Scotland

Sand Mastic in South Lanarkshire

We cover 139 towns and villages in South Lanarkshire for sand mastic, with old sealant always removed and a one-year guarantee on every job., done properly, with a clear quote before we start and a one-year guarantee.

Sand Mastic across South Lanarkshire

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Towns we cover in South Lanarkshire

Traditional burnt sand mastic around sash and case windows and doors in stone and brick. Pick your town below to see the details for your area, or call or email us for a quick quote.

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Postcode areas we cover

How sand mastic works in South Lanarkshire

For a listed home or one in a conservation area, ask your local planning authority if consent is needed before window work. Sand mastic is often favoured as a like-for-like material. We work on brick reveals, timber door frames and tenement windows, and people most often call us about mastic dropping out of the joint and draughts and rain around sash boxes.

Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours for a single window, longer for several and we leave things clean and tidy.

Each surround is checked first.
We rake out the old mastic and clean the joint.
Large voids are packed out.
We point the joint with sand mastic by hand.
We finish the mastic to a tidy line.

What you will pay

The cost reflects the work involved, not guesswork. That is why we ask a few questions first.

What you get with us

Approved under the ARBOMaster scheme
Domestic, commercial and hotel work
180+ five-star Google reviews
More than 20 years in sealant work

How to get a quote

For a quick quote, get us on the phone, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work and give you a clear quote.

Around East Kilbride

We work in homes and buildings around Duncanrig Secondary School, The Hay Stook pub and East Kilbride. For rail, the closest station is East Kilbride station, about 0.7 miles north-east of the centre. Nearby you will also find East Kilbride Shopping Centre (0.6 miles east) and Mains Castle (1.4 miles north). Open spaces near East Kilbride include Cathkin Braes.

Windows and doors across South Lanarkshire

Homes across South Lanarkshire range from period properties with timber or sash windows to new builds with uPVC. Walls facing the weather take the most punishment, wherever they are in South Lanarkshire.

We work across all of Scotland, from the cities to the islands, and South Lanarkshire is part of that. Journeys are planned ahead, and outside jobs are booked around the forecast.

East Kilbride: If you look after a building such as Duncanrig Secondary School, its window and door frames need their mastic kept sound, just like a home’s. Rented homes near East Kilbride station change hands often, and any sash windows need sound mastic to keep draughts and rain out.

Why deal with it now?

New sash windows are a major, costly change, and in listed buildings it may need consent. Where the frames are in good order, new mastic seals the surround.

Questions to ask before booking

When the joint can take water or movement
Whether they seal over old material or remove it
How the colour is chosen
What guarantee comes with the work

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. Everything old must be removed first.

Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.

Aftercare tips

Aftercare is simple:

Ask a joiner to look at soft timber first
Don’t run silicone over sand mastic
Inspect the joints round the windows every year or so
Avoid heavy scraping on the mastic joint

Keep gutters and sills clear so water runs away from the surround. Water sitting against the mastic shortens its life.

Crumbling mastic lets rain into the joint. That water can reach the timber frame and the wall so early renewal protects both.

Why it fails

Decorating can disturb tired mastic. It’s often found when windows are being prepared for paint.

The problems people normally mention when they call are:

Gaps where the frame meets the masonry
Gaps round a timber door in stone or brick
Wind and rain getting in round a sash window
Modern sealant on a period surround

Landlord and commercial work in South Lanarkshire

Housing providers, facilities teams and property managers book us too across South Lanarkshire. Several sites can go on one quote.

Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.

South Lanarkshire questions

Can I do it myself?

That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.

Where do you work from?

Mr Mastic is based in Crawley. We cover South Lanarkshire, along with the rest of our area.

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.

Do the sealants smell?

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

Do I have to be there?

That depends on where the joints are. Inside work needs someone to give us access, and for outside work we will agree access with you when we book.

Is it OK to seal over old sealant?

No. New silicone won’t bond to old silicone, and anything trapped underneath, including mould and water, stays there. We remove it all first.

I’m a tenant. Can you help?

Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.