Dundee · Scotland
Sand mastic for sash & case windows in Barns of Claverhouse, Dundee
Professional sand mastic in and around Barns of Claverhouse, with every bit of old sealant taken out first and a 12-month guarantee.
- Patchy fillers round a sash window
- Modern sealant on a period surround
- Draughty sash windows at the surround
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Sand mastic in Barns of Claverhouse, done properly
Silicone on a period window often looks wrong and isn’t always the right material. Sand mastic is the traditional choice and we can swap the silicone for it. Typical jobs include cement or filler used on old window joints that has cracked and silicone on a period window that looks wrong, across stone surrounds, timber door frames and sash and case windows.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
There’s a 12-month guarantee on every job.
- Place
- Barns of Claverhouse (DD3)
- Region
- Dundee
- Guarantee
- One year on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
For landlords and businesses
Failed sealant is one of the commonest items on a check-out report. We can quote for more than one property at once.
Landlords and agents in Barns of Claverhouse can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Common problems we fix in Barns of Claverhouse
Paint, silicone or cement used over old mastic causes problems. They do not suit the joint, and they normally need raking out.
Common reasons people contact us are:
- Mastic dropping out of the joint
- Old cement repairs round a window that have failed
- Modern sealant on a period surround
- Draughts and rain around sash boxes
If you let a flat or house near Dundee station, any sash windows need sound mastic to keep draughts and rain out.
What your quote should include
- Whether they’re fully insured
- Who does the work, and how experienced they are
- What happens if the job turns out different
- How long the guarantee is
When something else is needed
We will not take on work that won’t last, so here’s what sealant cannot put right:
- Planning or listed building consent (your local planning authority decides)
- Timber that has rotted
- Sash cords, weights and draught-proofing of the sashes
If you are not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer before you book.
Joints and surfaces we work on
- Timber door frames
- Sash and case windows
- Period & listed homes
- Tenement windows
- Brick reveals
- Stone surrounds
Your questions about sand mastic in Barns of Claverhouse
Is Barns of Claverhouse in your area for sand mastic?
Yes, Barns of Claverhouse 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, and we’ll send you a clear quote.
Do you work for landlords with property near Dundee station?
Yes, landlords and agents are among the people we work for, and several properties can go on one quote. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
How long does sand mastic take?
A typical job takes anything from a few hours to a full day, depending on how many windows. We will confirm how long when we quote.
What is sand mastic?
A traditional pointing material made from sand and a linseed-oil-based binder, used between timber frames and stone or brick.
Can you match the sealant colour?
We help you choose a colour that suits, from white and clear to greys and other shades. The product needed can limit the range.
Can sand mastic be painted?
The usual advice is to leave sand mastic unpainted. If you’re redecorating the window, ask us first and we will advise.
What do you put in the joint?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
What happens on the day
You do not need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the job takes anything from a few hours to a full day, depending on how many windows for a typical job. Outside jobs in Barns of Claverhouse need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
Getting ready for the visit
- Clear the area around the work
- Plan for the work area to be out of bounds to pets and children
- Tell us about access, such as stairs, a lift or high-level joints
Get 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
What the job involves on each surface
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
Timber door frames
Doors face weather and wear, so their mastic can fail sooner. It’s renewed by hand.
What sand mastic looks like in Barns of Claverhouse
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. Dundee sits on the north bank of the Tay, and much of its older housing is sandstone tenements, so the mastic around older windows and doors on walls facing the water can take plenty of weather.
Schools such as Baldragon Academy are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. If you live in an older home near Mains Parish Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Barns of Claverhouse is about 2 miles north of Dundee, in Dundee. Every kind of property in Barns of Claverhouse can book us for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. 50 places in Dundee are on our list.
All of DD3 is within our area for sand mastic, from the main roads to the quietest streets. Neighbouring places we cover for sand mastic include Claverhouse (1 mile south), Mill of Mains (1 mile south), Inveraldie (1 mile north), Strathmartine (2 miles west) and Balgowan (2 miles west). Within a short drive, we also cover Broughty Ferry (4 miles south-east), Monifieth (5 miles east), Blackness (3 miles south-west), Barnhill (4 miles south-east), Logie (3 miles south-west) and Lochee (3 miles south-west).
Local landmarks in Barns of Claverhouse
Barns of Claverhouse’s nearest station is Dundee station, roughly 3.3 miles south. Nearby you’ll also find Wellgate Centre (2.8 miles south) and Maryfield Hospital (2 miles south). The countryside around Barns of Claverhouse includes Trottick Mill Ponds and Balgay Hill.
What affects the quote in Barns of Claverhouse
You will get a clear quote before any work starts. It takes into account:
- Whether there’s mould to deal with
- The old material and how stubborn it is
- Which sealant suits the joint
- The number and length of the joints
Combining jobs into one visit generally makes better use of the time than several visits, so tell us about everything that needs sealing. We’ll give you a clear price for the lot.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- The type of property
- Whether it has been sealed before
- How many joints, rooms or windows are involved
- Where the job is, and your postcode
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.