Highland · Scotland
Scrabster External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homes and businesses in Scrabster and across Highland. Fully insured, ARBOMaster approved and guaranteed for a year.
- Damp patches traced to an open external joint
- Cracked joints where brick meets render or frames
- Weathered mastic that no longer stretches
What external mastic looks like in Scrabster
Scrabster is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that.
If you look after a building such as Thurso High School, larger buildings have long runs of movement joint that eventually need resealing.
Scrabster is about 2 miles north-west of Thurso, in Highland. If you need external mastic in Scrabster, it’s easy to get a quote: please email us at info@mrmastic.co.uk. We’re based in Crawley and cover Highland. Our Highland coverage runs to 253 places, and Scrabster is one of them.
Here we cover the KW14 postcode area for external mastic. Local streets include Clett Terrace, St Clair Avenue and Holborn Place, and we cover them all. Neighbouring places we cover for external mastic include Thurso (2 miles south-east), Glengolly (3 miles south), Janetstown (3 miles south), Forss (3 miles west) and Murkle (4 miles east). For island and remote addresses, a little more planning is needed, so mention it when you ask for a quote.
Around Scrabster
The closest station to Scrabster is Thurso station, roughly 1.7 miles south-east. Nearby you’ll also find Dunbar Hospital (1.9 miles south) and Scrabster Castle (0.9 miles south-east).
External mastic for homes and businesses in Scrabster
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant. We work on concrete & block, façade panels and brickwork movement joints, and common reasons people get in touch are movement joints with cracked, split or missing sealant and joints pointed up with cement by mistake.
In and around a place like Scrabster, many buildings face open ground and take the full weather. Outside joints on exposed walls work hard, so they need a sealant that moves with the building.
Each job carries a 12-month guarantee.
- Where
- Scrabster (KW14)
- Region
- Highland
- Guarantee
- One year on every job
- Price
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
FAQs for Scrabster
Can you help a landlord with a rental near Thurso station?
Yes, rental work is part of what we do. Just send an email to info@mrmastic.co.uk and tell us about the property, and we will send you a clear quote.
Will you come out to Scrabster?
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.
How long before the joint can be used?
Different products cure at different speeds, so please follow the time we give you.
Is it OK to seal over old sealant?
No, it won’t last. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
How long does external mastic last?
That depends on the wall, the weather and the movement. Signs to watch for are cracking, hardening and gaps at the edges and have them redone then.
Is there a guarantee?
Yes, for a year. If anything is not right with the work within the year, let us know and we will sort it.
Will you leave a mess?
No. We protect the surfaces around the joints, and we tidy up before we go.
Can a movement joint be filled with mortar?
No. A mortar-filled joint cannot move, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
What the job involves on each surface
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap.
Landlords, agents and businesses in Scrabster
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
We regularly work with letting and managing agents. Send the address, what’s needed and the access arrangements and we will give you a quote.
Can I do it myself?
If you do try it yourself, take your time over the 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.
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.
Signs you need external mastic in Scrabster
Poor preparation causes many early failures: dusty or wet faces, no primer where one was needed, or old sealant left in. The sealant never bonds properly.
Common reasons people contact us include:
- Water getting into walls through failed joints
- Joints with sealant missing in places
- Gaps where render, brick and frames meet
- Plants rooting in failed movement joints
Rented homes near Thurso station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Before booking anyone
- Whether all the old sealant comes out first
- Who turns up on the day
- What insurance they hold
- How the colour is chosen
Other services in Scrabster
What affects the cost of external mastic
Jobs vary more than people expect. What affects the quote:
- The type of sealant required
- Whether old sealant or filler has to be cut out
- Any mould that needs treating
- Working hours on commercial sites
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, plus any working-time requirements on site. Call for a quick quote and we’ll go through it with you.
What we need to know
To help us quote quickly, please include:
- How we’d reach the joints
- Where the property is
- What’s wrong with the joints now
- Whether it has been sealed before
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is. When it suits you, email us at info@mrmastic.co.uk.
How it works
On the day, we look over the joints with you first, so there are no surprises. Surfaces next to the work are protected before any work starts. Most jobs take a few hours for a handful of joints, longer for a whole elevation. For a place like Scrabster, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- Each joint is checked and the colour of the new sealant agreed.
- We take out the old sealant until the faces are sound.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- We gun in low-modulus sealant and tool it neatly.
How to prepare
- Keep pets and children clear of the area while we work
- Mention any tricky access
- Tell us about any water getting in
How to get a quote
If you’re in Scrabster and need external mastic, send an email to info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you will get a clear quote before any work starts.
Advice
What we cannot put right
Before you book, it’s worth knowing the limits too:
- Movement that is more than a sealant joint can take
- Rising or penetrating damp from elsewhere in the wall
- Cracked brickwork or render that needs a builder or plasterer
Not sure which it is? You can drop us a line at info@mrmastic.co.uk and we’ll tell you honestly.
Where we work in Scrabster
- Render & cladding joints
- Brickwork movement joints
- Concrete & block
- Façade panels
- Copings & trims
- Joints between brick and frames