Medway · England
Floor Joint Sealing in Capstone
We cover Capstone for sealing skirting-to-floor joints, tiled floor movement joints and concrete floor joints. Old sealant removed completely, joints prepared properly.
- Chipped and open joints in warehouse floors
- Open joints around bathroom floor edges
- Threshold joints that have opened or worn
Floor joint sealing in Capstone, done properly
Large tiled floors, and those over underfloor heating, often need movement joints. We can turn a line of grout into a movement joint by replacing it with flexible sealant coloured to suit the grout. We work on concrete floor joints, skirting boards and tiled floors, and the jobs we see most are grout cracking in a straight line across a floor and dirt and water collecting in open floor joints.
Around Capstone, older homes often have timber floors that move through the year, which is why skirting and threshold joints need a flexible sealant, not filler.
A 12-month guarantee comes with the work, just as it does everywhere we cover.
- Location
- Capstone (ME7)
- Region
- Medway
- Cover
- One year on every job
- Quotes
- A clear quote up front
- Telephone
- 0345 464 0079
- Last updated
- 26 October 2026
Your questions about floor joint sealing in Capstone
Can you help a landlord with a rental near Gillingham (Kent) station?
Yes, we work for landlords and letting agents. Just call 0345 464 0079 or drop us an email and tell us about the property, and we will give you a clear price.
Is Capstone within the area you cover?
Yes. Capstone is within the area we cover, which takes in towns, villages and rural addresses. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator.
Do you work on commercial floors?
Yes. Old filler is cleaned out and the joint resealed with a floor-joint product. Let us know about the traffic and we will quote.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new sealant bonds properly.
Will the old sealant be removed?
Yes. We cut out all the old sealant and clean the joint.
Do you offer different sealant colours?
We help you choose a colour that suits. The choice depends on the product the joint needs.
Can I do it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What else we do in Capstone
The process
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours for most rooms, longer for large commercial floors in most cases. Somewhere as small as Capstone, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We start by looking at the floor, the gap and the traffic, then choose the product.
- We take out any old caulk, sealant or grout along the line.
- 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.
Before we arrive
- Move anything stored near the joints
- Plan for the work area to be out of bounds to pets and children
- Tell us if parking is tricky
Get a quote
For a quote, ring 0345 464 0079 or email us with the location and a short description of the problem. You will have a clear quote before work begins.
Related advice
Signs you need floor joint sealing in Capstone
Some floors were never given a perimeter gap or movement joint. It pushes against the walls and skirting as it expands.
If you can see any of these, it’s time to have the joints looked at:
- Cracked caulk along skirting in bathrooms and kitchens
- Failed seals where bathroom floors meet baths and panels
- Open gaps along the bottom of skirting boards
- Failed joint filler in concrete floors
Rented homes near Gillingham (Kent) station change hands often, and gaps at skirtings and thresholds are worth sealing between tenancies.
What to look for in a quote
- What preparation is included
- What happens if they find a problem under the old sealant
- What insurance they hold
- What the quote includes, VAT included or not
Can I do it myself?
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
Landlord and commercial work in Capstone
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We also work for property managers and facilities teams. We can quote a run of properties together, and we’re fully insured for the work.
Floor joint sealing in Capstone: local notes
Across Medway, 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. That is why the skirting and threshold joints need a flexible seal.
If you look after a church, hall or community building such as All Saints Church, joints in its floors, skirtings and thresholds need resealing as they wear. If you look after a building such as Hempstead Infant School, floor and threshold joints in busy corridors wear quickly and are best resealed early.
Capstone is about 1 mile south-west of Gillingham, in Medway. Our applicators cover floor joint sealing for homeowners, landlords and businesses in Capstone and the surrounding area. 68 places in Medway are on our list, from the larger towns to small villages. Our Chelmsford page covers work nearby.
Postcode districts we cover here for floor joint sealing: ME7. Close by, we work in Darland (1 mile north), Hale (1 mile north-west), Hempstead (1 mile south-east), Gillingham (1 mile north-east) and Chatham (1 mile west). Further out, we also cover Rochester (4 miles north-west), Strood (4 miles north-west), Hoo St Werburgh (5 miles north), Rochester Riverside (3 miles north-west), Peters Village (4 miles west) and Brompton (3 miles north-west).
Local landmarks in Capstone
Locally, jobs take us to homes and businesses close to Chatham Grammar School for Girls, The Star pub and The Robert Napier School and the streets around them. The closest station to Capstone is Gillingham (Kent) station, about 2 miles north. Well-known places in the area include Medway Maritime Hospital (1.7 miles north-west) and Pentagon Shopping Centre (2.3 miles north-west). Open spaces near Capstone include Burham Down and Blue Bell Hill.
When something else is needed
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Structural movement or subsidence
- A tiled floor that needs relaying
- Bouncy or failing floorboards
If you are not sure, just call 0345 464 0079 or drop us an email and we’ll give you a straight answer.
Joints and surfaces we work on
- Concrete floor joints
- Commercial floors
- Thresholds
- Tiled floors
- Wet room & bathroom floors
- Skirting boards
Why act early in Capstone
Open joints along wet floors let water into the subfloor and behind skirting. Sealing them now keeps the problem at the surface. Around Capstone, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed. Ask us for a quote and we’ll explain what it covers.
Why choose Mr Mastic in Capstone
- Full insurance on every job
- A sealant colour to suit the surroundings
- More than 20 years in sealant work
- Any old sealant cut out fully, not covered over
Different surfaces, different methods
Tiled floors
A crack running along a grout line is often a sign of a missing movement joint. We rake out that line and seal it where it suits the floor.
Thresholds
Where a tiled floor meets timber or carpet, the joint takes movement from both sides. A flexible sealant bridges them.