Glasgow · Scotland

Sand mastic for sash & case windows in Old Drumchapel, Glasgow

Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Old Drumchapel and across Glasgow. ARBOMaster approved applicators, fully insured, with a one-year guarantee.

  • Open joints round the window box
  • Modern sealant on a period surround
  • Tired mastic found when preparing windows for paint

Book sand mastic in Old Drumchapel

About our sand mastic in Old Drumchapel

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’re redecorating. We work on brick reveals, tenement windows and timber door frames, and common reasons people get in touch are cracked mastic round a front door frame and a silicone bead on a sash window that spoils the look.

In a Scottish city, many flats have windows two, three or four floors up, so the mastic outside can go unchecked for years. For a flat in Old Drumchapel, access is the first thing to plan, and in a tenement the outside of the building may be a shared repair.

Our work is backed for twelve months, and the guarantee is the same wherever you are.

Place
Old Drumchapel (G15, G13, G81)
Wider area
Glasgow
Guarantee
One year on every job
Quotes
Quoted before any work starts
Email
info@mrmastic.co.uk
Last updated
26 October 2026
Mr Mastic applicator sealing the top of a white uPVC door frame on a red-brick house

Windows and doors in Old Drumchapel

The Tenements (Scotland) Act 2004 sets out how owners share the upkeep of common parts like the roof and outside walls, often through a property factor. Who owns the windows depends on the title deeds. Old Drumchapel is in the west of Scotland, which is wetter than the east, which means the mastic around older windows and doors has to cope with a lot of rain.

If you look after a building such as Saint Andrew's High School, its window and door frames need their mastic kept sound, just like a home’s. Letting a property close to Drumchapel station? Then older sash windows in a rental need their mastic kept sound to keep the weather out. If you live in an older home near St David's Parish Church, the joint between an old wall and a newer frame is normally the first place rain gets in.

Old Drumchapel is about 2 miles south-west of Bearsden, in Glasgow. For sand mastic in and around Old Drumchapel, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We’re based in Crawley and cover Glasgow. Old Drumchapel is one of 183 towns and villages in Glasgow where we work for sand mastic.

Postcode districts we cover here for sand mastic: G15, G13 and G81. Local streets include Fruin Road, Manor Road and Dosk Avenue, all of which we cover. Other places close to Old Drumchapel include Drumchapel (1 mile north-east), Blairdardie (1 mile east), Linnvale (1 mile west), Drumry (1 mile north-west) and Westerton (1 mile east). Further out, we also cover Glasgow (5 miles south-east), Hillhead (4 miles south-east), Dowanhill (3 miles south-east), Woodlands (4 miles south-east), Woodside (4 miles south-east) and North Kelvinside (4 miles south-east).

Landmarks near Old Drumchapel

Old Drumchapel has its own railway station: Drumchapel station. Well-known places in the area include Renfrew Museum (1.8 miles south-west) and Drumchapel Hospital (0.5 miles north-east). For a walk, there’s Castle Hill and Kilmardinny.

Map of Old Drumchapel © OpenStreetMap contributors

Aftercare tips

No joint lasts for ever, but care makes a real difference. A few tips:

  • Go gently near the mastic when preparing windows
  • Sort the mastic before the decorators arrive
  • Inspect the joints round the windows every year or so
  • Keep sills and gutters clear so water drains away

Keep paint scrapers and sanders off the mastic when redecorating. It can be damaged by heavy scraping.

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.

Common questions in Old Drumchapel

Do you cover Old Drumchapel for sand mastic?

Yes, Old Drumchapel is within the area we cover. Our work covers the whole of Scotland. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing, and we’ll give you a clear price.

How do repairs to the shared parts of a tenement in Old Drumchapel get organised?

Most tenements arrange shared repairs through the owners or a property factor. The Tenements (Scotland) Act 2004 sets the rules for common parts if the deeds don’t.

Are you fully insured?

Yes. We are fully insured for every job we do.

Do the sealants smell?

There can be a smell while the sealant cures, which fades as it sets. Opening a window helps.

How do I get a quote for sand mastic in Old Drumchapel?

Size, access and the old material all affect the cost. Ask us for a quote.

Can you seal over the old sealant?

No. New silicone will not bond to old silicone, and it traps any mould or water underneath. We remove it all first.

When will the new mastic be hard?

Not straight away. It skins first and hardens fully later and we will give you an idea for your job.

Can sand mastic be painted?

The usual advice is to leave sand mastic unpainted. Ask us before you decorate around it and we will talk you through it.

DIY versus a professional finish

Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.

A DIY attempt does not rule out a professional job. We cut it out and start again.

When it is not the sealant

Sealant is not the answer to every problem, and we’d rather say so up front. It will not solve:

  • Planning or listed building consent (your local planning authority decides)
  • Damaged stone surrounds
  • Timber that has rotted

If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.

Joints and surfaces we work on

  • Brick reveals
  • Period & listed homes
  • Stone surrounds
  • Tenement windows
  • Timber door frames
  • Sash and case windows

How we quote for sand mastic

You’ll get a clear quote before we start. It’s based on:

  • Any working-time requirements on site
  • Mould in or behind the old joints
  • The number and length of the joints
  • How many rooms, windows or areas are involved

What you pay reflects the work, not guesswork. That is why we ask a few questions first and give you a clear quote before work begins.

Helping us quote

To help us quote quickly, please include:

  • A few pictures by email, if you can
  • If someone has resealed it before
  • Whether it’s a home or a business
  • Where the property is

A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that’s easy.

Why deal with it now?

Not every filler suits an old window surround. Sand mastic matches what was there, which can matter on listed and conservation-area homes. Private landlords in Old Drumchapel must meet the Repairing Standard, and damp or leaks can fall short of it, so it’s worth fixing failed sealant before a tenant reports it.

Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.

Why Old Drumchapel clients choose us

  • Trusted Arbo and Everbuild sealants
  • More than 20 years in sealant work
  • We leave the area clean and tidy
  • Old sealant always removed completely

Take a look at how sealant jobs are priced or our reviews.

The process

All our tools and materials come with us in the van, so you don’t need to buy or prepare anything. After a quick look at the joints together, we protect the area and start. Most jobs take anything from a few hours to a full day, depending on how many windows. In a city area like Old Drumchapel, parking may be by permit or pay-and-display, so tell us what’s nearby. If you’re in a flat, let us know how we get in at the street door.

  1. First we agree which joints need doing.
  2. We remove the old, loose mastic.
  3. We pack any deep voids first.
  4. We apply the mastic by hand and shape it.
  5. The surface is finished to suit the stone or brick.

Getting ready for the visit

  • Mention any parking rules near the property
  • Plan for the work area to be out of bounds to pets and children
  • Clear items away from the joints we’re working on

How to get a quote

For sand mastic in Old Drumchapel, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.

Ask for a quote

Advice

Landlords, agents and businesses in Old Drumchapel

Failed sealant is one of the commonest items on a check-out report, and it’s quick to put right between tenancies. We can quote for more than one property at once.

Housing providers, facilities teams and property managers book us too in Old Drumchapel and across Glasgow. Several sites can go on one quote, and we’re fully insured for the work.

20+ yearsMastic and sealant specialists
ARBOMaster approvedApproved applicator for Arbo sealants
Fully insuredDomestic, commercial and hotels
One-year guaranteeOn every job