Na h-Eileanan Siar · Scotland
Window & door mastic in Lochboisdale, Na h-Eileanan Siar
Window mastic for Lochboisdale and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Whistling draughts around closed windows
- Sealant in the wrong colour for the frame
- Mastic that is falling out in pieces
What we can’t put right
It helps to know what we can’t do:
- Damp coming through the wall itself rather than the frame joint
- Worn gaskets, brush seals or a door that has dropped
- Misting between the panes of a double-glazed unit (that needs a new unit)
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think.
Surfaces we seal
- Window sills
- Aluminium frames
- uPVC windows
- Timber windows & doors
- Composite doors
- Patio & French doors
How we handle window mastic in Lochboisdale
From a single sill to a whole house of windows, the work is priced before anything is done. To get one, email us at info@mrmastic.co.uk with the number of frames and any access details. We work on window sills, composite doors and aluminium frames, and people most often call us about white mastic on grey or black frames and mastic that’s falling out in pieces.
In and around a place like Lochboisdale, homes range from older stone-built cottages to newer houses. Exposed frames and sills take the full force of wind-driven rain, so the mastic there works hard.
We stand behind the work with a one-year guarantee, so you are not left on your own once the job is done.
- Place
- Lochboisdale (HS8)
- Wider area
- Na h-Eileanan Siar
- Cover
- A year, on every job
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Keep solvents and bleach off the sealant
- Use gentle cleaners on frames and sealant
- Check the mastic once a year
- Keep drainage slots and sill grooves clear
Keep the new mastic undisturbed while it cures, for as long as we advise. Don’t point a pressure washer at the joints.
Leaks generally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
What affects the quote in Lochboisdale
Call for a quick quote. The main things that affect it are:
- Whether there’s mould to deal with
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- How easy the joints are to reach
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
Helping us quote
There’s no need for technical detail. Just tell us:
- Roughly how big the job is
- What’s wrong with the joints now
- Access, such as stairs, a lift or height
- Whether it has been sealed before
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved before giving you a price.
Signs you need window mastic in Lochboisdale
A lot of older mastic was never designed to stay flexible. Once it has hardened, the frame’s movement tears it from the wall, and a gap opens along one edge.
Most people get in touch after spotting something like this:
- Draughty joints inside around the window
- Black, perished sealant on frames
- Leaking joints at the ends of sills
- Untidy mastic left by window fitters
In and around Lochboisdale, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
What your quote should include
- The length of the guarantee
- What preparation is included
- Whether you can choose the colour
- Are they insured?
Towns and villages near Lochboisdale
Also in Lochboisdale
The process
At the end, we look at the finished work together. The visit itself generally takes anything from an hour or two to a full day, depending on how many frames there are, depending on the size of the job. For a place like Lochboisdale, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- We fit backing rod in deep gaps so the sealant is the right depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Finally we tidy up and check each joint.
Before we arrive
- Mention any tricky access
- For indoor joints, keep the area dry beforehand if you can
- On commercial sites, let us know about site rules
Ask for a quote
We don’t publish a price list, because every job is different. Instead, your job gets its own clear quote. To get started, drop us a line at info@mrmastic.co.uk.
Advice
DIY sealant or a professional job?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Lochboisdale homes and the weather
Lochboisdale 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’s hard on the mastic around window and door frames, especially on the side facing the sea. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Whether the job is in Lochboisdale itself or nearby, the right material for each joint matters as much as a neat finish.
Lochboisdale is in Na h-Eileanan Siar. If you need window mastic in Lochboisdale, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We cover Na h-Eileanan Siar from our Crawley base, Lochboisdale included. Across Na h-Eileanan Siar, we cover 87 places, and Lochboisdale is one of them.
Here we cover the HS8 postcode area for window mastic. Local streets include Braehead, Calabhaigh and Kenneth Terrace. Neighbouring places we cover for window mastic include Loch Baghasdail (1 mile north), Dalabrog (2 miles north-west), Rubha Ban (5 miles south), Eòlaigearraidh (9 miles south-west) and Cuidhir (12 miles south-west). Remote and island addresses need a little more planning, so please mention your location when you drop us a line at info@mrmastic.co.uk.
Landmarks near Lochboisdale
Nearby you’ll also find Calvay Castle (1.8 miles east). For a walk, there’s Beinn Ruigh Choinnich and Loch Stulaval.
Questions from Lochboisdale
Can you do window mastic in Lochboisdale?
Yes, Lochboisdale 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, and we will send you a clear quote.
Do you cover smaller places like Lochboisdale?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland, including the islands, where work is planned around ferry crossings. Just mention lanes, gates or anything else about the route when you book.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Can you do upstairs windows?
Yes, as long as they can be reached safely. Tell us about access when you get in touch and we’ll plan for it.
What should I tell you?
Where the job is, what the problem is and roughly how big it is. If you can, email a few photos.
Can you work on commercial sites?
Yes. We can plan bigger jobs in stages to suit the site.
Are you fully insured?
Yes. We’re fully insured.
Is there any odour?
That depends on the sealant. Some smell for a while, some hardly at all, and any smell fades as they cure.
Different surfaces, different methods
Timber windows & doors
Where timber has rotted at the joint, it needs repairing first. If we find rot, we’ll tell you before going ahead, as that’s a job for a joiner.
Composite doors
Draughts round the door leaf normally come from worn seals or adjustment, not the mastic. We seal the frame and let you know about anything else.