Scottish Borders · Scotland
Lilliesleaf Window Mastic
Mastic around window and door frames, sills and patio doors in Lilliesleaf, with a 12-month guarantee on every job. Call for a quick quote.
- Damp patches on the reveal after heavy rain
- A bead that doesn’t match the frame
- Draughty joints inside around the window
Why it’s worth doing now in Lilliesleaf
A quick bead over the top of old mastic looks like an easy fix, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. Proper resealing starts with removing the old joint. Around Lilliesleaf, water from a failed joint in an older stone home can soak into timber and plaster.
What you pay reflects the work, not guesswork. That’s why we ask a few questions first and agree the price before starting.
Why choose Mr Mastic in Lilliesleaf
- Anti-fungal silicone where joints get wet
- Approved under the ARBOMaster scheme
- 4.9 on Google from 180+ five-star reviews
- We leave the area clean and tidy
How we handle window mastic in Lilliesleaf
There are two joints on most windows. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. We seal one or both, depending on what’s needed. We’re often asked to deal with sealant in the wrong colour for the frame and cracked internal joints between frame and plaster, across uPVC windows, aluminium frames and patio & French doors.
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.
Each job carries a 12-month guarantee, large or small.
- Where
- Lilliesleaf (TD6)
- Wider area
- Scottish Borders
- Guarantee
- A year, on every job
- Price
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Keeping the joints in good condition
Simple care keeps the joints in good condition. Our advice:
- Walk round the house once a year and look at the joints
- Don’t paint over the silicone
- Keep solvents and bleach off the sealant
- Clear any debris from frame drain holes
Try not to touch the new joint while it cures, for as long as we advise. Keep jet washers away from the frames.
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.
What window mastic looks like in Lilliesleaf
Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Around Lilliesleaf, as everywhere, window mastic is only as good as the preparation behind it.
Lilliesleaf is about 7 miles north of Hawick, in the Scottish Borders. Lilliesleaf gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Lilliesleaf is one of 89 places in the Scottish Borders where we work. Our Edinburgh page covers work nearby, about 35 miles away.
We cover every part of TD6 for window mastic. Whether your property is on Muselie Drive and St Dunstan or anywhere close by, we can help. Being close to the B6359, Lilliesleaf is simple for us to get to for window mastic. We also cover Midlem (2 miles north), Belses (2 miles east), Bowden (4 miles north), Ashkirk (4 miles south-west) and Selkirk (4 miles north-west). Larger places within reach include Galashiels (7 miles north), Hawick (7 miles south), Kelso (14 miles north-east), Jedburgh (8 miles east), Wilton (7 miles south) and Innerleithen (14 miles north-west).
Local landmarks in Lilliesleaf
A little further out are Castle Holydean (3.3 miles north) and Dingleton Hospital (5.2 miles north). For a walk, there’s Hare and Dunhog Mosses and Haining Loch.
More services for Lilliesleaf
What sealant work cannot fix
It helps to know what we cannot do:
- Condensation trapped between the panes
- Faulty window hardware
- Penetrating damp from a failed cavity tray or render
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly before booking.
Surfaces we seal
- Aluminium frames
- Window sills
- Timber windows & doors
- Patio & French doors
- uPVC windows
- Composite doors
DIY versus a professional finish
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is matched to the joint and its conditions, and the work is guaranteed for a year.
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.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take a morning for a couple of windows and a door. Outdoor work around Lilliesleaf depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- First, we go round the frames with you and agree the list.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Tell us about any previous sealing or DIY attempts
- Let us know if you’ve seen damp or leaks
- Move anything stored near the joints
Getting a quote
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
Advice
Common problems we fix in Lilliesleaf
Joint shape matters as much as the product. A skim of sealant over a wide gap soon tears, while a joint packed solid cannot stretch. That is what backing rod is for.
If you can see any of these, it’s time to have the joints looked at:
- Draughty joints inside around the window
- Gaps where the sill meets the wall
- Hard, cracked sealant around windows
- Rushed sealant from a window installation
For jobs in and around Lilliesleaf, choosing the right material for each joint is as important as a tidy finish.
Comparing quotes
- What product goes in the joint
- What the quote includes, VAT included or not
- Whether you can choose the colour
- What the cure time is
Landlords, agents and businesses in Lilliesleaf
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we will quote.
Lilliesleaf questions
Is Lilliesleaf in your area for window mastic?
Yes. We work across all of Scotland, and Lilliesleaf is part of that. You can email us at info@mrmastic.co.uk and let us know what needs doing.
Will you come out to Lilliesleaf?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. Longer journeys are simply planned in advance.
Is it OK to seal over old sealant?
No, and we never do. It can look neat for a few weeks, but the new layer lifts away from the old one. Removing the old sealant completely is the only lasting way.
Can you do the inside joint as well?
Yes. Inside, the joint between frame and plaster is sealed neatly, using a paintable sealant if you want to decorate.
Do you take out the old sealant first?
Yes. We cut out all the old sealant and clean the joint before applying anything new.
Where do you work from?
We’re a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
What does window mastic cost?
It depends on the job, so we quote each one individually. To get one, email us at info@mrmastic.co.uk with a short description of the job.
Can I do it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.