Highland · Scotland
Sand mastic for sash & case windows in Charlestown, Highland
Sand mastic across Charlestown and nearby, with old sealant always removed completely and a 12-month guarantee.
- Wind and rain getting in round a sash window
- Patchy fillers round a sash window
- Gaps where the frame meets the masonry
Looking after it afterwards
Joint life depends on how it’s used and looked after. We suggest:
- Go gently near the mastic when preparing windows
- Check the mastic when you check the paintwork
- Keep modern sealant off the mastic
- Keep sills and gutters clear so water drains away
Keep gutters and sills clear so water runs away from the surround. Constant wetting wears the mastic faster.
Sound mastic protects the frame. Failed mastic lets water reach the timber and timber that stays wet can rot.
Sand mastic in Charlestown, done properly
We work across Charlestown renewing sand mastic on sash windows and doors. Every joint is cleaned out and filled by hand for a neat, traditional finish. Common call-outs are for window mastic to renew ahead of painting and mastic dropping out of the joint, on brick reveals, tenement windows and period & listed homes.
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, so the mastic there works hard.
Each job carries a 12-month guarantee, large or small.
- Where
- Charlestown (IV1)
- Wider area
- Highland
- Guarantee
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Sand mastic in Charlestown: local notes
Charlestown is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on the mastic around older windows and doors, which can dry out and crack sooner where a building faces the weather. Charlestown is in the west of Scotland, which is wetter than the east, which means the mastic around older windows and doors has to cope with a lot of rain.
Rented homes near Inverness station change hands often, and older sash windows in a rental need their mastic kept sound to keep the weather out. Managing a site like Inverness High School? Then the mastic around its windows and doors needs looking after like any other building’s.
Charlestown is about 3 miles north-west of Inverness, in Highland. If you need sand mastic in Charlestown, please send an email to info@mrmastic.co.uk for a quick quote. We cover Highland from our Crawley base. Charlestown is one of 253 places in Highland we cover for sand mastic.
All of IV1 is covered for sand mastic, from the main roads to the quietest streets. If you need sand mastic at a property on Main Street, Oakleigh Road and Bellfield Road or a nearby road, our applicators can take on the job. If you are just outside Charlestown, we cover North Kessock (1 mile north-west), Merkinch (1 mile south), Longman (2 miles south-east), Leachkin (2 miles south) and Millburn (2 miles south-east). Within a short drive, we also cover Inverness (3 miles south-east), Nairn (15 miles east), Cradlehall (5 miles east), Dingwall (9 miles north-west), Hilton (3 miles south-east) and Alness (13 miles north). If you’re somewhere remote, the job takes a little more planning.
Local landmarks in Charlestown
Charlestown’s nearest station is Inverness station, about 2 miles south-east. Other landmarks nearby include Eastgate Shopping Centre (2.1 miles south-east) and Clan Maclennan Museum (1.3 miles north). Open spaces near Charlestown include Ord Hill.
What sealant work can’t fix
Before you book, it’s worth knowing the limits too:
- Rotten sashes, sills or window boxes (a joiner’s job)
- Crumbling stone or brickwork round the window
- Sash cords, weights and draught-proofing of the sashes
If you’re not sure, just drop us a line at info@mrmastic.co.uk and we will give you a straight answer.
Surfaces we seal
- Stone surrounds
- Timber door frames
- Tenement windows
- Sash and case windows
- Period & listed homes
- Brick reveals
Common questions in Charlestown
Can you help a landlord with a rental near Inverness station?
Yes, rental work is part of what we do. Just email us at info@mrmastic.co.uk and tell us about the property, and we will give you a clear quote.
Does living near the coast affect sand mastic in Charlestown?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Which is right for my windows, sand mastic or modern sealant?
For period timber windows in stone or brick, sand mastic is often the better fit. On modern frames, we’d normally use a flexible sealant, and we will explain why.
Can I paint the new mastic?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we will advise.
Can you work on commercial sites?
Yes, regularly. Larger jobs can be planned room by room or area by area to suit the site.
Will there be a smell?
Possibly a little. Any smell clears as the sealant cures, and ventilation helps.
What does sand mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
More services for Charlestown
Why act early in Charlestown
A silicone bead can be quicker, but on period stone or brick it often looks out of place. Sand mastic is the traditional material and finishes neatly against the masonry. In a place like Charlestown, small leaks are easy to put off, but water through a failed joint keeps working away until it’s fixed.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. The price is agreed before we begin.
Why book with us
- Domestic, commercial and hotel work
- Tidy, careful work
- More than 20 years in sealant work
- A 12-month guarantee on all work
Take a look at what affects the cost and our reviews.
Landlords, agents and businesses in Charlestown
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
In hotels, rooms out of use cost money, so we plan the work room by room. We have worked in hotels as well as homes and businesses.
Signs you need sand mastic in Charlestown
Rain on the window surround works into any crack and pushes it out. Exposed elevations usually fail first.
It’s worth asking for a quote if you see:
- Cement or filler used on old window joints that has cracked
- Failed mastic on an exposed elevation
- Gaps where the frame meets the masonry
- Silicone on a period window that looks wrong
Old Allangrange House, about 2.5 miles north-west, is one of the historic houses in the wider area around Charlestown.
Before you book anyone
- Who turns up on the day
- Whether they seal over old material or remove it
- What the quote includes, VAT included or not
- Which sealant they’ll use, and why
What affects the cost of sand mastic
Some jobs are bigger than they look, and some smaller. What affects the quote:
- The old material and how stubborn it is
- Which sealant suits the joint
- The size of the job
- Whether the work is at height
A few things move the cost up or down: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Helping us quote
Before you ask for a quote, have a think about:
- Photos by email, if that’s easy
- How we’d reach the joints
- The address or postcode of the job
- What’s wrong with the joints now
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work before giving you a price.
How the visit works
Good joint work is mostly preparation, so that’s where we spend the time. Every joint is cleaned and dried before new material goes in. All told, the work takes a few hours for a single window, longer for several. Around Charlestown, distance and access matter more than parking. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- We pack any deep voids first.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Move anything stored near the joints
- Let us know about parking restrictions
Getting a quote
Getting a quote is simple: let us know what needs doing and where. A few photos by email make the job easier to understand, and we’ll come back to you with a quote.