Argyll and Bute · Scotland
Sand mastic for sash & case windows in Stronmilchan, Argyll and Bute
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Stronmilchan and across Argyll and Bute. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Gaps round a timber door in stone or brick
- Gaps between timber frames and stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
Keeping the joints in good condition
After the cure time, these simple habits help:
- Inspect the joints round the windows every year or so
- Find out about consent before window work on a listed home
- Keep sills and gutters clear so water drains away
- Avoid patching sand mastic with silicone
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Sand mastic for homes and businesses in Stronmilchan
For a listed home or one in a conservation area, ask your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. We’re often asked to deal with gaps where the frame meets the masonry and silicone on a period window that looks wrong, on stone surrounds, brick reveals and period & listed homes.
Outdoor sealant needs a dry surface, so window work around Stronmilchan is planned around the weather. Tell us about access to all the windows and doors, upstairs included.
All our work comes with our one-year guarantee.
- Location
- Stronmilchan (PA33)
- Region
- Argyll and Bute
- Guarantee
- 12 months on all our work
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Should I try it myself first?
If you do try it yourself, take your time over the 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.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Common questions in Stronmilchan
Is Stronmilchan in your area for sand mastic?
Yes. We work across all of Scotland, and Stronmilchan is part of that. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear price.
I let a flat near Dalmally station. Can you help?
Yes, we work for letting agents and landlords. You can email us at info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before any work starts.
What should I tell you?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply email us at info@mrmastic.co.uk.
How long does the job take?
A typical job takes a few hours per window, depending on the condition of the joints. Your quote will say how long we expect yours to take.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. We can talk about working times when we quote.
Can I choose the sealant colour?
We help you choose a colour that suits. The product needed can limit the range.
Can you do several jobs on one visit?
Of course. Doing several areas at once is normally more efficient.
What exactly is sand mastic?
It’s the traditional filler for the joint round timber windows and doors. It’s made with sand and a linseed-oil-based binder.
Leave it or put it right?
Draughts round a sash window aren’t always the sashes. Open mastic joints round the box can let air in and new mastic seals them. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
Rather than a set price list, 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 us?
- Neat joints and a tidy finish
- Sanitary silicone with an anti-fungal additive in wet areas
- Approved under the ARBOMaster scheme
- One-year guarantee on every job
Read how sealant jobs are priced and customer reviews.
What happens on the day
All our tools and materials come with us in the van. Once we have agreed what’s being done, we protect the area and start. Most jobs take anything from a few hours to a full day, depending on how many windows. Outdoor work around Stronmilchan 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 check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic isn’t too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
How to prepare
- Let us know about earlier repairs to the joints
- Keep pets and children clear of the area while we work
- Try not to wet indoor joints just before the visit
Ask for a quote
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, email us at info@mrmastic.co.uk.
Advice
Frames and glazing around Stronmilchan
Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic. Stronmilchan 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.
Homes close to Glenorchy Parish Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Dalmally station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Stronmilchan is about 30 miles north of Helensburgh, in Argyll and Bute. We carry out sand mastic for homes and businesses in Stronmilchan. Our Argyll and Bute coverage runs to 118 places, and Stronmilchan is one of them. For nearby work, see our Glasgow page (48 miles or so).
Jobs for sand mastic in PA33 works the same way as everywhere else we cover. With the B8077 close by, Stronmilchan is simple for us to get to for sand mastic. Neighbouring places we cover for sand mastic include Lochawe (1 mile west), Dalmally (2 miles south-east), Ardbrecknish (7 miles south-west), Taynuilt (9 miles west) and Clachan (10 miles south). Island and remote addresses take a little more planning, so please mention your location when you drop us a line at info@mrmastic.co.uk.
Landmarks near Stronmilchan
The closest station to Stronmilchan is Dalmally station, about 0.9 miles south-east.
When something else is needed
It helps to know what we can’t do:
- Decayed frames that need repair
- Sashes that rattle, stick or won’t open
- Putty and glazing repairs
If you’re not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer.
Where we work in Stronmilchan
- Timber door frames
- Brick reveals
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Tenement windows
What affects the cost of sand mastic
You will get a clear quote before any work starts. It takes into account:
- The number of rooms or windows
- Whether there’s mould to deal with
- Any working-time requirements on site
- The old material and how stubborn it is
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
What to tell us for a quote
To make quoting easier, let us know:
- Access, such as stairs, a lift or height
- Roughly how big the job is
- What’s wrong with the joints now
- If someone has resealed it before
Need a quote? Please drop us a line at info@mrmastic.co.uk with a few details. You’ll know what we plan to do, and what it will cost, before any work begins.
Also near Stronmilchan
Also in Stronmilchan
Surface by surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Stone surrounds
Old stone surrounds are often uneven, so the joint varies in width. We shape it by hand to follow the stone.