South Lanarkshire · Scotland
Sand mastic for sash & case windows in East Kilbride, South Lanarkshire
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in East Kilbride, with a one-year guarantee on every job. Ask us for a quote.
- Silicone on a period window that looks wrong
- Mastic round period door frames that has failed
- Failed mastic on an exposed elevation
Can I do it myself?
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
Sand mastic in East Kilbride
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. We work on sash and case windows, period & listed homes and timber door frames, and people most often call us about patchy fillers round a sash window and gaps where the frame meets the masonry.
Harled walls are common in Scottish towns like East Kilbride, and sealing a frame against rough harling takes a sealant that grips and moves. A bead that sits on top of the harling rather than in the joint soon lets water in.
Each job carries a 12-month guarantee, whatever its size.
- Where
- East Kilbride (G74, G76)
- Region
- South Lanarkshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Why it’s worth doing now in East Kilbride
Before painting the windows, it pays to renew the mastic. Paint over cracked mastic will not stop the gaps and traditional guidance is to leave the new mastic unpainted. In flats with a shared stair in East Kilbride, a leak from a failed seal can affect the flat below too, and that is much harder to put right.
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we will explain what it covers.
Why East Kilbride customers choose us
- Quality sealants from Arbo and Everbuild
- Neat joints and a tidy finish
- 12-month guarantee on every job
- Old sealant always removed completely
Take a look at how sealant jobs are priced and customer reviews.
The process
We bring everything the job needs with us. After a quick look at the joints together, the area is protected and the work begins. It normally takes a few hours per window, depending on the condition of the joints. In a Scottish town like East Kilbride, parking is generally straightforward, though older centres can be tighter. For flats, mention the shared stair or door entry system.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- 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
- Tell us if parking is tricky
- Try not to wet indoor joints just before the visit
- Let us know about stairs, lifts or work at height
Ask for a quote
Asking for a quote is easy: let us know what needs doing and where. Photos by email help us understand the job.
Advice
FAQs for East Kilbride
Can you help a landlord with a rental near East Kilbride station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Is East Kilbride in your area for sand mastic?
Yes. Our work covers the whole of Scotland, and East Kilbride is part of that. Just drop us a line at info@mrmastic.co.uk with a few details of the job.
Will the old sealant be removed?
Yes, always, and completely. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Is it worth trying it myself?
Some simple jobs can be done by a careful DIYer. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Can you seal over the old sealant?
No. Fresh sealant does not stick to old sealant, and it traps any mould or water underneath. We remove it all first.
Do you offer different sealant colours?
Usually, yes. White, clear and grey are common, and other colours are available, and we will agree it with you first.
How do I get a quote for sand mastic in East Kilbride?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we’ll talk you through it.
Will it make a mess?
Very little: the area around the joints is protected first, and we tidy up before we go.
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Ask the planning authority about consent for listed or conservation-area homes
- Don’t run silicone over sand mastic
- Leave the new mastic unpainted
- Get any rot dealt with first
Avoid sealing over the mastic with silicone. If you see a crack, ask us to take a look rather than patching it.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry, so renewing it early is worth it.
For landlords and businesses
We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for before the next move-in.
Housing providers, facilities teams and property managers book us too in East Kilbride and across South Lanarkshire. Several sites can be quoted together, and we are fully insured for the work.
Surface by surface
Brick reveals
Sand mastic is also used where timber frames meet brick. It suits older brickwork.
Timber door frames
Doors face weather and wear and the mastic can crack early. We rake it out and renew it.
What we cannot put right
We will always be straight with you, so here’s what sealant can’t fix:
- Sashes that rattle, stick or will not open
- Whether work needs listed building consent
- Rotten sashes, sills or window boxes (a joiner’s job)
If you are not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer.
Joints and surfaces we work on
- Timber door frames
- Sash and case windows
- Period & listed homes
- Tenement windows
- Brick reveals
- Stone surrounds
East Kilbride homes and the weather
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. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Rented homes near East Kilbride station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Managing a site like Duncanrig Secondary School? Then the mastic around its windows and doors needs looking after like any other building’s.
East Kilbride is about 7 miles south-east of Glasgow, in South Lanarkshire. Every kind of property in East Kilbride can book us for sand mastic. The work is guaranteed for a year. East Kilbride is one of 139 towns and villages in South Lanarkshire we cover for sand mastic. We also work in Glasgow, around 7 miles away.
We work across the G74 and G76 postcode area for sand mastic and the streets around it. Whether your property is on Symington Square, Main Street and Dunglass Square or a nearby road, we can help. Main roads around East Kilbride include the A725 and A726. Neighbouring places we cover for sand mastic include The Murray (1 mile east), West Mains (1 mile north-east), Greenhills (1 mile south), The Village (1 mile north-east) and East Mains (1 mile north-east). Further out, we also cover Hamilton (5 miles east), Cambuslang (5 miles north-east), Uddingston (7 miles north-east), Blantyre (4 miles north-east), Larkhall (9 miles east) and Carluke (14 miles east). East Kilbride is one of the larger places we cover in South Lanarkshire.
What’s near East Kilbride
Locally, jobs take us to homes and businesses close to The Hay Stook pub, among other places. The nearest railway station is East Kilbride station, about 0.7 miles north-east of the centre. Other landmarks nearby include East Kilbride Shopping Centre (0.6 miles east) and Mains Castle (1.4 miles north). Green spaces nearby include Cathkin Braes.