South Lanarkshire · Scotland
Window & door mastic in Broughton, South Lanarkshire
Professional window mastic in and around Broughton, with every bit of old sealant taken out first.
- Rushed sealant from a window installation
- Whistling draughts around closed windows
- Cracked sealant at the sill ends
Window mastic in Broughton
Behind a thin line of old mastic there’s sometimes a deep void. Packing it solid with sealant gives a joint that can’t flex, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. If you have untidy mastic left by window fitters and old mastic that has gone black or come away, we can help, whatever the surface.
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.
You get a one-year guarantee, the same in Broughton as everywhere else we work.
- Location
- Broughton (ML12)
- Region
- South Lanarkshire
- Cover
- A year, on every job
- Quotes
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Broughton questions
Is there a guarantee on window mastic in Broughton?
All our work, in Broughton and everywhere else, comes with a 12-month guarantee. We’re fully insured, and an ARBOMaster approved applicator.
Is Broughton within the area you cover?
Yes. Broughton 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.
Can landlords and businesses book you?
Yes. As well as householders, we work for landlords, agents, businesses and hotels.
Which products do you use?
Each joint gets the product that suits it. Movement, water and weather all affect the choice.
How many windows can you do in a day?
Allow most of a day for a typical house, less for a few frames. Access and how stubborn the old mastic is affect the time most.
Will it make a mess?
We keep the work tidy. Nearby surfaces are protected.
Do you work on first-floor windows?
Normally, yes. Access is planned before we start, so mention the height and anything in the way.
Are you fully insured?
Yes. We are fully insured.
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Avoid harsh chemicals near the mastic
- Air rooms to keep condensation down around windows
- Look round the frames every year or so
- Keep paint and stain on wooden frames in good order
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
A failed joint lets water into the wall a little at a time. Often the first sign is a damp patch inside or flaking paint on the reveal. Early resealing stops it reaching that point.
How the job changes by surface
uPVC windows
uPVC expands and contracts noticeably with temperature, so we use a flexible, low-modulus sealant. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Patio & French doors
Not every patio door leak is a mastic problem: blocked drain slots, worn brush seals and threshold details can let water in too. We look for the cause first.
What affects the quote in Broughton
Some jobs are bigger than they look, and some smaller. The main factors:
- How many areas need sealing
- Whether the work is at height
- Whether there’s mould to deal with
- Whether old sealant or filler has to be cut out
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. You will know the price before we begin.
Helping us quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- Access, such as stairs, a lift or height
- Whether it has been sealed before
- What’s wrong with the joints now
- If it’s domestic, commercial or a hotel
A good description makes for an accurate quote. Tell us where the job is, what’s wrong and how much there is, and email photos if that is easy.
What we do, step by step
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes a few hours for a few frames, or a day or more for a whole house, including the tidy-up. Around Broughton, distance and access matter more than parking. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- On commercial sites, let us know about site rules
- Move anything stored near the joints
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we will talk you through what we’d do. When it suits you, email us at info@mrmastic.co.uk.
Read more
What sealant work cannot fix
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Soft or decayed wood in the frame
- Damp coming through the wall itself rather than the frame joint
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think before you book.
Joints and surfaces we work on
- Aluminium frames
- Patio & French doors
- Window sills
- Composite doors
- uPVC windows
- Timber windows & doors
Signs you need window mastic in Broughton
Water runs down the glass onto the sill, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
Look out for these signs:
- Hard, cracked sealant around windows
- Cold air getting in at the frame edge
- Untidy mastic left by window fitters
- White mastic on grey or black frames
For an older house near a landmark such as Broughton Parish Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall.
Before you book anyone
- How much experience the applicator has
- Whether VAT is included
- What insurance they hold
- How long the guarantee is
DIY versus a professional finish
A careful DIYer can reseal a simple joint, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
A DIY attempt does not rule out a professional job. We cut it out and start again.
Broughton homes and the weather
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
Around Broughton, as everywhere, window mastic is only as good as the preparation behind it.
Broughton is about 17 miles south-west of Penicuik, in South Lanarkshire. Whether you’re in the middle of Broughton or further out, we cover window mastic for every kind of property. Broughton is one of 139 towns and villages in South Lanarkshire we cover. We also work in Edinburgh, about 24 miles from Broughton.
Jobs for window mastic in ML12 is quoted and booked the same way as anywhere else. If you need window mastic at a property on Woodilee and Hawdene or a nearby road, our applicators can take on the job. Close by, we work in Skirling (3 miles north-west), Candy Mill (4 miles north-west), Biggar (4 miles west), Kirkurd (5 miles north) and Elsrickle (5 miles north-west). Further out, we also cover Lanark (15 miles west), Forth (15 miles north-west), Symington (7 miles west) and Carnwath (10 miles north-west).
What’s near Broughton
Nearby you’ll also find Drumelzier Castle (1.9 miles south) and Kello Hospital (4.4 miles west). Open spaces near Broughton include Drumelzier Law.