Highland · Scotland
Sand Mastic in Carndu
Sand mastic in Carndu from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps between timber frames and stone or brick
- Wind and rain getting in round a sash window
- Gaps round a timber door in stone or brick
Sand mastic in Carndu
On many period windows, sand mastic looks right and suits the building. Newer frames normally get a flexible sealant instead, and we will talk through which suits your home. Typical jobs include mastic worn away on windows facing the weather and modern sealant on a period surround, across tenement windows, brick reveals and stone surrounds.
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.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we will put it right.
- Location
- Carndu (IV40)
- Wider area
- Highland
- Guarantee
- 12 months on all our work
- Price
- A clear price before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
What sand mastic looks like in Carndu
Carndu is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around older windows and doors, especially on the side facing the sea. Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic.
If you let a flat or house near Stromeferry station, any sash windows need sound mastic to keep draughts and rain out.
Carndu is in Highland. For sand mastic in and around Carndu, please send an email to info@mrmastic.co.uk for a quick quote. We cover Highland from our Crawley base. Carndu is one of 253 towns and villages in Highland where we work.
Postcode districts we cover here for sand mastic: IV40. Streets in the area include Helen Street, Princes Street and William Street, all of which we cover. We also cover the places around Carndu: Bundalloch (1 mile north-east), Dornie (1 mile south-west), Auchtertyre (3 miles west), Inverinate (5 miles south-east) and Reraig (5 miles west). For island and remote addresses, the job takes a little more planning.
Around Carndu
The closest station to Carndu is Stromeferry station, roughly 4.8 miles north-west. A little further out are Eilean Donan Castle (1.1 miles south-west). Green spaces nearby include Loch Anna.
How the visit works
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The work itself takes anything from a few hours to a full day, depending on how many windows. For a place like Carndu, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- We look at the surrounds with you and agree the joints to renew.
- We remove the old, loose mastic.
- Deep gaps are packed so the mastic sits at the right depth.
- The sand mastic is mixed and pressed into the joint by hand.
- The surface is finished to suit the stone or brick.
How to prepare
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
- For indoor joints, keep the area dry beforehand if you can
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we’ll talk you through what we’d do. Whenever you’re ready, send an email to info@mrmastic.co.uk.
Related advice
What the job involves on each surface
Stone surrounds
Sand mastic sits naturally against stone. It finishes to look like part of the surround.
Brick reveals
An open joint at a brick reveal lets weather in. New mastic seals the gap.
What affects the quote in Carndu
Your quote is based on your job. We look at:
- The number and length of the joints
- Access and height
- Whether there’s mould to deal with
- The product the joint needs
We do not show prices on the website, because each job is priced on what it involves. For a quick quote, please send an email to info@mrmastic.co.uk.
Asking for a quote
Photos help, but a description is a good start. Please mention:
- What’s wrong with the joints now
- Whether it’s a home or a business
- Whether it has been sealed before
- Roughly how big the job is
Asking for a quote is easy: let us know the job and the location and its rough size. A few pictures by email make the job easier to understand.
Can I do it myself?
A DIY attempt does not rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
If you are set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
What we can’t put right
Sealant isn’t the answer to every problem, and we’ll tell you before we start. It won’t solve:
- Planning or listed building consent (your local planning authority decides)
- Rotten sashes, sills or window boxes (a joiner’s job)
- Sashes that need overhauling
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we will tell you honestly before booking.
Joints and surfaces we work on
- Brick reveals
- Sash and case windows
- Stone surrounds
- Tenement windows
- Period & listed homes
- Timber door frames
Work for landlords, hotels and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
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.
Towns and villages near Carndu
What else we do in Carndu
Carndu questions
Can you help a landlord with a rental near Stromeferry station?
Yes, we work for landlords and agents. You can email us at info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before work begins.
Does living near the coast affect sand mastic in Carndu?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Is consent needed for window work on a listed home?
Checking first is sensible. Ask your local planning authority whether consent is needed for work on a listed home or in a conservation area.
Should I use sand mastic or silicone?
Sand mastic usually suits period timber windows best. Modern frames normally suit a flexible sealant, and we’ll explain why.
Do I need to be at home?
If the work is inside, we need someone to let us in. Once we’ve agreed the job, you don’t need to watch us work.
Do the sealants smell?
Sometimes, a little. Any smell clears as the sealant cures.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new sealant bonds properly.
Are you an approved applicator?
Yes. We’re an ARBOMaster approved applicator, which is run for the Arbo sealant brand.
Signs you need sand mastic in Carndu
Water gets into small cracks in the mastic and pushes it out. Windows facing the weather tend to go first.
The problems people normally mention when they call are:
- Old cement repairs round a window that have failed
- Weathered mastic on the most exposed windows
- Old sand mastic that has cracked, crumbled or fallen out
- Wind and rain getting in round a sash window
In the older streets around St Duthuc's Roman Catholic Chapel, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
Questions to ask before you book
- Whether they’re fully insured
- When the joint can take water or movement
- Whether VAT is included
- How the surfaces are prepared before sealing