Portsmouth · England
Floor Joint Sealing in Southsea
Floor joints in Southsea need attention? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Worn sealant at door thresholds
- Chipped and open joints in warehouse floors
- Failed seals where bathroom floors meet baths and panels
Floor joint sealing in Southsea
Wet-area floor joints keep water out of the gap behind skirting and plinths. A flexible silicone seal keeps it out and stops dirt collecting. We work on commercial floors, thresholds and skirting boards, and people most often call us about gaps between floors and kitchen plinths and cracked caulk along skirting in bathrooms and kitchens.
In a town like Southsea, skirting and floor joints open up as homes settle and floors move with the seasons. Those joints need a flexible sealant, as rigid filler soon cracks out.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Place
- Southsea (PO5, PO4, PO1)
- Region
- Portsmouth
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
FAQs for Southsea
Can you help a landlord with a rental near Fratton station?
Yes. We work for letting agents and landlords as well as householders. You can call 0345 464 0079 or email us with the details for a clear quote.
Is there a guarantee on floor joint sealing in Southsea?
All our work, in Southsea and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Are you ARBOMaster approved?
Yes. Mr Mastic is an ARBOMaster approved applicator, and we are fully insured.
Do you remove the old sealant?
Yes. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
When can I walk on the floor?
That varies with the sealant and the room. Before we leave, we tell you when it can be walked on, mopped and driven over so you can plan.
How long does floor joint sealing take?
Most jobs take a morning or an afternoon for most homes, including the preparation. Your quote will say how long we expect yours to take.
Why has a gap opened under my skirting?
It’s normally the floor moving: heating drying the timber, or a filler that is too rigid. A flexible bead keeps up with the movement.
Is caulk good enough for skirting?
Caulk works on still, dry joints, but it splits where the joint moves or gets wet. For most floor joints, we use a flexible sealant.
Nearby places to Southsea
Also in Southsea
What happens if it’s left?
Putting new grout into a crack that keeps reappearing does not last. The movement is still there, so the grout fails again. A flexible movement joint is the fix. In a family home in Southsea, a failed seal around a bath or a frame lets water into places you cannot see, like the floor under a bath, the back of a panel or the inside of a wall. Left alone, that means rot, damp and a bigger repair.
Some things make a job bigger or smaller: the old material and how easily it comes out, any mould to treat, and whether we need extra access for height. Your quote takes all of that into account.
What you get with us
- Rated 4.9 stars on Google
- An ARBOMaster approved applicator
- More than 20 years in sealant work
- A 12-month guarantee on all work
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Check the sealant is paintable before decorating
- Lift furniture rather than dragging it across joints
- Get cracks along tile grout lines looked at early
- Check skirting joints after the heating season
Silicone sealant is not made to take paint. If you plan to paint, we will use a paintable product.
Water getting into floor joints in bathrooms and kitchens can damage what’s underneath. Resealing early keeps it out.
Floor joint sealing around Southsea
Floors around Portsmouth run from suspended timber in older homes to concrete in newer houses and units, and each moves in its own way. The joint at the skirting or threshold has to allow for that.
Rented homes near Fratton station change hands often, and open skirting and floor joints collect dirt and water, so seal them while the property is empty. For buildings such as St Margaret of Scotland, joints in its floors, skirtings and thresholds need resealing as they wear.
Southsea is about 2 miles south of Portsmouth, in Portsmouth. If you need floor joint sealing in Southsea, please phone 0345 464 0079 or send us an email for a quick quote. We cover Portsmouth from our Crawley base, Southsea included. Southsea is one of 19 towns and villages in Portsmouth where we work.
Work in PO5, PO4 and PO1 works the same way as everywhere else we cover. Local streets include Bath Road, Liss Road and Beach Road, and we cover them all. Neighbouring places we cover for floor joint sealing include Milton (1 mile north-east), Fratton (1 mile north), Kingston (1 mile north), Landport (1 mile north-west) and Baffins (2 miles north). Further out, we also cover Hilsea (3 miles north), Wymering (4 miles north), Paulsgrove (5 miles north), Cosham (4 miles north), Drayton (4 miles north) and Farlington (5 miles north).
Near you in Southsea
In Southsea, that means homes and buildings near The Festing pub, St Edmund's Catholic School and Mayville High School, among other places. The closest station to Southsea is Fratton station, roughly 0.8 miles north of the centre. Nearby you will also find St. Mary's Hospital (1 mile north) and Southsea Castle (1 mile south-west). Open spaces near Southsea include Milton Locks.
The process
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for most rooms, longer for large commercial floors, depending on the size of the job. In Southsea, parking is rarely complicated, though it helps to know about driveways or restrictions, and mention if the work is upstairs, in a flat or high on the outside.
- We start by checking the floor, the joint and what traffic it takes.
- Any old caulk, grout or sealant is raked or cut out.
- The joint is vacuumed clean and backing fitted where needed.
- We apply the sealant in a colour that suits the floor.
- We tool it neatly and tell you when it can be walked on and cleaned.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Mention if the joints have been sealed before
- Mention any parking rules near the property
Getting a quote
To get a quote, call 0345 464 0079 or send us an email with the location and a short description of the problem. We will give you a clear price before any work starts.
Advice
Work for landlords, hotels 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.
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
What sealant work cannot fix
We will always be straight with you, so here’s what new sealant will not do:
- Cracked or broken concrete slabs
- Failed waterproofing under a wet room floor
- A tiled floor that needs relaying
Not sure which it is? You can phone 0345 464 0079 or drop us an email and we’ll tell you honestly.
Joints and surfaces we work on
- Thresholds
- Concrete floor joints
- Commercial floors
- Tiled floors
- Skirting boards
- Wet room & bathroom floors
Common problems we fix in Southsea
When a tiled floor has no movement joints, the grout takes the strain. You will see a crack running along the grout, showing where a movement joint was needed.
The problems people usually mention when they call include:
- Open joints around bathroom floor edges
- Caulk that has cracked where the floor moves
- Grout cracking in a straight line across a floor
- Perimeter joints in tiled floors filled with grout
Schools such as Craneswater Junior School are buildings too, and floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up.
What to look for in a quote
- How long the guarantee is
- What the quote includes, VAT included or not
- Whether the sealant suits the joint
- Whether they’re fully insured
How we quote for floor joint sealing
The price is agreed before any work begins. It takes into account:
- How many rooms, windows or areas are involved
- Whether there’s mould to deal with
- Working hours on commercial sites
- The old material and how stubborn it is
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. You will know the price before we begin.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Whether it’s a home or a business
- Whether it has been sealed before
- The rough size of the job
- Access, such as stairs, a lift or height
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.