Highland · Scotland
Sand mastic for sash & case windows in Lewiston, Highland
Professional sand mastic in and around Lewiston, with old sealant always removed completely.
- Crumbling sand mastic round a window
- Wind and rain getting in round a sash window
- Open joints round the window box
What affects the cost of sand mastic
Every job gets its own quote. This is what makes a difference:
- The size of the job
- Which sealant suits the joint
- Whether the work is at height
- Any mould that needs treating
Doing several joints on one visit is generally more efficient than separate visits, so tell us about everything that needs sealing. You will get one clear quote for the whole job.
What to tell us for a quote
Photos help, but a description is a good start. Try to tell us:
- The problem you’ve noticed
- Photos by email, if that is easy
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
Need a quote? Please send an email to info@mrmastic.co.uk and tell us about the job. You will know what we plan to do, and what it will cost, before any work begins.
Sand mastic in Lewiston, done properly
We renew sand mastic around sash windows and doors in stone and brick. The old mastic is raked out, and new mastic is applied and shaped by hand. We work on sash and case windows, tenement windows and stone surrounds, and people most often call us about gaps where the frame meets the masonry and wind and rain getting in round a sash window.
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.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- Lewiston (IV63)
- Region
- Highland
- Guarantee
- One year on every job
- Quotes
- A clear price before we start
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Landlords, agents and businesses in Lewiston
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
Housing providers, facilities teams and property managers book us too. We can quote a run of properties together, and we are fully insured for the work.
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it fails, we can still redo it.
Also near Lewiston
Other services in Lewiston
Why it’s worth doing now in Lewiston
Before painting the windows, it pays to renew the mastic. Painting over failed mastic does not seal it, and the new mastic is traditionally left unpainted. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water through a failed joint keeps working away until it’s fixed.
There are no prices on our website, because the cost depends so much on the job itself. For a quick quote, please send an email to info@mrmastic.co.uk.
Why book with us
- More than 20 years in sealant work
- Anti-fungal silicone where joints get wet
- We never seal over old sealant
- ARBOMaster approved applicator
See our cost guide or customer reviews.
What we do, step by step
Before we leave, we go over the finished joints with you and tell you how long to leave it. The visit itself normally takes a few hours for a single window, longer for several, depending on the amount of work. Around Lewiston, distance and access matter more than parking. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- We check each window surround and the condition of the joint.
- 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.
Preparing for the visit
- Mention if the joints have been sealed before
- Let us know about parking restrictions
- Mention any tricky access
Getting a quote
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few photos by email make the job easier to understand, and we will come back to you with a quote.
Advice
Your questions about sand mastic in Lewiston
Is Lewiston in your area for sand mastic?
Yes, Lewiston is within the area we cover. We work across all of Scotland. You can email us at info@mrmastic.co.uk and tell us what needs doing.
Will you come out to Lewiston?
Yes. Lewiston is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply send an email to info@mrmastic.co.uk.
I’m a tenant. Can you help?
Yes. Check with your landlord; we can send the quote to them too.
Is it messy?
Tidy work is part of the job. Nearby surfaces are protected, and we clear up when we are done.
Which is right for my windows, sand mastic or modern sealant?
We will help you decide. Period homes often look best with sand mastic, and modern sealants suit newer frames.
Which products do you use?
Products from Arbo and Everbuild, among others, picked for each joint. We will tell you what we are using and why.
Do you hold any approvals?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
What sealant work cannot fix
We won’t take on work that won’t last, so these are the limits:
- Decisions on consent for listed homes
- Damaged stone surrounds
- Sash cords, weights and draught-proofing of the sashes
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before you book.
Surfaces we seal
- Brick reveals
- Stone surrounds
- Tenement windows
- Period & listed homes
- Sash and case windows
- Timber door frames
What sand mastic looks like in Lewiston
The west of Scotland is wetter than the east, which means the mastic around older windows and doors has to cope with a lot of rain. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Homes close to Kilmore Parish Church of Scotland include some older properties, and the joint between an old wall and a newer frame is usually the first place rain gets in. Schools such as Glen Urquhart High School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Lewiston is about 13 miles south-west of Inverness, in Highland. We carry out sand mastic for homes and businesses in Lewiston and nearby, as part of our work across Highland. Lewiston is one of 253 places in Highland we cover.
Work in IV63 works the same way as everywhere else we cover. You’ll find streets such as Dal of Borlum, Carn Glas and Carriers Croft, all of which we cover. Neighbouring places we cover for sand mastic include Drumnadrochit (1 mile north), Torness (4 miles east), Gorthleck (6 miles south), Dores (7 miles north-east) and Kiltarlity (8 miles north). Larger places within reach include Inverness (13 miles north-east), Merkinch (14 miles north-east), Hilton (13 miles north-east), Crown (14 miles north-east), Millburn (14 miles north-east) and Muir of Ord (13 miles north). Remote and island addresses need a little more planning, so tell us where you are when you ask for a quote.
Near you in Lewiston
In Lewiston, that means homes and buildings near Drumnadrochit Hotel, among other places. Other landmarks nearby include Urquhart Castle (1.3 miles east) and Urquhart Castle Visitor Centre (1.2 miles east). For a walk, there’s Loch Ness.
Different surfaces, different methods
Brick reveals
Brick reveals round timber windows are often pointed with sand mastic. It gives a traditional finish.
Period and listed homes
Materials matter on listed and conservation-area homes. Sand mastic is often the preferred finish.