Angus · Scotland
Sand mastic for sash & case windows in Letham, Angus
Problem with your window and door surrounds in Letham? We cut out the old, prepare the joints and apply the right sealant, and the work is guaranteed for a year.
- Weathered mastic on the most exposed windows
- Draughty sash windows at the surround
- Mastic dropping out of the joint
Sand mastic in Letham, done properly
A silicone bead around a sash window can look out of place and is not always the right material. Sand mastic gives a finish that matches the age of the house and we can swap the silicone for it. Common call-outs are for weathered mastic on the most exposed windows and gaps between timber frames and stone or brick, on period & listed homes, tenement windows and sash and case windows.
Many older Scottish homes still have timber windows set into stone walls. The sealant has to suit the stone, which rules out acetoxy silicones that can mark or attack it.
Our work is backed for twelve months.
- Location
- Letham (DD8)
- Region
- Angus
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Letham homes and the weather
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. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
If you live in an older home near Old Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Around Letham, as everywhere, sand mastic is only as good as the preparation behind it.
Letham is about 5 miles east of Forfar, in Angus. For sand mastic in and around Letham, please send an email to info@mrmastic.co.uk for a quick quote. We cover Angus from our Crawley base, Letham included. Across Angus, we cover 40 places, Letham among them. Dundee is on our list too, about 13 miles from Letham.
Postcode districts we cover here for sand mastic: DD8. We cover properties on The Square, Kirkgait and Gardyne Street. Close by, we work in Craichie (2 miles south-west), Tulloes (2 miles south-west), Hillend (2 miles west), Lownie Moor (3 miles west) and Kingsmuir (3 miles west). Larger places within reach include Arbroath (8 miles south-east), Forfar (5 miles west), Carnoustie (9 miles south), Kirriemuir (9 miles west), Brechin (8 miles north-east) and Hunter's Town (9 miles south). Being one of Angus’s larger places, Letham has homes, rented property and businesses of every kind.
Near you in Letham
Nearby you will also find Whitehills Hospital (4.1 miles west) and Balgavies Castle (1.9 miles north). Green spaces nearby include Balgavies Loch.
What the job involves on each surface
Period and listed homes
Period homes look their best with traditional materials.
Sash and case windows
The box of a sash and case window sits in the stone or brick opening. Sand mastic seals the joint round it.
Should I try it myself first?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so tell us about it when you ask for a quote.
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.
How the visit works
There isn’t much for you to do on the day. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to a full day, depending on how many windows from start to finish. Somewhere like Letham may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First, we look at the surrounds with you and agree what needs doing.
- The loose and crumbling mastic is raked out and the joint cleaned.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
- Clear items away from the joints we’re working on
Get a quote
If you’re in Letham and need sand mastic, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
Advice
Looking after it afterwards
After the cure time, these simple habits help:
- Go gently near the mastic when preparing windows
- Get any rot dealt with first
- Renew mastic before redecorating the windows
- Look over the window mastic once a year
Leave the new mastic unpainted, which is the traditional advice. Ask us before any decorating around it.
An open joint round the box lets weather through. The longer it’s left, the more the joint opens.
What else we do in Letham
What affects the cost of sand mastic
You will get a clear quote before any work starts. It takes into account:
- The old material and how stubborn it is
- Which sealant suits the joint
- How many rooms, windows or areas are involved
- Working hours on commercial sites
Doing several joints on one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The address or postcode of the job
- Roughly how big the job is
- The problem you’ve noticed
- Photos by email, if that is easy
Getting a quote is simple: let us know what needs doing and where. A few photos by email make the job easier to understand.
Leave it or put it right?
Gaps round a sash window let in rain and draughts. Left, water can reach the timber and the wall, so dealing with it now protects both. Out of town in Scotland, exposed walls take a lot of weather, and damp in stone or harled walls takes a long time to dry once water gets behind a joint.
We don’t show prices on the website, because each job is priced on what it involves. For a quick quote, please email us at info@mrmastic.co.uk.
Why choose Mr Mastic in Letham
- Anti-fungal silicone where joints get wet
- Full insurance on every job
- 20+ years of sealant experience
- 180+ five-star Google reviews
Read our cost guide or our reviews.
When it isn’t the sealant
Some problems need a builder, plumber or other trade rather than us:
- Decayed frames that need repair
- Sash cords, weights and draught-proofing of the sashes
- Putty and glazing repairs
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly.
Surfaces we seal
- Stone surrounds
- Sash and case windows
- Period & listed homes
- Tenement windows
- Timber door frames
- Brick reveals
FAQs for Letham
Can you do sand mastic in Letham?
Yes, Letham is within the area we cover. Our work covers the whole of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear quote.
What guarantee comes with sand mastic in Letham?
All our work, in Letham and everywhere else, comes with a 12-month guarantee. We’re also fully insured and ARBOMaster approved.
Is it worth trying it myself?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs, while a short indoor joint may be within reach.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and finished to sit neatly against the masonry.
What does sand mastic cost?
Every job is different, so each one gets its own quote. For a quick quote, email us at info@mrmastic.co.uk and tell us what needs doing and where.
Are you fully insured?
Yes. Full insurance covers our work, and we can confirm the details when we quote.
Can tenants book the work?
Yes, but check with your landlord or agent first. Many landlords are glad to have it sorted.
Does someone need to be in?
It depends on the job. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.