Midlothian · Scotland
Roslin Window Mastic
Mastic around window and door frames, sills and patio doors in Roslin, with a one-year guarantee on every job. Call for a quick quote.
- Draughty joints inside around the window
- Untidy mastic left by window fitters
- Water coming in at the bottom corners of a door
Window mastic for homes and businesses in Roslin
Every window and door frame has a gap around it, and mastic is what closes it. Once that seal fails, wind and rain find the gap. Our applicators cut it out and replace it with a flexible, weatherproof sealant. We work on uPVC windows, patio & French doors and composite doors, and common reasons people get in touch are rain getting in at the frame or under the sill and a bead that doesn’t match the frame.
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.
Big or small, it’s backed by our one-year guarantee in Roslin and across Midlothian.
- Where
- Roslin (EH25)
- Wider area
- Midlothian
- Guarantee
- One year on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
How the visit works
There’s no need to move everything out before we come, only the area right around the joints. We protect the rest, and the job takes a few hours for a handful of frames, longer for a whole house for a typical job. In smaller Scottish places, parking is normally less of an issue than access and distance. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- First, we confirm safe access to each frame.
- All the failed sealant is cut away.
- 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.
Getting ready for the visit
- Plan for the work area to be out of bounds to pets and children
- For business premises, tell us about site rules or sign-in
- Tell us about any previous sealing or DIY attempts
Ask for a quote
Want a quote for window mastic? Please send an email to info@mrmastic.co.uk with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Towns and villages near Roslin
What else we do in Roslin
Looking after it afterwards
Looking after new joints is easy:
- Air rooms to keep condensation down around windows
- Use gentle cleaners on frames and sealant
- Paint up to the joint, not over it
- Check the mastic once a year
Clean the frames with mild soapy water, and avoid solvent cleaners on the sealant.
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.
What happens if it’s left?
Not every sealant suits a window. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. An exterior, low-modulus sealant stays flexible in sun and frost. In a place like Roslin, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
Leaving a failed joint normally makes the job bigger, not smaller. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
Why choose Mr Mastic in Roslin
- 180+ five-star Google reviews
- Full insurance on every job
- Old sealant always removed completely
- Colour agreed with you before we start
See what affects the cost or our reviews.
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- Soft or decayed wood in the frame
- Faulty window hardware
- A failed sealed unit that has misted up
If you are not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer.
Joints and surfaces we work on
- Composite doors
- Patio & French doors
- Window sills
- Timber windows & doors
- uPVC windows
- Aluminium frames
What affects the cost of window mastic
Your quote is based on your job. We take into account:
- How easy the joints are to reach
- How many areas need sealing
- The number and length of the joints
- Any mould that needs treating
Homes and businesses are quoted the same way: how much there is to do, how we reach it and what it needs, along with when we can work on site. Call for a quick quote and we’ll explain what it covers.
Asking for a quote
To help us quote quickly, please include:
- If it’s domestic, commercial or a hotel
- A few photos by email, if you can
- The problem you’ve noticed
- Where the property is
There’s no standard price list, because every job is different. Instead, your job gets its own clear quote. To arrange one, drop us a line at info@mrmastic.co.uk.
DIY sealant or a professional job?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. Everything old must be removed first.
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
Roslin: your questions answered
Can you do window mastic in Roslin?
Yes. We work across all of Scotland, and Roslin is part of that. You can drop us a line at info@mrmastic.co.uk and tell us what needs doing.
Is Roslin within the area you cover?
Yes. Roslin is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Can you seal the gap between the frame and the plaster indoors?
Yes. Indoors, we seal between the frame and the plaster or reveal, using a paintable sealant if you want to decorate.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint before resealing.
Can tenants book the work?
We are happy to deal with the tenant, landlord or agent. Get your landlord’s agreement first.
What information do you need?
Just the basics: where it is, what you’ve noticed and how we reach it. After that, simply send an email to info@mrmastic.co.uk.
Does the work come with a guarantee?
Yes, for 12 months. Keeping drainage clear and checking the joints yearly helps them last.
How the job changes by surface
uPVC windows
Plastic frames move a lot between a hot afternoon and a cold night, so the joint needs a low-modulus sealant that stays flexible. White is the usual colour, with brown, anthracite grey and black for coloured frames.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
Windows and doors in Roslin
Historic houses like Melville Castle (about 3.4 miles north-east) are a reminder that the area around Roslin has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that.
Melville Castle, about 3.4 miles north-east, is one of the historic houses in the wider area around Roslin, and older homes nearby need a sealant that suits their walls. If you look after a building such as Lasswade High School Centre, its window and door frames need their mastic kept sound, just like a home’s. If you let a flat or house near Eskbank station, renewing tired window mastic between tenants heads off draught and damp complaints.
Roslin is about 3 miles north-east of Penicuik, in Midlothian. Whether you are in the middle of Roslin or further out, window mastic is available for homes and businesses alike, from flats and houses to offices and hotels. 33 places in Midlothian are on our list, large and small. Our Edinburgh page covers work nearby, about 6 miles away.
All of EH25 is within our area for window mastic, from the main roads to the quietest streets. Streets in the area include Main Street, Station Road and Widnell Square, and we cover them all. Main roads around Roslin include the B7003, so getting to you is simple. Other places close to Roslin include Bilston (1 mile north-west), Rosewell (1 mile east), Auchendinny (1 mile south-west), Loanhead (1 mile north) and Polton (2 miles east). Further out, we also cover Bonnyrigg (3 miles east), Dalkeith (5 miles north-east), Penicuik (3 miles south-west), Gorebridge (5 miles east), Newtongrange (4 miles east) and Mayfield (5 miles east).
Near you in Roslin
Roslin’s nearest station is Eskbank station, roughly 3.7 miles north-east of the centre. Well-known places in the area include Princess Margaret Rose Orthopaedic Hospital (3 miles north) and Glencorse Museum (1.6 miles south-west). For a walk, there’s Edgelaw Reservoir and The New Leaf Co-op.