Perth and Kinross · Scotland
External Mastic in Old Blair
External mastic for Old Blair, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Plants rooting in failed movement joints
- Brick movement joints where the sealant has split
- Gaps where render, brick and frames meet
External mastic for homes and businesses in Old Blair
Short cuts in external joints show up within a season or two. Overfilled joints, missing backing rod and sealant laid over old sealant rarely last long. We take the old material out and do it properly. If you are dealing with sealant that has lost its bond to the brick or render and joints pointed up with cement by mistake, we can put it right, on copings & trims, joints between brick and frames and façade panels alike.
Stone walls need a stone-friendly sealant, as acetoxy products can attack some stone. Newer houses need their movement joints and roofline trims kept sound.
All our work is covered by our one-year guarantee, wherever you are in Perth and Kinross.
- Place
- Old Blair (PH18)
- Region
- Perth and Kinross
- Guarantee
- A year, on every job
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Work for landlords, hotels and businesses
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements and we’ll quote.
The process
You don’t need to clear the whole room or building before we come, only the area right around the joints. Everything nearby is protected, and the job takes a few hours to a few days, depending on the length of joint and the access for a typical job. Outdoor work around Old Blair depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Indoor work goes ahead whatever the weather.
- We start by checking each joint, agreeing the ones to redo and how we’ll reach them.
- The old mastic and anything lodged in the joint is removed.
- The joint faces are cleaned and primed where the sealant needs it.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- A flexible exterior sealant is applied and tooled in a colour to suit the wall.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Mention any leaks or damp you’ve noticed
- Move anything stored near the joints
Ask for a quote
Want a quote for external mastic? Please email us at info@mrmastic.co.uk with a few details. We will explain what we’d do and send you a clear quote before we start.
Advice
Your questions about external mastic in Old Blair
Can you help a landlord with a rental near Blair Atholl station?
Yes. We work for landlords and agents as well as householders, and several properties can be quoted together. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Can you do external mastic in Old Blair?
Yes, Old Blair is within the area we cover. We work across all of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job, and we’ll send you a clear quote.
What does external mastic cost?
The cost depends on the size of the job, access and how much old sealant has to come out. Call for a quick quote and we will talk you through it.
Do you do commercial work?
Yes. We work in offices, washrooms, hotels and other commercial premises, as well as homes. Working times can be discussed when we quote.
Do you have insurance?
Yes, we are fully insured.
How do you reach high-level joints?
Each building is different. Send us photos and a rough idea of the height and we’ll confirm how they can be reached safely.
How often do external joints need resealing?
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.
How long does external mastic take?
A typical job takes anything from a few hours to several days, depending on the building. Your quote will say how long we expect yours to take.
Leave it or put it right?
A failed movement joint lets water into the wall. Dealing with it early keeps the repair to the joint, instead of the wall and finishes around it. In an older home around Old Blair, damp from a failed joint can get into timber and plaster.
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why choose Mr Mastic in Old Blair
- One-year guarantee on every job
- Anti-fungal sanitary silicone in wet areas
- Sealant colour chosen to suit
- Experience in homes, commercial sites and hotels
Places near Old Blair
More services for Old Blair
Quotes for external mastic in Old Blair
Every job gets its own quote. These are the things that affect it:
- How easy the joints are to reach
- How many areas need sealing
- The number and length of the joints
- The type of sealant required
A failed joint rarely gets cheaper to fix by waiting. If you’re not sure whether it needs doing, send an email to info@mrmastic.co.uk and we’ll give you an honest view and a quote.
What we need to know
Before you ask for a quote, have a think about:
- What the problem is, such as mould, gaps, leaks or cracking
- Where the property is
- A few pictures by email, if you can
- Access, such as stairs, a lift or height
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we’ll explain what’s involved and send you a clear quote.
What we’re called out for in Old Blair
Buildings move more than people expect. 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 normally contact us after spotting one of these:
- Rain getting behind render or cladding at a joint
- Leaking joints around cladding and façade panels
- Sealant that has lost its bond to the brick or render
- Failed seals between different materials
In and around Old Blair, as anywhere, good external mastic starts with a clean, dry, properly prepared joint.
Questions to ask before you book
- How much experience the applicator has
- Whether VAT is included
- Are they insured?
- How hidden problems are handled
Different surfaces, different methods
Copings and trims
Metal and stone copings both move with temperature, so a flexible sealant suits them best in all weathers.
Brickwork movement joints
People sometimes point up a brick movement joint by mistake. Where one has been mortared, we cut it out and reseal it with sealant if the joint can be cleared.
Aftercare tips
So the new joints stay in good condition:
- Tell anyone working on the walls about the movement joints
- Clear growth from the base of walls and joints
- Keep movement joints as flexible joints, not mortar
- Avoid pressure-washing directly into sealant joints
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage which cost more to put right than the joint.
Outside joints around Old Blair
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that. Harled (roughcast) walls are common in Scotland, and where harling meets frames, pipes and other materials, the joint needs a flexible sealant that grips a rough surface.
For landlords with property near Blair Atholl station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Old Blair is about 23 miles north-west of Blairgowrie and Rattray, in Perth and Kinross. Our applicators cover external mastic for homes and businesses in Old Blair and nearby, as part of our work across Perth and Kinross. Old Blair is one of 107 places in Perth and Kinross we cover for external mastic. For nearby work, see our Dundee page (39 miles or so).
Jobs for external mastic in PH18 is quoted and booked the same way as anywhere else. Other places close to Old Blair include Bridge of Tilt (1 mile east), Blair Atholl (1 mile east), Old Struan (4 miles west), Moulin (6 miles south-east) and Pitlochry (7 miles south-east). If you’re somewhere remote, the job takes a little more planning, so let us know when you get in touch.
Landmarks near Old Blair
The closest station to Old Blair is Blair Atholl station, roughly 0.5 miles south-east. Other landmarks nearby include Atholl Country Life Museum (0.5 miles south-east) and Blair Castle (less than half a mile north). Open spaces near Old Blair include Loch Moraig and Creag Odhar.