Portsmouth · England
Floor Joint Sealing in Portsmouth Point
Floor joint sealing across Portsmouth Point and nearby, with every bit of old sealant taken out first.
- Rigid edge joints in tiled floors
- Grout cracking in a straight line across a floor
- Concrete floor joints that have broken down
Why deal with it now?
Left open, concrete joints break down under traffic. Resealing it early protects the edges and keeps the damage down. Homes in smaller places like Portsmouth Point can face more weather, and failed outside joints let damp into walls. Inside, a split seal lets water into floors and panels just as it would anywhere.
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and send you a clear quote before we start.
Why choose Mr Mastic in Portsmouth Point
- Fully insured
- More than 20 years in sealant work
- Quality sealants from Arbo and Everbuild
- Every job guaranteed for a year
How we handle floor joint sealing in Portsmouth Point
Where skirting is painted, we can use a flexible sealant that takes paint. In wet areas we’d normally use silicone. We’re often asked to deal with skirting caulk that keeps splitting and perimeter joints in tiled floors filled with grout, on tiled floors, wet room & bathroom floors and commercial floors.
In smaller places like Portsmouth Point, new homes tend to come as small developments or single plots. Each still needs its sealant and floor joints finished properly from day one.
There’s a 12-month guarantee on every job, large or small.
- Location
- Portsmouth Point (PO1, PO5, PO12)
- Region
- Portsmouth
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Phone
- 0345 464 0079
- Updated
- 26 October 2026
What the job involves on each surface
Wet room and bathroom floors
Wet room floors rely on sound joints at the walls. It’s resealed with a sanitary silicone and we will say if the problem looks like more than the joint.
Tiled floors
The edge of a tiled floor, where it meets the wall or skirting, should be a flexible joint. Grout at the edge is removed and replaced with sealant.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Towns and villages near Portsmouth Point
What else we do in Portsmouth Point
Portsmouth Point: your questions answered
I let a flat near Portsmouth Harbour station. Can you help?
Yes, rental work is part of what we do. Just phone 0345 464 0079 or send us an email and tell us about the property, and we will give you a clear price.
Is Portsmouth Point in your area for floor joint sealing?
Yes, Portsmouth Point is within the area we cover. Our work covers London and the South East. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we will give you a clear price.
Can sealant along the skirting be painted?
It depends on the sealant, so let us know first. Joints that will be painted get a paintable product.
Do you seal kitchen plinths to the floor?
Yes. Where a floor meets a bath panel, kitchen plinth or skirting in a wet area, we use a flexible silicone.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
What do you need from me for a quote?
Just the basics: the address or postcode, what’s wrong and any access issues. Then ring 0345 464 0079 or send us an email.
Can you add a movement joint to a tiled floor?
Often, yes. Straight cracks in grout often show where a movement joint was needed. We rake out that line and seal it with flexible sealant.
What causes gaps between the floor and skirting?
Movement from drying timber and settling floors pulls the skirting and floor apart. Rigid fillers split, so we use a flexible sealant.
Floor joint sealing around Portsmouth Point
Across Portsmouth, 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.
Letting a property close to Portsmouth Harbour station? Then gaps at skirtings and thresholds are worth sealing between tenancies. If you look after a church, hall or community building such as Portsmouth Garrison church, joints in its floors, skirtings and thresholds need resealing as they wear.
Portsmouth Point is about 2 miles west of Southsea, in Portsmouth. Whether you’re in the middle of Portsmouth Point or further out, we cover floor joint sealing for every kind of property. Our area takes in 19 places across Portsmouth, large and small.
Work in PO1, PO5 and PO12 is quoted and booked the same way as anywhere else. We cover properties on Park Road, Nobbs Lane and Bath Square. Other places close to Portsmouth Point include Portsea (1 mile north), Clayhall (1 mile south-west), Haslar (1 mile south-west), Alverstoke (2 miles south-west) and Privett (2 miles west). Further out, we also cover Hilsea (3 miles north-east), Wymering (4 miles north), Paulsgrove (4 miles north), Cosham (4 miles north-east), Drayton (5 miles north-east) and Farlington (5 miles north-east).
Near you in Portsmouth Point
Typical jobs here are in homes near Charter Academy, Portsmouth Grammar School and Bridge Tavern, among other places. Portsmouth Point has its own railway station: Portsmouth Harbour station. Well-known places in the area include Southsea Castle (1.2 miles south-east) and Portsmouth Museum And Art Gallery (within half a mile east). For a walk, there’s Portsdown Hill and Milton Locks.
When to call us in Portsmouth Point
Some floors were never given a perimeter gap or movement joint. As it expands, the edges lift or crack and joints fail.
If you can see any of these, it’s time to have the joints looked at:
- Cracked caulk along skirting in bathrooms and kitchens
- Worn sealant at door thresholds
- Chipped and open joints in warehouse floors
- Dirt and water collecting in open floor joints
For site and facilities teams at buildings such as St Jude's CofE Primary School, floor joints in corridors, halls and entrances take heavy wear and need resealing before the edges break up.
Comparing quotes
- Are they insured?
- Whether all the old sealant comes out first
- Who does the work, and how experienced they are
- What happens if the job turns out different
How we quote for floor joint sealing
We quote each job individually. These are the things that affect it:
- When we can work, for business premises
- The number and length of the joints
- The number of rooms or windows
- Which sealant suits the joint
Doing several joints on one visit is usually more efficient than separate visits, so tell us about everything that needs sealing. We will give you a clear quote for the lot.
Asking for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Photos by email, if that’s easy
- Whether it’s a home or a business
- Where the job is, and your postcode
- Any access issues, like height or stairs
Need a quote? Please call 0345 464 0079 or drop us an email and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Work for landlords, hotels and businesses
We also work for property managers and facilities teams. We can quote a run of properties together.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we’ll give you a quote.
What happens on the day
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The work itself takes a morning or an afternoon for most homes from start to finish. In a smaller place like Portsmouth Point, parking is seldom the issue; lanes, gates and long drives are worth mentioning. If the job is outside, tell us about side access and how high the joints are.
- We start by looking at the floor, the gap and the traffic, then choose the product.
- Whatever is in the joint now, whether caulk, grout or sealant, comes out.
- The joint is cleaned, vacuumed and backed where depth needs controlling.
- A flexible sealant, or a floor-joint sealant for concrete, is applied in a colour to suit.
- The joint is tooled to a neat finish and we tell you when it can take feet and a mop.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Mention any parking rules near the property
- Tell us about any water getting in
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. Whenever you’re ready, phone 0345 464 0079 or send us an email.