South Lanarkshire · Scotland
Window & door mastic in Strathaven, South Lanarkshire
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Strathaven. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Untidy mastic left by window fitters
- Cracked or shrunken mastic around the frame
- Old mastic that has gone black or come away
How we handle window mastic in Strathaven
Over two decades of sealing frames has taught us which products suit which walls. We’re ARBOMaster approved and fully insured, and every job is covered by a 12-month guarantee. We’re often asked to deal with draughty joints inside around the window and whistling draughts around closed windows, across window sills, patio & French doors and aluminium frames.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Strathaven (ML10)
- Region
- South Lanarkshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Different surfaces, different methods
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour keeps the clean look.
Timber windows & doors
Older timber windows in stone or brick can suit sand mastic rather than modern sealant. We’ll tell you which suits your home.
Frames and glazing around Strathaven
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
Homes close to East Parish Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Strathaven is about 6 miles south of Hamilton, in South Lanarkshire. From the centre of Strathaven to the outskirts, we cover window mastic for every kind of property, from flats and houses to offices and hotels. Our South Lanarkshire coverage runs to 139 places, Strathaven among them. Glasgow is on our list too, about 15 miles from Strathaven.
We work across ML10 for window mastic. Local streets include Main Street, Station Road and Loudon Street, all of which we cover. If you are just outside Strathaven, we cover Sandford (2 miles south-east), Glassford (2 miles north-east), Chapelton (3 miles north-west), Stonehouse (3 miles east) and Quarter (4 miles north). Within a short drive, we also cover East Kilbride (7 miles north-west), Hamilton (6 miles north), Cambuslang (10 miles north), Uddingston (10 miles north), Blantyre (8 miles north) and Larkhall (5 miles north-east). Strathaven is one of the larger places we cover in South Lanarkshire.
Landmarks near Strathaven
Other landmarks nearby include Strathaven Castle (less than half a mile south) and Stonehouse Hospital (3 miles east).
Why deal with it now?
Draughts and leaks don’t always mean new windows. Where the frames are sound, new mastic usually deals with draughts and leaks at the edges. If we find failed glass units or worn seals, we’ll tell you. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Why Strathaven clients choose us
- 180+ five-star Google reviews
- White, clear, grey or coloured to suit, where the product allows
- Colour agreed with you before we start
- Trusted Arbo and Everbuild sealants
Read how sealant jobs are priced and our reviews.
What else we do in Strathaven
Common problems we fix in Strathaven
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the masonry beside it stays put. A sealant that cannot keep up eventually tears.
Common reasons people contact us include:
- Rain getting in at the frame or under the sill
- Draughts coming in around windows and doors
- Draughty joints inside around the window
- Gaps left after new windows were fitted
If you look after a building such as Strathaven Academy, the mastic around its windows and doors needs looking after like any other building’s.
Questions to ask before booking
- What happens if they find a problem under the old sealant
- Is the old sealant removed completely?
- How much experience the applicator has
- Whether the sealant suits the joint
When something else is needed
Honest advice matters more to us than a booking, so here’s what new sealant will not do:
- Soft or decayed wood in the frame
- Penetrating damp from a failed cavity tray or render
- Misting between the panes of a double-glazed unit (that needs a new unit)
If in doubt, email us at info@mrmastic.co.uk and we’ll say what we think before booking.
Surfaces we seal
- Timber windows & doors
- uPVC windows
- Composite doors
- Aluminium frames
- Window sills
- Patio & French doors
How it works
There’s no need to move everything out, just the space around the work. Everything nearby is protected, and the job takes a morning for a couple of windows and a door for a typical job. For a place like Strathaven, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- We check each frame and agree which ones need doing.
- We remove the old mastic and clean the frame and the wall.
- Where gaps are deep, backing rod goes in first.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- We clear up and check every joint is fully closed.
Getting ready for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any previous sealing or DIY attempts
- Let us know about stairs, lifts or work at height
Get a quote
Need a quote? Please email us at info@mrmastic.co.uk with a few details. We’ll explain what we’d do and give you a clear price before any work starts.
Read more
What affects the quote in Strathaven
The quote reflects the job in front of us. We look at:
- Which sealant suits the joint
- Whether the work is at height
- The number of rooms or windows
- Any mould that needs treating
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please email us at info@mrmastic.co.uk.
What to tell us for a quote
Photos by email are helpful but not essential. Try to tell us:
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
- Whether it’s a home or a business
- The address or postcode of the job
Getting a quote is simple: let us know what needs doing and where. Photos by email help us understand the job.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Keep drainage slots and sill grooves clear
- Keep solvents and bleach off the sealant
- Paint up to the joint, not over it
- Clean frames with a soft cloth and soapy water
Most silicone sealants will not take paint, so mention any painting plans before we start. There are paintable sealants for joints that need it.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Sorting cracked mastic early means the joint is sound before the bad weather.
FAQs for Strathaven
Do you cover smaller places like Strathaven?
Yes. Strathaven is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
Is window mastic in Strathaven guaranteed?
All our work, in Strathaven and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is the new sealant paintable?
Silicone generally will not take paint. Let us know beforehand, and we will use a paintable product where it suits.
Should I try DIY first?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Will there be a smell?
It depends on the product. Some products have a noticeable smell, others very little.
Will you leave a mess?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Will resealing my frames help with draughts?
Yes, where the draught is at the frame edge. We check where the draught is before any work starts.
Do you work for letting agents?
Yes, regularly. Several properties can be quoted together.