Highland · Scotland
Fort Augustus Window Mastic
Mastic around window and door frames, sills and patio doors for homes and businesses in Fort Augustus and across Highland. Fully insured, ARBOMaster approved and guaranteed for a year.
- Whistling draughts around closed windows
- Mastic that’s falling out in pieces
- Gaps where the sill meets the wall
Window mastic in Fort Augustus, done properly
Every window and door frame has a gap around it, and mastic is what closes it. When it cracks, hardens or pulls away, draughts and rain get in. Our applicators cut it out and replace it with a flexible, weatherproof sealant. If you are dealing with draughts coming in around windows and doors and untidy mastic left by window fitters, we can put it right, on uPVC windows, patio & French doors and aluminium frames alike.
In and around a place like Fort Augustus, homes range from older stone-built cottages to newer houses. Exposed frames and sills take the full force of wind-driven rain.
All of our work is guaranteed for twelve months, in Fort Augustus and everywhere else we cover.
- Place
- Fort Augustus (PH32)
- Region
- Highland
- Guarantee
- 12 months on all our work
- Price
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
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.
Windows and doors in Fort Augustus
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that. Fort Augustus is in the west of Scotland, which is wetter than the east, which means the mastic around window and door frames has to cope with a lot of rain.
If you look after a building such as Kilchuimen Academy, larger buildings have plenty of frames, and the mastic around each one ages.
Fort Augustus is about 28 miles south-west of Inverness, in Highland. For window mastic in and around Fort Augustus, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We are based in Crawley and cover Highland. Fort Augustus is one of 253 places in Highland we cover. Dundee is on our list too, about 79 miles from Fort Augustus.
Every address in PH32 is within our area for window mastic, from the main roads to the quietest streets. We cover properties on Station Road, Free Church Road and Canal Side and the roads around them. Neighbouring places we cover for window mastic include Newtown (3 miles south-west), Aberchalder (4 miles south-west), Glen Moriston (5 miles north-west), Invermoriston (5 miles north-east) and Stratherrick (7 miles north-east). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Landmarks near Fort Augustus
We work in homes and buildings around The Lovat Hotel, among other places. Green spaces nearby include Murligan Hill and Loch Uanagan.
What we can’t put right
We will not take on work that will not last, so here’s what sealant can’t put right:
- Condensation trapped between the panes
- Worn gaskets, brush seals or a door that has dropped
- Broken hinges, locks or handles
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly.
Surfaces we seal
- Aluminium frames
- Window sills
- Timber windows & doors
- uPVC windows
- Composite doors
- Patio & French doors
Do you need window mastic in Fort Augustus?
Sun, frost and rain wear sealant out. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.
Common reasons people contact us are:
- Cracked internal joints between frame and plaster
- Cracked or shrunken mastic around the frame
- Cold air getting in at the frame edge
- Mastic that is falling out in pieces
In and around Fort Augustus, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
What to look for in a quote
- What guarantee comes with the work
- How much experience the applicator has
- Whether the sealant suits the joint
- What happens if they find a problem under the old sealant
What affects the cost of window mastic
The quote reflects the job in front of us. We take into account:
- The number and length of the joints
- How many rooms, windows or areas are involved
- Access and height
- Working hours on commercial sites
The cost depends on the size of the job, how hard the old material is to remove and access to the work. We give a clear quote before any work starts.
What we need to know
You don’t need to know the technical terms. Just tell us:
- If someone has resealed it before
- Where the job is, and your postcode
- A few pictures by email, if you can
- Whether it’s a home or a business
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear quote for your job. To arrange one, send an email to info@mrmastic.co.uk.
Your questions about window mastic in Fort Augustus
Is Fort Augustus within the area you cover?
Yes, we do. Our work covers the whole of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Can you do window mastic in Fort Augustus?
Yes. We work across all of Scotland, and Fort Augustus is part of that. You can send an email to info@mrmastic.co.uk and let us know what needs doing.
Can I paint over the new sealant?
It depends on the sealant. Some hybrid sealants can be painted; silicone cannot. Tell us if you’re decorating and we will choose accordingly.
Does someone need to be in?
Access is agreed with you when the job is booked. For inside work, that normally means someone being in.
Can new sealant go over the old?
No, and we never do. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Can you quote for more than one area?
Yes. Just list everything you need.
Can resealing stop a draught around my window?
It will if the frame joint is the problem. We check where the draught is before work begins.
Will it make a mess?
We keep the work tidy. We protect what’s around the joints, and the area is left clean when we finish.
What happens if it’s left?
Once mastic fails, rain can get between the frame and the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. Exposed walls in smaller Scottish places take a lot of wind and rain, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk for an honest opinion and a quote.
Why Fort Augustus customers choose us
- Quality sealants from Arbo and Everbuild
- Sanitary silicone with an anti-fungal additive in wet areas
- A sealant colour to suit the surroundings
- Over 20 years’ experience
Read what affects the cost or our reviews.
What we do, step by step
You don’t need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a handful of frames, longer for a whole house in most cases. In smaller Scottish places, parking is normally less of an issue than access and distance. Tell us how to find the property and how to reach the work.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Mention if the joints have been sealed before
- Clear the area around the work
- Let us know if you’ve seen damp or leaks
Get a quote
Call for a quick quote, or email us if that is easier. Tell us about the joints that need doing and we’ll talk you through the work and give you a clear quote.
Read more
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How to look after the new joints
After the cure time, these simple habits help:
- Paint up to the joint, not over it
- Avoid blasting the frames with a pressure washer
- Keep paint and stain on wooden frames in good order
- Air rooms to keep condensation down around windows
Keep the new mastic undisturbed while it cures, following the cure time we give you. Keep jet washers away from the frames.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.