Highland · Scotland
Castletown Floor Joint Sealing
Floor joint sealing for Castletown, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Failed seals where bathroom floors meet baths and panels
- Gaps at thresholds between rooms
- Failed joint filler in concrete floors
Honest limits
Sealant is not the answer to every problem, and we will tell you before any work starts. It won’t solve:
- Large cracks that need a surveyor
- Floors that are uneven or need levelling
- Loose, hollow or cracked tiles, which need a tiler
If in doubt, email us at info@mrmastic.co.uk and we’ll say what we think before booking.
Joints and surfaces we work on
- Wet room & bathroom floors
- Skirting boards
- Concrete floor joints
- Tiled floors
- Thresholds
- Commercial floors
About our floor joint sealing in Castletown
Good floor joints come down to the right product and clean, prepared edges. Old caulk, grout or failed sealant comes out first, then clean, back and seal the joint. We work on tiled floors, skirting boards and commercial floors, and people most often call us about gaps at thresholds between rooms and chipped and open joints in warehouse floors.
For a place like Castletown, the journey and access are planned in advance. Inside work goes ahead in any weather; outside mastic needs a dry day.
Whatever the size of the job, you get the same 12-month guarantee.
- Location
- Castletown (KW14)
- Region
- Highland
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Different surfaces, different methods
Thresholds
Where a tiled floor meets timber or carpet, the joint takes movement from both sides. We bridge them with a flexible bead.
Concrete floor joints
Old filler, dust and debris are cleaned out of the joint first. We fit backing where needed.
Landlords, agents and businesses in Castletown
If you manage several properties in or around Castletown, jobs at different addresses can go on one quote. Send us the addresses and the work at each.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Joints and finishes in Castletown homes
Across Highland, floors range from older suspended timber floors to concrete slabs in newer homes and commercial units, and each moves in its own way. The joint at the skirting or threshold has to allow for that. Many new homes in Scotland are timber-framed, and as the frame dries and settles, skirting and sealant joints can open up.
Community buildings like St Trothan's Church are part of the picture too: joints in its floors, skirtings and thresholds need resealing as they wear.
Castletown is about 5 miles east of Thurso, in Highland. We carry out floor joint sealing for homeowners, landlords and businesses in Castletown and the surrounding area, as part of our work across Highland. Castletown is one of 253 places in Highland we cover for floor joint sealing.
We cover every part of KW14 for floor joint sealing. You’ll find streets such as Calder Square, Main Street and Traill Street, and we cover them all. We also cover Murkle (2 miles west), Dunnet (3 miles north-east), Brough (4 miles north), Bower (4 miles south-east) and Thurso (5 miles west). Remote and island addresses need a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
Landmarks near Castletown
Other landmarks nearby include Thurso Castle (4.4 miles west) and Dunbar Hospital (5.5 miles west). The countryside around Castletown includes St John's Loch.
FAQs for Castletown
Will you come out to Castletown?
Yes, we do. Our work covers the whole of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do floor joint sealing in Castletown?
Yes. We work across all of Scotland, and Castletown is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we will send you a clear quote.
Can sealant along the skirting be painted?
On joints you want to paint, yes. Silicone doesn’t take paint so mention it when you get a quote.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
What causes gaps between the floor and skirting?
Floors and walls move a little with the seasons, and new floors settle. We close it with a flexible sealant that moves with the floor.
Do you seal floor joints in bathrooms and kitchens?
Yes. The old joint comes out and a flexible silicone replaces it, colour-matched where it shows.
What does floor joint sealing cost?
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.
What do you need from me for a quote?
A short description and the location. If we need more, we’ll ask.
DIY versus a professional finish
A careful DIYer can reseal a simple joint, 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.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Common problems we fix in Castletown
Floors and walls move a little with the seasons. In winter, with the heating on, timber dries and gaps open and they change again in summer.
These are the problems we are asked about most:
- Dirt and water collecting in open floor joints
- Concrete floor joints that have broken down
- Open gaps along the bottom of skirting boards
- Failed seals where bathroom floors meet baths and panels
Around Castletown, as everywhere, floor joint sealing is only as good as the preparation behind it.
Comparing quotes
- What preparation is included
- How the colour is chosen
- When the joint can take water or movement
- How long the guarantee is
Aftercare tips
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep floor cleaning water to a minimum at the edges
- Sweep along the edges of the floor
- Do not paint over silicone
- Have a cracking tiled floor checked before tiles break
Have a look at the joints once the heating season is over. Small gaps at the ends can be touched up early on.
Concrete joints damaged by traffic get worse quickly. Sealing them early protects the edges and the floor safer.
What else we do in Castletown
The process
Most of a good job is in the preparation, so that is where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it normally takes a few hours, depending on the length of joint. Outdoor work around Castletown depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Indoor work goes ahead whatever the weather.
- 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.
- We apply a flexible sealant suited to the floor and smooth it.
- Finally, we check the work and talk you through aftercare.
Preparing for the visit
- Mention any parking rules near the property
- Mention any sign-in or site rules at work premises
- Tell us about access, such as stairs, a lift or high-level joints
How to get a quote
It all starts with a short chat. Describe the problem, the location and the size of the job. When it suits you, send an email to info@mrmastic.co.uk.