Argyll and Bute · Scotland
Sand mastic for sash & case windows in Ganavan, Argyll and Bute
Our applicators work in Ganavan on traditional burnt sand mastic around sash and case windows and doors in stone and brick. Old material cut out, joints cleaned and sealed neatly.
- Modern sealant on a period surround
- Patchy fillers round a sash window
- Mastic round period door frames that has failed
Signs you need sand mastic in Ganavan
Previous repairs in cement or silicone often trap water or crack away. They don’t suit the joint, and they usually need raking out.
If you can see any of these, it’s time to have the joints looked at:
- Old sand mastic that has cracked, crumbled or fallen out
- Window mastic to renew ahead of painting
- Gaps where the frame meets the masonry
- Silicone on a period window that looks wrong
If you look after a building such as Oban High School, its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- Which colour the sealant will be
- Who does the work, and how experienced they are
- Is the old sealant removed completely?
- When the joint can take water or movement
Sand mastic for homes and businesses in Ganavan
Sand mastic skins over fairly quickly, but it takes longer to harden fully. Traditionally, sand mastic is left unpainted, so ask us before you decorate. We’re often asked to deal with window mastic to renew ahead of painting and mastic worn away on windows facing the weather, on tenement windows, stone surrounds and sash and case windows.
Mastic can only go onto a dry joint, so outside work in Ganavan depends on the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
Big or small, you get the same 12-month guarantee.
- Where
- Ganavan (PA34)
- Wider area
- Argyll and Bute
- Guarantee
- 12 months on all our work
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Windows and doors in Ganavan
Ganavan 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. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Sash and case windows are common in older Scottish homes, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
Rented homes near Oban station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out.
Ganavan is in Argyll and Bute. Jobs in Ganavan get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Ganavan is one of 118 places in Argyll and Bute where we work for sand mastic. Glasgow is on our list too, around 61 miles away.
Every address in PA34 is covered for sand mastic. Sand mastic is available to properties on Ganavan Sands and Ganavan Road. Neighbouring places we cover for sand mastic include Dunollie (1 mile south), Dunbeg (1 mile north-east), Oban (2 miles south), North Connel (3 miles north-east) and Connel (3 miles east). If you’re somewhere remote, a little more planning is needed, so mention it when you ask for a quote.
Around Ganavan
The closest station to Ganavan is Oban station, roughly 1.7 miles south of the centre. Other landmarks nearby include Lorn and Islands Hospital (2.5 miles south) and Oban Museum (1.2 miles south). Open spaces near Ganavan include Barr Mòr and Lochan Dubh.
Leave it or put it right?
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. Around Ganavan, water from a failed joint in an older stone home can soak into timber and plaster.
Instead of a standard rate, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- Fully insured
- Any old sealant cut out fully, not covered over
- More than 20 years in sealant work
- 4.9 on Google from 180+ five-star reviews
Take a look at what affects the cost or our reviews.
FAQs for Ganavan
Does the coastal weather in Ganavan affect outside sealant?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are usually the first to need attention.
Can you help a landlord with a rental near Oban station?
Yes, rental work is part of what we do. You can send an email to info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before work begins.
Do you work in Ganavan?
Yes. We work in Ganavan. To book, drop us a line at info@mrmastic.co.uk.
What sealant do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We will tell you what we’re using and why.
Should I try DIY first?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
Will there be a smell?
Some sealants have a smell while they cure, but it fades. Ventilation helps.
Do you hold any approvals?
Yes. We hold ARBOMaster approved applicator status.
What do you need from me for a quote?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
What sealant work can’t fix
New sealant can’t fix everything, and we’ll tell you before any work starts. It will not solve:
- Sash cords, weights and draught-proofing of the sashes
- Decisions on consent for listed homes
- Rotten sashes, sills or window boxes (a joiner’s job)
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer.
Where we work in Ganavan
- Period & listed homes
- Brick reveals
- Tenement windows
- Stone surrounds
- Sash and case windows
- Timber door frames
What happens on the day
There is not much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes a few hours for a single window, longer for several, including the tidy-up. Outdoor work around Ganavan 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 look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- We dress the finish so it sits neatly against the masonry.
How to prepare
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
- Let us know about earlier repairs to the joints
Get a quote
We do not publish a price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, drop us a line at info@mrmastic.co.uk.
Read more
Landlord and commercial work in Ganavan
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
We work for landlords and letting agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
Aftercare tips
Joint life depends on how it’s used and looked after. We suggest:
- Leave the new mastic unpainted
- Go gently near the mastic when preparing windows
- Check with your local planning authority if your home is listed
- Have rotten timber repaired before new mastic goes in
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at before trying a quick fix.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.