East Dunbartonshire · Scotland
Sand Mastic in Lenzie
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Lenzie, with a 12-month guarantee on every job. Call for a quick quote.
- Gaps round a timber door in stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Tired mastic found when preparing windows for paint
The process
The work is kept neat and contained to the area we are working on. Expect the work to take a few hours per window, depending on the condition of the joints, and we explain the cure time before we leave. Parking around Lenzie is rarely difficult, though older streets in the centre can be tight. For flats, mention the shared stair or door entry system.
- First we agree which joints need doing.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Before we arrive
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we’re working on
Ask for a quote
Need a quote? Please drop us a line at info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
About our sand mastic in Lenzie
Burnt sand mastic is a traditional material that sits naturally against stone and brick. It suits period and listed homes, where modern sealant can look out of place. Typical jobs include mastic dropping out of the joint and a silicone bead on a sash window that spoils the look, across timber door frames, brick reveals and stone surrounds.
Scottish towns like Lenzie tend to mix older stone-built streets, harled houses and newer estates, and windows range from older sash and case to modern uPVC. Each needs the right sealant against the right wall.
The work is covered for a year after we finish. If anything is not right with it, email us at info@mrmastic.co.uk.
- Where
- Lenzie (G66)
- Region
- East Dunbartonshire
- Cover
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Why it’s worth doing now in Lenzie
If you are redecorating, renew the mastic first. Painting over failed mastic doesn’t seal it and traditional guidance is to leave the new mastic unpainted. Private landlords in a town like Lenzie must keep homes wind and watertight under the Repairing Standard. Replacing failed sealant early is simpler than dealing with a complaint.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
What you get with us
- Trusted Arbo and Everbuild sealants
- Every job guaranteed for a year
- Experience in homes, commercial sites and hotels
- 20+ years of sealant experience
Read what affects the cost and customer reviews.
Aftercare tips
So the new joints stay in good condition:
- Renew mastic before redecorating the windows
- Keep modern sealant off the mastic
- Do not paint over the new mastic
- Keep sills and gutters clear so water drains away
Check the mastic when you check the paintwork. Small cracks are easier to deal with early.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
What the job involves on each surface
Period and listed homes
Many older homes were built with sand mastic round the windows. On listed buildings, check with your planning authority first.
Tenement and terrace windows
Windows above ground floor need the right access. Let us know the floor and we’ll confirm access.
When something else is needed
We’ll always be straight with you, so here’s what new sealant will not do:
- Putty and glazing repairs
- Decisions on consent for listed homes
- Sashes that rattle, stick or will not open
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think before booking.
What we seal
- Brick reveals
- Stone surrounds
- Tenement windows
- Period & listed homes
- Timber door frames
- Sash and case windows
Lenzie: your questions answered
What guarantee comes with sand mastic in Lenzie?
Every job comes with our one-year guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
I let a flat near Lenzie station. Can you help?
Yes, we work for landlords and letting agents. Just drop us a line at info@mrmastic.co.uk and tell us about the property, and we will give you a clear price.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Is sand mastic better than silicone for my windows?
Sand mastic usually suits period timber windows best. Modern frames normally suit a flexible sealant, and we’ll explain why.
Can you work on commercial sites?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. We can talk about working times when we quote.
What sealant do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice, and we will explain our choice.
Is it OK to seal over old sealant?
No, it won’t last. It can look neat for a few weeks, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
Do you have insurance?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Sand mastic in Lenzie: local notes
The west of Scotland is wetter than the east, which means the mastic around older windows and doors has to cope with a lot of rain. 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.
If you look after a building such as Kirkintilloch High School, larger buildings have plenty of frames, and the mastic around each one ages. For landlords with property near Lenzie station, cracked sand mastic around sash windows lets in the draughts tenants complain about. For an older house near a landmark such as Lenzie Old Parish Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Lenzie is about 6 miles west of Cumbernauld, in East Dunbartonshire. From the centre of Lenzie to the outskirts, sand mastic is available for homes and businesses alike, from flats and houses to offices and hotels. Our East Dunbartonshire coverage runs to 23 places, Lenzie among them. We also work in Glasgow, about 7 miles from Lenzie.
We cover every part of G66 for sand mastic and the streets around it. That includes homes and businesses on Moss Road, Cult Road and Loch Road and the roads around them. Main roads around Lenzie include the A806. Close by, we work in Kirkintilloch (1 mile north), Woodilee Village (1 mile north-east), Auchinloch (1 mile south), Waterside (1 mile north-east) and Birdston (2 miles north). Within a short drive, we also cover Bearsden (7 miles west), Bishopbriggs (3 miles south-west), Milngavie (7 miles west), Lennoxtown (4 miles north-west), Milton of Campsie (3 miles north) and Cadder (3 miles west).
What’s near Lenzie
Lenzie has its own railway station: Lenzie station. Other landmarks nearby include Glasgow Fort (3.6 miles south) and Barony Chambers Museum (1.3 miles north). For a walk, there’s Bar Hill and Lenzie Moss.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
Work for landlords, hotels and businesses
Landlords and letting agents in Lenzie can book us as well as homeowners. Resealing between tenancies is a simple way to keep a property in good order.
Whether it’s one flat or a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.