Perth and Kinross · Scotland
Sand mastic for sash & case windows in Glenfarg, Perth and Kinross
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Glenfarg, backed by a 12-month guarantee. Call for a quick quote.
- A silicone bead on a sash window that spoils the look
- Cracked mastic round a front door frame
- Open joints round the window box
How to look after the new joints
How long the joints last depends on use and care. 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
- Clear gutters so water does not pour onto the windows
Avoid painting over the new mastic, as traditional guidance advises. If you’re redecorating, ask us first.
Fine cracks show the mastic is starting to fail. Renewing it then is simpler than waiting until it falls out.
Sand mastic for homes and businesses in Glenfarg
For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. We work on period & listed homes, stone surrounds and timber door frames, and common reasons people get in touch are tired mastic found when preparing windows for paint and a silicone bead on a sash window that spoils the look.
Many older Scottish homes still have timber windows set into stone walls. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
A one-year guarantee comes as standard, so you are not left on your own once the job is done.
- Where
- Glenfarg (PH2)
- Wider area
- Perth and Kinross
- Guarantee
- One year on every job
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Windows and doors in Glenfarg
Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
In and around Glenfarg, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint. Homes close to Arngask Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Glenfarg is about 9 miles south of Perth, in Perth and Kinross. Anywhere in PH2, our applicators can take on sand mastic. Our Perth and Kinross coverage runs to 107 places, Glenfarg among them. There’s also a page for Dundee, about 21 miles away.
Postcode districts we cover here for sand mastic: PH2. You’ll find streets such as Main Street, Birch Lane and Elm Row, and we cover them all. We also cover the places around Glenfarg: Duncrievie (1 mile south), Gateside (3 miles east), Milnathort (4 miles south), Aberargie (4 miles north-east) and Glenlomond (4 miles south-east). We also work in nearby towns such as Perth (9 miles north), Auchterarder (12 miles west), Kinross (5 miles south), Letham (9 miles north), Scone (10 miles north) and Tulloch (10 miles north).
What’s near Glenfarg
We work in homes and buildings around Arngask Library, among other places. A little further out are Balvaird Castle (2.3 miles east) and Bridge of Earn Hospital (4.7 miles north). Not far away are West Lomond.
The process
Before we leave, we go over the finished joints with you. The visit itself generally takes a few hours for a single window, longer for several, depending on how much there is to do. For a place like Glenfarg, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Keep children and pets away from the work area
- Mention if the joints have been sealed before
- Mention any leaks or damp you’ve noticed
Ask for a quote
Every job is quoted individually, so start by telling us what you need. Just send an email to info@mrmastic.co.uk with the details, and pictures are welcome.
Read more
Why deal with it now?
Not every draught comes from the sashes themselves. Open mastic joints round the box can let air in, and renewing the mastic closes them. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Doing several joints on one visit normally makes better use of the time than several visits. We’ll give you a clear quote for the lot.
What you get with us
- An ARBOMaster approved applicator
- We’re fully insured
- Domestic, commercial and hotel work
- Anti-fungal sanitary silicone in wet areas
Take a look at how sealant jobs are priced and customer reviews.
Landlords, agents and businesses in Glenfarg
Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.
For anyone letting property in or around Glenfarg, several properties can go on one quote. Send us the addresses and the work at each, and photos by email help.
How we quote for sand mastic
Call for a quick quote. The main things that affect it are:
- Which sealant suits the joint
- Any mould that needs treating
- How much there is to do
- How many rooms, windows or areas are involved
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, email us at info@mrmastic.co.uk for an honest opinion and a quote.
What we need to know
Before you ask for a quote, have a think about:
- If it’s domestic, commercial or a hotel
- Pictures of the joints, sent by email
- Any access issues, like height or stairs
- What the problem is, such as mould, gaps, leaks or cracking
For a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. We’ll give you a clear quote before any work starts.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. Everything old must be removed first.
If you are 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 fails, we can still redo it.
Towns and villages near Glenfarg
Also in Glenfarg
FAQs for Glenfarg
Do you cover smaller places like Glenfarg?
Yes, we do. We work across all of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is Glenfarg in your area for sand mastic?
Yes, Glenfarg is within the area we cover. We work across all of Scotland. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing, and we’ll give you a clear quote.
Do you offer different sealant colours?
Yes. White, clear and grey are common, and other colours are available for many products, and we will agree it with you first.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
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.
Do you take out the old sealant first?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Can you replace silicone on a period window with sand mastic?
In most cases. We remove the silicone and clean the joint before the sand mastic goes in.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
How the job changes by surface
Timber door frames
Round a period front door, sand mastic gives the right look.
Sash and case windows
The mastic round a sash window is on show so we finish it carefully.