Southampton · England

Itchen Floor Joint Sealing

Professional floor joint sealing in and around Itchen, with old sealant always removed completely.

  • Floor edges that trap water and grime
  • Gaps at thresholds between rooms
  • Gaps opening between the floor and skirting

Trusted floor joint sealing in Itchen

Landlords, agents and businesses in Itchen

Housing providers, facilities teams and property managers book us too. We can quote a run of properties together.

In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.

How we handle floor joint sealing in Itchen

A threshold joint has to cope with feet, movement and sometimes water. We seal them with a flexible sealant suited to the floor finishes either side. Common call-outs are for concrete floor joints that have broken down and open joints around bathroom floor edges, on thresholds, skirting boards and concrete floor joints.

Where new homes go up in smaller places like Itchen, it’s often a small development or a single plot. The sealant around baths, showers, frames and skirtings needs to be right from the start.

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.

Eleven members of the Mr Mastic team standing in front of branded white vans
Place
Itchen (SO19, SO14)
Wider area
Southampton
Cover
12 months on all our work
Quote
A clear quote up front
Phone
0345 464 0079
Last updated
26 October 2026

Floor joint sealing around Itchen

Across Southampton, floors range from older suspended timber floors to concrete slabs in newer homes and commercial units, and they don’t all move the same way. The joint at the skirting or threshold has to allow for that.

For site and facilities teams at buildings such as Ludlow Junior School, floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up. Rented homes near Woolston station change hands often, and open skirting and floor joints collect dirt and water, so seal them while the property is empty.

Itchen is about 2 miles south-east of Southampton, in Southampton. We carry out floor joint sealing for homeowners, landlords and businesses in Itchen. Our area takes in 40 places across Southampton, from the larger towns to small villages.

Every address in SO19 and SO14 is covered for floor joint sealing, from the main roads to the quietest streets. Whether your property is on Sea Road, Oak Road and West Road or a nearby road, our applicators can take on the job. Itchen sits on or near the A3025, so getting to you is simple. We also cover Peartree Green (1 mile north-west), Northam (1 mile north-west), Sholing (1 mile east), Bitterne (1 mile north-east) and St Mary's (1 mile west). Within a short drive, we also cover Shirley (3 miles north-west), Regents Park (3 miles west), Maybush (4 miles north-west), Coxford (4 miles north-west), Freemantle (3 miles west) and Lordswood (4 miles north-west). Being one of Southampton’s larger places, Itchen has every kind of property, from flats to offices.

Local landmarks in Itchen

Around Itchen, our work takes us to homes and buildings near Houndwell Park, Woolston School and Oasis Academy Sholing, among other places. There’s a railway station in Itchen itself: Woolston station. Nearby you’ll also find Bitterne Local History Society Heritage And Research Centre (0.9 miles north) and Marlands Shopping Centre (1.6 miles west). For a walk, there’s Netley Common.

Map of Itchen © OpenStreetMap contributors

Looking after it afterwards

After the cure time, these simple habits help:

  • Check the sealant is paintable before decorating
  • Do not fill floor joints with caulk where they move or get wet
  • Vacuum floor joints regularly to stop grit building up
  • Avoid sloshing water against skirting

Keep heavy traffic off resealed concrete joints for the cure time we give you. Cone off the area if needed until it’s ready.

Open skirting gaps let in draughts, dust and sometimes insects. Sealing it early keeps the room cleaner.

The process

We keep the work tidy and contained to the area we’re working on. Expect the work to take a few hours, depending on the length of joint. A visit to Itchen is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.

  1. First, the floor type, the gap and the traffic are checked.
  2. We remove what’s in the joint now.
  3. The joint is vacuumed clean and backing fitted where needed.
  4. We apply the sealant in a colour that suits the floor.
  5. We tool it neatly and tell you when it can be walked on and cleaned.

Before we arrive

  • Move anything stored near the joints
  • For indoor joints, keep the area dry beforehand if you can
  • Tell us about any water getting in

How to get a quote

Need a quote? Please phone 0345 464 0079 or send us an email and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.

Ask for a quote

Related advice

Common problems we fix in Itchen

A floor laid tight to the walls has no room to move. As it expands, the edges lift or crack and joints fail.

Any of these means the joints need attention:

  • Grout cracking in a straight line across a floor
  • Threshold joints that have opened or worn
  • Failed seals where bathroom floors meet baths and panels
  • Gaps opening between the floor and skirting

If you look after a church, hall or community building such as Jesus Chapel - St Mary Extra, joints in its floors, skirtings and thresholds need resealing as they wear.

Comparing quotes

  • Are they insured?
  • Whether the sealant suits the joint
  • How long the guarantee is
  • Whether you can choose the colour

10 questions to ask before you book

Itchen questions

I let a flat near Woolston station. Can you help?

Yes. We work for letting agents and landlords as well as homeowners. You can phone 0345 464 0079 or send us an email with the details for a clear quote.

Is Itchen in your area for floor joint sealing?

Yes. Our work covers London and the South East, and Itchen is part of that. Just call 0345 464 0079 or drop us an email with a few details of the job, and we will send you a clear quote.

Do you use a paintable sealant?

Where the skirting will be painted, we can use a flexible sealant that takes paint. Silicone is not made to be painted, so we use it where the joint stays unpainted.

How long will you be here?

It depends on the size of the job, but as a guide it takes a morning or an afternoon for most homes. We will tell you when we quote.

Do you have insurance?

Yes, we are fully insured for every job we do.

Can you reseal concrete floor joints in an industrial unit?

Yes. We reseal concrete floor joints in commercial and industrial units. We will talk through the traffic and choose a sealant suited to it.

Do you remove the old sealant?

Yes, always, and completely. New sealant won’t bond properly to old, so any old material comes out before anything new goes in.

What does floor joint sealing cost?

It depends on the job, so we quote each one individually. To get one, call 0345 464 0079 or email us with a short description of the job.

What affects the quote in Itchen

Some jobs are bigger than they look, and some smaller. The main factors:

  • Any working-time requirements on site
  • Whether there’s mould to deal with
  • Whether the work is at height
  • The product the joint needs

Combining jobs into one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. We will send you a clear quote for the lot.

Asking for a quote

A few details help us give you an accurate quote. When you ask for a quote, tell us:

  • If it’s domestic, commercial or a hotel
  • Photos by email, if that’s easy
  • What the problem is, such as mould, gaps, leaks or cracking
  • Any access issues, like height or stairs

To get a quote, call 0345 464 0079 or email us with the location and a short description of the problem. You’ll have a clear quote before we start.

DIY versus a professional finish

A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.

What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.

What happens if it’s left?

Not every floor joint takes the same sealant: skirting and tiled floors need flexibility, wet areas need water resistance and concrete needs a product suited to wheels. Getting that choice wrong is a common reason joints fail. Homes in smaller places like Itchen can face more weather, and failed outside joints let damp into walls. Indoors, a failed seal lets water into floors and panels as it would anywhere.

A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you’re unsure, call 0345 464 0079 or send us an email and we’ll give you an honest view and a quote.

Why us?

  • Sanitary silicone with an anti-fungal additive in wet areas
  • Tidy, careful work
  • A 12-month guarantee on all work
  • Over 20 years’ experience

Read our cost guide or what customers say.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job