Na h-Eileanan Siar · Scotland
Portvoller Sand Mastic
Our applicators work in Portvoller on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly.
- Gaps where the frame meets the masonry
- Silicone on a period window that looks wrong
- Draughts and rain around sash boxes
Why it’s worth doing now in Portvoller
Cement-based fillers and modern sealants don’t always suit a period surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please email us at info@mrmastic.co.uk and we will talk you through it.
Why book with us
- ARBOMaster approved applicator
- Fully insured
- Over 20 years’ experience
- Anti-fungal silicone where joints get wet
See our cost guide and what customers say.
Sand mastic for homes and businesses in Portvoller
A silicone bead around a sash window can look out of place and doesn’t suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. If you are dealing with mastic worn away on windows facing the weather and gaps where the frame meets the masonry, we can help, on brick reveals, sash and case windows and timber door frames alike.
Mastic can only go onto a dry joint, so outside work in Portvoller depends on the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
The work is covered for a year after we finish. If there’s a problem with it, please drop us a line at info@mrmastic.co.uk.
- Place
- Portvoller (HS2)
- Wider area
- Na h-Eileanan Siar
- Guarantee
- One year on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Common problems we fix in Portvoller
Age is the main cause. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
Any of these means the joints need attention:
- A silicone bead on a sash window that spoils the look
- Wind and rain getting in round a sash window
- Old cement repairs round a window that have failed
- Window mastic to renew ahead of painting
Around Portvoller, as everywhere, sand mastic is only as good as the preparation behind it.
Before you book anyone
- Whether you can choose the colour
- How long to leave it before use
- Whether the sealant suits the joint
- How the joint is cleaned and prepared
Common questions in Portvoller
Will you come out to Portvoller?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland, including the islands, where work is planned around ferry crossings. Just mention lanes, gates or anything else about the route when you book.
Do you cover Portvoller for sand mastic?
Yes. We work across all of Scotland, and Portvoller is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear price.
How long will you be here?
As a guide, most jobs take a few hours per window, depending on the condition of the joints. Larger jobs naturally take longer, and we’ll say how long yours will take.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. Then send an email to info@mrmastic.co.uk.
Can landlords and businesses book you?
Yes. We work for householders, landlords, letting agents, businesses and hotels.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. If you’re redecorating the window, ask us first and we will advise.
Do you take out the old sealant first?
Yes, always, and completely. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Portvoller homes and the weather
Portvoller is within about 1 mile of 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. Island jobs need planning around ferries and the weather, so give us as much notice as you can.
Schools such as Aird Primary School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Portvoller is about 9 miles east of Stornoway, in Na h-Eileanan Siar. Anywhere in HS2, we cover sand mastic for homes and businesses. Portvoller is one of 87 towns and villages in Na h-Eileanan Siar where we work for sand mastic.
All of HS2 is within our area for sand mastic, from the main roads to the quietest streets. Neighbouring places we cover for sand mastic include Port Mholair (1 mile north-east), Aird (1 mile south-west), Shulishader (2 miles south-west), Sulaisiadar (2 miles south-west) and Garrabost (3 miles south-west). Island and remote addresses take a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
Landmarks near Portvoller
The countryside around Portvoller includes Loch an Tiumpan.
Looking after it afterwards
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Ask the planning authority about consent for listed or conservation-area homes
- Make sure water runs off the sill
- Leave the new mastic unpainted
- Plan mastic work ahead of painting
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at rather than patching it.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
For landlords and businesses
We also work for property managers and facilities teams in Portvoller and across Na h-Eileanan Siar. Several sites can be quoted together, and we’re fully insured.
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
The process
When we get to you, we check the joints match what you told us. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a single window, longer for several. Outside jobs in Portvoller need a dry day, because sealant won’t bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Keep children and pets away from the work area
- For business premises, tell us about site rules or sign-in
- Clear the area around the work
Get a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add photos by email if you can.
Read more
Places near Portvoller
What else we do in Portvoller
Quotes for sand mastic in Portvoller
Call for a quick quote. The main things that affect it are:
- Which sealant suits the joint
- How many areas need sealing
- How easy the joints are to reach
- How much there is to do
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Asking for a quote
Before you ask for a quote, have a think about:
- A few photos by email, if you can
- What’s wrong with the joints now
- The type of property
- Where the property is
We don’t publish a price list. Instead, your job gets its own clear quote. To get started, send an email to info@mrmastic.co.uk.
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
The biggest DIY mistake is sealing over old sealant. New silicone will not bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.