Midlothian · Scotland
Sand Mastic in North Middleton
Traditional burnt sand mastic around sash and case windows and doors in stone and brick for homeowners, landlords and businesses in North Middleton. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Modern sealant on a period surround
- Patchy fillers round a sash window
- Failed mastic on an exposed elevation
About our sand mastic in North Middleton
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Like-for-like sand mastic is often the preferred finish. If you have cement or filler used on old window joints that has cracked and silicone on a period window that looks wrong, we can help, on stone surrounds, tenement windows and brick reveals alike.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Exposed frames and sills take the full force of wind-driven rain.
The work is covered for a year after we finish. If anything is not right with it, drop us a line at info@mrmastic.co.uk.
- Place
- North Middleton (EH23)
- Region
- Midlothian
- Cover
- One year on every job
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
DIY sealant or a professional job?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Not every job suits DIY: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Also near North Middleton
What else we do in North Middleton
What sealant work cannot fix
Some problems need a builder, plumber or other trade rather than us:
- Putty and glazing repairs
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
If in doubt, send an email to info@mrmastic.co.uk and we’ll say what we think before booking.
Surfaces we seal
- Sash and case windows
- Period & listed homes
- Brick reveals
- Stone surrounds
- Tenement windows
- Timber door frames
What affects the cost of sand mastic
There’s no set price list. The quote depends on:
- How many areas need sealing
- When we can work, for business premises
- Which sealant suits the joint
- Any mould that needs treating
The cost reflects the work involved, not a rough estimate. That’s why we ask a few questions first.
What we need to know
What to tell us when you ask for a quote:
- Access, such as stairs, a lift or height
- Whether it has been sealed before
- Where the job is, and your postcode
- The type of property
If you are in North Middleton and need sand mastic, send an email to info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
What we’re called out for in North Middleton
Shallow joints are a common cause. Mastic that’s too thin cracks and drops out, which is why we pack deep voids first and get the depth right.
Common reasons people contact us include:
- Weathered mastic on the most exposed windows
- Draughty sash windows at the surround
- Window mastic to renew ahead of painting
- Patchy fillers round a sash window
Rented homes near Gorebridge station change hands often, and cracked sand mastic around sash windows lets in the draughts tenants complain about.
What your quote should include
- Are they insured?
- Who does the work, and how experienced they are
- When the joint can take water or movement
- What the quote includes, VAT included or not
Aftercare tips
How long the joints last depends on use and care. We suggest:
- Ask a joiner to look at soft timber first
- Don’t paint over the new mastic
- Look over the window mastic once a year
- Renew mastic before redecorating the windows
Leave the new mastic alone while it firms up. It skins over quickly, but takes longer to harden fully.
It’s best to renew mastic before painting the windows. Paint over cracked mastic only covers it up.
Why act early in North Middleton
Filling over old, loose mastic doesn’t last. Raking out and preparing the joint gives it a sound base so the new work lasts. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
Leaving a failed joint generally makes the job bigger, not smaller, as water and mould keep getting in. If you are not sure whether it needs doing, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
What you get with us
- Fully insured
- 180+ five-star Google reviews
- One-year guarantee on every job
- Experience in homes, commercial sites and hotels
How it works
Good joint work is mostly preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. In total, it usually takes anything from a few hours to a full day, depending on how many windows. In smaller Scottish places, parking is generally less of an issue than access and distance. Tell us how to find the property and how to reach the work.
- Each surround is checked first.
- The joint is raked out and cleaned.
- 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.
How to prepare
- Clear the area around the work
- Let us know about earlier repairs to the joints
- Mention any parking rules near the property
How to get a quote
There’s no standard price list. Instead, your job gets its own clear quote. To arrange one, drop us a line at info@mrmastic.co.uk.
Related advice
North Middleton homes and the weather
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home 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.
Homes close to Borthwick Church include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame.
North Middleton is about 5 miles south-east of Bonnyrigg, in Midlothian. Homes, rented property, offices and hotels in North Middleton is covered for sand mastic, old or new, large or small. Every job comes with our 12-month guarantee. North Middleton is one of 33 places in Midlothian we cover for sand mastic. There’s also a page for Edinburgh, about 11 miles away.
Every address in EH23 is within our area for sand mastic. Sand mastic is available to properties on Borthwick Castle Place, Cleuch Road and Borthwick Castle Terrace and the roads around them. Neighbouring places we cover for sand mastic include Arniston (1 mile north-west), Birkenside (1 mile north-west), Gorebridge (2 miles north-west), Carrington (3 miles west) and Gowkshill (3 miles north-west). Further out, we also cover Bonnyrigg (5 miles north-west), Dalkeith (5 miles north), Penicuik (8 miles west), Loanhead (7 miles north-west), Newtongrange (4 miles north-west) and Shawfair (8 miles north).
Around North Middleton
North Middleton’s nearest station is Gorebridge station, about 1.6 miles north-west of the centre. Well-known places in the area include Catcune Castle (1 mile north-west) and Midlothian Community Hospital (4.9 miles north-west). Green spaces nearby include Edgelaw Reservoir.
Common questions in North Middleton
Is North Middleton in your area for sand mastic?
Yes. Our work covers the whole of Scotland, and North Middleton is part of that. You can send an email to info@mrmastic.co.uk and let us know what needs doing, and we will give you a clear price.
Do you cover smaller places like North Middleton?
Yes, North Middleton is covered. Our work covers the whole of Scotland, from towns to the smallest places. Longer journeys are simply planned in advance.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
What’s sand mastic made of?
It’s a mix of sand and a linseed-oil-based binder. It’s built up in the joint by hand and shaped to suit the surround.
Can you replace silicone on a period window with sand mastic?
Often, yes. With the silicone removed and the joint cleaned, sand mastic is applied by hand.
Is it messy?
No. We protect the surfaces around the joints, and we tidy up before we go.
How long does the job take?
As a guide, most jobs take anything from a few hours to a full day, depending on how many windows. Bigger jobs take longer, and we’ll tell you how long to expect.