Argyll and Bute · Scotland
Black Crofts Window Mastic
We cover Black Crofts for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly.
- Gaps where the sill meets the wall
- Cold air getting in at the frame edge
- Water coming in at the bottom corners of a door
Common problems we fix in Black Crofts
Timber windows bring their own problems. Mastic painted over many times cracks with the paint, and the wood moves with damp as well as heat.
Any of these means the joints need attention:
- Whistling draughts around closed windows
- Mastic that is falling out in pieces
- White mastic on grey or black frames
- Cracked internal joints between frame and plaster
In the older streets around Ardchattan Parish Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Comparing quotes
- How the surfaces are prepared before sealing
- Who turns up on the day
- Is the old sealant removed completely?
- Are they insured?
Window mastic for homes and businesses in Black Crofts
There are two joints on most windows. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. If you are dealing with white mastic on grey or black frames and cracked or shrunken mastic around the frame, we can put it right, on uPVC windows, timber windows & doors and composite doors alike.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
You’re covered for a year from the day we finish. If anything is not right with it, drop us a line at info@mrmastic.co.uk.
- Where
- Black Crofts (PA37)
- Region
- Argyll and Bute
- Cover
- One year on every job
- Price
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
How it works
We keep the work tidy and contained to the area we are working on, so you can carry on as normal. The job usually takes most of a day for a typical house, less for a few frames, and we tell you how long to leave it before we go. Somewhere like Black Crofts may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
Ask for a quote
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To get started, send an email to info@mrmastic.co.uk.
Advice
Should I try it myself first?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
What a professional job adds is preparation and the right product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions.
How the job changes by surface
Composite doors
An exposed front door gets wind-driven rain, and the top and bottom corners tend to fail first. Those corners get the most care.
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. Most leaks start at the bottom corners, so we pay close attention there.
What happens if it’s left?
Failed mastic isn’t a reason to replace sound windows. Where the frames are sound, new mastic usually deals with draughts and leaks at the edges. If we find failed glass units or worn seals, we’ll tell you. Around Black Crofts, water from a failed joint in an older stone home can soak into timber and plaster.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Why choose Mr Mastic in Black Crofts
- A sealant colour to suit the surroundings
- 4.9 on Google from 180+ five-star reviews
- Quality sealants from Arbo and Everbuild
- Fully insured
See our cost guide and our reviews.
Your questions about window mastic in Black Crofts
Does living near the coast affect window mastic in Black Crofts?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. Walls facing the sea are usually the first to need attention.
Do you work for landlords with property near Connel Ferry station?
Yes, we work for landlords and agents. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we will give you a clear quote.
Can you do several jobs on one visit?
Yes. Just list everything you need and you will get one quote.
Does someone need to be in?
That depends on where the joints are. For work indoors, someone needs to let us in.
Where is Mr Mastic based?
Our base is Crawley, with over 20 years’ experience. We work across South East England, London and Scotland.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator.
Is it OK to seal over old sealant?
No. Fresh sealant does not stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Do you come to Black Crofts?
We do. Black Crofts is part of the area we cover, and the service is the same as everywhere else.
Also near Black Crofts
Also in Black Crofts
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.
For anyone letting property in or around Black Crofts, several properties can be quoted together. Send us the addresses and the work at each.
Windows and doors in Black Crofts
Black Crofts 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 is hard on the mastic around window and door frames, especially on the side facing the sea. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional 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.
Black Crofts is about 40 miles north-west of Helensburgh, in Argyll and Bute. Black Crofts gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Across Argyll and Bute, we cover 118 places, and Black Crofts is one of them. Glasgow is on our list too, around 60 miles away.
We work across PA37 for window mastic and the streets around it. Nearby, we also carry out window mastic in Ardchattan (1 mile north-east), North Connel (1 mile south-west), Connel (2 miles south-west), Benderloch (2 miles north-west) and Dunbeg (4 miles south-west). For island and remote addresses, the job takes a little more planning, so let us know when you get in touch.
Landmarks near Black Crofts
Black Crofts’s nearest station is Connel Ferry station, roughly 1.4 miles south-west of the centre. Nearby you will also find Dunstaffnage Castle (3 miles west). For a walk, there’s Lochan Dubh.
What affects the cost of window mastic
Jobs vary more than people expect. The main factors:
- The number and length of the joints
- How easy the joints are to reach
- The type of sealant required
- Working hours on commercial sites
Every job is a little different, so we quote each one individually. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
What we need to know
To make quoting easier, let us know:
- Photos by email, if that is easy
- If someone has resealed it before
- How many joints, rooms or windows are involved
- What the problem is, such as mould, gaps, leaks or cracking
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we’ll talk you through the work.