Renfrewshire · Scotland
Craigends Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homes and businesses in Craigends and across Renfrewshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Weathered mastic on the most exposed windows
- Open joints round the window box
- Old cement repairs round a window that have failed
About our sand mastic in Craigends
Sand mastic skins over fairly quickly but full hardening takes longer. Traditional guidance is not to paint over it, so ask us before you decorate. We work on sash and case windows, timber door frames and stone surrounds, and common reasons people get in touch are failed mastic on an exposed elevation and window mastic to renew ahead of painting.
Outdoor sealant needs a dry surface, so window work around Craigends is planned around the weather. Tell us about access to all the windows and doors, upstairs included.
All our work comes with a 12-month guarantee, wherever you are in Renfrewshire.
- Location
- Craigends (PA6)
- Region
- Renfrewshire
- Guarantee
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Questions from Craigends
Is Craigends in your area for sand mastic?
Yes, Craigends is within the area we cover. We work across all of Scotland. You can email us at info@mrmastic.co.uk and let us know what needs doing.
Do you cover smaller places like Craigends?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Is sand mastic better than silicone for my windows?
Sand mastic usually suits period timber windows best. Modern frames normally suit a flexible sealant.
Can you do several jobs on one visit?
Yes, and it often makes sense. Doing several areas at once is normally more efficient, so mention them when you ask for a quote.
Is it possible to paint over sand mastic?
Traditional guidance is not to paint over sand mastic. If you are redecorating the window, ask us first and we’ll advise.
Should I check with the council before work on a listed or conservation-area home?
It’s best to ask your local planning authority first. Like-for-like sand mastic is often the preferred finish but the decision is theirs.
Do you guarantee sand mastic work?
Every job comes with our one-year guarantee, and we’re fully insured.
What information do you need?
Only a few details: where it is, what you’ve noticed and how we reach it. After that, simply send an email to info@mrmastic.co.uk.
Craigends homes and the weather
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
If you live in an older home near St Fillan's R.C. Church and School, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Johnstone station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about.
Craigends is about 2 miles north of Johnstone, in Renfrewshire. If you need sand mastic in Craigends, please email us at info@mrmastic.co.uk for a quick quote. We are based in Crawley and cover Renfrewshire. Our Renfrewshire coverage runs to 21 places, and Craigends is one of them. For nearby work, see our Glasgow page, about 10 miles away.
Work in PA6 works the same way as everywhere else we cover. Streets in the area include Magnus Road, Viking Crescent and Leman Drive. We also cover the places around Craigends: Crosslee (1 mile west), Houston (1 mile north-west), Brookfield (1 mile south), Linwood (1 mile south-east) and Bridge of Weir (2 miles west). We also work in nearby towns such as Paisley (4 miles south-east), Renfrew (6 miles east), Erskine (4 miles north-east), Bishopton (3 miles north), Glenburn (5 miles south-east) and Charleston (5 miles south-east).
Near you in Craigends
Typical jobs here are in homes near Fox and Hounds Inn and Linwood High School and the streets around them. The closest station to Craigends is Johnstone station, about 2.1 miles south-east. A little further out are Merchiston Hospital (1.2 miles south) and Ranfurly Castle (2.2 miles west). The countryside around Craigends includes Whitemoss Dam and Walls Hill.
DIY sealant or a professional job?
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What affects the cost of sand mastic
We do not publish a price list, because no two jobs are the same. What we look at:
- The number and length of the joints
- Mould in or behind the old joints
- Working hours on commercial sites
- How many areas need sealing
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you are not sure whether it needs doing, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
What to tell us for a quote
What to tell us when you ask for a quote:
- How many joints, rooms or windows are involved
- If someone has resealed it before
- The type of property
- Access, such as stairs, a lift or height
Asking for a quote is easy: let us know what needs doing and where, and roughly how big it is. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.
The process
When we arrive, we start by going over the job with you, so you know exactly what we’re doing. Surfaces next to the work are protected before any work begins. The work generally takes anything from a few hours to a full day, depending on how many windows. Somewhere like Craigends may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We start by checking each surround and agreeing the joints to renew.
- The loose and crumbling mastic is raked out and the joint cleaned.
- 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.
- We dress the surface so it sits neatly against the masonry.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Mention if the joints have been sealed before
- Tell us about any water getting in
Ask for a quote
Every job is quoted individually, so the first step is telling us about yours. Just email us at info@mrmastic.co.uk with the details and send pictures if you have them.
Advice
How the job changes by surface
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
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
Good habits help new joints last longer. Our tips:
- Have rotten timber repaired before new mastic goes in
- Ask us before painting near the mastic
- Do not run silicone over sand mastic
- Check the mastic when you check the paintwork
Avoid sealing over the mastic with silicone. If anything cracks, get it looked at before trying a quick fix.
Good mastic helps keep the frame dry. Failed mastic lets water reach the timber and timber that stays wet can rot.
What we are called out for in Craigends
Paint, silicone or cement used over old mastic causes problems. They do not move with the timber, and they generally need raking out.
It’s worth asking for a quote if you see:
- Weathered mastic on the most exposed windows
- Mastic that needs renewing before redecorating
- Mastic round period door frames that has failed
- Silicone on a period window that looks wrong
For site and facilities teams at buildings such as Gryffe High School, its window and door frames need their mastic kept sound, just like a home’s.
Comparing quotes
- Is the old sealant removed completely?
- Whether VAT is included
- How the colour is chosen
- Which sealant they’ll use, and why
When it is not the sealant
To be straight with you, some problems need a different trade:
- Crumbling stone or brickwork round the window
- Putty and glazing repairs
- Whether work needs listed building consent
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think before you book.
Where we work in Craigends
- Brick reveals
- Sash and case windows
- Tenement windows
- Timber door frames
- Period & listed homes
- Stone surrounds