Highland · Scotland
Sand mastic for sash & case windows in Laggan, Highland
Sand mastic across Laggan and nearby, with every bit of old sealant taken out first and a 12-month guarantee.
- Mastic that needs renewing before redecorating
- Gaps between timber frames and stone or brick
- Old cement repairs round a window that have failed
Signs you need sand mastic in Laggan
Timber frames move with the seasons. The movement cracks the mastic little by little.
The problems people generally mention when they call include:
- Gaps between timber frames and stone or brick
- A silicone bead on a sash window that spoils the look
- Draughts and rain around sash boxes
- Mastic dropping out of the joint
Homes close to South Laggan Church include some older properties, and the joint between an old wall and a newer frame is generally the first place rain gets in.
What to look for in a quote
- Whether the sealant suits the joint
- How long the guarantee is
- Which colour the sealant will be
- What happens if they find a problem under the old sealant
How we handle sand mastic in Laggan
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We work on period & listed homes, sash and case windows and brick reveals, and common reasons people get in touch are mastic round period door frames that has failed and mastic dropping out of the joint.
Mastic can only go onto a dry joint, so outside work in Laggan depends on the weather. Tell us about access to all the windows and doors, upstairs included.
All our work is covered by our 12-month guarantee, wherever you are in Highland.
- Place
- Laggan (PH34)
- Wider area
- Highland
- Cover
- One year on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Landlord and commercial work in Laggan
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we will give you a quote.
How the visit works
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to a full day, depending on how many windows, including the tidy-up. Somewhere like Laggan may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not 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
- Tell us about access, such as stairs, a lift or high-level joints
- Tell us if parking is tricky
Ask for a quote
There’s no standard price list. Instead, we give you a clear price for your job. To arrange one, send an email to info@mrmastic.co.uk.
Advice
Leave it or put it right?
Not every filler suits an old window surround. Sand mastic is the like-for-like choice and that can be important for listed homes. In a place like Laggan, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
Leaving a failed joint normally makes the job bigger, not smaller. If you are not sure whether it needs doing, drop us a line at info@mrmastic.co.uk and we will give you an honest view and a quote.
Why choose Mr Mastic in Laggan
- 12-month guarantee on every job
- Tidy, careful work
- Anti-fungal silicone where joints get wet
- Over 20 years’ experience
When it isn’t the sealant
We won’t take on work that will not last, so these are the limits:
- Damaged stone surrounds
- Cracked or broken glass
- Decisions on consent for listed homes
If you’re not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer.
Surfaces we seal
- Stone surrounds
- Period & listed homes
- Timber door frames
- Brick reveals
- Tenement windows
- Sash and case windows
Windows and doors in Laggan
Laggan 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. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
Around Laggan, as everywhere, sand mastic is only as good as the preparation behind it.
Laggan is about 37 miles south-west of Inverness, in Highland. Anywhere in PH34, we can carry out sand mastic at your property. Our area takes in 253 places across Highland, from the larger towns to small villages. Dundee is on our list too, around 80 miles away.
Jobs for sand mastic in PH34 works the same way as everywhere else we cover. Nearby, we also carry out sand mastic in Aberchalder (5 miles north-east), Newtown (6 miles north-east), Fort Augustus (9 miles north-east), Glen Moriston (10 miles north) and Roybridge (10 miles south). If you are somewhere remote, the job takes a little more planning, so let us know when you get in touch.
Landmarks near Laggan
Nearby you will also find Invergarry Castle (2.5 miles north-east). For a walk, there’s Loch Oich.
Your questions about sand mastic in Laggan
Is sand mastic in Laggan guaranteed?
All our work, in Laggan and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Do you cover smaller places like Laggan?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
What is sand mastic?
It’s a mix of sand and a linseed-oil-based binder. It’s applied by hand and finished to sit neatly against the masonry.
How long will you be here?
That depends on how much there is to do, but most jobs take a few hours per window, depending on the condition of the joints. We’ll give you a better idea when we quote.
When will the new mastic be hard?
The surface skins quite quickly, then hardens over a longer period. Timing depends on the weather and the joint.
Can you work on commercial sites?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Does someone need to be in?
It depends on the job. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
Do you offer different sealant colours?
We’ll suggest a colour to suit the surroundings. The product needed can limit the range.
More services for Laggan
How we quote for sand mastic
We don’t publish a price list. What we look at:
- The size of the job
- Any working-time requirements on site
- Whether the work is at height
- How many rooms, windows or areas are involved
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
What we need to know
When you contact us, it’s useful to know:
- Whether it’s a home or a business
- A few photos by email, if you can
- How many joints, rooms or windows are involved
- The problem you’ve noticed
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.
Keeping the joints in good condition
Simple care keeps the joints in good condition. We recommend:
- Check with your local planning authority if your home is listed
- Go gently near the mastic when preparing windows
- Sort the mastic before the decorators arrive
- Ask us before painting near the mastic
Make sure water drains away from the window surround. Water sitting against the mastic shortens its life.
Gaps round a sash box let in draughts and rain. The longer it’s left, the more the joint opens.