Edinburgh · Scotland
Comiston Sand Mastic
Sand mastic for Comiston and the surrounding area: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Wind and rain getting in round a sash window
- Window mastic to renew ahead of painting
- A silicone bead on a sash window that spoils the look
About our sand mastic in Comiston
Our applicators renew the sand mastic around sash and case windows and doors in stone and brick. The old mastic is raked out, the joint is prepared and new mastic is shaped by hand. If you’re dealing with cracked mastic round a front door frame and modern sealant on a period surround, we can put it right, on sash and case windows, brick reveals and stone surrounds alike.
Tenement flats in Scotland’s cities often have windows high above the street, where failing mastic is easy to miss. Access is the first thing to plan for a job in Comiston.
You get a one-year guarantee, the same in Comiston as everywhere else we work.
- Location
- Comiston (EH10, EH13)
- Wider area
- Edinburgh
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
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.
Whether it’s one flat or a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Do you need sand mastic in Comiston?
Rain on the window surround works into any crack and pushes it out. Exposed elevations generally fail first.
These are the problems we are asked about most:
- Mastic that needs renewing before redecorating
- Mastic worn away on windows facing the weather
- Draughty sash windows at the surround
- A silicone bead on a sash window that spoils the look
For landlords with property near Slateford station, older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- What product goes in the joint
- How the joint is cleaned and prepared
- Who does the work, and how experienced they are
- Whether they seal over old material or remove it
Comiston: your questions answered
Do you work for landlords with property near Slateford station?
Yes, rental work is part of what we do. Just email us at info@mrmastic.co.uk and tell us about the property, and we will send you a clear quote.
Do you cover Comiston for sand mastic?
Yes, Comiston is within the area we cover. Our work covers the whole of Scotland. You can drop us a line at info@mrmastic.co.uk and let us know what needs doing.
Is it OK to seal over old sealant?
No, it will not last. It can look neat for a few weeks, but the new layer lifts away from the old one. The old sealant has to come out completely.
What guarantee comes with the work?
You get our one-year guarantee on every job.
Is sand mastic better than silicone for my windows?
It depends on the window. Period windows in stone or brick usually suit sand mastic, while modern frames normally get a flexible sealant.
Should I try DIY first?
You can, for simple jobs. Preparation is everything: all the old sealant out, and a clean, dry joint. If it doesn’t work out, we can redo it.
What is sand mastic?
Sand plus a binder based on linseed oil. It’s applied by hand and finished to sit neatly against the masonry.
When will the new mastic be hard?
It forms a skin fairly soon, then hardens over a longer period. Timing depends on the weather and the joint.
Leave it or put it right?
Draughts round a sash window are not always the sashes. Gaps between the frame and the wall can be just as bad and new mastic seals them. 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.
No two jobs are quite the same, so each one gets its own quote. Size, access and the product the joint needs all make a difference, and we’ll explain the quote if you ask.
Why us?
- 4.9 on Google from 180+ five-star reviews
- Domestic, commercial and hotel work
- 20+ years of sealant experience
- A 12-month guarantee on all work
Read what affects the cost and our reviews.
Can I do it myself?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
What we do, step by step
A visit follows a simple pattern: we look at the joints together, protect the area around them, do the work and tidy away. It generally takes anything from a few hours to a full day, depending on how many windows. Many homes in Scotland’s cities are tenement flats, reached through a shared close and up a common stair. In Comiston, it helps to know the floor, the door entry arrangements and the nearest parking.
- We check the window surrounds and agree which joints need renewing.
- We rake out the old mastic and clean the joint.
- We pack any deep gaps so the mastic sits at the right depth.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The finish is dressed so it sits neatly against the stone or brick.
Before we arrive
- Mention if the joints have been sealed before
- Clear items away from the joints we are working on
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
To get a quote, email us 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.
Related advice
Windows and doors in Comiston
Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic. The Old and New Towns of Edinburgh are a UNESCO World Heritage Site, with sash windows throughout the Georgian New Town. If a home is listed or in a conservation area, it’s worth checking with the council before changing the look of windows or walls.
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. Schools such as Firrhill High School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
Comiston is about 2 miles south of Edinburgh, in Edinburgh. Every kind of property in Comiston can book us for sand mastic, old or new, large or small. The work is guaranteed for a year. Our area takes in 175 places across Edinburgh, large and small.
Our applicators cover all of EH10 and EH13 for sand mastic. Sand mastic is available to properties on Braid Road, Camus Avenue and Comiston Road. Close by, we work 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). Further out, 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
We work in homes and buildings around Army School of Bagpipe Music and Highland Drumming and Harrison Park. For rail, the closest station is Slateford station, roughly 1.6 miles north-west. A little further out are Cameron Toll Shopping Centre (2.2 miles north-east) and Cockburn Geological Museum (1.8 miles north-east). Green spaces nearby include Duddingston Loch and Craiglockhart Hill.
What else we do in Comiston
Quotes for sand mastic in Comiston
There’s no set price list, because no two jobs are the same. The quote depends on:
- Which sealant suits the joint
- How many areas need sealing
- Whether there’s mould to deal with
- How much old sealant there is and how hard it is to remove
What it costs depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You will have a clear quote before any work starts.
What we need to know
When you call or email, it’s useful to know:
- What’s wrong with the joints now
- Any previous sealing or DIY work
- Where the property is
- The rough size of the job
There’s no standard price list, because every job is different. Instead, we give you a clear price for your job. To get started, send an email to info@mrmastic.co.uk.
When it is not the sealant
New sealant cannot fix everything, and we will tell you before any work starts. It will not solve:
- Sash cords, weights and draught-proofing of the sashes
- Damaged stone surrounds
- Whether work needs listed building consent
If you’re not sure, just send an email to info@mrmastic.co.uk and we’ll give you a straight answer.
Surfaces we seal
- Brick reveals
- Stone surrounds
- Tenement windows
- Timber door frames
- Sash and case windows
- Period & listed homes