Highland · Scotland
Navidale Sand Mastic
Traditional burnt sand mastic around sash and case windows and doors in stone and brick in Navidale, with a 12-month guarantee on every job. Ask us for a quote.
- Window mastic to renew ahead of painting
- Draughty sash windows at the surround
- Mastic round period door frames that has failed
DIY sealant or a professional job?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly, so just mention it when you contact us.
The biggest DIY mistake is sealing over old sealant. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. All the old material has to come out first.
Sand mastic in Navidale
If your home is listed or in a conservation area, check with your local planning authority whether consent is needed for work to windows. Sand mastic is often favoured as a like-for-like material. We work on tenement windows, brick reveals and period & listed homes, and people most often call us about cracked mastic round a front door frame and mastic dropping out of the joint.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
Each job carries a 12-month guarantee, whatever its size.
- Place
- Navidale (KW8)
- Wider area
- Highland
- Cover
- A year, on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Different surfaces, different methods
Period and listed homes
On a listed home or in a conservation area, the right material matters. Sand mastic is often the preferred finish.
Brick reveals
Loose mastic comes out and deep gaps are packed before pointing.
When something else is needed
It helps to know what we cannot do too:
- Broken panes
- Timber that has rotted
- Sashes that need overhauling
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly before you book.
Where we work in Navidale
- Timber door frames
- Sash and case windows
- Stone surrounds
- Tenement windows
- Period & listed homes
- Brick reveals
How the visit works
Good joint work is mostly preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes anything from a few hours to a full day, depending on how many windows. For a place like Navidale, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- We check each window surround and the condition of the joint.
- We rake out the old mastic and clean the joint.
- Large voids are packed out.
- We point the joint with sand mastic by hand.
- We finish the mastic to a tidy line.
Before we arrive
- Tell us about any water getting in
- Try not to wet indoor joints just before the visit
- Let us know about parking restrictions
Get a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we will talk you through the work.
Advice
Why deal with it now?
An open joint round the frame lets weather in. Water can get to the frame and the masonry, so dealing with it now protects both. 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.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, plus any working-time requirements on site. Ask us for a quote and we’ll explain what it covers.
What you get with us
- Homes, businesses and hotels
- Anti-fungal sanitary silicone in wet areas
- Quality sealants from Arbo and Everbuild
- Tidy, careful work
Read our cost guide and our reviews.
Looking after it afterwards
Aftercare is simple:
- Clear gutters so water does not pour onto the windows
- Don’t run silicone over sand mastic
- Ask a joiner to look at soft timber first
- Check the mastic when you check the paintwork
Avoid painting over the new mastic, as traditional guidance advises. 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.
FAQs for Navidale
Can you help a landlord with a rental near Helmsdale station?
Yes, landlords and agents are among the people we work for. Just send an email to info@mrmastic.co.uk with the address and what needs doing, and we’ll send you a clear quote.
Does living near the coast affect sand mastic in Navidale?
Near the coast, wind-driven rain and, nearer the shore, salt air make outside sealant work harder. The right product, a clean joint and the right depth all help it cope.
How much does sand mastic cost in Navidale?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote and we will talk you through it.
Are you insured?
Yes, we are fully insured.
Do you do commercial work?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Will it make a mess?
No. The area is protected while we work and cleaned up afterwards.
Which products do you use?
Products from Arbo and Everbuild, among others, chosen to suit the joint. We explain the product when we quote.
Can sand mastic be painted?
Traditional guidance is not to paint over sand mastic. Ask us before you decorate around it and we’ll advise.
Places near Navidale
What else we do in Navidale
What affects the quote in Navidale
Some jobs are bigger than they look, and some smaller. The main factors:
- How easy the joints are to reach
- How many rooms, windows or areas are involved
- Mould in or behind the old joints
- Whether old sealant or filler has to be cut out
The cost depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts.
What to tell us for a quote
To make quoting easier, let us know:
- Access, such as stairs, a lift or height
- How many joints, rooms or windows are involved
- The problem you’ve noticed
- Any previous sealing or DIY work
Asking for a quote is easy: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will take it from there.
Navidale homes and the weather
Navidale is within about 1 mile of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
Letting a property close to Helmsdale station? Then cracked sand mastic around sash windows lets in the draughts tenants complain about. Around Navidale, as everywhere, sand mastic is only as good as the preparation behind it.
Navidale is about 33 miles south of Thurso, in Highland. Jobs in Navidale get the same care as everywhere else we work: old sealant removed completely, careful preparation and a 12-month guarantee. Our area takes in 253 places across Highland.
Jobs for sand mastic in KW8 works the same way as everywhere else we cover. If you are just outside Navidale, we cover East Helmsdale (1 mile south-west), Berriedale (6 miles north-east), Dalchalm (10 miles south-west), Clynelish (11 miles south-west) and Balnabruich (11 miles north-east). For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Around Navidale
The nearest railway station is Helmsdale station, about 1 mile south-west of the centre. Well-known places in the area include Timespan (0.8 miles south-west). For a walk, there’s Ord of Caithness.