Edinburgh · Scotland
Comiston External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for homeowners, landlords and businesses in Comiston. Fully insured, ARBOMaster approved and guaranteed for a year.
- Damp patches traced to an open external joint
- Failed seals between different materials
- Moss and dirt in joints with no sealant left
External mastic for homes and businesses in Comiston
Low-level joints can usually be done from the ground. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. Typical jobs include cracked joints where brick meets render or frames and joints where the bead has come unstuck, on façade panels, copings & trims and brickwork movement joints.
In a Scottish city tenement, the roof, gutters and outside walls are shared by all the flats. In Comiston, work on shared parts of a tenement is generally agreed between owners, often with a factor arranging it.
Whatever the size of the job, you get the same 12-month guarantee.
- Where
- Comiston (EH10, EH13)
- Region
- Edinburgh
- Cover
- A year, on every job
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Aftercare tips
Aftercare is simple:
- Check external joints each spring
- Leave the joints unpainted unless we’ve said otherwise
- Make sure movement joints aren’t pointed over
- Fix overflowing gutters above sealed joints
Don’t let soil, plants or ivy build up against the new joints. Damp material against the sealant shortens its life.
Gaps, plants or missing sealant in a joint are worth getting looked at. Earlier resealing means a smaller job and a better result.
Your questions about external mastic in Comiston
How do repairs to the shared parts of a tenement in Comiston get organised?
Most tenements arrange shared repairs through the owners or a property factor. The Tenements (Scotland) Act 2004 covers the common parts where the deeds do not.
I let a flat near Slateford station. Can you help?
Yes, rental work is part of what we do. You can drop us a line at info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before any work starts.
Do you have insurance?
Yes. We’re fully insured, and we have been doing sealant work for more than 20 years.
Do you guarantee your work?
Yes, for a year. If anything isn’t right with the work within the year, let us know and we will sort it.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do. We can talk about working times when we quote.
Where are you based?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. Most DIY failures come from sealing over old material, wet joints or too much sealant.
Do you use backing rod?
Backing rod goes into deeper joints as a matter of course. It controls the depth and stops the sealant bonding to the back, so the joint can move.
Honest limits
A few problems are outside what sealant work can do:
- Cracking across the wall rather than at a joint
- Loose or hollow render, which needs re-rendering
- Movement that’s more than a sealant joint can take
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly before you book.
What we seal
- Concrete & block
- Façade panels
- Joints between brick and frames
- Render & cladding joints
- Copings & trims
- Brickwork movement joints
Outside joints around Comiston
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. Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex.
Schools such as Firrhill High School are buildings too, and larger buildings have long runs of movement joint that eventually need resealing. Rented homes near Slateford station change hands often, and failed wall and movement joints let damp in, so they’re worth checking between tenancies. Historic houses such as Whitefoord House, about 3.2 miles north-east, show how far back building around Comiston goes, and older homes nearby need a sealant that suits their walls.
Comiston is about 2 miles south of Edinburgh, in Edinburgh. Comiston gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a 12-month guarantee. 175 places in Edinburgh are on our list, from the larger towns to small villages.
Postcode districts we cover here for external mastic: EH10 and EH13. You will find streets such as Braid Road, Camus Avenue and Comiston Road. We also cover the places around Comiston: Oxgangs (1 mile south-west), Greenbank (1 mile north-west), Caiystane (1 mile south), Buckstone (1 mile east) and Colinton Mains (1 mile west). Within a short drive, we also cover Leith (5 miles north), Bonnington (4 miles north), Greenside (3 miles north), Broughton (3 miles north), Bellevue (4 miles north) and Silvermills (3 miles north).
Landmarks near Comiston
In Comiston, that means homes and buildings near Army School of Bagpipe Music and Highland Drumming and Harrison Park, among other places. For rail, the closest station is Slateford station, roughly 1.6 miles north-west of the centre. Other landmarks nearby include Cameron Toll Shopping Centre (2.2 miles north-east) and Cockburn Geological Museum (1.8 miles north-east). The countryside around Comiston includes Duddingston Loch and Craiglockhart Hill.
Leave it or put it right?
Done well, a resealed joint is a neat, straight line that suits the wall. A hurried job with smeared edges and no backing looks worse and fails sooner so it’s worth doing right. Private landlords in Comiston must meet the Repairing Standard, and damp or leaks can fall short of it, so it’s worth fixing failed sealant before a tenant reports it.
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- Experience in homes, commercial sites and hotels
- Fully insured
- Colour agreed with you before we start
What we do, step by step
We keep the work tidy and contained to the area we are working on. The job generally takes a few hours for a handful of joints, longer for a whole elevation. In a Scottish city, a lot of jobs are in tenement flats, up a common stair from a shared close. In Comiston, it helps to know the floor, the door entry arrangements and the nearest parking.
- 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.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Before we arrive
- Try not to wet indoor joints just before the visit
- Clear items away from the joints we are working on
- For business premises, tell us about site rules or sign-in
Getting a quote
Getting a quote is simple: let us know the job and the location. Photos by email help us understand the job.
Read more
For landlords and businesses
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we 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.
Surface by surface
Render joints
Render has movement joints and stop beads that need sealing. We reseal them with a flexible exterior sealant that suits the render colour.
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.
Also in Comiston
Quotes for external mastic in Comiston
You will get a clear quote before any work starts. It’s based on:
- How much there is to do
- The old material and how stubborn it is
- Whether there’s mould to deal with
- The type of sealant required
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. Your quote takes all of that into account.
Asking for a quote
You don’t need to know the technical terms. Just tell us:
- Whether it has been sealed before
- If it’s domestic, commercial or a hotel
- How we’d reach the joints
- Photos by email, if that’s easy
Call for a quick quote, or email us if that’s easier. Tell us about the joints that need doing and we’ll explain what’s involved and give you a clear quote.