Dundee · Scotland
Downfield Window Mastic
Professional window mastic in and around Downfield, with old sealant always removed completely.
- Old mastic that has gone black or come away
- Whistling draughts around closed windows
- Hard, cracked sealant around windows
Windows and doors in Downfield
Downfield is within about 3 miles of 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 window and door frames, which can dry out and crack sooner where a building faces the weather. With historic houses such as Camperdown House (about 1.9 miles west) nearby, there’s older building stock in the area around Downfield as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Historic houses such as Camperdown House, about 1.9 miles west, show how far back building around Downfield goes, and older homes nearby need a sealant that suits their walls. If you let a flat or house near Dundee station, renewing tired window mastic between tenants heads off draught and damp complaints.
Downfield is about 1 mile north-west of Dundee, in Dundee. Across the DD3 area, we cover window mastic for homes and businesses. Our area takes in 50 places across Dundee, large and small.
We cover every part of the DD3 and DD2 postcode area for window mastic. You will find streets such as Cloan Road, Bruce Road and Clive Road, all of which we cover. Other places close to Downfield include Balgowan (1 mile north), Dundee (1 mile south-east), Woodside (1 mile south-east), Claverhouse (1 mile east) and Mill of Mains (1 mile east). Within a short drive, we also cover Broughty Ferry (5 miles east), Monifieth (6 miles east), Barnhill (5 miles east), Whitfield (3 miles east), Douglas (3 miles east) and Craigiebank (3 miles south-east). Downfield is one of the larger places we cover in Dundee.
Near you in Downfield
Around Downfield, our work takes us to homes and buildings near Dudhope Park, Scottish School of Contemporary Dance and Cox Branch Library. Downfield’s nearest station is Dundee station, roughly 2.3 miles south of the centre. A little further out are King's Cross Hospital (0.9 miles south) and Mains Castle (1.4 miles east). For a walk, there’s Trottick Mill Ponds and Balgay Hill.
Window mastic for homes and businesses in Downfield
There are two joints on most windows. The external joint is the weather seal; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. Common call-outs are for gaps where the sill meets the wall and sealant in the wrong colour for the frame, across window sills, aluminium frames and uPVC windows.
In a Scottish city, many flats have windows two, three or four floors up, where failing mastic is easy to miss. For a flat in Downfield, access is the first thing to plan.
You get a 12-month guarantee, the same in Downfield as everywhere else we work.
- Place
- Downfield (DD3, DD2)
- Region
- Dundee
- Cover
- One year on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Keeping the joints in good condition
Aftercare is simple:
- Wipe condensation off the frames
- Clean frames with a soft cloth and soapy water
- Clear any debris from frame drain holes
- Do not paint over the silicone
Keep the new mastic undisturbed while it cures, for as long as we advise. Don’t point a pressure washer at the joints.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
Nearby places to Downfield
Other services in Downfield
What happens on the day
Once we’re on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a few hours for a few frames, or a day or more for a whole house. Inside a flat in Downfield, the job is planned with you; outside, shared parts may need the factor or other owners involved. Tell us which applies when you book.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
How to prepare
- Let us know if you’ve seen damp or leaks
- Tell us if parking is tricky
- Mention if the joints have been sealed before
Getting a quote
Getting a quote is simple: tell us what needs doing and where, and roughly how big it is. A few pictures by email make the job easier to understand.
Read more
For landlords and businesses
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
Landlords and letting agents in Downfield can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for before the next move-in.
Common questions in Downfield
How do repairs to the shared parts of a tenement in Downfield get organised?
The owners of the flats generally agree repairs to shared parts like the roof and outside walls, and many buildings have a factor to arrange it. Where the title deeds are silent, the Tenements (Scotland) Act 2004 fills the gaps. Windows often belong to the individual flat, but it’s worth checking your deeds.
Is window mastic in a coastal place like Downfield any different?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Can you seal over the old sealant?
No. The old sealant always comes out first.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you when we finish.
Will resealing my frames help with draughts?
If the draught is coming in around the frame, yes. If it’s coming through the window seals, we’ll tell you.
Can you reach windows above the ground floor?
Yes, where it’s safe. For high or awkward windows, we’ll tell you what access is needed.
Can you get sealant to suit coloured frames?
Yes. We can use white, brown, anthracite grey, black or clear.
Can you quote for more than one area?
Yes, we can. Several rooms, windows or areas can go on one quote.
Leave it or put it right?
Not every sealant suits a window. Decorators’ caulk and bathroom silicone aren’t designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Wind-driven rain gets into any failed joint on the outside of a city building, and in Downfield, damp can spread through stone and plaster before anyone sees it.
A few things move the cost up or down: the old material and how easily it comes out, any mould to treat, and whether the work is at height. We take all of that into account in your quote.
What you get with us
- ARBOMaster approved applicator
- Sanitary silicone with an anti-fungal additive in wet areas
- Sealant colour chosen to suit
- Colour agreed with you before work begins
See what affects the cost and what customers say.
Can I do it myself?
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. Everything old must be removed first.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Do you need window mastic in Downfield?
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. If the sealant can’t stretch, it splits.
It’s worth asking for a quote if you see:
- A bead that does not match the frame
- Hard, cracked sealant around windows
- Damp patches on the reveal after heavy rain
- Mastic that is falling out in pieces
Schools such as Lawside Academy are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
What to look for in a quote
- How the joint is cleaned and prepared
- Whether they seal over old material or remove it
- Whether the sealant suits the joint
- Who turns up on the day
What affects the cost of window mastic
We quote each job individually. These are the things that affect it:
- Any working-time requirements on site
- How many rooms, windows or areas are involved
- Whether the work is at height
- The size of the job
We don’t show prices on the website, because each job is priced on what it involves. Call for a quick quote and we’ll talk you through it.
What to tell us for a quote
To help us quote quickly, please include:
- How we’d reach the joints
- Where the job is, and your postcode
- The rough size of the job
- The problem you’ve noticed
We don’t publish a price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, drop us a line at info@mrmastic.co.uk.