Highland · Scotland
Sand Mastic in Caol
We cover Caol for traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Gaps round a timber door in stone or brick
- Tired mastic found when preparing windows for paint
- Draughts and rain around sash boxes
Signs you need sand mastic in Caol
Scraping and sanding before painting can loosen old mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
Keep an eye out for these signs:
- Crumbling sand mastic round a window
- Mastic worn away on windows facing the weather
- Open joints round the window box
- Mastic that needs renewing before redecorating
For landlords with property near Banavie station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Comparing quotes
- How the joint is cleaned and prepared
- What happens if they find a problem under the old sealant
- The length of the guarantee
- How long to leave it before use
About our sand mastic in Caol
We work across Caol renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. We work on period & listed homes, timber door frames and sash and case windows, and common reasons people get in touch are crumbling sand mastic round a window and draughts and rain around sash boxes.
In and around a place like Caol, homes range from older stone-built cottages to newer houses. Wind-driven rain finds any gap around a frame or sill.
You get a one-year guarantee, the same in Caol as everywhere else we work.
- Location
- Caol (PH33)
- Wider area
- Highland
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Other services in Caol
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Find out about consent before window work on a listed home
- Renew mastic before redecorating the windows
- Go gently near the mastic when preparing windows
- Look over the window mastic once a year
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. Painting over failed mastic hides the problem for a while.
Landlord and commercial work in Caol
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
Common questions in Caol
Do you work for landlords with property near Banavie station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. You can drop us a line at info@mrmastic.co.uk with the details for a clear quote.
Is Caol within the area you cover?
Yes. Caol is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Are you ARBOMaster approved?
Yes. We’re approved under the ARBOMaster scheme, which is run for the Arbo sealant brand.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will advise.
Do you guarantee sand mastic work?
Every job comes with our one-year guarantee, and we are fully insured.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
Is it worth trying it myself?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Movement, water and weather all affect the choice, and we’ll tell you what we’re using.
Different surfaces, different methods
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Timber door frames
Round a period front door, sand mastic gives the right look.
How it works
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before work begins. Most jobs take a few hours per window, depending on the condition of the joints. Somewhere like Caol may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- First, we look at the surrounds with you and agree what needs doing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- Keep pets and children clear of the area while we work
- Let us know about parking restrictions
- Tell us about access, such as stairs, a lift or high-level joints
Getting a quote
For sand mastic in Caol, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Read more
What affects the quote in Caol
There’s no set price list, because no two jobs are the same. What we look at:
- When we can work, for business premises
- How much there is to do
- How much old sealant there is and how hard it is to remove
- How easy the joints are to reach
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please drop us a line at info@mrmastic.co.uk.
Helping us quote
You do not need to know the technical terms. It helps if you can tell us:
- Access, such as stairs, a lift or height
- Where the property is
- If someone has resealed it before
- A few pictures by email, if you can
For a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We’ll give you a clear quote before any work starts.
Frames and glazing around Caol
Caol is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Caol is in the west of Scotland, which is wetter than the east, so there’s plenty of rain for the mastic around older windows and doors to keep out.
Around Caol, as everywhere, sand mastic is only as good as the preparation behind it.
Caol is in Highland. Anywhere in PH33, our applicators can take on sand mastic. Caol is one of 253 places in Highland we cover. We also work in Glasgow, about 75 miles from Caol.
Postcode districts we cover here for sand mastic: PH33. Whether your property is on Glen Nevis Road, Camesky Road and Macquarrie Court or a nearby road, we can help. If you’re just outside Caol, we cover Taobh Lochaidh (1 mile east), Banbhaidh (1 mile north), Inverlochy (1 mile south), Corpach (1 mile north-west) and Fort William (2 miles south). If you are somewhere remote, a little more planning is needed, so let us know when you get in touch.
What’s near Caol
Typical jobs here are in homes near Black Parks and Lochaber High School and the streets around them. There’s a railway station in Caol itself: Banavie station. Well-known places in the area include Treasures Of The Earth (1.1 miles west) and Belford Hospital (1.3 miles south).
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Sash cords, weights and draught-proofing of the sashes
- Whether work needs listed building consent
- Damaged stone surrounds
If you are not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer.
What we seal
- Tenement windows
- Period & listed homes
- Sash and case windows
- Stone surrounds
- Timber door frames
- Brick reveals