Argyll and Bute · Scotland
Window Mastic in Bowmore
Mastic around window and door frames, sills and patio doors in Bowmore, with a one-year guarantee on every job. Ask us for a quote.
- White mastic on grey or black frames
- Cracked or shrunken mastic around the frame
- Cracked sealant at the sill ends
How we quote for window mastic
We quote each job individually. These are the things that affect it:
- How many rooms, windows or areas are involved
- Any mould that needs treating
- How much old sealant there is and how hard it is to remove
- Working hours on commercial sites
Leaving a failed joint usually makes the job bigger, not smaller. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk for an honest opinion and a quote.
What we need to know
Before you ask for a quote, have a think about:
- The problem you’ve noticed
- The type of property
- The rough size of the job
- Any previous sealing or DIY work
There’s no standard 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.
Window mastic for homes and businesses in Bowmore
A window frame and the wall around it expand and shrink at different rates. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. We are often asked to deal with sealant in the wrong colour for the frame and gaps where the sill meets the wall, across window sills, aluminium frames and uPVC windows.
Mastic can only go onto a dry joint, so outside work in Bowmore depends on the weather. Tell us about access to all the windows and doors, upstairs included.
Big or small, it’s backed by our one-year guarantee in Bowmore and across Argyll and Bute.

- Where
- Bowmore (PA43)
- Region
- Argyll and Bute
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Should I try it myself first?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
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 doesn’t work out, we can still put it right.
Landlord and commercial work in Bowmore
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will give you a quote.
Bowmore: your questions answered
Is window mastic in a coastal place like Bowmore any different?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. Walls facing the sea are normally the first to need attention.
Is Bowmore in your area for window mastic?
Yes. Our work covers the whole of Scotland, and Bowmore is part of that. You can send an email to info@mrmastic.co.uk and tell us what needs doing, and we will send you a clear quote.
How do I get a quote for window mastic in Bowmore?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before we start.
Are you an approved applicator?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
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.
Do I have to be there?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you do not need to watch us work.
Where do you work from?
We work from Crawley. We cover Bowmore and the rest of Argyll and Bute.
How long does it take to reseal the windows on a house?
It depends on access, the old mastic and the size of the frames. You will know the timing when we quote.
What window mastic looks like in Bowmore
Bowmore 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. The west of Scotland is wetter than the east, which means the mastic around window and door frames has to cope with a lot of rain.
Whether the job is in Bowmore itself or nearby, the right material for each joint matters as much as a neat finish.
Bowmore (Gaelic: Bogh Mòr) is in Argyll and Bute. Homes, rented property, offices and hotels in Bowmore can book us for window mastic. Every job comes with our 12-month guarantee. Bowmore is one of 118 towns and villages in Argyll and Bute where we work. For nearby work, see our Glasgow page, about 78 miles away.
We work across PA43 for window mastic. Streets in the area include High Street, Main Street and The Square, and we cover them all. Close by, we work in Port Charlotte (4 miles west), Keills (8 miles north-east), Imeraval (9 miles south), Port Askaig (9 miles north-east) and Port Ellen (10 miles south-east). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
What’s near Bowmore
Nearby you will also find Islay Hospital (less than half a mile east) and Museum of Islay Life (3.8 miles west). The countryside around Bowmore includes Loch Skerrols.
What we do, step by step
Once we’re on site, we check the joints match what you told us. If we find something unexpected, we talk it through with you first. Most jobs then take anything from an hour or two to a full day, depending on how many frames there are. Somewhere like Bowmore may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Tell us about access, such as stairs, a lift or high-level joints
- Let us know about earlier repairs to the joints
- For business premises, tell us about site rules or sign-in
Getting a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job, and we’ll take it from there.
Read more
Towns and villages near Bowmore
Other services in Bowmore
Keeping the joints in good condition
A little care helps the new joints last. We recommend:
- Keep drainage slots and sill grooves clear
- Keep paint off silicone joints
- Wipe condensation off the frames
- Do not aim a pressure washer at the joints
Check the drainage slots in the frames aren’t blocked, so water can run away instead of sitting against the joint.
Leaks usually show up in wet, windy weather, but resealing works best in dry conditions. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
When to call us in Bowmore
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, leaving a hairline gap down one side.
Signs it’s time to call us include:
- Gaps left after new windows were fitted
- Cracked sealant at the sill ends
- Cracked internal joints between frame and plaster
- Cracked or shrunken mastic around the frame
In and around Bowmore, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
Comparing quotes
- Which sealant they’ll use, and why
- Whether all the old sealant comes out first
- What happens if the job turns out different
- What insurance they hold
Honest limits
We will always be straight with you, so here’s what sealant can’t fix:
- Rotten timber, which needs a joiner first
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Broken hinges, locks or handles
If you’re not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer before you book.
What we seal
- Patio & French doors
- Aluminium frames
- uPVC windows
- Window sills
- Timber windows & doors
- Composite doors
