Highland · Scotland
Gergask Window Mastic
Window mastic for Gergask, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Mastic that has split away from the wall
- Cracked sealant at the sill ends
- Whistling draughts around closed windows
How we handle window mastic in Gergask
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty and quietens the whistle on windy days. If the draught is through the window seals instead, we’ll tell you. Typical jobs include mastic that has split away from the wall and gaps between the frame and the inside reveal, across window sills, timber windows & doors and patio & French doors.
Mastic can only go onto a dry joint, so outside work in Gergask depends on the weather, and longer journeys are planned in advance. Tell us about access to all the windows and doors, upstairs included.
Whatever the size of the job, it’s backed by our one-year guarantee in Gergask and across Highland.
- Where
- Gergask (PH20)
- Region
- Highland
- Guarantee
- A year, on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
FAQs for Gergask
Is window mastic in Gergask guaranteed?
Every job comes with our 12-month guarantee, wherever it is. We are also fully insured and ARBOMaster approved.
Do you cover Gergask for window mastic?
Yes, Gergask is within the area we cover. Our work covers the whole of Scotland. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we will give you a clear quote.
Which products do you use?
The product depends on the job: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. We use products from Arbo and Everbuild.
Can you seal the gap between the frame and the plaster indoors?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
What information do you need?
Where the job is, what the problem is and roughly how big it is. If you can, email a few pictures.
Do you take out the old sealant first?
Yes. All of the old material is cut out and the joint cleaned.
Can landlords and businesses book you?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
Can tenants book the work?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
The process
We bring everything the job needs with us, so there’s nothing for you to buy. Once we’ve agreed what’s being done, the area is protected and the work begins. It normally takes a morning for a couple of windows and a door. Outdoor work around Gergask depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Tell us about any water getting in
- Let us know about stairs, lifts or work at height
- Mention if the joints have been sealed before
How to get a quote
Want a quote for window mastic? Please drop us a line at info@mrmastic.co.uk and tell us about the job. We’ll explain what we’d do and send you a clear quote before we start.
Related advice
Windows and doors in Gergask
Gergask is in the west of Scotland, which is wetter than the east, so there’s plenty of rain for the mastic around window and door frames to keep out. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
In the older streets around Laggan Parish Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Gergask is about 31 miles south of Inverness, in Highland. Gergask gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. Our Highland coverage runs to 253 places, Gergask among them. Our Dundee page covers work nearby, about 62 miles away.
Here we cover the PH20 postcode area for window mastic. Other places close to Gergask include Laggan (1 mile south-east), Etteridge (5 miles east), Dalwhinnie (6 miles south), Newtonmore (7 miles north-east) and Kingussie (10 miles north-east). If you are somewhere remote, the job takes a little more planning.
Local landmarks in Gergask
A little further out are Cluny Castle (2.1 miles east). The countryside around Gergask includes Loch Caoldair and Creag Bhuidhe.
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Keep jet washers away from the mastic
- Wash the frames with mild soapy water
- Wipe condensation off the frames
- Make sure the drainage slots are not blocked
Check the drainage slots in the frames are not blocked, so water can run away instead of sitting against the joint.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.
What we are called out for in Gergask
Mastic ages in the weather. Sunlight dries the surface out, and over the years it loses its give, cracks and comes away.
The most common problems we see are:
- Old mastic that has gone black or come away
- Damp patches on the reveal after heavy rain
- Untidy mastic left by window fitters
- Mastic that has split away from the wall
In and around Gergask, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- How the surfaces are prepared before sealing
- Whether VAT is included
- Is the old sealant removed completely?
- Which colour the sealant will be
Places near Gergask
Also in Gergask
Landlords, agents and businesses in Gergask
We work for landlords and agents as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
For anyone letting property in or around Gergask, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.
When something else is needed
A few problems are outside what sealant work can do:
- Damp problems in the wall away from the window
- Broken hinges, locks or handles
- Soft or decayed wood in the frame
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly.
Surfaces we seal
- Patio & French doors
- Aluminium frames
- Timber windows & doors
- Window sills
- uPVC windows
- Composite doors
Quotes for window mastic in Gergask
Some jobs are bigger than they look, and some smaller. The main factors:
- The old material and how stubborn it is
- The type of sealant required
- How easy the joints are to reach
- How much there is to do
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are unsure, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
What to tell us for a quote
When you contact us, these details help:
- A few photos by email, if you can
- The address or postcode of the job
- Access, such as stairs, a lift or height
- The problem you’ve noticed
To get a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You will have a clear quote before any work starts.
Why it’s worth doing now in Gergask
Working on frames from a ladder with a sealant gun is not easy, especially on upper floors. We cut out properly, back deep gaps and tool every joint neatly, in a sealant suited to the wall. Around Gergask, water from a failed joint in an older stone home can soak into timber and plaster, which is a far bigger job than the sealant.
Combining jobs into one visit usually makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll give you a clear quote for the lot.
What you get with us
- 180+ five-star Google reviews
- Approved under the ARBOMaster scheme
- Every job guaranteed for a year
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at our cost guide or customer reviews.