Perth and Kinross · Scotland
External & façade joints in Perth, Perth and Kinross
Sealing brickwork movement joints, render, cladding and façade joints for Perth, backed by a 12-month guarantee. Call for a quick quote.
- Moss and dirt in joints with no sealant left
- Weathered mastic that no longer stretches
- Sealant pulling away from one side of the joint
How the job changes by surface
Concrete and blockwork
Wide joints in concrete need the depth controlling carefully. Backing rod sized to the joint sets it and keep the sealant to the right depth.
Brickwork movement joints
Brick movement joints are often mistaken for a missing mortar line. Where one has been mortared, we cut it out and reseal it with sealant if the joint can be cleared.
External mastic in Perth
Low-level joints can normally be done from the ground. Where joints are higher up, tell us about the building when you get in touch and we will confirm what access is needed. Typical jobs include damp patches traced to an open external joint and joints where the bead has come unstuck, across façade panels, copings & trims and concrete & block.
In a town like Perth, older stone-built streets sit alongside newer estates with brick, render and uPVC rooflines. Each has its own weak points: worn joints in old gutters, and dried-out movement joints in newer walls.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Perth (PH1, PH2)
- Region
- Perth and Kinross
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What we do, step by step
There is not much for you to do on the day. Show us the job and we will take it from there. The job generally takes a few hours to a few days, depending on the length of joint and the access. In a Scottish town like Perth, parking is generally straightforward, though older centres can be tighter. For flats, mention the shared stair or door entry system.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- The old mastic and anything lodged in the joint is removed.
- We clean both faces of the joint and prime them where the product calls for it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Mention any parking rules near the property
- Mention if the joints have been sealed before
How to get a quote
Getting a quote is simple: tell us what needs doing and where. A few photos by email make the job easier to understand.
Advice
Keeping the joints in good condition
Joint life depends on how it’s used and looked after. We suggest:
- Avoid pressure-washing directly into sealant joints
- Get split or bare joints resealed while the damage is small
- Point out the joints to other trades
- Ask before painting over external sealant
Only paint over the joint if we have confirmed the sealant can take paint. Paint can crack on a flexible joint.
Water getting behind cladding or render can go unnoticed for a long time. When it finally shows inside, the joint may have been open for years so early resealing is worth it.
What we’re called out for in Perth
If plants are growing out of a joint, the sealant has generally failed or was never there. Dirt and roots then trap moisture in the joint and make things worse.
If you can see any of these, it’s time to have the joints looked at:
- Damp patches traced to an open external joint
- Panel joints letting water in
- Sealant that has lost its bond to the brick or render
- Gaps where render, brick and frames meet
Rented homes near Perth station change hands often, and outside joints that have cracked can let damp into a rental, so check them between lets.
Comparing quotes
- How long the guarantee is
- Which sealant they’ll use, and why
- How the surfaces are prepared before sealing
- How hidden problems are handled
What affects the quote in Perth
You’ll get a clear quote before any work starts. It takes into account:
- The type of sealant required
- Access and height
- The number of rooms or windows
- Any working-time requirements on site
Combining jobs into one visit generally makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. You’ll get one clear quote for the whole job.
Helping us quote
Photos by email are helpful but not essential. Please mention:
- Pictures of the joints, sent by email
- Where the property is
- Any access issues, like height or stairs
- If it’s domestic, commercial or a hotel
Every job is quoted individually. Simply drop us a line at info@mrmastic.co.uk and describe the job.
Why deal with it now?
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The movement then cracks the brickwork or render nearby. The correct repair is a flexible sealant with the right backing. For landlords in Perth, damp and leaks can fall under the Repairing Standard. Replacing failed sealant early is simpler than dealing with a complaint.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part.
Why Perth clients choose us
- White, clear, grey or coloured to suit, where the product allows
- Neat joints and a tidy finish
- You choose the colour before work begins
- An ARBOMaster approved applicator
Read what affects the cost or customer reviews.
Landlord and commercial work in Perth
Housing providers, facilities teams and property managers book us too in Perth and across Perth and Kinross. We can quote a run of properties together.
Hotels need rooms back in use, so the work can be planned room by room. We’ve worked in hotels as well as homes and businesses.
Questions from Perth
Is there a guarantee on external mastic in Perth?
Every job comes with our one-year guarantee, wherever it is. We’re fully insured, and an ARBOMaster approved applicator.
Do you work for landlords with property near Perth station?
Yes, we work for letting agents and landlords. You can send an email to info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before work begins.
When is the sealant fully cured?
It depends on the product. Before we leave, we will tell you the cure time.
Can a movement joint be filled with mortar?
No. Mortar locks the joint solid, so the movement cracks the wall elsewhere. It needs a flexible sealant over backing rod.
Do you seal joints where cladding meets other materials?
Yes. Where different materials meet is one of the most common joints we seal. We use a flexible sealant suited to both surfaces, primed where needed.
Why is there a gap in my brick wall?
It’s a deliberate gap that lets the wall expand and contract without cracking. It should be filled with flexible sealant, never mortar.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises. Working times can be discussed when we quote.
How long does external mastic take?
That depends on the amount of work, but most jobs take a few hours for a handful of joints, longer for a whole elevation. We will tell you when we quote.
Nearby places to Perth
More services for Perth
External mastic in Perth: local notes
Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that.
Schools such as Perth High School are buildings too, and movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Perth is about 33 miles north of Edinburgh, in Perth and Kinross. If you need external mastic in Perth, it’s easy to get a quote: please drop us a line at info@mrmastic.co.uk. We cover Perth and Kinross from our Crawley base. Across Perth and Kinross, we cover 107 places, and Perth is one of them. For nearby work, see our Dundee page, about 19 miles away.
Postcode districts we cover here for external mastic: PH1 and PH2. That includes homes and businesses on Simpson Square, High Street and Moredun Square. Perth is on the A9 and A85, so it’s easy for us to get to. Other places close to Perth include Oakbank (1 mile south-west), Scoonieburn (2 miles south-east), Tarsappie (2 miles south-east), Milltown of Aberdalgie (3 miles south-west) and Forgandenny (4 miles south). Within a short drive, we also cover Blairgowrie and Rattray (14 miles north), Crieff (15 miles west), Auchterarder (12 miles south-west), Kinross (13 miles south), Coupar Angus (12 miles north-east) and Rattray (14 miles north). Being one of Perth and Kinross’s larger places, Perth has every kind of property, from flats to offices.
Near you in Perth
Locally, jobs take us to homes and businesses close to North Inch, Public House and St John's Academy. Perth’s nearest station is Perth station, roughly 0.7 miles south-east. Well-known places in the area include Murray Royal Hospital (1.2 miles east) and Balhousie Castle (0.6 miles north-east). Green spaces nearby include St Magdalene's Hill.