Renfrewshire · Scotland
Sand Mastic in Renfrew
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for Renfrew, backed by a one-year guarantee. Ask us for a quote.
- Gaps between timber frames and stone or brick
- Draughts and rain around sash boxes
- Crumbling sand mastic round a window
About our sand mastic in Renfrew
We work across Renfrew renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. If you’re dealing with tired mastic found when preparing windows for paint and a silicone bead on a sash window that spoils the look, we can help, whatever the surface.
Scottish weather is hard on window mastic, and a town like Renfrew gets its share of wind and rain. The windows facing the weather are usually the first to leak, so it’s worth checking them all.
You are covered for a year from the day we finish. If there’s a problem with it, please drop us a line at info@mrmastic.co.uk.
- Where
- Renfrew (PA4, G52, G51, PA3)
- Wider area
- Renfrewshire
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it peels away and traps moisture behind it. All the old material has to come out first.
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. Where it goes wrong is sealing over the old bead, working on a wet joint or overloading the gap.
How the visit works
On the day, we start by going over the job with you. We protect the surfaces around the joints before work begins. The work usually takes a few hours per window, depending on the condition of the joints. A visit in Renfrew needs three things planned: access, parking and where the work is. Outdoor jobs need a dry day, so they can move if the weather turns.
- Each surround is checked first.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Mention if the joints have been sealed before
- Clear items away from the joints we’re working on
How to get a quote
Need a quote? Please send an email to info@mrmastic.co.uk and tell us about the job. We’ll explain what we’d do and give you a clear price before any work starts.
Related advice
What sealant work can’t fix
New sealant cannot fix everything, and we’ll tell you before we start. Sealant won’t put right:
- Cracked or broken glass
- Timber that has rotted
- Sashes that need overhauling
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 Renfrew
- Brick reveals
- Tenement windows
- Period & listed homes
- Sash and case windows
- Timber door frames
- Stone surrounds
Renfrew homes and the weather
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that. The west of Scotland is wetter than the east, so there’s plenty of rain for the mastic around older windows and doors to keep out.
Rented homes near Hillington West station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about. Historic houses such as Pollok House, about 4 miles south-east, show how far back building around Renfrew goes.
Renfrew is about 3 miles north-east of Paisley, in Renfrewshire. Our applicators cover sand mastic for homes and businesses in Renfrew and the surrounding area. Our Renfrewshire coverage runs to 21 places, and Renfrew is one of them.
Our applicators cover all of PA4, G52, G51 and PA3 for sand mastic. Streets in the area include High Street, Laymoor Square and Crofton Square, and we cover them all. You’ll find Renfrew on the A8 and A736, so it’s easy for us to get to. If you are just outside Renfrew, we cover Shieldhall (1 mile south-east), Garscadden (1 mile north-east), Scotstounhill (1 mile north-east), Penilee (1 mile south-east) and Yoker (1 mile north). Larger places within reach include Paisley (3 miles south-west), Johnstone (6 miles south-west), Erskine (3 miles north-west), Bishopton (5 miles north-west), Glenburn (4 miles south-west) and Charleston (3 miles south-west).
Around Renfrew
Around Renfrew, our work takes us to homes and buildings near Robertson Park and Wheatsheaf Public House and the streets around them. For rail, the closest station is Hillington West station, about 1.2 miles south-east. Nearby you will also find Renfrew Castle (0.5 miles north-east) and Renfrew Museum (0.5 miles north). For a walk, there’s Castle Hill and Kilmardinny.
When to call us in Renfrew
Over the years, sand mastic weathers. It dries out, cracks and loses its grip from the frame or the masonry.
Common reasons people contact us include:
- Draughty sash windows at the surround
- Gaps round a timber door in stone or brick
- Old sand mastic that has cracked, crumbled or fallen out
- Failed mastic on an exposed elevation
Schools such as Renfrew High School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- Whether the sealant suits the joint
- The length of the guarantee
- When the joint can take water or movement
- Is VAT in the price?
Why it’s worth doing now in Renfrew
Replacing sash windows is a big decision for a period home and on a listed home, consent may be needed. Where the frames are in good order, new mastic seals the surround. In flats with a shared stair in Renfrew, a leak from a failed seal can affect the flat below too, and that is much harder to put right.
There are no prices on our website, because each job is priced on what it involves. For a quick quote, please email us at info@mrmastic.co.uk and we’ll talk you through it.
Why book with us
- We’re fully insured
- 180+ five-star Google reviews
- Neat joints and a tidy finish
- We never seal over old sealant
What the job involves on each surface
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. The gap round it is pointed with sand mastic.
Period and listed homes
A traditional finish suits a period property.
Towns and villages near Renfrew
Other services in Renfrew
Quotes for sand mastic in Renfrew
We quote each job individually. This is what makes a difference:
- The old material and how stubborn it is
- The type of sealant required
- The number and length of the joints
- How many areas need sealing
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.
What we need to know
Before you ask for a quote, have a think about:
- The rough size of the job
- Any access issues, like height or stairs
- Where the property is
- The type of property
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will explain what’s involved before giving you a price.
Common questions in Renfrew
What guarantee comes with sand mastic in Renfrew?
Every job comes with our 12-month guarantee, wherever it is. We’re also fully insured and ARBOMaster approved.
I let a flat near Hillington West station. Can you help?
Yes, we work for letting agents and landlords. You can drop us a line at info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before work begins.
Can you match the sealant colour?
Yes. Sealants come in white, clear, grey and other colours for many products, and we agree the colour with you before work begins.
Does someone need to be in?
That depends on where the joints are. Inside work needs someone to give us access, while outside work can sometimes be arranged differently.
How long will you be here?
It depends on the size of the job, but most jobs take anything from a few hours to a full day, depending on how many windows. We’ll give you a better idea when we quote.
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. Sand mastic is often favoured as like for like, but they decide.
Are you insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Do you work in Renfrew?
Yes, we do. Renfrew is part of the area we cover, and the service is the same as everywhere else.