Edinburgh · Scotland
External Mastic in Holy Corner
External mastic in Holy Corner from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Gaps where render, brick and frames meet
- Sealant pulling away from one side of the joint
- Plants rooting in failed movement joints
How we handle external mastic in Holy Corner
Movement joints let brickwork, render and cladding expand and shrink without cracking. The sealant in it has to stretch and squeeze for years, so once it splits or hardens, the joint stops working and water gets in. Typical jobs include weeds or debris growing in open joints and old sealant gone brittle and cracked, on façade panels, render & cladding joints and joints between brick and frames.
Alongside their tenements, Scotland’s cities have modern blocks with render, cladding and movement joints. Around Holy Corner, as anywhere, those joints dry out and crack over time, letting water behind the face of the building.
Our work is backed for twelve months, in Holy Corner and everywhere else we cover.
- Where
- Holy Corner (EH10, EH11, EH9)
- Wider area
- Edinburgh
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
What affects the quote in Holy Corner
There’s no set price list, because jobs vary so much. The quote depends on:
- Whether there’s mould to deal with
- The number and length of the joints
- The type of sealant required
- Whether the work is at height
Leaving a failed joint normally makes the job bigger, not smaller. If you are unsure, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
Helping us quote
Before you ask for a quote, have a think about:
- Any access issues, like height or stairs
- The address or postcode of the job
- Whether it has been sealed before
- Roughly how big the job is
To get a quote, drop us a line at info@mrmastic.co.uk and tell us where the job is and what the problem looks like. We will send you a clear quote before any work starts.
DIY versus a professional finish
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. It generally takes anything from a few hours to several days, depending on the building. In a Scottish city, a lot of jobs are in tenement flats, up a common stair from a shared close. In Holy Corner, it helps to know the floor, the door entry arrangements and the nearest parking.
- First, the joints are inspected and the access agreed.
- 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.
How to prepare
- Let us know if you’ve seen damp or leaks
- Mention if the joints have been sealed before
- On commercial sites, let us know about site rules
Ask for a quote
Getting a quote is simple: tell us what needs doing and where and its rough size. A few photos by email make the job easier to understand.
Related advice
Do you need external mastic in Holy Corner?
UV, rain and frost all age exterior sealant. In time it goes hard, crazes on the surface and stops stretching, so the next time the wall moves, it splits or pulls away.
People generally contact us after spotting one of these:
- Weathered mastic that no longer stretches
- Water getting into walls through failed joints
- Joints with sealant missing in places
- Plants rooting in failed movement joints
Managing a site like Iain Tomlin School of Music? Then movement joints, cladding joints and gutters on larger buildings need the same care as a house’s.
Questions to ask before you book
- How hidden problems are handled
- How the joint is cleaned and prepared
- How long to leave it before use
- Which sealant they’ll use, and why
FAQs for Holy Corner
Do you work for landlords with property near Haymarket station?
Yes, landlords and agents are among the people we work for. You can email us at info@mrmastic.co.uk with the details for a clear quote.
Does living near the coast affect external mastic in Holy Corner?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Are you insured?
Yes. We’re fully insured, with over 20 years’ experience in sealant work.
Do you cover Holy Corner?
Yes. We cover Holy Corner, as part of our work across South East England, London and Scotland. For a quote, email us at info@mrmastic.co.uk.
Is the work guaranteed?
Yes. All our work carries our one-year guarantee.
What is backing rod for?
Backing rod controls the sealant depth and keeps it off the back of the joint. Then the sealant bonds to two faces and can move.
Is it OK to seal over old sealant?
No. The old sealant always comes out first.
Can you seal joints between render and window frames?
Yes. We cut out the old sealant, prepare both faces and reseal with a flexible exterior product. The colour is chosen to suit.
Walls and rooflines in Holy Corner
Holy Corner is within about 3 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. The Old and New Towns of Edinburgh are a UNESCO World Heritage Site, with sash windows throughout the Georgian New Town. For listed homes and conservation areas, check with the council before changing how windows or walls look.
If you let a flat or house near Haymarket station, split movement joints are easy to miss on a rental until damp shows inside. Homes close to North Morningside Church include some older properties, and older walls, gutters and the joints where extensions meet them need a flexible sealant.
Holy Corner is about 1 mile south of Edinburgh, in Edinburgh. Whether you’re in the middle of Holy Corner or further out, external mastic is available for homes and businesses alike. Holy Corner is one of 175 towns and villages in Edinburgh where we work for external mastic.
All of EH10, EH11 and EH9 is covered for external mastic, from the main roads to the quietest streets. If you need external mastic at a property on Eden Lane, Spylaw Road and Canaan Lane or a nearby road, our applicators can take on the job. Other places close to Holy Corner include Burghmuirhead (1 mile south), Greenhill (1 mile east), Church Hill (1 mile south), Merchiston (1 mile north) and Bruntsfield (1 mile north-east). Larger places within reach include Leith (4 miles north-east), Bonnington (3 miles north-east), North Leith (3 miles north), Queensferry (8 miles north-west), Timber Bush (3 miles north-east) and Lochend (3 miles north-east).
Local landmarks in Holy Corner
Around Holy Corner, our work takes us to homes and buildings near St Cuthbert's Church, Tollcross Primary School and Bruntsfield Links. You’ll also find Boroughmuir High School (less than half a mile north), National Museums Scotland Library (1.2 miles north-east) and Golf Tavern (0.5 miles north-east). The closest station to Holy Corner is Haymarket station, roughly 0.8 miles north-west of the centre. Nearby you will also find Bruntsfield Hospital (under half a mile east) and Waverley Mall (1.5 miles north-east). Green spaces nearby include Blackford Hill and Dunsapie Loch.
What happens if it’s left?
A low-modulus sealant is chosen because it moves without pulling hard at the edges. That protects surfaces like brick, render and concrete. A stiffer product can damage the joint edge as it fails. For landlords in Holy Corner, damp and leaks can be a Repairing Standard issue, so it’s worth fixing failed sealant before a tenant reports it.
What you pay reflects the work, not a rough estimate. That’s why we ask a few questions first and agree the price before starting.
Why us?
- Sealant colour chosen to suit
- White, clear, grey or coloured to suit, where the product allows
- 4.9 on Google from 180+ five-star reviews
- A 12-month guarantee on all work
See our cost guide and customer reviews.
Also near Holy Corner
More services for Holy Corner
Aftercare tips
To keep the joints looking good and working properly:
- Fix overflowing gutters above sealed joints
- Tell anyone working on the walls about the movement joints
- Walk round the building once a year and look at the joints
- Have failed joints looked at early
Keep the joints clear of soil, plants and climbing growth. Damp material against the sealant shortens its life.
Once a joint cannot move, the wall finds another way, usually as cracking in the brickwork or render nearby. Catch it early and you reduce the risk.
Different surfaces, different methods
Copings and trims
A failed coping joint lets water into the top of the wall. Resealing them is a small job that protects a lot.
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it so the sealant is not too deep.