Midlothian · Scotland
Auchendinny Sand Mastic
Problem with your window and door surrounds in Auchendinny? We remove the old material, prepare the joints and seal them properly, with a 12-month guarantee.
- Draughts and rain around sash boxes
- Tired mastic found when preparing windows for paint
- Gaps round a timber door in stone or brick
What we cannot put right
It helps to know what we cannot do too:
- Planning or listed building consent (your local planning authority decides)
- Sashes that need overhauling
- Broken panes
If you’re not sure, just send an email to info@mrmastic.co.uk and we will give you a straight answer before booking.
Joints and surfaces we work on
- Timber door frames
- Stone surrounds
- Brick reveals
- Sash and case windows
- Period & listed homes
- Tenement windows
How we handle sand mastic in Auchendinny
Sand mastic suits most period window surrounds. Newer frames usually get a flexible sealant instead, and we’ll talk through which suits your home. We work on stone surrounds, sash and case windows and period & listed homes, and the jobs we see most are old cement repairs round a window that have failed and old sand mastic that has cracked, crumbled or fallen out.
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.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Auchendinny (EH26)
- Region
- Midlothian
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Can I do it myself?
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Sealing over old silicone is the commonest DIY error. New silicone will not bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
Also in Auchendinny
How to look after the new joints
Simple care keeps the joints in good condition. Our advice:
- Ask the planning authority about consent for listed or conservation-area homes
- Keep sills and gutters clear so water drains away
- Keep modern sealant off the mastic
- Look over the window mastic once a year
Don’t run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Good mastic helps keep the frame dry. Once it fails, water can sit against the timber and timber that stays wet can rot.
Frames and glazing around Auchendinny
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. Sash and case windows are common in older Scottish homes, often pointed into the wall with traditional sand mastic.
If you look after a building such as Beeslack Community High School, its window and door frames need their mastic kept sound, just like a home’s. Homes close to Glencorse Parish Church include some older properties, and replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Auchendinny is about 1 mile north-east of Penicuik, in Midlothian. Every kind of property in Auchendinny can book us for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. We cover 33 towns and villages across Midlothian, large and small. There’s also a page for Edinburgh, about 7 miles away.
All of EH26 is covered for sand mastic, from the main roads to the quietest streets. That includes homes and businesses on Glencorse Park, Graham's Road and Old Dalmore Terrace. Close by, we work in Roslin (1 mile north-east), Bilston (2 miles north), Rosewell (2 miles east), Loanhead (3 miles north-east) and Old Pentland (3 miles north). We also work in nearby towns such as Bonnyrigg (4 miles north-east), Dalkeith (6 miles north-east), Gorebridge (6 miles east), Newtongrange (5 miles east), Mayfield (6 miles east) and Shawfair (7 miles north-east).
Landmarks near Auchendinny
Other landmarks nearby include Rosslynlee Hospital (2.2 miles west) and Oldwoodhouselee Castle (within half a mile south-east). Not far away are Edgelaw Reservoir and Castle Law.
Questions from Auchendinny
Do you cover Auchendinny for sand mastic?
Yes, Auchendinny is within the area we cover. Our work covers the whole of Scotland. You can send an email to info@mrmastic.co.uk and let us know what needs doing, and we’ll send you a clear quote.
What guarantee comes with sand mastic in Auchendinny?
All our work, in Auchendinny and everywhere else, comes with a 12-month guarantee. We are also fully insured and ARBOMaster approved.
Are you ARBOMaster approved?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Can you seal over the 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.
Which is right for my windows, sand mastic or modern sealant?
We will help you decide. Sand mastic suits many period homes and newer frames suit modern sealant.
Do you offer different sealant colours?
In most cases you can choose. We’ll tell you which colours the right product comes in.
Do you take out the old sealant first?
Always. Sealing over the old bead is the commonest cause of early failure, so we never do it.
How long does sand mastic take to harden?
It takes a while. The skin forms first, and the full set comes later, and we’ll tell you what to expect.
Why act early in Auchendinny
Draughts round a sash window are not always the sashes. Gaps between the frame and the wall can be just as bad and new mastic seals them. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first and agree the price before starting.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- An ARBOMaster approved applicator
- We leave the area clean and tidy
- Domestic, commercial and hotel work
See our cost guide or what customers say.
The process
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. Most jobs then take a few hours for a single window, longer for several. Somewhere like Auchendinny may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- Large voids are packed out first, so the mastic is not too thick.
- Sand mastic is mixed and applied by hand, then shaped to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
Preparing for the visit
- Mention if the joints have been sealed before
- For indoor joints, keep the area dry beforehand if you can
- For business premises, tell us about site rules or sign-in
Get a quote
We do not publish a price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To get started, drop us a line at info@mrmastic.co.uk.
Read more
What affects the quote in Auchendinny
The quote reflects the job in front of us. We look at:
- The number of rooms or windows
- The type of sealant required
- How easy the joints are to reach
- Any working-time requirements on site
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we’ll go through it with you.
Helping us quote
When you contact us, it’s useful to know:
- Where the job is, and your postcode
- Whether it’s a home or a business
- A few photos by email, if you can
- Any access issues, like height or stairs
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you are ready, drop us a line at info@mrmastic.co.uk.
Surface by surface
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
Tenement and terrace windows
Windows above ground floor need the right access. Tell us the height and we will confirm what’s needed.