Glasgow · Scotland
Sand mastic for sash & case windows in Whiteinch, Glasgow
Problem with your window and door surrounds in Whiteinch? We remove the old material, prepare the joints and seal them properly, with a one-year guarantee.
- Gaps where the frame meets the masonry
- Wind and rain getting in round a sash window
- A silicone bead on a sash window that spoils the look
Your questions about sand mastic in Whiteinch
Is Whiteinch in your area for sand mastic?
Yes. We work across all of Scotland, and Whiteinch is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear quote.
I let a flat near Jordanhill station. Can you help?
Yes, we work for letting agents and landlords. You can send an email to info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before any work starts.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and finished to sit neatly against the masonry.
Can you seal over the old sealant?
No. Fresh sealant doesn’t stick to old sealant, and it traps any mould or water underneath. It all has to come out first.
Can you replace silicone on a period window with sand mastic?
Yes, it’s a common request. The old silicone has to come out completely so the mastic can sit properly.
Will there be a smell?
It depends on the product. Some smell for a while, some hardly at all, and any smell fades as they cure.
What do you need from me for a quote?
The location, the problem and the rough size of the job. Photos by email help too.
Which is right for my windows, sand mastic or modern sealant?
Sand mastic normally suits period timber windows best. Modern frames normally suit a flexible sealant.
How we handle sand mastic in Whiteinch
Fresh sand mastic forms a skin quite soon, but it takes longer to harden fully. Traditional guidance is not to paint over it and we’ll advise if you are redecorating. If you have mastic round period door frames that has failed and mastic dropping out of the joint, we can put it right.
In a Scottish city, many flats have windows two, three or four floors up, where failing mastic is easy to miss. Access is the first thing to plan for a job in Whiteinch.
You are covered for a year from the day we finish. If there’s a problem with it, please send an email to info@mrmastic.co.uk.
- Place
- Whiteinch (G11, G14, G51)
- Region
- Glasgow
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
How the job changes by surface
Tenement and terrace windows
Rows of sash windows on tenements and terraces often need renewing together. We can do one window or several.
Sash and case windows
A sash window’s box frame sits in the masonry opening. The gap round it is pointed with sand mastic.
Keeping the joints in good condition
How long the joints last depends on use and care. Here’s what we suggest:
- Ask the planning authority about consent for listed or conservation-area homes
- Don’t run silicone over sand mastic
- Ask a joiner to look at soft timber first
- Make sure water runs off the sill
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Once mastic starts to crumble, rain gets in. That water can reach the timber frame and the wall, so renewing it early is worth it.
Leave it or put it right?
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. Wind-driven rain gets into any failed joint on the outside of a city building, and in a tall building in Whiteinch, damp can travel a long way before it shows.
Instead of a standard rate, we look at what your job involves: the amount of work, the old material and the access. The price is agreed before we begin.
Why us?
- 180+ five-star Google reviews
- Old sealant always removed completely
- Fully insured
- 20+ years of sealant experience
Do you need sand mastic in Whiteinch?
Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint, which is a good time to renew it.
The problems people generally mention when they call are:
- Silicone on a period window that looks wrong
- Old sand mastic that has cracked, crumbled or fallen out
- Failed mastic on an exposed elevation
- Draughts and rain around sash boxes
Rented homes near Jordanhill station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
Before booking anyone
- Are they insured?
- How hidden problems are handled
- How much experience the applicator has
- How long the guarantee is
Other services in Whiteinch
What happens on the day
You don’t need to clear the whole room or building, just the space around the work. We protect the rest, and the work takes anything from a few hours to a full day, depending on how many windows in most cases. Many homes in Scotland’s cities are tenement flats, reached through a shared close and up a common stair. In Whiteinch, it helps to know the floor, the door entry arrangements and the nearest parking.
- We start by checking each surround and agreeing the joints to renew.
- Old, loose mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The mastic is finished to sit tidily against the stone or brick.
Getting ready for the visit
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
- Let us know about parking restrictions
How to get a quote
Need a quote? Please send an email to info@mrmastic.co.uk with a few details. We will explain what we’d do and give you a clear quote before we start.
Related advice
Whiteinch homes and the weather
Whiteinch is in the west of Scotland, which is wetter than the east, so there’s plenty of rain for the mastic around older windows and doors to keep out. Glasgow’s tenements are largely red and blond sandstone, and sandstone is porous, so any sealant against it has to be one that won’t stain or attack it.
For site and facilities teams at buildings such as Ladywell School, the mastic around its windows and doors needs looking after like any other building’s. In the older streets around St Paul's Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Whiteinch is about 2 miles east of Renfrew, in Glasgow. Across the G11 area, we cover sand mastic for homes and businesses. Whiteinch is one of 183 places in Glasgow we cover.
Postcode districts we cover here for sand mastic: G11, G14 and G51. Sand mastic is available to properties on Morna Lane, Norby Road and Mitre Road and the roads around them. With the A739 and A814 close by, Whiteinch is simple for us to get to for sand mastic. If you are just outside Whiteinch, we cover Broomhill (1 mile north-east), Thornwood (1 mile east), Linthouse (1 mile south), Scotstoun (1 mile north-west) and Jordanhill (1 mile north). Further out, we also cover Glasgow (3 miles south-east), Garnethill (3 miles east), Calton (4 miles east), Blythswood Hill (3 miles east), Langside (4 miles south-east) and Cowcaddens (3 miles east).
Landmarks near Whiteinch
Around Whiteinch, our work takes us to homes and buildings near Glasgow University Library, Jordanhill College and Thornwood Primary School. The nearest railway station is Jordanhill station, roughly 0.8 miles north of the centre. Nearby you’ll also find Partick Castle (1.1 miles east) and Braehead (1.3 miles west). Not far away are Castle Hill and Kilmardinny.
What sealant work cannot fix
It helps to know what we can’t do too:
- Sash cords, weights and draught-proofing of the sashes
- Crumbling stone or brickwork round the window
- Broken panes
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly before you book.
Joints and surfaces we work on
- Tenement windows
- Sash and case windows
- Period & listed homes
- Timber door frames
- Stone surrounds
- Brick reveals
Should I try it myself first?
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.