Highland · Scotland
Window Mastic in Strathy
Window mastic for Strathy and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Black, perished sealant on frames
- Water coming in at the bottom corners of a door
- Untidy mastic left by window fitters
About our window mastic in Strathy
Homes in Strathy have every kind of window: from uPVC casements to timber and aluminium, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. We work on patio & French doors, composite doors and timber windows & doors, and common reasons people get in touch are draughty joints inside around the window and gaps where the sill meets the wall.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
All our work is covered by our one-year guarantee.
- Where
- Strathy (KW14)
- Region
- Highland
- Guarantee
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
How we quote for window mastic
For a quick quote, just ask. The main things that affect it are:
- Any mould that needs treating
- The type of sealant required
- How easy the joints are to reach
- Working hours on commercial sites
We do not show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Asking for a quote
You do not need to know the technical terms. It helps if you can tell us:
- Any previous sealing or DIY work
- Whether it’s a home or a business
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
It all starts with a short chat. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, send an email to info@mrmastic.co.uk.
How the job changes by surface
uPVC windows
The frame is cleaned with a product that won’t harm the plastic, then the sealant goes in between frame and wall.
Timber windows & doors
Timber moves with moisture as well as heat, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Strathy questions
Is window mastic in a coastal place like Strathy any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
Do you cover Strathy for window mastic?
Yes, Strathy is within the area we cover. We work across all of Scotland. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing.
Where do you work from?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Can you reach windows above the ground floor?
Yes, where it’s safe. For high or awkward windows, we will tell you what access is needed.
Can I paint over the new sealant?
Silicone generally will not take paint. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.
Do you have insurance?
Yes. We’re fully insured for every job we do.
Can landlords and businesses book you?
Yes, often. Several properties can go on one quote.
Do I have to be there?
That depends on where the joints are. For work indoors, someone needs to let us in, and for outside work we’ll agree access with you when we book.
What happens if it’s left?
Running fresh sealant over the old joint is tempting, but it will not grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. In a place like Strathy, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
What it costs depends on the size of the job, how hard the old material is to remove and access to the work. You’ll have a clear quote before any work starts, so you know where you stand.
Why book with us
- Old sealant always removed completely
- 4.9 on Google from 180+ five-star reviews
- Approved under the ARBOMaster scheme
- Sanitary silicone with an anti-fungal additive in wet areas
Work for landlords, hotels and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Housing providers, facilities teams and property managers book us too in Strathy and across Highland. Several sites can go on one quote, and we’re fully insured for the work.
What window mastic looks like in Strathy
Strathy is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
For jobs in and around Strathy, choosing the right material for each joint is as important as a tidy finish.
Strathy is about 17 miles west of Thurso, in Highland. Strathy gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 253 places across Highland.
Postcode districts we cover here for window mastic: KW14. Close by, we work in Portskerra (3 miles east), Melvich (3 miles east), Reay (8 miles east), Am Blàran Odhar (8 miles west) and Forss (13 miles east). Island and remote addresses take a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
Landmarks near Strathy
Green spaces nearby include Lochan Ealach.
How the visit works
We bring everything the job needs with us, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. Most jobs take most of a day for a typical house, less for a few frames. Around Strathy, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- Frame and wall are cleaned and must be dry before sealing.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Mention any parking rules near the property
- Tell us about access, such as stairs, a lift or high-level joints
- Plan for the work area to be out of bounds to pets and children
Get a quote
For window mastic in Strathy, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and you will get a clear quote before any work starts.
Related advice
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Other services in Strathy
What we are called out for in Strathy
Sun, frost and rain wear sealant out. Sunlight dries the surface out, until it loses its stretch and starts to crack.
Any of these means the joints need attention:
- Leaking joints at the ends of sills
- Rushed sealant from a window installation
- Whistling draughts around closed windows
- Cracked internal joints between frame and plaster
In and around Strathy, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
Before you book anyone
- Is the old sealant removed completely?
- When the joint can take water or movement
- How the surfaces are prepared before sealing
- Who does the work, and how experienced they are