Na h-Eileanan Siar · Scotland
Glazing & conservatory sealant in Sandwick, Na h-Eileanan Siar
Problem with your glazing joints in Sandwick? We cut out the old, prepare the joints and apply the right sealant, with a one-year guarantee.
- Water getting into a conservatory at the joints
- Silicone pulling away from the glass
- Drips on the inside of a conservatory window
Windows and doors in Sandwick
Sandwick is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on glazing joints and frame seals, especially on the side facing the sea. Work on the islands has to be planned around ferry crossings and the weather, so give us as much notice as you can.
In and around Sandwick, as anywhere, good glazing silicone starts with a clean, dry, properly prepared joint.
Sandwick is about 1 mile south-east of Stornoway, in Na h-Eileanan Siar. For glazing silicone in and around Sandwick, it’s easy to get a quote: please send an email to info@mrmastic.co.uk. We cover Na h-Eileanan Siar from our Crawley base. Our Na h-Eileanan Siar coverage runs to 87 places, and Sandwick is one of them.
Postcode districts we cover here for glazing silicone: HS1 and HS2. If you need glazing silicone at a property on Stoneyfield, East Street and Olivers Brae or anywhere close by, we can help. If you are just outside Sandwick, we cover Plasterfield (1 mile north), Sanndabhaig (1 mile east), Steinis (1 mile north), Stornoway (1 mile north-west) and Branahuie (1 mile east). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Near you in Sandwick
Nearby you’ll also find Western Isles Hospital (1.5 miles north-west) and Lewis Loom Centre (1.3 miles west). For a walk, there’s Loch Àirigh na Lic.
How we handle glazing silicone in Sandwick
We do not replace glass and a misted double-glazed unit needs a glazier. Our work is the sealant joints and that is often where the water gets in. If you have split or lifting silicone on glass and failed joints on frameless glass, we can help, whatever the surface.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
Big or small, it’s backed by our 12-month guarantee in Sandwick and across Na h-Eileanan Siar.
- Where
- Sandwick (HS1, HS2)
- Wider area
- Na h-Eileanan Siar
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What sealant work can’t fix
New sealant cannot fix everything, and we’d rather say so up front. Sealant will not put right:
- Failed flashing around a conservatory
- Glass that needs replacing
- Condensation trapped between two panes
If in doubt, email us at info@mrmastic.co.uk and we will say what we think.
Surfaces we seal
- Conservatory frames
- Glass-to-glass joints
- Rooflights
- Glass balustrade bases
- Shower screens
- Glass-to-frame joints
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
How the visit works
There isn’t much for you to do on the day. Show us the job and we will take it from there. The work itself takes anything from an hour or two to most of a day, depending on the size of the job from start to finish. Outside jobs in Sandwick 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. Indoor work goes ahead whatever the weather.
- We find where water is getting in and check whether it’s a sealant joint.
- We cut out the failed silicone, taking care of the glass and frame.
- We clean the joint with a solvent that suits the glass and frame.
- We apply a neutral-cure glazing silicone and tool it smooth.
- The finished joints are checked and, where it’s safe, tested with water.
Before we arrive
- Move anything stored near the joints
- Keep children and pets away from the work area
- Where the joints are inside, avoid wetting them before we arrive
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, email us at info@mrmastic.co.uk.
Advice
When to call us in Sandwick
Silicone will not bond to a dirty surface. Where the joint wasn’t cleaned and degreased, the bead can peel away early.
Signs it’s time to call us include:
- Cracked silicone between glass panels
- Conservatory leaks at frame and glazing joints
- New silicone smeared over old sealant
- Water tracking down the inner face of the glass
In the older streets around Stornoway High Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Questions to ask before booking
- Whether VAT is included
- Which colour the sealant will be
- Whether all the old sealant comes out first
- What happens if the job turns out different
Why act early in Sandwick
Replacing windows or a shower screen isn’t needed for a failed joint. Sound glass and frames normally just need resealing, and we will tell you if that is not the case. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why choose Mr Mastic in Sandwick
- 180+ five-star Google reviews
- Every job guaranteed for a year
- White, clear, grey or coloured to suit, where the product allows
- Fully insured
See our cost guide and what customers say.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Act on drips or damp patches early
- Look over the glazing joints once a year
- Keep harsh solvents off the silicone
- Stick to mild cleaners on glass
Use mild cleaners on and around the silicone. Harsh solvents may damage the bead.
Shower screen leaks can go unnoticed. Water can soak into the floor or reach the room below before you spot it.
How the job changes by surface
Glass balustrade bases
Outdoor balustrade joints face the weather. A sound sealant joint keeps them tidy and dry.
Rooflights
We reseal the glazing joints on rooflights. If the leak is from the roof around it, a roofer needs to look.
Nearby places to Sandwick
More services for Sandwick
Sandwick questions
Do you cover smaller places like Sandwick?
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.
Does living near the coast affect glazing silicone in Sandwick?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. Walls facing the sea are usually the first to need attention.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little.
What does glazing silicone cost?
It depends on the job, so we quote each one individually. For a quick quote, send an email to info@mrmastic.co.uk with a short description of the job.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
Do you have insurance?
Yes. We’re fully insured for domestic and commercial work.
Are you ARBOMaster approved?
Yes. We hold ARBOMaster approved applicator status, and we’re fully insured.
Can I add another job to the visit?
Of course. Combining jobs makes good use of the visit.