Highland · Scotland
Window Mastic in Lochinver
Mastic around window and door frames, sills and patio doors for homes and businesses in Lochinver and across Highland. ARBOMaster approved applicators, fully insured, with a 12-month guarantee.
- Cracked or shrunken mastic around the frame
- Draughty joints inside around the window
- Water coming in at the bottom corners of a door
Should I try it myself first?
If you’ve already had a go yourself, that’s fine. We cut it out and start again.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Window mastic for homes and businesses in Lochinver
Around Lochinver we seal all kinds of frames: from uPVC casements to timber and aluminium, plus patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. If you’re dealing with rushed sealant from a window installation and cold air getting in at the frame edge, we can help.
Many older Scottish homes still have timber windows set into stone walls. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
We stand behind the work with a one-year guarantee.
- Place
- Lochinver (IV27)
- Wider area
- Highland
- Guarantee
- One year on every job
- Quote
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Lochinver homes and the weather
Lochinver is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around window and door frames, especially on the side facing the sea. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
For jobs in and around Lochinver, choosing the right material for each joint is as important as a tidy finish.
Lochinver (Gaelic: Loch an Inbhir) is in Highland. Across the IV27 area, we cover window mastic for homes and businesses. Our Highland coverage runs to 253 places, Lochinver among them.
Jobs for window mastic in IV27 is quoted and booked the same way as anywhere else. Window mastic is available to properties on Inver Terrace, Kirk Road and Inver Park. We also cover Stoer (5 miles north-west), Stor (5 miles north-west), An Druim Beag (6 miles north), Achiltibuie (10 miles south) and Scourie More (13 miles north). For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
Landmarks near Lochinver
For a walk, there’s Loch an Ordain.
The process
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. In total, it normally takes most of a day for a typical house, less for a few frames. Outside jobs in Lochinver need a dry day, because sealant will not bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors is not affected.
- We check each frame and agree which ones need doing.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
How to prepare
- Mention any tricky access
- Clear items away from the joints we’re working on
- Plan for the work area to be out of bounds to pets and children
How to get a quote
For window mastic in Lochinver, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you’ll get a clear quote before any work starts.
Read more
Your questions about window mastic in Lochinver
Does living near the coast affect window mastic in Lochinver?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you cover smaller places like Lochinver?
Yes, we do. We work across all of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Will new mastic stop draughts?
It will if the frame joint is the problem. We find where the air is coming from before we reseal.
Where are you based?
We work from Crawley. We cover Lochinver and the rest of Highland, along with the rest of our area.
Can you quote for more than one area?
Yes, and it often makes sense. Combining jobs makes good use of the visit.
How long will my window job take?
The work takes a morning for a couple of windows and a door. Access and how stubborn the old mastic is affect the time most.
Will there be a smell?
That depends on the sealant. Some smell for a while, some hardly at all.
How long should I leave it?
Many sealants skin over quickly but take longer to cure fully. We will give you the cure time for the product we used before we leave.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Avoid harsh chemicals near the mastic
- Make sure the drainage slots aren’t blocked
- Wipe condensation off the frames
- Do not paint over the silicone
Check the drainage slots in the frames are not blocked, so rain drains out rather than building up at the sealant.
Signs to watch for: split or missing mastic, gaps, damp patches inside or black mould on the reveal. Any of these is worth a call.
When to call us in Lochinver
Joint shape matters as much as the product. A skim of sealant over a wide gap soon tears, and a gap filled solid can’t flex. That’s what backing rod is for.
Common reasons people contact us include:
- Cracked sealant at the sill ends
- Whistling draughts around closed windows
- Gaps between the frame and the inside reveal
- A bead that does not match the frame
Around Lochinver, as everywhere, window mastic is only as good as the preparation behind it.
Questions to ask before booking
- How the joint is cleaned and prepared
- How much experience the applicator has
- What happens if the job turns out different
- What insurance they hold
When something else is needed
Before you book, it’s worth knowing the limits:
- Broken hinges, locks or handles
- A failed sealed unit that has misted up
- A frame that has rotted at the joint
If you’re not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer before booking.
Surfaces we seal
- Composite doors
- Patio & French doors
- uPVC windows
- Aluminium frames
- Timber windows & doors
- Window sills
Why act early in Lochinver
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that is needed. Problems with the glass or gaskets are for a window company, and we will say so. 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.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we will go through it with you.
What you get with us
- More than 20 years in sealant work
- We never seal over old sealant
- Anti-fungal silicone where joints get wet
- Arbo and Everbuild products
Read what affects the cost and customer reviews.
Also near Lochinver
More services for Lochinver
Quotes for window mastic in Lochinver
Jobs vary more than people expect. What affects the quote:
- The type of sealant required
- How many rooms, windows or areas are involved
- How much old sealant there is and how hard it is to remove
- The number and length of the joints
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference.
What to tell us for a quote
There’s no need for technical detail. It helps if you can tell us:
- Any access issues, like height or stairs
- The rough size of the job
- Where the job is, and your postcode
- A few pictures by email, if you can
Want a quote for window mastic? Please email us at info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.