North Lanarkshire · Scotland
Sand Mastic in Glenmavis
Sand mastic in Glenmavis from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Draughts and rain around sash boxes
- Crumbling sand mastic round a window
- Open joints round the window box
Sand mastic in Glenmavis, done properly
Silicone on a period window often looks wrong and does not suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. Common call-outs are for silicone on a period window that looks wrong and wind and rain getting in round a sash window, on brick reveals, timber door frames and sash and case windows.
Mastic can only go onto a dry joint, so outside work in Glenmavis depends on the weather. Tell us about access to all the windows and doors, upstairs included.
A one-year guarantee comes with the work, just as it does everywhere we cover.
- Place
- Glenmavis (ML6)
- Wider area
- North Lanarkshire
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
When it is not the sealant
New sealant cannot fix everything, and we will tell you before any work starts. It will not solve:
- Decayed frames that need repair
- Planning or listed building consent (your local planning authority decides)
- Damaged stone surrounds
If you are not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer.
Joints and surfaces we work on
- Stone surrounds
- Brick reveals
- Sash and case windows
- Timber door frames
- Tenement windows
- Period & listed homes
Places near Glenmavis
Also in Glenmavis
Surface by surface
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
Stone surrounds
We take care not to mark the stone while raking out the old mastic.
Glenmavis: your questions answered
Do you cover Glenmavis for sand mastic?
Yes, Glenmavis is within the area we cover. Our work covers the whole of Scotland. You can email us at info@mrmastic.co.uk and tell us what needs doing, and we will give you a clear quote.
Will you come out to Glenmavis?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Do you work for letting agents?
Yes, regularly. We can quote for several properties at once, and between tenancies is a good time for the work.
How do I get a quote for sand mastic in Glenmavis?
Size, access and the old material all affect the cost. Call for a quick quote and we will talk you through it.
What’s sand mastic made of?
A traditional pointing material made from sand and a linseed-oil-based binder for the joint between timber frames and masonry.
Can I do it myself?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Does someone need to be in?
We need access to the joints, so we’ll agree that with you when we book. For inside work, that normally means someone being in.
How long does the job take?
Most jobs take a few hours per window, depending on the condition of the joints, including preparation and clearing up. We will confirm how long when we quote.
How to look after the new joints
So the new joints stay in good condition:
- Make sure water runs off the sill
- Plan mastic work ahead of painting
- Have rotten timber repaired before new mastic goes in
- Keep modern sealant off the mastic
Leave the new mastic unpainted, as traditional guidance advises. Ask us before any decorating around it.
Gaps round a sash box let in draughts and rain. Left, the gap tends to get bigger.
Why deal with it now?
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic suits the building and blends with the stone or brick. In a place like Glenmavis, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
Rather than a set price list, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why us?
- One-year guarantee on every job
- Any old sealant cut out fully, not covered over
- Homes, businesses and hotels
- Sanitary silicone with an anti-fungal additive in wet areas
Take a look at our cost guide and customer reviews.
Frames and glazing around Glenmavis
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against 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.
Managing a site like Airdrie Academy? Then the mastic around its windows and doors needs looking after like any other building’s. For landlords with property near Coatdyke station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Glenmavis is about 2 miles north-west of Airdrie, in North Lanarkshire. We provide sand mastic to homes and businesses in Glenmavis and nearby, as part of our work across North Lanarkshire. Glenmavis is one of 89 places in North Lanarkshire where we work for sand mastic. For nearby work, see our Glasgow page.
Postcode districts we cover here for sand mastic: ML6. Streets in the area include Glenwell Street, Glenview Street and Glenmavis Road, and we cover them all. Nearby, we also carry out sand mastic in New Monkland (1 mile north-east), Burnfoot (1 mile south-east), Airdrie (2 miles south-east), Airdriehill (2 miles east) and Plains (2 miles east). Further out, we also cover Motherwell (6 miles south), Cumbernauld (5 miles north), Wishaw (8 miles south), Bellshill (5 miles south), Kilsyth (7 miles north) and Shotts (9 miles south-east).
What’s near Glenmavis
For rail, the closest station is Coatdyke station, roughly 1.4 miles south of the centre. Nearby you will also find Monklands Hospital (1.3 miles south) and Weavers Cottage Museum (1.3 miles south-east).
How we quote for sand mastic
The quote reflects the job in front of us. We take into account:
- When we can work, for business premises
- Mould in or behind the old joints
- Access and height
- The old material and how stubborn it is
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. We give a clear quote before work begins, so you know where you stand.
Asking for a quote
What to tell us when you ask for a quote:
- Roughly how big the job is
- Access, such as stairs, a lift or height
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
We quote each job on its own, so start by telling us what you need. Simply drop us a line at info@mrmastic.co.uk and describe the job, and pictures are welcome.
When to call us in Glenmavis
Some old mastic was never deep enough. Mastic that is too thin cracks and drops out so we make sure the new mastic is the right thickness.
It’s worth asking for a quote if you see:
- Gaps where the frame meets the masonry
- Gaps round a timber door in stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Patchy fillers round a sash window
Homes close to Parish Church include some older properties, and the joint between an old wall and a newer frame is normally the first place rain gets in.
What to look for in a quote
- What insurance they hold
- Whether all the old sealant comes out first
- What the quote includes, VAT included or not
- How the surfaces are prepared before sealing
How it works
There is not much for you to do on the day. Show us the job and we will take it from there. The work itself takes a few hours per window, depending on the condition of the joints, including the tidy-up. Outside jobs in Glenmavis need a dry day, because sealant won’t bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic isn’t too thick.
- The mastic is mixed, pressed into the joint by hand and shaped.
- We dress the surface so it sits neatly against the masonry.
Before we arrive
- Where the joints are inside, avoid wetting them before we arrive
- Keep children and pets away from the work area
- Mention any leaks or damp you’ve noticed
Getting a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll explain how we’d tackle it. Whenever you are ready, email us at info@mrmastic.co.uk.