Argyll and Bute · Scotland
Sand Mastic in Tobermory
Sand mastic for Tobermory, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Old cement repairs round a window that have failed
- Gaps round a timber door in stone or brick
- Weathered mastic on the most exposed windows
About our sand mastic in Tobermory
Across Tobermory, we renew sand mastic around sash and case windows. Each joint is raked out, prepared and pointed by hand for a neat, traditional finish. We work on brick reveals, timber door frames and sash and case windows, and common reasons people get in touch are crumbling sand mastic round a window and cement or filler used on old window joints that has cracked.
In and around a place like Tobermory, homes range from older stone-built cottages to newer houses. Wind-driven rain finds any gap around a frame or sill.
Every job is covered by a 12-month guarantee, wherever you are in Argyll and Bute.
- Where
- Tobermory (PA75)
- Wider area
- Argyll and Bute
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What sand mastic looks like in Tobermory
Tobermory 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. That is hard on the mastic around older windows and doors, especially on the side facing the sea. The west of Scotland is wetter than the east, so there’s plenty of rain for the mastic around older windows and doors to keep out.
Schools such as Tobermory High School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Tobermory is in Argyll and Bute. Tobermory gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Tobermory is one of 118 towns and villages in Argyll and Bute we cover for sand mastic.
Every address in PA75 is within our area for sand mastic, from the main roads to the quietest streets. You’ll find streets such as Main Street, Breadalbane Street and Albert Street, all of which we cover. With the A848 and B882 close by, Tobermory is easy for our applicators to reach. Other places close to Tobermory include Baliscate (1 mile south), Kilchoan (5 miles north), Ballygown (9 miles south-west), Salen (9 miles south-east) and Lochaline (13 miles south-east). As one of the bigger places in Argyll and Bute, Tobermory has every kind of property, from flats to offices. Island and remote addresses take a little more planning, so tell us where you are when you ask for a quote.
Near you in Tobermory
Around Tobermory, our work takes us to homes and buildings near Aros Park and the streets around them. A little further out are Mull Museum (under half a mile east) and St Columba's Roman Catholic Church and Drimnin Castle (2.8 miles east). Green spaces nearby include 'S Àirde Beinn and Loch Peallach.
Questions from Tobermory
Does the coastal weather in Tobermory affect outside sealant?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Do you cover smaller places like Tobermory?
Yes. Tobermory is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
What exactly is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It combines sand with a linseed-oil-based binder.
Do you take out the old sealant first?
Yes, every time. New sealant will not bond properly to old, so the joint is cleaned back first.
Should I try DIY first?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
Can I paint the new mastic?
The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we’ll talk you through it.
Do you do commercial work?
Yes. We can plan bigger jobs in stages to suit the site.
Is consent needed for window work on a listed home?
Yes, it’s worth checking. Ask your local planning authority whether consent is needed for listed or conservation-area properties.
Keeping the joints in good condition
Good habits help new joints last longer. Our tips:
- Plan mastic work ahead of painting
- Find out about consent before window work on a listed home
- Go gently near the mastic when preparing windows
- Leave the new mastic unpainted
Leave the new mastic unpainted, which is the traditional advice. If you’re redecorating, ask us first.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
Signs you need sand mastic in Tobermory
Paint, silicone or cement used over old mastic causes problems. They do not move with the timber and we normally remove them.
These are the problems we’re asked about most:
- Mastic worn away on windows facing the weather
- Mastic that needs renewing before redecorating
- Wind and rain getting in round a sash window
- Cement or filler used on old window joints that has cracked
Homes close to Parish Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What your quote should include
- When the joint can take water or movement
- Which colour the sealant will be
- The length of the guarantee
- Whether VAT is included
Also in Tobermory
Should I try it myself first?
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
What happens on the day
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take anything from a few hours to a full day, depending on how many windows. Outdoor work around Tobermory depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Work indoors is not affected.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Let us know about earlier repairs to the joints
- Let us know about parking restrictions
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Just email us at info@mrmastic.co.uk with the details and send pictures if you have them.
Related advice
What affects the quote in Tobermory
Your quote is based on your job. We take into account:
- How many rooms, windows or areas are involved
- Any working-time requirements on site
- Any mould that needs treating
- Whether the work is at height
There are no prices on our website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
Helping us quote
When you call or email, it’s useful to know:
- The rough size of the job
- Whether it has been sealed before
- The address or postcode of the job
- Photos by email, if that is easy
There’s no standard price list, as no two jobs are quite the same. Instead, we send you a clear quote for your job. To arrange one, drop us a line at info@mrmastic.co.uk.
Surface by surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
For landlords and businesses
Hotels need rooms back in use, so the work can be planned room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.