Portsmouth · England
Floor & skirting joints in Kingston, Portsmouth
Floor joint sealing for Kingston and the surrounding area: the right sealant, proper preparation and a neat finish. Call for a quick quote.
- Grout cracking in a straight line across a floor
- Concrete floor joints that have broken down
- Gaps at thresholds between rooms
Looking after it afterwards
To keep the joints looking good and working properly:
- Have a cracking tiled floor checked before tiles break
- Vacuum floor joints regularly to stop grit building up
- Avoid caulk in bathrooms and kitchens
- Check skirting joints after the heating season
Keep heavy traffic off resealed concrete joints for the cure time we give you. Mark the area off so drivers avoid it until it’s ready.
A gap under the skirting collects dust and lets draughts through. Sealing it early keeps the room cleaner.
Floor joint sealing for homes and businesses in Kingston
We seal floor joints in homes, offices and commercial buildings across Kingston. We start by checking the floor type and the joint, because the right sealant depends on both. We’re often asked to deal with dirt and water collecting in open floor joints and worn sealant at door thresholds, across skirting boards, tiled floors and wet room & bathroom floors.
In and around Kingston, floors range from older timber boards to tiles and newer finishes, each moving in its own way. Skirting and threshold joints need a sealant that suits the floor.
There’s a 12-month guarantee on every job.
- Location
- Kingston (PO1, PO3, PO4)
- Region
- Portsmouth
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- Phone
- 0345 464 0079
- Page updated
- 26 October 2026
Leave it or put it right?
Leaving skirting gaps until the next decorating job lets dirt and draughts in. It’s a quick job to seal them now in most rooms. Around Kingston, water from a failed joint in an older home can soak into timber and plaster, which is far harder to put right than the sealant itself.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
Why Kingston clients choose us
- Fully insured
- Sanitary silicone with an anti-fungal additive in wet areas
- One-year guarantee on every job
- A choice of colours where the product allows
Read our cost guide or our reviews.
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. It normally takes a morning or an afternoon for most homes. A visit to Kingston is planned like any other: the time, the access and where to park are agreed in advance. If the work is outside, the weather plays a part, as sealant needs a dry surface.
- First, the floor type, the gap and the traffic are checked.
- We remove what’s in the joint now.
- We vacuum out the joint and add backing where the depth needs setting.
- The chosen sealant goes in, coloured to suit the floor.
- We tool it neatly and tell you when it can be walked on and cleaned.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
- Tell us about access, such as stairs, a lift or high-level joints
Ask for a quote
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we will explain what’s involved and send you a clear quote.
Read more
What else we do in Kingston
What the job involves on each surface
Concrete floor joints
We clean concrete joints out thoroughly before sealing first. Backing goes in where the depth needs controlling.
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.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
What affects the cost of floor joint sealing
We quote each job individually. These are the things that affect it:
- Mould in or behind the old joints
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- Any working-time requirements on site
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, ring 0345 464 0079 or email us and we’ll give you an honest view and a quote.
What we need to know
To make quoting easier, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- Pictures of the joints, sent by email
- Any previous sealing or DIY work
- If it’s domestic, commercial or a hotel
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, call 0345 464 0079 or send us an email.
Landlord and commercial work in Kingston
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured.
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Kingston: your questions answered
Is Kingston in your area for floor joint sealing?
Yes. Our work covers London and the South East, and Kingston is part of that. You can ring 0345 464 0079 or send us an email and let us know what needs doing, and we will send you a clear quote.
I let a flat near Fratton station. Can you help?
Yes, landlords and agents are among the people we work for. Just call 0345 464 0079 or drop us an email with the address and what needs doing, and we’ll give you a clear quote.
Will I be able to paint over the new joint?
On joints you want to paint, yes. Silicone does not take paint.
Do the sealants smell?
It depends on the product. Some products have a noticeable smell, others very little.
How long does floor joint sealing take?
A typical job takes a few hours for most rooms, longer for large commercial floors, including preparation and clearing up. We’ll confirm how long when we quote.
Do you guarantee your work?
Yes, always. There’s a 12-month guarantee on every job, wherever you are.
My floor grout keeps cracking in a line. Can you help?
Usually, yes. A crack along a grout line often means the floor needs room to move. We rake out that line and seal it with flexible sealant.
Are you insured?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
New homes and floors in Kingston
Floors around Portsmouth run from suspended timber in older homes to concrete in newer houses and units, and they don’t all move the same way. That’s why the skirting and threshold joints need a flexible seal.
For landlords with property near Fratton station, open skirting and floor joints collect dirt and water, so seal them while the property is empty. Schools such as Miltoncross Academy are buildings too, and floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up. For buildings such as Church of St Cuthbert, floor and skirting joints in halls and kitchens wear like any others.
Kingston is about 1 mile south-east of Portsmouth, in Portsmouth. Jobs in Kingston get the same care as everywhere else we work: old sealant removed completely, careful preparation and a one-year guarantee. Our area takes in 19 places across Portsmouth, from the larger towns to small villages.
Work in PO1, PO3 and PO4 is quoted and booked the same way as anywhere else. Whether your property is on Renny Road, Clive Road and Union Road or a nearby road, our applicators can take on the job. You will find Kingston on the A288, so it’s easy for us to get to. Nearby, we also carry out floor joint sealing in Fratton (1 mile south-west), Baffins (1 mile north-east), Copnor (1 mile north), Portsmouth (1 mile north-west) and Landport (1 mile west). Larger places within reach include Wymering (3 miles north), Paulsgrove (3 miles north), Cosham (3 miles north), Drayton (3 miles north) and Farlington (3 miles north-east).
Local landmarks in Kingston
Around Kingston, our work takes us to homes and buildings near Langstone Infant School, Graham Arms and Alexandra Park. For rail, the closest station is Fratton station, roughly 0.5 miles south-west of the centre. Well-known places in the area include Charles Dickens Birthplace Museum (1 mile west) and St Mary's Hospital (under half a mile south-east). Green spaces nearby include Milton Locks and Portsdown Hill.