Midlothian · Scotland
Lasswade Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Lasswade, with a 12-month guarantee on every job. Ask us for a quote.
- Gaps between timber frames and stone or brick
- Draughty sash windows at the surround
- Failed mastic on an exposed elevation
Sand mastic in Lasswade, done properly
Sand mastic is the traditional way to point the gap between a timber window frame and the stone or brick around it. It’s a mix of sand and a linseed-oil-based binder and built up by hand. On older homes, it suits the building far better than silicone. We work on timber door frames, stone surrounds and brick reveals, and the jobs we see most are failed mastic on an exposed elevation and crumbling sand mastic round a window.
In and around a place like Lasswade, homes range from older stone-built cottages to newer houses. Wind-driven rain finds any gap around a frame or sill.
We stand behind the work with a 12-month guarantee, so you’re covered after we’ve gone.
- Place
- Lasswade (EH19, EH18)
- Region
- Midlothian
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
When to call us in Lasswade
Water gets into small cracks in the mastic and pushes it out. Windows facing the weather tend to go first.
Common reasons people contact us include:
- Gaps where the frame meets the masonry
- Draughty sash windows at the surround
- Modern sealant on a period surround
- Gaps round a timber door in stone or brick
Melville Castle, about 0.7 miles north-east, is one of the historic houses in the wider area around Lasswade.
What your quote should include
- Are they insured?
- What the quote includes, VAT included or not
- Which colour the sealant will be
- Is the old sealant removed completely?
Common questions in Lasswade
Do you cover Lasswade for sand mastic?
Yes. Our work covers the whole of Scotland, and Lasswade is part of that. Just email us at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear price.
Will you come out to Lasswade?
Yes, we do. Our work covers the whole of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is it messy?
We keep the work tidy. We protect what’s around the joints, and we clear up when we are done.
Do I need to be at home?
It depends on the job. For work indoors, someone needs to let us in, while outside work can sometimes be arranged differently.
Is it worth trying it myself?
That depends on the joint. High-level, external movement and fire-rated joints are professional jobs.
Are you an approved applicator?
Yes. We’re ARBOMaster approved, the scheme for applicators of Arbo sealants.
What guarantee comes with the work?
All our work has a one-year guarantee.
Do you remove the old sealant?
Always. Sealing over the old bead is the commonest cause of early failure, and it’s something we never do.
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Sashes that need overhauling
- Timber that has rotted
- Broken panes
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
Surfaces we seal
- Period & listed homes
- Timber door frames
- Sash and case windows
- Stone surrounds
- Brick reveals
- Tenement windows
Places near Lasswade
More services for Lasswade
Frames and glazing around Lasswade
With historic houses such as Melville Castle (about 0.7 miles north-east) nearby, there’s older building stock in the area around Lasswade as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
Letting a property close to Eskbank station? Then any sash windows need sound mastic to keep draughts and rain out. Schools such as Lasswade High School Centre are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Lasswade is about 1 mile north-west of Bonnyrigg, in Midlothian. If you need sand mastic in Lasswade, please drop us a line at info@mrmastic.co.uk for a quick quote. We are based in Crawley and cover Midlothian. Our Midlothian coverage runs to 33 places, Lasswade among them.
Here we cover the EH19 and EH18 postcode area for sand mastic. You will find streets such as Green Lane, Church Road and Polton Road, and we cover them all. You will find Lasswade on the A768, which makes it straightforward to reach. Other places close to Lasswade include Bonnyrigg (1 mile south-east), Polton (1 mile south-west), Loanhead (2 miles west), Burdiehouse (2 miles north-west) and Rosewell (2 miles south). We also work in nearby towns such as Penicuik (5 miles south-west), Gorebridge (4 miles south-east), Mayfield (3 miles east), Shawfair (3 miles north), Roslin (3 miles south-west) and Easthouses (3 miles east).
Around Lasswade
Locally, jobs take us to homes and businesses close to Public Library and Drum Park. Lasswade’s nearest station is Eskbank station, about 1.3 miles east. Well-known places in the area include Cameron Toll Shopping Centre (3.5 miles north-west) and Midlothian Community Hospital (1.1 miles east). The countryside around Lasswade includes Blackford Hill and Duddingston Loch.
How we quote for sand mastic
The price is agreed before any work begins. It’s based on:
- Whether old sealant or filler has to be cut out
- Access and height
- When we can work, for business premises
- How many areas need sealing
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all play a part.
What to tell us for a quote
When you call or email, it’s useful to know:
- Access, such as stairs, a lift or height
- Photos by email, if that’s easy
- The rough size of the job
- If someone has resealed it before
There’s no standard price list. Instead, we give you a clear price for your job. To arrange one, send an email to info@mrmastic.co.uk.
Why it’s worth doing now in Lasswade
Gaps round a sash window let in rain and draughts. Water can get to the frame and the masonry, so dealing with it now protects both. In an older home around Lasswade, damp from a failed joint can get into timber and plaster.
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, drop us a line at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
What you get with us
- Old sealant always removed completely
- 20+ years of sealant experience
- Anti-fungal silicone where joints get wet
- Approved under the ARBOMaster scheme
Read our cost guide or what customers say.
Landlord and commercial work in Lasswade
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
We work for letting agents and landlords as well as householders. Sealant work between tenants keeps a property looking cared for.
What we do, step by step
You do not need to clear the whole room or building, only the area right around the joints. We protect the rest, and the job takes a few hours for a single window, longer for several for a typical job. For a place like Lasswade, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- Each surround is checked first.
- We rake out the old mastic and clean the joint.
- We fill deep gaps so the new mastic is not too thick.
- We point the joint with sand mastic by hand.
- The finish is dressed neatly.
Getting ready for the visit
- Tell us if parking is tricky
- Move anything stored near the joints
- On commercial sites, let us know about site rules
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 explain how we’d tackle it. When it suits you, email us at info@mrmastic.co.uk.
Related advice
How the job changes by surface
Timber door frames
Period doors in stone or brick openings are often pointed with sand mastic. The method is the same as for windows.
Brick reveals
An open joint at a brick reveal lets weather in. Renewing the mastic closes it.