South Lanarkshire · Scotland
Greenwall Window Mastic
Professional window mastic in and around Greenwall, with old sealant always removed completely and a 12-month guarantee.
- Water coming in at the bottom corners of a door
- Hard, cracked sealant around windows
- Sealant in the wrong colour for the frame
Your questions about window mastic in Greenwall
Can you help a landlord with a rental near Fauldhouse station?
Yes, landlords and agents are among the people we work for, and several properties can be quoted together. Just send an email to info@mrmastic.co.uk with the address and what needs doing, and we’ll give you a clear price.
Is Greenwall in your area for window mastic?
Yes. Our work covers the whole of Scotland, and Greenwall is part of that. Just email us at info@mrmastic.co.uk with a few details of the job, and we’ll send you a clear quote.
Do you work on first-floor windows?
Yes, as long as they can be reached safely. Let us know about access when you ask for a quote and we’ll plan for it.
Are you fully insured?
Yes. We’re fully insured for every job we do.
Do I need to be at home?
It depends on the job. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
Is it worth trying it myself?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
How long does it take to reseal the windows on a house?
A handful of frames is a short visit, while a whole house takes longer. You will get a timescale with the quote.
How do I get a quote for window mastic in Greenwall?
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.
How we handle window mastic in Greenwall
The mastic around a window or door seals the gap between the frame and the wall. When it cracks, hardens or pulls away, draughts and rain get in. The old mastic is removed and the joint resealed with a flexible exterior sealant. We are often asked to deal with cracked internal joints between frame and plaster and gaps left after new windows were fitted, on composite doors, window sills and timber windows & doors.
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.
The work is covered for a year after we finish. If anything isn’t right with it, email us at info@mrmastic.co.uk.
- Place
- Greenwall (ML11)
- Wider area
- South Lanarkshire
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Common problems we fix in Greenwall
Joints that are too thin or too deep fail early. A thin smear across a wide gap has nothing to it, while a joint packed solid can’t stretch. That’s what backing rod is for.
It’s worth asking for a quote if you see:
- Untidy mastic left by window fitters
- Cold air getting in at the frame edge
- White mastic on grey or black frames
- Draughty joints inside around the window
If you let a flat or house near Fauldhouse station, cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Questions to ask before booking
- What guarantee comes with the work
- What happens if the job turns out different
- When the joint can take water or movement
- Which sealant they’ll use, and why
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a morning for a couple of windows and a door. Somewhere like Greenwall 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.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Let us know about earlier repairs to the joints
- Move anything stored near the joints
- Mention any leaks or damp you’ve noticed
How to get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and add photos by email if you can.
Read more
Leave it or put it right?
If you’re painting or rendering, reseal at the same time. Fresh joints finish the job neatly, and it’s easier while the walls are being worked on anyway. In an older home around Greenwall, damp from a failed joint can get into timber and plaster.
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Why Greenwall customers choose us
- You choose the colour before work begins
- Sanitary silicone with an anti-fungal additive in wet areas
- Tidy, careful work
- We are fully insured
Can I do it myself?
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.
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.
When something else is needed
In fairness, some problems need a different trade:
- A frame that has rotted at the joint
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Damp problems in the wall away from the window
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think before you book.
Joints and surfaces we work on
- Aluminium frames
- Patio & French doors
- uPVC windows
- Composite doors
- Timber windows & doors
- Window sills
For landlords and businesses
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance that we can handle for you.
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Also near Greenwall
More services for Greenwall
Different surfaces, different methods
Aluminium frames
Metal frames expand in the sun and are often slim, with little room for error. A neat, narrow bead in a colour to match keeps the clean look.
uPVC windows
The frame is cleaned with a product that won’t harm the plastic, then the new bead is laid against the frame and the wall.
What window mastic looks like in Greenwall
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that. Sash and case windows are common in older Scottish homes, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
Around Greenwall, as everywhere, window mastic is only as good as the preparation behind it.
Greenwall is about 6 miles north-east of Carluke, in South Lanarkshire. Anywhere in ML11, we cover window mastic for homes and businesses. Greenwall is one of 139 towns and villages in South Lanarkshire where we work for window mastic. For nearby work, see our Edinburgh page, about 23 miles away.
We cover every part of ML11 for window mastic and the streets around it. If you’re just outside Greenwall, we cover Climpy (1 mile north-west), Forth (1 mile south-east), Wilsontown (1 mile east), Haywood (2 miles east) and Braehead (3 miles south-east). Within a short drive, we also cover Hamilton (14 miles west), Uddingston (15 miles west), Blantyre (15 miles west), Larkhall (11 miles west), Carluke (6 miles south-west) and Lanark (7 miles south).
Local landmarks in Greenwall
Greenwall’s nearest station is Fauldhouse station, roughly 3.4 miles north of the centre. Nearby you will also find Couthally Castle (4.7 miles south-east).