Dumfries and Galloway · Scotland
Gretna Sand Mastic
Sand mastic for Gretna and the surrounding area: careful preparation, the right product and tidy work. Call for a quick quote.
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
- Modern sealant on a period surround
About our sand mastic in Gretna
Across Gretna, we renew sand mastic around sash and case windows. Every joint is cleaned out and filled by hand for a neat, traditional finish. If you’re dealing with window mastic to renew ahead of painting and weathered mastic on the most exposed windows, we can help.
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.
Big or small, you get the same one-year guarantee.
- Where
- Gretna (DG16)
- Wider area
- Dumfries and Galloway
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Leave it or put it right?
Draughts round a sash window are not always the sashes. Open mastic joints round the box can let air in, and renewing the mastic closes them. In an older home around Gretna, damp from a failed joint can get into timber and plaster.
No two jobs are quite the same, so each one gets its own quote. The number of joints, how easy they are to reach and the sealant needed all make a difference, and we will explain the quote if you ask.
What you get with us
- Experience in homes, commercial sites and hotels
- 4.9 on Google from 180+ five-star reviews
- Full insurance on every job
- ARBOMaster approved applicator
Read our cost guide or what customers say.
How we quote for sand mastic
Your quote is based on your job. We look at:
- The amount of work
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
- The number of rooms or windows
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
Asking for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Whether it has been sealed before
- Where the property is
- What’s wrong with the joints now
- Photos by email, if that is easy
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. When it suits you, email us at info@mrmastic.co.uk.
What we are called out for in Gretna
Previous repairs in cement or silicone often trap water or crack away. They do not move with the timber and we normally remove them.
It’s worth asking for a quote if you see:
- Crumbling sand mastic round a window
- Mastic worn away on windows facing the weather
- Window mastic to renew ahead of painting
- Draughts and rain around sash boxes
For landlords with property near Gretna Green station, older sash windows in a rental need their mastic kept sound to keep the weather out.
Questions to ask before booking
- How long the guarantee is
- Which colour the sealant will be
- What preparation is included
- What happens if they find a problem under the old sealant
How the visit works
Before we leave, we go over the finished joints with you and tell you how long to leave it. The work normally takes anything from a few hours to a full day, depending on how many windows, depending on the size of the job. In smaller Scottish places, parking is normally less of an issue than access and distance. Let us know how to find you and how to reach the joints.
- 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 finish is dressed so it sits neatly against the stone or brick.
Getting ready for the visit
- On commercial sites, let us know about site rules
- Mention if the joints have been sealed before
- Let us know about stairs, lifts or work at height
Get a quote
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is.
Advice
Sand mastic in Gretna: local notes
Gretna is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces 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.
In the older streets around St Andrew's Church of Scotland, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Gretna is in Dumfries and Galloway. Homes, rented property, offices and hotels in Gretna can book us for sand mastic. Every job comes with our 12-month guarantee. We cover 138 towns and villages across Dumfries and Galloway. Our Edinburgh page covers work nearby, about 66 miles away.
We work across DG16 for sand mastic and the streets around it. Whether your property is on Central Avenue, Graitney and Kirtle Place or a nearby road, we can help. Other places close to Gretna include Gretna Green (1 mile north), Springfield (1 mile north) and Kirkpatrick-Fleming (4 miles north-west). Larger places within reach include Annan (7 miles west), Lockerbie (14 miles north-west), Langholm (11 miles north), Eastriggs (4 miles west) and Ecclefechan (9 miles north-west).
Local landmarks in Gretna
Gretna’s nearest station is Gretna Green station, about 0.5 miles north. Other landmarks nearby include Gretna Green Story Exhibition (0.8 miles north).
When something else is needed
We won’t take on work that will not last, so these are the limits:
- Timber that has rotted
- Planning or listed building consent (your local planning authority decides)
- Cracked or broken glass
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer.
Where we work in Gretna
- Period & listed homes
- Timber door frames
- Stone surrounds
- Sash and case windows
- Brick reveals
- Tenement windows
Your questions about sand mastic in Gretna
Do you cover smaller places like Gretna?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is sand mastic in a coastal place like Gretna any different?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Do you guarantee sand mastic work?
You get our one-year guarantee on every job.
Where is Mr Mastic based?
Mr Mastic is based in Crawley. We cover Gretna and the rest of Dumfries and Galloway.
How long will you be here?
It depends on the size of the job, but most jobs take a few hours for a single window, longer for several. We will tell you when we quote.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
What’s sand mastic made of?
It’s the traditional filler for the joint round timber windows and doors. It’s made with sand and a linseed-oil-based binder.
What does sand mastic cost?
It depends on the job, so we quote each one individually. For a quick quote, send an email to info@mrmastic.co.uk and let us know what needs doing and where.
How to look after the new joints
A little care helps the new joints last. We recommend:
- Ask a joiner to look at soft timber first
- Avoid patching sand mastic with silicone
- Leave the new mastic unpainted
- Find out about consent before window work on a listed home
Don’t run silicone over the new mastic. If you see a crack, ask us to take a look rather than patching it.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens as more mastic falls out.
Surface by surface
Tenement and terrace windows
Upper-floor windows need access planning. Let us know the floor and we’ll confirm access.
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.