Perth and Kinross · Scotland
Sand mastic for sash & case windows in Comrie, Perth and Kinross
Sand mastic for Comrie, 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
- Mastic round period door frames that has failed
- Crumbling sand mastic round a window
Landlords, agents and businesses in Comrie
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
We also work for property managers and facilities teams. Several sites can go on one quote.
About our sand mastic in Comrie
We renew sand mastic around sash windows and doors in stone and brick. Out comes the old, loose mastic, the joint is prepared and new mastic is shaped by hand. If you have silicone on a period window that looks wrong and mastic round period door frames that has failed, we can put it right, on brick reveals, timber door frames and stone surrounds alike.
In and around a place like Comrie, homes range from older stone-built cottages to newer houses. Exposed frames and sills take the full force of wind-driven rain.
We guarantee the work for a year. If there’s a problem with our work within the year, let us know and we will sort it.
- Location
- Comrie (PH6)
- Wider area
- Perth and Kinross
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Places near Comrie
More services for Comrie
Windows and doors in Comrie
Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
If you live in an older home near Secession Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Comrie is about 18 miles north of Stirling, in Perth and Kinross. Across the PH6 area, our applicators can take on sand mastic. Comrie is one of 107 places in Perth and Kinross we cover for sand mastic. You can also see our page for Glasgow, roughly 37 miles from Comrie.
Here we cover the PH6 postcode area for sand mastic. Whether your property is on Queens Road, Dukes Road and Glebe Road or anywhere close by, our applicators can take on the job. We also cover St Fillans (5 miles west), Crieff (6 miles east), Muthill (7 miles south-east), Gilmerton (7 miles east) and Braco (8 miles south-east).
What’s near Comrie
Nearby you will also find Castle Cluggy (4.1 miles east) and Crieff Community Hospital (5.4 miles east). Open spaces near Comrie include Loch Monzievaird.
Common problems we fix in Comrie
Paint, silicone or cement used over old mastic causes problems. They don’t suit the joint, and they usually need raking out.
The problems people usually mention when they call include:
- Gaps between timber frames and stone or brick
- Weathered mastic on the most exposed windows
- Window mastic to renew ahead of painting
- A silicone bead on a sash window that spoils the look
In and around Comrie, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Questions to ask before booking
- What the cure time is
- How long the guarantee is
- Whether the sealant suits the joint
- What happens if the job turns out different
What happens on the day
The work is kept neat and contained to the joints we are treating, so you can carry on as normal. The job normally takes anything from a few hours to a full day, depending on how many windows, and we tell you how long to leave it before we go. Around Comrie, distance and access matter more than parking. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Let us know about stairs, lifts or work at height
- Tell us about any water getting in
Get a quote
For a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. We’ll send you a clear quote before any work starts.
Advice
Common questions in Comrie
Can you do sand mastic in Comrie?
Yes. Our work covers the whole of Scotland, and Comrie is part of that. Just email us at info@mrmastic.co.uk with a few details of the job, and we will send you a clear quote.
Is Comrie within the area you cover?
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.
Do you work for hotels and businesses?
Yes. We work in offices, washrooms, hotels and other commercial premises. We can talk about working times when we quote.
I rent my home. Can I book you?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Is it possible to paint over sand mastic?
Sand mastic is normally left unpainted, which is what traditional guidance recommends. Talk to us before any painting near it.
How long will you be here?
That depends on how much there is to do, but as a guide it takes anything from a few hours to a full day, depending on how many windows. We’ll tell you when we quote.
Is it worth trying it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can old silicone round a sash window be swapped for sand mastic?
Often, yes. With the silicone removed and the joint cleaned we point it with sand mastic.
Can I do it myself?
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.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
How the job changes by surface
Sash and case windows
Most of our sand mastic work is on sash windows. We renew the mastic round each box.
Timber door frames
A neat sand mastic joint round a front door suits a period home.
When it isn’t the sealant
New sealant can’t fix everything, and we’ll tell you before work begins. Sealant won’t put right:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that rattle, stick or will not open
- Broken panes
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before booking.
Joints and surfaces we work on
- Timber door frames
- Tenement windows
- Brick reveals
- Period & listed homes
- Stone surrounds
- Sash and case windows
Leave it or put it right?
New sash windows are a major, costly change, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround. In a place like Comrie, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we will explain the quote if you ask.
Why choose Mr Mastic in Comrie
- Anti-fungal sanitary silicone in wet areas
- We never seal over old sealant
- A 12-month guarantee on all work
- Rated 4.9 stars on Google
Take a look at our cost guide and what customers say.