For rail, the closest station is Fareham station, about 2 miles south of the centre. Other landmarks nearby include Portchester Castle (4.9 miles south-east) and Knowle Hospital (under half a mile north-east). Open spaces near Knowle include Portsdown Hill and Swanwick Lakes.
What the job involves on each surface
Hotel bathrooms
Early starts or out-of-hours work can be arranged around check-out and check-in.
Retail & leisure sites
Customer toilets reflect on the business, and fresh sealant makes them look well kept.
When something else is needed
A few problems are outside what sealant work can do:
- A broken extractor fan behind the mould problem
- Fire risk assessments or certification
- Cracked trays or baths rather than failed joints
If you are not sure, just ring 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Retail & leisure sites
- Student & care accommodation
- Hotel bathrooms
- Rental portfolios
- Office washrooms & kitchens
- Welfare facilities
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Log resealing so you know what’s due
- Book larger programmes for quieter times of year
- Check the joints during routine room inspections
- Keep strong chemicals and scourers off the joints
Add sealant checks to your planned maintenance. A quick look at each bathroom when rooms are checked spots problems early.
In a commercial building, a leak can quickly spread beyond one room: into ceilings below, walls next door and service voids. Early resealing keeps it from getting that far.