Edinburgh · Scotland
External Mastic in Greenside
Sealing brickwork movement joints, render, cladding and façade joints in Greenside, with a one-year guarantee on every job. Call for a quick quote.
- Movement joints filled with mortar instead of sealant
- Old sealant gone brittle and cracked
- Sealant pulling away from one side of the joint
External mastic for homes and businesses in Greenside
Where two different materials meet, such as brick and render or blockwork and metal, they move at different rates. A flexible exterior sealant takes up that movement. We’re often asked to deal with old sealant gone brittle and cracked and rain getting behind render or cladding at a joint, on render & cladding joints, joints between brick and frames and copings & trims.
Scotland’s cities also have plenty of modern blocks with rendered or clad walls and sealed movement joints. Around Greenside, as anywhere, those joints dry out and crack over time, letting water behind the face of the building.
All of our work is guaranteed for twelve months, and the guarantee is the same wherever you are.
- Where
- Greenside (EH7, EH1, EH3)
- Region
- Edinburgh
- Guarantee
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Keeping the joints in good condition
Aftercare is simple, and it makes a real difference:
- Avoid pressure-washing directly into sealant joints
- Never let anyone fill a movement joint with mortar
- Get split or bare joints resealed while the damage is small
- Point out the joints to other trades
Give the sealant the cure time we tell you before anything rubs against it. Most exterior sealants skin fast but take longer to cure right through.
Small splits are the time to act. At that stage it’s a simple cut out and reseal.
What else we do in Greenside
When to call us in Greenside
Using the wrong sealant is another common reason. A high-modulus or general-purpose sealant can be too rigid for a busy joint, and it tears off the sides.
Signs it’s time to call us include:
- Water getting into walls through failed joints
- Joints with sealant missing in places
- Weeds or debris growing in open joints
- Failed seals between different materials
If you look after a building such as London Street Primary School, its movement joints, gutters and trims need looking after like any other building’s.
What to look for in a quote
- How long the guarantee is
- Which colour the sealant will be
- What happens if they find a problem under the old sealant
- Are they insured?
Walls and rooflines in Greenside
Greenside is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on movement joints and outside wall joints, especially on the side facing the sea. 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.
If you live in an older home near St Cuthbert's Church, an extension built onto an older house moves differently, and the joint between them takes the strain. Letting a property close to Edinburgh Waverley station? Then split movement joints are easy to miss on a rental until damp shows inside.
Greenside is about 1 mile north-east of Edinburgh, in Edinburgh. If you need external mastic in Greenside, please email us at info@mrmastic.co.uk for a quick quote. We’re based in Crawley and cover Edinburgh, Greenside included. Greenside is one of 175 towns and villages in Edinburgh we cover for external mastic.
Work in EH7, EH1 and EH3 works the same way as everywhere else we cover. That includes homes and businesses on York Lane, Meuse Lane and High Street and the roads around them. Being close to the A900, Greenside is simple for us to get to for external mastic. If you’re just outside Greenside, we cover Broughton (1 mile north-west), Gayfield (1 mile north), Bellevue (1 mile north-west), Canongate (1 mile south-east) and Holyrood (1 mile south). Within a short drive, we also cover Queensferry (8 miles west), South Portobello (3 miles east), Southhouse (4 miles south), Gilmerton (4 miles south-east), Muirhouse (3 miles west) and Slateford (3 miles south-west). Greenside is among the bigger towns we cover in Edinburgh.
Local landmarks in Greenside
Locally, jobs take us to homes and businesses close to King George V Park, McDonald Road Library and The Playfair pub, among other places. Nearby too are Old Royal High School (under half a mile south-east) and Mannafields Christian School (0.6 miles north-east). There’s a railway station in Greenside itself: Edinburgh Waverley station. A little further out are St. James Centre (less than half a mile south-west) and Victorian Pharmacy Museum (within half a mile west). Green spaces nearby include The New Leaf Co-op and Dunsapie Loch.
DIY sealant or a professional job?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it doesn’t work out, we can still put it right.
A careful DIYer can reseal a simple joint, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes anything from a few hours to several days, depending on the building and we leave things clean and tidy. In a Scottish city, a lot of jobs are in tenement flats, up a common stair from a shared close. For a job in Greenside, tell us the floor, how the door entry system works and where we can park nearby.
- We inspect the joints and agree which need resealing and how they’ll be reached.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- Backing rod goes in next, setting the depth and keeping the sealant off the back of the joint.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Getting ready for the visit
- Mention any tricky access
- Tell us about any water getting in
- Plan for the work area to be out of bounds to pets and children
How to get a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. Whenever you’re ready, send an email to info@mrmastic.co.uk.
Related advice
Your questions about external mastic in Greenside
I let a flat near Edinburgh Waverley station. Can you help?
Yes. We work for letting agents and landlords as well as homeowners. Just send an email to info@mrmastic.co.uk with the address and what needs doing, and we will give you a clear quote.
Who arranges sealant work on the shared parts of a tenement in Greenside?
The owners of the flats normally agree repairs to shared parts like the roof and outside walls, and many buildings have a factor to arrange it. Where the title deeds are silent, the Tenements (Scotland) Act 2004 fills the gaps. Your title deeds will say who owns the windows.
Do you have insurance?
Yes. We’re fully insured, and we can confirm the details when we quote.
How long does external mastic last?
It depends on the exposure, the movement and the product. Sealant is a maintenance item, so check the joints once a year.
Why do you put foam in the joint first?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
Do you remove the old sealant?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
How long before the joint can be used?
Cure times vary by product. We tell you how long to leave it before we go.
What’s an expansion joint in brickwork?
Brickwork, render and cladding all move a little, and planned joints take up that movement. It’s closed with backing rod and a flexible sealant.
What the job involves on each surface
Copings and trims
Joints in copings, parapets and trims are exposed to the worst of the weather. Each is resealed with a weatherproof, flexible sealant.
Joints between dissimilar materials
Brick against render, concrete against metal, stone against timber: every change of material is a joint. We seal the joint with a flexible exterior sealant so neither cracks the other.
Why deal with it now?
Pointing a movement joint with mortar might seem a neat fix, 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. In a Scottish city tenement, failed sealant affects more than one flat: a leak can come through the ceiling below, and gaps in shared walls or fire-rated joints matter to every flat.
Leaving a failed joint generally makes the job bigger, not smaller. If you are not sure whether it needs doing, email us at info@mrmastic.co.uk for an honest opinion and a quote.
What you get with us
- A 12-month guarantee on all work
- Old sealant always removed completely
- Experience in homes, commercial sites and hotels
- You choose the colour before work begins
See our cost guide or customer reviews.
What affects the cost of external mastic
We quote each job individually. This is what makes a difference:
- How much there is to do
- The number of rooms or windows
- Which sealant suits the joint
- When we can work, for business premises
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Asking for a quote
There’s no need for technical detail. Just tell us:
- The address or postcode of the job
- If someone has resealed it before
- Any access issues, like height or stairs
- Roughly how big the job is
There’s no standard price list, because every job is different. Instead, we give you a clear quote for your job. To arrange one, email us at info@mrmastic.co.uk.