Argyll and Bute · Scotland
Sand mastic for sash & case windows in Keills, Argyll and Bute
Sand mastic for Keills, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
- Mastic that needs renewing before redecorating
How we handle sand mastic in Keills
We renew sand mastic around sash windows and doors set in stone or brick. The old mastic is raked out, and new mastic is applied and shaped by hand. If you’re dealing with mastic dropping out of the joint and cement or filler used on old window joints that has cracked, we can help, whatever the surface.
Mastic can only go onto a dry joint, so outside work in Keills depends on the weather, and longer journeys are planned in advance. Tell us about access to all the windows and doors, upstairs included.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we will sort it.
- Place
- Keills (PA46)
- Wider area
- Argyll and Bute
- Cover
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Looking after it afterwards
Simple care keeps the joints in good condition. We recommend:
- Get any rot dealt with first
- Make sure water runs off the sill
- Avoid heavy scraping on the mastic joint
- Look over the window mastic once a year
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look before trying a quick fix.
Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.
Sand mastic in Keills: local notes
Keills 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. Both are hard on the mastic around older windows and doors, 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.
In and around Keills, as anywhere, good sand mastic starts with a clean, dry, properly prepared joint.
Keills is in Argyll and Bute. For sand mastic in and around Keills, please drop us a line at info@mrmastic.co.uk for a quick quote. We cover Argyll and Bute from our Crawley base. We cover 118 towns and villages across Argyll and Bute. For nearby work, see our Glasgow page (72 miles or so).
Postcode districts we cover here for sand mastic: PA46. Nearby, we also carry out sand mastic in Port Askaig (1 mile north-east), Bunnahabhain (3 miles north), Craighouse (7 miles east), Bowmore (8 miles south-west) and Port Charlotte (12 miles south-west). Remote and island addresses need a little more planning, so please mention your location when you send an email to info@mrmastic.co.uk.
Local landmarks in Keills
A little further out are Finlaggan Castle (1.8 miles west). Open spaces near Keills include Loch Ballygrant and Beinn Dubh.
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours per window, depending on the condition of the joints from start to finish. In smaller Scottish places, parking is generally less of an issue than access and distance. Tell us how to find the property and how to reach the work.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- Large voids are packed out first, so the mastic is not too thick.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- Mention any leaks or damp you’ve noticed
- Where the joints are inside, avoid wetting them before we arrive
Getting a quote
Want a quote for sand mastic? Please email us at info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Read more
How we quote for sand mastic
Some jobs are bigger than they look, and some smaller. The main factors:
- The product the joint needs
- Whether there’s mould to deal with
- Whether the work is at height
- The size of the job
We don’t show prices on the website, because the cost depends so much on the job itself. Call for a quick quote.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Roughly how big the job is
- Whether it’s a home or a business
- Any previous sealing or DIY work
- Pictures of the joints, sent by email
To get a quote, drop us a line at info@mrmastic.co.uk with the location and a short description of the problem. You’ll have a clear quote before we start.
Honest limits
To be straight with you, some problems need a different trade:
- Sashes that need overhauling
- Broken panes
- Crumbling stone or brickwork round the window
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
What we seal
- Stone surrounds
- Tenement windows
- Timber door frames
- Brick reveals
- Period & listed homes
- Sash and case windows
Places near Keills
More services for Keills
What we are called out for in Keills
Shallow joints are a common cause. Mastic that is too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Most people get in touch when they notice something like this:
- Crumbling sand mastic round a window
- Mastic round period door frames that has failed
- Silicone on a period window that looks wrong
- Gaps where the frame meets the masonry
Whether the job is in Keills itself or nearby, the right material for each joint matters as much as a neat finish.
Comparing quotes
- How long the guarantee is
- Whether they’re fully insured
- What happens if they find a problem under the old sealant
- Which colour the sealant will be
DIY versus a professional finish
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so just mention it when you contact us.
Keills: your questions answered
Do you cover Keills for sand mastic?
Yes, Keills is within the area we cover. We work across all of Scotland. You can send an email to info@mrmastic.co.uk and let us know what needs doing.
Does living near the coast affect sand mastic in Keills?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. The right product, a clean joint and the right depth all help it cope.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected, and the area is left clean when we finish.
Can you replace silicone on a period window with sand mastic?
Yes, we do this often. All the old silicone is removed first so the mastic beds in well.
Do I need to be at home?
That depends on where the joints are. Inside work needs someone to give us access.
Do you work for landlords and businesses?
Yes, regularly. Several properties can be quoted together.
Can you do several jobs on one visit?
Yes, we can. Several rooms, windows or areas can go on one quote.
Do you take out the old sealant first?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Landlord and commercial work in Keills
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.