Edinburgh · Scotland
Comiston New Build Mastic
Plot mastic for developers and snagging failed sealant in new homes for homes and businesses in Comiston and across Edinburgh. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Plot mastic for developers ahead of handover
- Frame joints opening as the plaster dries
- Leaking shower tray seals in a new home
Surface by surface
Show homes
We can refresh show-home sealant that has discoloured or been knocked. The old bead comes out and a clean new one goes in.
Plot handovers
Taking time over preparation reduces return visits. Dust from the build is removed first.
New build mastic in Comiston, done properly
Building dust is behind a lot of failed new-build sealant. Each joint is cleaned of dust and primed where the product calls for it, so the sealant actually sticks. We work on skirting & floors, show homes and plot handovers, and common reasons people get in touch are gaps behind new kitchen upstands and internal frame sealant that has split.
Older tenement flats normally have timber floors on joists, with skirting joints that open and close with the seasons. For a flat in Comiston, a flexible sealant copes with that movement where filler would crack.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Comiston (EH10, EH13)
- Region
- Edinburgh
- Cover
- A year, on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Also in Comiston
FAQs for Comiston
Can you help a landlord with a rental near Slateford station?
Yes. We work for landlords and agents as well as homeowners. Just drop us a line at info@mrmastic.co.uk with the address and what needs doing, and we’ll give you a clear quote.
Is Comiston in your area for new build mastic?
Yes, Comiston is within the area we cover. We work across all of Scotland. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we’ll give you a clear price.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint.
Should I wait before resealing?
It depends on whether water is getting through. A leaking shower or bath seal should be redone right away, but cosmetic gaps can wait for movement to slow.
Can I add another job to the visit?
Yes. Just list everything you need and you’ll get one quote.
What should I tell you?
Only a few details: the address or postcode, what’s wrong and any access issues. After that, simply email us at info@mrmastic.co.uk.
Does someone need to be in?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
How we quote for new build mastic
Every job gets its own quote. This is what makes a difference:
- Working hours on commercial sites
- The number of rooms or windows
- Whether the work is at height
- The type of sealant required
We do not show prices on the website, because each job is priced on what it involves. Call for a quick quote.
What to tell us for a quote
What to tell us when you ask for a quote:
- Where the property is
- If it’s domestic, commercial or a hotel
- What the problem is, such as mould, gaps, leaks or cracking
- The rough size of the job
The more we know about the job, the more useful the quote. Let us know the location, the problem and roughly how many joints, and email photos if that’s easy.
New build mastic around Comiston
Many new homes in Scotland are timber-framed, so skirting and sealant joints can open up as the building settles.
Around Comiston, as everywhere, new build mastic is only as good as the preparation behind it.
Comiston is about 2 miles south of Edinburgh, in Edinburgh. From the centre of Comiston to the outskirts, we cover new build mastic for every kind of property, from flats and houses to offices and hotels. Comiston is one of 175 towns and villages in Edinburgh where we work for new build mastic.
We cover every part of EH10 and EH13 for new build mastic and the streets around it. Whether your property is on Braid Road, Camus Avenue and Comiston Road or anywhere close by, we can help. Nearby, we also carry out new build mastic in Oxgangs (1 mile south-west), Greenbank (1 mile north-west), Caiystane (1 mile south), Buckstone (1 mile east) and Colinton Mains (1 mile west). We also work in nearby towns such as 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).
Around Comiston
Locally, jobs take us to homes and businesses close to Army School of Bagpipe Music and Highland Drumming and Harrison Park, among other places. The nearest railway station is Slateford station, roughly 1.6 miles north-west of the centre. Nearby you will also find Cameron Toll Shopping Centre (2.2 miles north-east) and Cockburn Geological Museum (1.8 miles north-east). For a walk, there’s Duddingston Loch and Craiglockhart Hill.
When to call us in Comiston
If plaster or screed was still damp when it was sealed, the bond suffers. Site programmes don’t always leave time for joints to dry before the sealant goes on.
Common reasons people contact us include:
- Frame joints opening as the plaster dries
- Sealant applied over dusty or wet surfaces
- Second-fix sealing on new plots
- Kitchen sealant that has pulled off the wall
If you’ve bought a new home near Slateford station, the sealant around baths, showers and frames is worth checking in the first year or two.
Before booking anyone
- Whether VAT is included
- What happens if the job turns out different
- What preparation is included
- How long the guarantee is
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. It won’t solve:
- Settlement cracks that need a surveyor
- Broken tiles or a split tray
- Baths and trays that move too much for sealant to cope with
If you’re not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer before you book.
Surfaces we seal
- Show homes
- Kitchens
- Plot handovers
- Windows & doors
- Bathrooms & en suites
- Skirting & floors
Looking after it afterwards
Aftercare is simple, and it makes a real difference:
- Record problems with dated pictures
- Do not seal over failed sealant yourself
- Act quickly if a seal starts to leak
- Look at the sealant regularly in the first couple of years
Keep an eye on the joints over the first couple of years. Small gaps can appear as the house dries, and they’re simple to reseal once movement has slowed.
Mould takes hold quickly in sealant that has gaps or lifted edges. Dealing with it before it goes black keeps the job straightforward.
For landlords and businesses
Whether it’s one flat or a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Businesses can book us for washrooms, kitchens, offices and more. For commercial premises, we can talk through working times when we quote.
The process
We keep the work tidy and contained to the area we are working on, so you can get on with your day. Expect the work to take a few hours in a single home. 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.
- First, the list of joints is agreed from your snagging sheet or plot schedule.
- Every bit of the old builder’s sealant is cut out down to clean surfaces.
- We clean out the dust and grit left from the build.
- Primer goes on where the surface and product need it, then the new sealant.
- Each bead is tooled and the cure times explained.
How to prepare
- Tell us about any previous sealing or DIY attempts
- Mention any parking rules near the property
- Tell us about any water getting in
Ask for a quote
For new build mastic in Comiston, send an email to info@mrmastic.co.uk. Tell us what the problem is and where, and you will get a clear quote before any work starts.