Portsmouth · England
Cosham Floor Joint Sealing
We cover Cosham for sealing skirting-to-floor joints, tiled floor movement joints and concrete floor joints. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Failed seals where bathroom floors meet baths and panels
- Threshold joints that have opened or worn
- Failed joint filler in concrete floors
Floor joint sealing in Cosham
Painted skirting can be sealed with a flexible product that can be painted over. In wet areas we’d normally use silicone, which is not made to be painted. Common call-outs are for cracked caulk along skirting in bathrooms and kitchens and open joints around bathroom floor edges, across tiled floors, thresholds and concrete floor joints.
If you’ve bought a new home in or near Cosham, the first year or two is a good time to check the sealant. Gaps at skirtings, shower seals pulling away and missing mastic around frames are common snags.
A 12-month guarantee comes as standard, so you are covered after we have gone.
- Location
- Cosham (PO6, PO3, PO2)
- Region
- Portsmouth
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
What affects the quote in Cosham
For a quick quote, just ask. The main things that affect it are:
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
- Whether the work is at height
- The number of rooms or windows
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and give you a clear price before we start.
Asking for a quote
You do not need to know the technical terms. It helps if you can tell us:
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- If someone has resealed it before
- How many joints, rooms or windows are involved
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Keep floor cleaning water to a minimum at the edges
- Vacuum floor joints regularly to stop grit building up
- Act on grout cracks that run in a straight line
- Avoid caulk in bathrooms and kitchens
Don’t paint over silicone. If you plan to paint, we’ll use a paintable product.
In wet areas, an open floor joint lets water reach the subfloor. Resealing early keeps it out.
Also near Cosham
What else we do in Cosham
How the visit works
The work is kept neat and contained to the area we are working on. The job usually takes a few hours for most rooms, longer for large commercial floors, and we explain the cure time before we leave. Parking around Cosham is generally easier than in a town centre, but mention any lanes, gates or long drives. For outside work, side access and the height of the joints help us plan.
- We clear the edges of the floor so the joints are easy to reach.
- We take out the cracked caulk, grout or old sealant.
- We clean and dry the edges of the joint.
- A flexible sealant suited to the floor is applied and tooled.
- Finally, we check the work and talk you through aftercare.
Preparing for the visit
- Mention if the joints have been sealed before
- Keep pets and children clear of the area while we work
- Mention any parking rules near the property
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, call 0345 464 0079 or send us an email.
Related advice
Cosham questions
Do you cover smaller places like Cosham?
Yes, we do. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Do you cover Cosham for floor joint sealing?
Yes. We work across London and the South East, and Cosham is part of that. 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.
Is it OK to seal over old sealant?
No, and we never do. It may look fine at first, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
What causes gaps between the floor and skirting?
Floors and walls move a little with the seasons, and new floors settle. A flexible sealant closes the gap without cracking like caulk.
How much does floor joint sealing cost in Cosham?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
Is there a guarantee?
Yes. All our work carries our one-year guarantee.
How long will you be here?
As a guide, most jobs take a few hours, depending on the length of joint. Larger jobs naturally take longer, and we will tell you how long to expect.
Do you work on commercial floors?
Yes, from warehouses and units to offices and shops. Work can be planned around your hours with out-of-hours work where needed.
Surface by surface
Concrete floor joints
Sawn joints in concrete floors control where it cracks. We reseal them with a floor-joint product suited to the traffic.
Wet room and bathroom floors
Mop water gets into any open joint at the edge of a bathroom floor. A flexible seal stops water running into the gap.
New homes and floors in Cosham
Floors around Portsmouth run from suspended timber in older homes to concrete in newer houses and units, and they do not all move the same way. That’s why the skirting and threshold joints need a flexible seal.
Community buildings like Church of St Philip are part of the picture too: joints in its floors, skirtings and thresholds need resealing as they wear. If you look after a building such as Court Lane Junior Academy, entrance and corridor floor joints take a lot of traffic.
Cosham is about 2 miles south-west of Purbrook, in Portsmouth. Cosham gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 19 places across Portsmouth.
Our applicators cover all of the PO6, PO3 and PO2 postcode area for floor joint sealing and the streets around it. We cover properties on Dean Road, Park Lane and Elgin Road. Main roads around Cosham include the A397. We also cover the places around Cosham: Wymering (1 mile north-west), Hilsea (1 mile south), Drayton (1 mile east), Widley (1 mile north-east) and Paulsgrove (1 mile west). Larger places within reach include Southsea (4 miles south), Milton (3 miles south), Landport (3 miles south), Portsea (3 miles south-west), Portsmouth Point (4 miles south-west) and Fratton (3 miles south).
What’s near Cosham
We work in homes and buildings around The First Post pub, Alexandra Park and Springfield School, among other places. There’s a railway station in Cosham itself: Cosham station. A little further out are Tricorn Centre (2.9 miles south) and World War I Remembrance Centre (1 mile south-east). Green spaces nearby include Southmoor Nature Reserve and Portsdown Hill.
What sealant work can’t fix
Sealant isn’t the answer to every problem, and we’d rather say so up front. Sealant will not put right:
- A tiled floor that needs relaying
- Structural movement or subsidence
- Cracked or broken concrete slabs
If you are not sure, just call 0345 464 0079 or email us and we’ll give you a straight answer.
Surfaces we seal
- Tiled floors
- Concrete floor joints
- Wet room & bathroom floors
- Commercial floors
- Thresholds
- Skirting boards
Can I do it myself?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Some sealant jobs are within reach of a careful DIYer, 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 we’re called out for in Cosham
Decorators’ caulk is often used along skirting because it’s cheap and paintable. In a joint that moves or gets wet, it splits.
The most common problems we see are:
- Skirting caulk that keeps splitting
- Gaps between floors and kitchen plinths
- Perimeter joints in tiled floors filled with grout
- Gaps at thresholds between rooms
For landlords with property near Cosham station, a tidy floor and skirting joint helps a rental look ready for the next tenant.
Questions to ask before you book
- Are they insured?
- Who turns up on the day
- How the joint is cleaned and prepared
- Whether VAT is included