Edinburgh · Scotland
Comiston Remedial Sealant
Specialist remedial sealant for Comiston: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Dark patches showing through the sealant
- Sealant that came away because the surface wasn’t prepared
- Caulk or the wrong sealant used in a wet area
Remedial sealant in Comiston
Decorators’ caulk in a shower, bathroom silicone on a window, a rigid filler in a movement joint won’t last, however tidy it looks. Out it comes, and in goes a sealant suited to the job. If you have mould trapped under a layer of silicone and kitchen joints letting water behind the worktop, we can put it right, whatever the surface.
From stone-built tenements to new flats and suburban houses, Comiston is in a city with every kind of home. Scottish water is generally soft, so limescale is less of a problem than in hard-water areas, but mould still grows into sealant and grout in a steamy bathroom.
All our work is covered by our 12-month guarantee.
- Location
- Comiston (EH10, EH13)
- Wider area
- Edinburgh
- Cover
- A year, on every job
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What remedial sealant looks like in Comiston
Edinburgh has a lot of tenement flats, in the Old and New Towns and well beyond, and in a tenement, a leaking seal can reach the neighbours below. Scotland’s water is generally soft, so sealant and grout see less limescale than in much of England. Mould is another matter: a bathroom that stays damp still turns sealant and grout black.
If you look after a building such as Firrhill High School, its toilets, changing areas and kitchens need their sealant renewed like any other building’s.
Comiston is about 2 miles south of Edinburgh, in Edinburgh. Jobs in Comiston get the same care as everywhere else we work: the old material taken out, joints prepared properly and a 12-month guarantee. Across Edinburgh, we cover 175 places, and Comiston is one of them.
We cover every part of EH10 and EH13 for remedial sealant and the streets around it. We cover properties on 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). 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).
What’s near 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. Comiston’s nearest station is Slateford station, about 1.6 miles north-west of the centre. Well-known places in the area 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.
DIY sealant or a professional job?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
Sealing over old silicone is the commonest DIY error. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What we’re called out for in Comiston
How a joint is built matters as much as the product. A bead bonded on three sides, or laid too thick, can’t flex, and tears at the first real movement. Backing rod or bond-breaker tape prevents it.
Most people get in touch after spotting one of these:
- Smears and lumps from a botched reseal
- Floor or wall movement joints that have failed
- Kitchen joints letting water behind the worktop
- Dark patches showing through the sealant
Rented homes near Slateford station change hands often, and failed or mouldy sealant is worth putting right between tenancies, before it turns into a leak.
Comparing quotes
- When the joint can take water or movement
- Whether they seal over old material or remove it
- What preparation is included
- Whether you can choose the colour
Questions from Comiston
I let a flat near Slateford station. Can you help?
Yes. We work for landlords and agents as well as homeowners. You can drop us a line at info@mrmastic.co.uk with the details for a clear quote.
Is Comiston in your area for remedial sealant?
Yes, Comiston is within the area we cover. Our work covers the whole of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job.
Do you work for hotels and businesses?
Yes, regularly. Larger jobs can be planned room by room or area by area.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we are part of it.
Can you quote for more than one area?
Yes, and it often makes sense. Doing several areas at once is generally more efficient.
Someone resealed my shower and it’s leaking again. Can you help?
Yes. First we check whether the leak is the sealant at all, then the joints are stripped and resealed.
What if resealing will not fix my leak?
We’ll tell you. A cracked tray, faulty valve or leaking waste needs a different trade, so we won’t pretend it will.
Do you take out the old sealant first?
Yes. Sealing over the old bead is the commonest cause of early failure, so we never do it.
What affects the quote in Comiston
We quote each job individually. This is what makes a difference:
- How many areas need sealing
- Working hours on commercial sites
- How easy the joints are to reach
- The old material and how stubborn it is
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You will know the price before we begin.
Asking for a quote
Photos help, but a description is a good start. Try to tell us:
- If it’s domestic, commercial or a hotel
- How many joints, rooms or windows are involved
- The address or postcode of the job
- Any previous sealing or DIY work
Getting a quote is simple: let us know the job and the location. A few pictures by email make the job easier to understand.
What happens on the day
On the day, we look over the joints with you first. Surfaces next to the work are protected before work begins. Most jobs take a few hours for a typical bath or shower, longer where several layers have been applied. Inside a flat in Comiston, the job is planned with you; outside, shared parts may need the factor or other owners involved. Tell us which applies when you book.
- Surrounding tiles, trays and frames are protected first.
- Every layer of failed sealant is stripped out.
- The joint is degreased and checked for movement and leaks.
- Once dry, a suitable sealant is applied and tooled.
- We give you the cure time and explain what caused the failure.
Before we arrive
- Try not to wet indoor joints just before the visit
- On commercial sites, let us know about site rules
- Move anything stored near the joints
Get a quote
Every job is quoted individually, so start by telling us what you need. Simply send an email to info@mrmastic.co.uk and describe the job.
Related advice
Surface by surface
Windows & doors
Frames resealed over the top end up with hard, layered mastic. We remove it all and clean back to sound surfaces before backing and resealing.
Leaking trays & enclosures
A shower that leaks after resealing often has a tray that moves or an enclosure sealed on the wrong side. We check both before we reseal.
How to look after the new joints
Looking after new joints is easy, and it makes a real difference:
- Keep movement joints clear of mortar and paint
- Act on a lifting corner right away
- Keep the room well ventilated
- Report a tray that rocks or a worktop that lifts
If the joint ever needs renewing, have it cut out, not sealed over. New silicone does not bond to old, so the old bead should always come out first.
Leaks through failed sealant grow over time. Each use pushes more water behind the bead, into whatever is behind or below. Sorting it early limits the damage.
Landlords, agents and businesses in Comiston
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance.
Housing providers, facilities teams and property managers book us too in Comiston and across Edinburgh. We can quote a run of properties together, and we’re fully insured.