Highland · Scotland
Sand Mastic in Portskerra
Our applicators work in Portskerra on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and every job guaranteed for a year.
- Gaps where the frame meets the masonry
- Draughts and rain around sash boxes
- Mastic that needs renewing before redecorating
How we handle sand mastic in Portskerra
Silicone on a period window often looks wrong and is not always the right material. Sand mastic is the traditional choice, and we can replace one with the other. If you have failed mastic on an exposed elevation and patchy fillers round a sash window, we can help, on sash and case windows, brick reveals and tenement windows alike.
Mastic can only go onto a dry joint, so outside work in Portskerra depends on the weather. Tell us about access to all the windows and doors, upstairs included.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Portskerra (KW14)
- Region
- Highland
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Honest limits
Some problems need a builder, plumber or other trade rather than us:
- Crumbling stone or brickwork round the window
- Timber that has rotted
- Broken panes
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think before booking.
What we seal
- Timber door frames
- Sash and case windows
- Stone surrounds
- Period & listed homes
- Tenement windows
- Brick reveals
More services for Portskerra
When to call us in Portskerra
Water gets into small cracks in the mastic and pushes it out. Windows facing the weather tend to go first.
Signs it’s time to call us include:
- Silicone on a period window that looks wrong
- Tired mastic found when preparing windows for paint
- Weathered mastic on the most exposed windows
- Cracked mastic round a front door frame
In and around Portskerra, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Questions to ask before you book
- Whether you can choose the colour
- What the cure time is
- What insurance they hold
- Who does the work, and how experienced they are
Portskerra: your questions answered
Do you cover smaller places like Portskerra?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Is Portskerra in your area for sand mastic?
Yes, Portskerra is within the area we cover. Our work covers the whole of Scotland. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing.
Do you offer different sealant colours?
Usually, yes. White, clear and grey are common, and other colours are available for many products, and we’ll agree it with you first.
What sealant do you use?
Quality sealants from brands including Arbo and Everbuild, chosen to suit the joint. We’ll tell you what we’re using and why.
Can landlords and businesses book you?
Yes. As well as homeowners, we work for landlords, agents, businesses and hotels across Highland.
Where is Mr Mastic based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
Is it worth trying it myself?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Do I need to be at home?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
What we do, step by step
Before we leave, we go over the finished joints with you and explain the cure time. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. Outdoor work around Portskerra 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.
- Each surround is checked first.
- The joint is raked out and cleaned.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Mention any parking rules near the property
- Clear items away from the joints we’re working on
- Keep pets and children clear of the area while we work
Getting a quote
If you are in Portskerra and need sand mastic, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
Read more
What affects the cost of sand mastic
Every job gets its own quote. These are the things that affect it:
- How much old sealant there is and how hard it is to remove
- Any mould that needs treating
- How much there is to do
- When we can work, for business premises
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and agree the price before starting.
What we need to know
You do not need to know the technical terms. Just tell us:
- The rough size of the job
- Any previous sealing or DIY work
- The type of property
- The problem you’ve noticed
Every job is quoted individually, so start by telling us what you need. Just send an email to info@mrmastic.co.uk with the details.
DIY versus a professional finish
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Why deal with it now?
If you are redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. In a place like Portskerra, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
We do not show prices on the website, because the cost depends so much on the job itself. For a quick quote, please email us at info@mrmastic.co.uk.
Why book with us
- 180+ five-star Google reviews
- Any old sealant cut out fully, not covered over
- Anti-fungal sanitary silicone in wet areas
- We leave the area clean and tidy
See what affects the cost and what customers say.
Portskerra homes and the weather
Portskerra is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
For jobs in and around Portskerra, choosing the right material for each joint is as important as a tidy finish.
Portskerra is about 15 miles west of Thurso, in Highland. Jobs in Portskerra get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. 253 places in Highland are on our list, large and small.
Jobs for sand mastic in KW14 is quoted and booked the same way as anywhere else. That includes homes and businesses on Bayview Avenue, Mackay Terrace and Shore Street. Neighbouring places we cover for sand mastic include Melvich (1 mile south-east), Strathy (3 miles west), Reay (5 miles east), Am Blàran Odhar (11 miles west) and Forss (11 miles east). Island and remote addresses take a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
Local landmarks in Portskerra
Open spaces near Portskerra include Loch Sgiathanach.
What the job involves on each surface
Stone surrounds
We take care not to mark the stone when the old mastic comes out.
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.