Highland · Scotland
Sand mastic for sash & case windows in Corran, Highland
Sand mastic in Corran from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughts and rain around sash boxes
- Old sand mastic that has cracked, crumbled or fallen out
- Weathered mastic on the most exposed windows
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
If you’ve already had a go yourself, that’s fine. We cut it out and start again, so just mention it when you contact us.
How we handle sand mastic in Corran
On many period windows, sand mastic looks right and suits the building. Newer frames usually get a flexible sealant instead, and we’ll talk through which suits your home. We are often asked to deal with draughts and rain around sash boxes and modern sealant on a period surround, across sash and case windows, period & listed homes and tenement windows.
Outdoor sealant needs a dry surface, so window work around Corran is planned around the weather. Let us know about access to every frame, including any upstairs.
Big or small, you get the same 12-month guarantee.
- Where
- Corran (PH33)
- Wider area
- Highland
- Guarantee
- A year, on every job
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Common problems we fix in Corran
Some old mastic was never deep enough. Mastic that is too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Most people get in touch when they notice something like this:
- Cracked mastic round a front door frame
- Old cement repairs round a window that have failed
- Draughty sash windows at the surround
- Mastic worn away on windows facing the weather
If you live in an older home near Ardgour Parish Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- Who turns up on the day
- How the joint is cleaned and prepared
- Whether they seal over old material or remove it
- Is VAT in the price?
Corran: your questions answered
Do you cover Corran for sand mastic?
Yes. We work across all of Scotland, and Corran is part of that. You can send an email to info@mrmastic.co.uk and tell us what needs doing, and we’ll give you a clear quote.
Will you come out to Corran?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Is the work guaranteed?
Every job comes with our one-year guarantee, and we are fully insured.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once.
Can you seal over the old sealant?
No, because it fails. We remove every bit of old sealant first.
Can you match the sealant colour?
Most of the time, yes. We’ll explain which colours are available and agree one before work begins.
Do you do commercial work?
Yes. Hotels, offices and other businesses use us.
Are you ARBOMaster approved?
Yes. We are approved under the ARBOMaster scheme.
What happens on the day
You don’t need to clear the whole room or building before we come, just the space around the work. We protect the rest, and the job takes a few hours per window, depending on the condition of the joints for a typical job. Outdoor work around Corran depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
How to prepare
- For business premises, tell us about site rules or sign-in
- Keep children and pets away from the work area
- Tell us about any previous sealing or DIY attempts
Ask for a quote
For a quote, send an email to info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
Read more
What we can’t put right
To be straight with you, some problems need a different trade:
- Masonry that needs repairing
- Planning or listed building consent (your local planning authority decides)
- Cracked or broken glass
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think before you book.
Where we work in Corran
- Timber door frames
- Brick reveals
- Sash and case windows
- Tenement windows
- Stone surrounds
- Period & listed homes
Frames and glazing around Corran
Corran is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
Around Corran, as everywhere, sand mastic is only as good as the preparation behind it.
Corran is in Highland. If you need sand mastic in Corran, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We cover Highland from our Crawley base, Corran included. Our Highland coverage runs to 253 places, and Corran is one of them. Glasgow is on our list too, around 71 miles away.
Our applicators cover all of the PH33 postcode area for sand mastic and the streets around it. If you are just outside Corran, we cover Clo Mhuillin (1 mile south-west), Inchree (1 mile east), Kentallen (3 miles south), Duror (5 miles south) and Ballachulish (5 miles south-east). We also work in nearby towns such as Fort William (8 miles north-east), Caol (10 miles north-east), Inverlochy (9 miles north-east) and Kinlochmore (11 miles east). For island and remote addresses, a little more planning is needed, so let us know when you get in touch.
Near you in Corran
The countryside around Corran includes Ardsheal Hill and Lochan na Luireach.
Towns and villages near Corran
Also in Corran
Aftercare tips
So the new joints stay in good condition:
- Keep modern sealant off the mastic
- Check with your local planning authority if your home is listed
- Take care around the mastic when scraping paint
- Get any rot dealt with first
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Renewing mastic before redecorating saves doing it twice. Painting over failed mastic hides the problem for a while.
What affects the cost of sand mastic
Jobs vary more than people expect. What affects the quote:
- When we can work, for business premises
- Whether the work is at height
- How many areas need sealing
- How much there is to do
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
Asking for a quote
Photos by email are helpful but not essential. Try to tell us:
- The type of property
- What’s wrong with the joints now
- A few pictures by email, if you can
- Any previous sealing or DIY work
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved.
What happens if it’s left?
If you’re redecorating, renew the mastic first. Paint over cracked mastic will not stop the gaps, and the new mastic is traditionally left unpainted. Around Corran, water from a failed joint in an older stone home can soak into timber and plaster.
What you pay reflects the work, not a rough estimate. That’s why we ask about the job first and agree the price before starting.
What you get with us
- Rated 4.9 stars on Google
- Neat joints and a tidy finish
- Quality sealants from Arbo and Everbuild
- One-year guarantee on every job
Take a look at how sealant jobs are priced and our reviews.