Highland · Scotland
Strathy External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for Strathy, backed by a one-year guarantee. Call for a quick quote.
- Failed seals between different materials
- Leaking joints around cladding and façade panels
- Brick movement joints where the sealant has split
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Walk round the building once a year and look at the joints
- Tell anyone working on the walls about the movement joints
- Fix overflowing gutters above sealed joints
- Get split or bare joints resealed while the damage is small
If you have more work done on the wall, such as new render, cladding or an opening, show the contractor the movement joints. They should be kept open and resealed, not filled.
Leaks behind façade panels and render often go unseen. By the time there’s a damp patch, the damage can be well established, so it’s worth resealing at the first signs.
External mastic in Strathy, done properly
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what access is needed. We’re often asked to deal with failed sealant between panels on a façade and failed seals between different materials, on façade panels, joints between brick and frames and copings & trims.
Across smaller places in Scotland, stone and harled cottages, farm buildings and newer houses often stand exposed to wind and rain. Outside joints on exposed walls work hard, so they need a sealant that moves with the building.
All of our work is guaranteed for twelve months, in Strathy and everywhere else we cover.
- Location
- Strathy (KW14)
- Wider area
- Highland
- Guarantee
- 12 months on all our work
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
The process
Most of a good job is in the preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. All told, the work takes anything from a few hours to several days, depending on the building. Outdoor work around Strathy depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Work indoors is not affected.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Before we arrive
- Mention any parking rules near the property
- Tell us about access, such as stairs, a lift or high-level joints
- Plan for the work area to be out of bounds to pets and children
Getting a quote
Want a quote for external mastic? Please drop us a line at info@mrmastic.co.uk with a few details. You will know what we plan to do, and what it will cost, before any work begins.
Related advice
Strathy: your questions answered
Will you come out to Strathy?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Is Strathy in your area for external mastic?
Yes, Strathy is within the area we cover. Our work covers the whole of Scotland. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we’ll send you a clear quote.
Can you quote for more than one area?
Yes. Just list everything you need and we will quote it together.
Do you remove the old sealant?
Yes. We cut out all the old sealant and clean the joint.
How long will you be here?
A typical job takes a few hours to a few days, depending on the length of joint and the access, including preparation and clearing up. We will confirm how long when we quote.
Should I point up the gap in my brickwork?
No. Rigid materials cannot move with the wall. If it has already been filled, we can usually cut it out and reseal it.
Do you work for landlords and businesses?
Yes, often. We can quote for several properties at once, and between tenancies is a good time for the work.
When will the joints need doing again?
It varies with how exposed the wall is and how much the joint moves. Signs to watch for are cracking, hardening and gaps at the edges, and reseal at that point.
Landlords, agents and businesses in Strathy
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. Several properties can go on one quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Outside joints around Strathy
Strathy is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on movement joints and outside wall joints, especially on the side facing the sea. Strathy is in the west of Scotland, which is wetter than the east, so there’s plenty of rain for movement joints and outside wall joints to keep out.
For jobs in and around Strathy, choosing the right material for each joint is as important as a tidy finish.
Strathy is about 17 miles west of Thurso, in Highland. If you need external mastic in Strathy, please email us at info@mrmastic.co.uk for a quick quote. We cover Highland from our Crawley base, Strathy included. Our area takes in 253 places across Highland, from the larger towns to small villages.
Here we cover the KW14 postcode area for external mastic. We also cover Portskerra (3 miles east), Melvich (3 miles east), Reay (8 miles east), Am Blàran Odhar (8 miles west) and Forss (13 miles east). For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Landmarks near Strathy
The countryside around Strathy includes Lochan Ealach.
What affects the quote in Strathy
Some jobs are bigger than they look, and some smaller. What affects the quote:
- Working hours on commercial sites
- Whether there’s mould to deal with
- The size of the job
- The number of rooms or windows
Rather than a set price list, 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.
Helping us quote
There’s no need for technical detail. Just tell us:
- Any access issues, like height or stairs
- The type of property
- The address or postcode of the job
- Any previous sealing or DIY work
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints, and email pictures if that’s easy.
When to call us in Strathy
Every building moves. Clay bricks expand slightly over their life, concrete and block shrink, and everything moves with temperature and wet. All of that ends up in the joint sealant.
People usually contact us after spotting something like this:
- Joints pointed up with cement by mistake
- Sealant pulling away from one side of the joint
- Water getting into walls through failed joints
- Plants rooting in failed movement joints
In and around Strathy, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Before booking anyone
- What happens if the job turns out different
- The length of the guarantee
- How long to leave it before use
- What product goes in the joint
Different surfaces, different methods
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant so the movement is taken up.
Copings and trims
Coping and trim joints face rain and sun head on. We reseal them with an exterior sealant suited to the material.
What happens if it’s left?
Pointing a movement joint with mortar might seem a neat fix, but it stops the joint moving. The wall then cracks somewhere else. The correct repair is a flexible sealant with the right backing. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water behind a failed seal does the most damage when nobody’s watching.
A failed joint rarely gets cheaper to fix by waiting. If you’re unsure, send an email to info@mrmastic.co.uk for an honest opinion and a quote.
Why Strathy customers choose us
- 180+ five-star Google reviews
- Trusted Arbo and Everbuild sealants
- You choose the colour before work begins
- Colour picked to suit the job
See how sealant jobs are priced and our reviews.