Edinburgh · Scotland
Window Mastic in Corstorphine
Professional window mastic in and around Corstorphine, with every bit of old sealant taken out first and a 12-month guarantee.
- Gaps left after new windows were fitted
- Mastic that has split away from the wall
- Water coming in at the bottom corners of a door
How we handle window mastic in Corstorphine
Most frames have an outside joint and an inside one. Outside, the mastic keeps rain out; the internal joint closes the gap to the plaster and stops draughts. Either or both can be done. Typical jobs include damp patches on the reveal after heavy rain and draughty joints inside around the window, on composite doors, window sills and timber windows & doors.
Scotland’s cities are full of stone-built tenements and terraces, in sandstone or granite. Stone needs a sealant that suits it, so acetoxy silicones, which can attack some stone, are best avoided.
Our work is backed for twelve months.
- Place
- Corstorphine (EH12, EH4)
- Region
- Edinburgh
- Guarantee
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
For landlords and businesses
We regularly work with letting and managing agents. Tell us the address, the job and how access works and we’ll give you a quote.
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
DIY versus a professional finish
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs need the right product, the right access and the right method.
How the visit works
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. In total, it normally takes a few hours for a few frames, or a day or more for a whole house. In a city area like Corstorphine, parking may be by permit or pay-and-display, so tell us what’s nearby. For flats, mention the door entry system and any shared-stair arrangements.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry.
- Backing rod fills deep voids and the sealant goes in on top.
- The joint is shaped to shed water and the area tidied.
Preparing for the visit
- Where the joints are inside, avoid wetting them before we arrive
- Tell us about any water getting in
- Let us know about stairs, lifts or work at height
Ask for a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. Whenever you are ready, send an email to info@mrmastic.co.uk.
Related advice
Places near Corstorphine
What else we do in Corstorphine
Corstorphine homes and the weather
Corstorphine 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’s hard on the mastic around window and door frames, especially on the side facing the sea. Edinburgh’s Old and New Towns 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.
Schools such as Craigmount High School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages. For an older house near a landmark such as Corstorphine Collegiate Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. Letting a property close to South Gyle station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Corstorphine is about 3 miles west of West End, in Edinburgh. From the centre of Corstorphine to the outskirts, window mastic is available for homes and businesses alike. Corstorphine is one of 175 towns and villages in Edinburgh where we work.
Postcode districts we cover here for window mastic: EH12 and EH4. You’ll find streets such as Manse Road, Gordon Road and Station Road. If you’re just outside Corstorphine, we cover Wester Broom (1 mile south-west), Carrick Knowe (1 mile south-east), South Gyle (1 mile south-west), Drumbrae (1 mile north) and Clermiston (1 mile north). Within a short drive, we also cover Edinburgh (3 miles east), Leith (5 miles north-east), Bonnington (5 miles north-east), Greenside (4 miles east), Broughton (4 miles east) and Bellevue (4 miles east).
Landmarks near Corstorphine
Typical jobs here are in homes near The Torfin pub and Saughton Park, among other places. The nearest railway station is South Gyle station, roughly 0.7 miles south-west. Nearby you’ll also find Craigcrook Castle (1.1 miles north-east) and The Gyle Shopping Centre (1.1 miles west). The countryside around Corstorphine includes The New Leaf Co-op and Corstorphine Hill.
Keeping the joints in good condition
How long the joints last depends on use and care. We suggest:
- Do not use solvent cleaners on the joint
- Walk round the house once a year and look at the joints
- Ventilate rooms so frames do not stay wet inside
- Paint up to the joint, not over it
On timber frames, keep the paintwork in good order, because bare, wet timber moves more and pulls at the joint. Keep paint off the silicone itself.
Water gets in quietly when mastic fails. You might not see it until plaster blows or a damp patch appears inside. Catching it early keeps the fix to a reseal.
Leave it or put it right?
Failed mastic is not a reason to replace sound windows. If the frames and glass are in good order, resealing the joints is often all that’s needed. If we find failed glass units or worn seals, we will tell you. Wind-driven rain gets into any failed joint on the outside of a city building, and in a tall building in Corstorphine, damp can travel a long way before it shows.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote and we’ll talk you through it.
Why us?
- Rated 4.9 stars on Google
- Trusted Arbo and Everbuild sealants
- A 12-month guarantee on all work
- Anti-fungal sanitary silicone in wet areas
Read how sealant jobs are priced or our reviews.
What the job involves on each surface
Composite doors
If the door itself is draughty, the issue may be the door seals or hinges rather than the frame mastic. We will tell you if that is what we find.
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so a flexible sealant is essential. We seal onto sound, dry paintwork or timber.
What we cannot put right
Before booking, it’s worth knowing the limits too:
- Condensation trapped between the panes
- Damp coming through the wall itself rather than the frame joint
- Broken hinges, locks or handles
If in doubt, send an email to info@mrmastic.co.uk and we will say what we think before you book.
What we seal
- Timber windows & doors
- Aluminium frames
- Window sills
- Composite doors
- uPVC windows
- Patio & French doors
Common questions in Corstorphine
Do you work for landlords with property near South Gyle station?
Yes, we work for landlords and agents. Just email us at info@mrmastic.co.uk and tell us about the property, and we will send you a clear quote.
How is work on the outside of a tenement in Corstorphine generally arranged?
The owners of the flats usually 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.
Are you an approved applicator?
Yes. We are an ARBOMaster approved applicator.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all.
Can you reach windows above the ground floor?
Yes, where it’s safe. For high or awkward windows, we will tell you what access is needed.
Which products do you use?
Quality sealants from brands including Arbo and Everbuild, picked for each joint. We explain the product when we quote.
Is the new sealant paintable?
That depends on the product. Some hybrid sealants can be painted; silicone cannot. Tell us if you’re decorating and we’ll choose accordingly.
How do I get a quote for window mastic in Corstorphine?
Size, access and the old material all affect the cost. Ask us for a quote and we’ll talk you through it.