Argyll and Bute · Scotland
Window Mastic in Dunbeg
Problem with your window and door frames in Dunbeg? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Cold air getting in at the frame edge
- Untidy mastic left by window fitters
- Old mastic that has gone black or come away
What we are called out for in Dunbeg
On timber frames, paint and putty build up around the joint. Old mastic gets painted over and cracks under the paint, and the wood moves with damp as well as heat.
These are the problems we’re asked about most:
- Cracked or shrunken mastic around the frame
- A bead that doesn’t match the frame
- Untidy mastic left by window fitters
- Cracked sealant at the sill ends
For an older house near a landmark such as Dunstaffnage Chapel, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- When the joint can take water or movement
- How much experience the applicator has
- What preparation is included
- Whether they seal over old material or remove it
Window mastic in Dunbeg, done properly
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. Common call-outs are for gaps left after new windows were fitted and rain getting in at the frame or under the sill, on uPVC windows, timber windows & doors and composite doors.
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.
A 12-month guarantee comes as standard, so you are covered after we’ve gone.
- Where
- Dunbeg (PA37)
- Region
- Argyll and Bute
- Guarantee
- 12 months on all our work
- Price
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Also near Dunbeg
Also in Dunbeg
Window mastic in Dunbeg: local notes
Dunbeg is within about 1 mile of 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. Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
For landlords with property near Connel Ferry station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Dunbeg is in Argyll and Bute. Dunbeg gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Dunbeg is one of 118 places in Argyll and Bute we cover. There’s also a page for Glasgow, about 61 miles away.
Work in PA37 works the same way as everywhere else we cover. Window mastic is available to properties on Young Crescent, Castle Road and Stewart Way and the roads around them. Neighbouring places we cover for window mastic include Ganavan (1 mile south-west), North Connel (2 miles north-east), Dunollie (2 miles south-west), Connel (2 miles east) and Oban (3 miles south). If you are somewhere remote, a little more planning is needed.
Near you in Dunbeg
The nearest railway station is Connel Ferry station, about 2.5 miles east of the centre. Other landmarks nearby include Oban Museum (2.2 miles south-west) and Lorn and Islands Hospital (3.4 miles south). Not far away are Lochan Dubh.
How the visit works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a few hours for a handful of frames, longer for a whole house, and the area is left clean. Outdoor work around Dunbeg depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Work indoors isn’t 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.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Before we arrive
- Tell us about access, such as stairs, a lift or high-level joints
- Mention any sign-in or site rules at work premises
- Let us know if you’ve seen damp or leaks
Getting a quote
For window mastic in Dunbeg, email us 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 work begins.
Related advice
Should I try it myself first?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and getting the depth right matters as much as the look.
Dunbeg questions
Do you cover smaller places like Dunbeg?
Yes. Dunbeg is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Does living near the coast affect window mastic in Dunbeg?
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.
Can resealing stop a draught around my window?
If the draught is coming in around the frame, yes. If it’s through the window’s own seals or a hinge, that is a different fix, and we will say so.
Is the new sealant paintable?
Silicone generally won’t take paint. If you plan to paint, tell us first and we can use a paintable sealant where it suits the joint.
What does window mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, email us at info@mrmastic.co.uk and tell us what needs doing and where.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Do you have sealant for grey or black windows?
Yes, in most cases. Tell us the frame colour when you get in touch and we will match it as closely as we can.
How long before the joint can be used?
It depends on the product and the conditions. Before we leave, we will tell you the cure time.
What happens if it’s left?
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’ll say so. In a place like Dunbeg, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
A few things move the cost up or down: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why book with us
- We agree the colour with you first
- White, clear, grey or coloured to suit, where the product allows
- We never seal over old sealant
- Full insurance on every job
Take a look at our cost guide and our reviews.
Quotes for window mastic in Dunbeg
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Any working-time requirements on site
- Whether the work is at height
- Which sealant suits the joint
- Any mould that needs treating
What it costs depends on the size of the job, how much old material has to come out and access to the work. We give a clear quote before any work starts, so you know where you stand.
Asking for a quote
To help us quote quickly, please include:
- The address or postcode of the job
- The type of property
- How many joints, rooms or windows are involved
- How we’d reach the joints
We quote each job on its own. Simply send an email to info@mrmastic.co.uk and describe the job.
How to look after the new joints
So the new joints stay in good condition:
- Ventilate rooms so frames don’t stay wet inside
- Do not use solvent cleaners on the joint
- Look round the frames every year or so
- Clear any debris from frame drain holes
A yearly look round the frames is enough. Small splits are simple to catch before they leak, and if anything looks wrong, just drop us a line at info@mrmastic.co.uk.
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.
Landlord and commercial work in Dunbeg
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.