Edinburgh · Scotland
Mortonhall External Mastic
External mastic in Mortonhall from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Movement joints filled with mortar instead of sealant
- Plants rooting in failed movement joints
- Leaking joints around cladding and façade panels
External mastic for homes and businesses in Mortonhall
Many failed façade joints only get noticed once there’s a stain or a damp patch inside. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a colour to suit. Typical jobs include panel joints letting water in and movement joints filled with mortar instead of sealant, across brickwork movement joints, façade panels and render & cladding joints.
External sealant needs dry surfaces, so outdoor work around Mortonhall is planned around the weather. Tell us how to reach each wall, gutter and roofline.
The work is guaranteed for twelve months. If there’s a problem with our work within the year, let us know and we’ll sort it.
- Location
- Mortonhall (EH16, EH10, EH17)
- Region
- Edinburgh
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Why act early in Mortonhall
Low-modulus sealants stretch easily, so they put less strain on the joint edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
Some things make a job bigger or smaller: how much old sealant there is and how stubborn it is, whether mould needs treating, and whether the work is at height. We take all of that into account in your quote.
Why Mortonhall clients choose us
- Homes, businesses and hotels
- Neat joints and a tidy finish
- Colour agreed with you before any work starts
- Trusted Arbo and Everbuild sealants
Read what affects the cost and our reviews.
Common questions in Mortonhall
Can you do external mastic in Mortonhall?
Yes, Mortonhall 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.
Will you come out to Mortonhall?
Yes. Mortonhall is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Where do you work from?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Do you guarantee your work?
Yes. All our work carries a one-year guarantee.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference.
Can a movement joint be filled with mortar?
No, not where the gap is a movement joint. Pointing it stops it working, and the wall may crack nearby. A flexible sealant is the right fill.
What’s an expansion joint in brickwork?
It’s a deliberate gap that lets the wall expand and contract without cracking. It’s sealed with a flexible sealant, not mortar.
How much does external mastic cost in Mortonhall?
We do not publish prices, because the cost depends on the job: how much there is, what’s there now, how we reach it and what it needs. You’ll get a clear quote before work begins.
How the visit works
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to several days, depending on the building. In smaller Scottish places, parking is normally less of an issue than access and distance. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- We fit closed-cell backing rod to control the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any water getting in
- Mention if the joints have been sealed before
Get a quote
Call for a quick quote, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work.
Advice
DIY versus a professional finish
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Different surfaces, different methods
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. We reseal them with a low-modulus sealant over backing rod.
Joints between dissimilar materials
Wherever two materials meet, they move differently. We seal the joint with a flexible exterior sealant.
Mortonhall buildings and the weather
The Old and New Towns of Edinburgh are a UNESCO World Heritage Site, and the Georgian New Town is known for its sash windows. For listed homes and conservation areas, check with the council before changing how windows or walls look. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
Managing a site like Gracemount High School? Then larger buildings have long runs of movement joint that eventually need resealing. For landlords with property near Slateford station, outside joints that have cracked can let damp into a rental, so check them between lets. If you live in an older home near Fairmilehead Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Mortonhall is about 1 mile west of Southhouse, in Edinburgh. Across the EH16 area, our applicators can take on external mastic. Our Edinburgh coverage runs to 175 places, and Mortonhall is one of them.
Here we cover the EH16, EH10 and EH17 postcode area for external mastic. Streets in the area include Frogston Road East, Mortonhall Park Avenue and Backlee, all of which we cover. Nearby, we also carry out external mastic in Alnwickhill (1 mile east), Howden Hall (1 mile east), Kaimes (1 mile east), Gracemount (1 mile east) and Southhouse (1 mile east). Within a short drive, we also cover Edinburgh (3 miles north), Leith (5 miles north), Bonnington (5 miles north), Greenside (4 miles north), Broughton (4 miles north) and Bellevue (4 miles north).
Around Mortonhall
In Mortonhall, that means homes and buildings near Liberton Parish Church and Inch Park and the streets around them. The closest station to Mortonhall is Slateford station, roughly 2.9 miles north-west. Other landmarks nearby include Cockburn Geological Museum (1.4 miles north) and Cameron Toll Shopping Centre (1.7 miles north). For a walk, there’s The New Leaf Co-op and Blackford Hill.
Nearby places to Mortonhall
Other services in Mortonhall
For landlords and businesses
Letting agents and landlords in Mortonhall can book us as well as homeowners. Resealing between tenancies keeps a property looking cared for.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a one-year guarantee.
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Fix overflowing gutters above sealed joints
- Check the sealant is paintable before painting near it
- Have failed joints looked at early
- Point out the joints to other trades
Make sure anyone working on the wall later knows where the movement joints are. They must stay as flexible joints, never rendered or pointed over.
An open movement joint lets rain into the wall every time it pours. That can lead to damp patches, staining and frost damage.
When it isn’t the sealant
We will not take on work that won’t last, so here’s what sealant cannot put right:
- Structural movement, which needs a surveyor or engineer
- Walls that need new movement joints cut into them
- Rising or penetrating damp from elsewhere in the wall
If in doubt, drop us a line at info@mrmastic.co.uk and we will say what we think.
Surfaces we seal
- Joints between brick and frames
- Concrete & block
- Render & cladding joints
- Copings & trims
- Façade panels
- Brickwork movement joints