Dumfries and Galloway · Scotland
Window & door mastic in Gretna, Dumfries and Galloway
We cover Gretna for mastic around window and door frames, sills and patio doors. Old sealant removed completely, joints prepared properly and a 12-month guarantee.
- Draughty joints inside around the window
- Cold air getting in at the frame edge
- Mastic that has split away from the wall
How we handle window mastic in Gretna
Frames and walls do not move together. Plastic and aluminium frames move with the temperature, while masonry stays fairly still. That’s why the joint needs a flexible, low-modulus sealant rather than something rigid. Typical jobs include draughts coming in around windows and doors and old mastic that has gone black or come away, on window sills, composite doors and aluminium frames.
Many older Scottish homes still have timber windows set into stone walls. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
You are covered for a year from the day we finish. If there’s a problem with it, please send an email to info@mrmastic.co.uk.
- Place
- Gretna (DG16)
- Region
- Dumfries and Galloway
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What the job involves on each surface
Composite doors
Front doors take the weather head on. Those corners get the most care.
Aluminium frames
Coated aluminium needs a compatible sealant and we avoid acetoxy silicones, which can react with some metals. We use a neutral-cure product.
How the visit works
Every visit runs the same way: we look at the joints together, protect the area around them, do the work and tidy away. Most jobs take a few hours for a few frames, or a day or more for a whole house. Outdoor work around Gretna depends on the weather, as sealant needs a dry surface, so external jobs may need to move if the day turns wet. Work indoors is not affected.
- We start by checking each window and door with you.
- The old mastic is cut out and the surfaces cleaned back.
- We fit backing rod in deep gaps so the sealant is the right depth.
- New exterior sealant goes on in a matching colour and is tooled smooth.
- Every joint is checked before we leave.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Mention any parking rules near the property
- Mention any tricky access
Getting a quote
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and add pictures by email if you can.
Related advice
Leave it or put it right?
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that is needed. Problems with the glass or gaskets are for a window company, and we will say so. In an older home around Gretna, damp from a failed joint can get into timber and plaster, which is a far bigger job than the sealant.
What it costs depends on the size of the job, how hard the old material is to remove and how easy the joints are to reach. You will have a clear quote before any work starts, so you know where you stand.
What you get with us
- Tidy, careful work
- Experience in homes, commercial sites and hotels
- Trusted Arbo and Everbuild sealants
- Every job guaranteed for a year
See what affects the cost or our reviews.
DIY versus a professional finish
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Paint up to the joint, not over it
- Wash the frames with mild soapy water
- Air rooms to keep condensation down around windows
- Clear any debris from frame drain holes
Keep sill grooves and drainage slots clear, so rain drains out rather than building up at the sealant.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so early resealing is worth it.
Windows and doors in Gretna
Gretna is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That’s hard on the mastic around window and door frames, especially on the side facing the sea. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
If you live in an older home near St Andrew's Church of Scotland, frames set in older brick or stone need a sealant that suits the wall as well as the frame. For landlords with property near Gretna Green station, renewing tired window mastic between tenants heads off draught and damp complaints.
Gretna is in Dumfries and Galloway. Every kind of property in Gretna can book us for window mastic. Every job comes with our one-year guarantee. 138 places in Dumfries and Galloway are on our list. We also work in Edinburgh, around 66 miles away.
Every address in DG16 is within our area for window mastic. If you need window mastic at a property on Central Avenue, Graitney and Kirtle Place or anywhere close by, our applicators can take on the job. Other places close to Gretna include Gretna Green (1 mile north), Springfield (1 mile north) and Kirkpatrick-Fleming (4 miles north-west). Within a short drive, we also cover Annan (7 miles west), Lockerbie (14 miles north-west), Langholm (11 miles north), Eastriggs (4 miles west) and Ecclefechan (9 miles north-west).
Around Gretna
The nearest railway station is Gretna Green station, about 0.5 miles north of the centre. Other landmarks nearby include Gretna Green Story Exhibition (0.8 miles north).
Quotes for window mastic in Gretna
The quote reflects the job in front of us. We look at:
- How many rooms, windows or areas are involved
- The product the joint needs
- Whether old sealant or filler has to be cut out
- Whether the work is at height
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Asking for a quote
To make quoting easier, let us know:
- What the problem is, such as mould, gaps, leaks or cracking
- The type of property
- Whether it has been sealed before
- Roughly how big the job is
To get a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
When it is not the sealant
In fairness, some problems need a different trade:
- Draughts through the window seals rather than the frame
- Faulty window hardware
- Rotten timber, which needs a joiner first
If in doubt, email us at info@mrmastic.co.uk and we’ll say what we think.
What we seal
- Patio & French doors
- uPVC windows
- Window sills
- Aluminium frames
- Composite doors
- Timber windows & doors
Common questions in Gretna
Can you help a landlord with a rental near Gretna Green 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.
Will you come out to Gretna?
Yes, we do. We work across all of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
How many windows can you do in a day?
It depends on access, the old mastic and the size of the frames. You will know the timing when we quote.
When is the sealant fully cured?
That depends on the sealant used, so follow the cure time we give you.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Where are you based?
We work from Crawley. Our applicators cover Gretna, along with the rest of our area.
Will new mastic stop draughts?
It will if the frame joint is the problem. We check where the draught is before any work starts.
Will you leave a mess?
Tidy work is part of the job. Nearby surfaces are protected.