Edinburgh · Scotland
Hermiston Window Mastic
Specialist window mastic for Hermiston: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Rushed sealant from a window installation
- Hard, cracked sealant around windows
- A bead that does not match the frame
About our window mastic in Hermiston
There are two joints on most windows. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. We seal one or both, depending on what’s needed. We work on composite doors, aluminium frames and patio & French doors, and people most often call us about gaps between the frame and the inside reveal and old mastic that has gone black or come away.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
The work is covered for a year after we finish. If there’s a problem with it, please send an email to info@mrmastic.co.uk.
- Location
- Hermiston (EH12, EH14)
- Region
- Edinburgh
- Cover
- One year on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Your questions about window mastic in Hermiston
Is Hermiston within the area you cover?
Yes, we do. We work across all of Scotland, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Is Hermiston in your area for window mastic?
Yes, Hermiston is within the area we cover. We work across all of Scotland. Just send an email to info@mrmastic.co.uk with a few details of the job.
Do I have to be there?
That depends on where the joints are. Inside work needs someone to give us access, and for outside work we’ll agree access with you when we book.
Do you seal inside as well as outside?
Yes. Plenty of draughts come through the inside joint as well as the outside, so it can be worth sealing both.
How long should I leave it?
It depends on the product and the temperature. Before we leave, we will tell you the cure time.
Can new window sealant be painted?
Not if it’s silicone. Tell us your decorating plans and we will pick a sealant to suit.
What information do you need?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply drop us a line at info@mrmastic.co.uk.
Do the sealants smell?
It depends on the product. Some smell for a while, some hardly at all.
Keeping the joints in good condition
After the cure time, these simple habits help:
- Use gentle cleaners on frames and sealant
- Paint up to the joint, not over it
- Ventilate rooms so frames do not stay wet inside
- Do not use solvent cleaners on the joint
A yearly look round the frames is enough. Small splits are simple to catch before they leak, and if anything looks wrong, just drop us a line at info@mrmastic.co.uk.
On timber windows, water behind the joint can lead to rot. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
Why act early in Hermiston
Resealing frames is a short job: the visit takes anything from an hour or two to a full day, depending on how many frames there are. Wait for damp to appear and there may be plaster and decorating to sort out too. Around Hermiston, water from a failed joint in an older stone home can soak into timber and plaster.
What it costs depends on the amount of work, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Why book with us
- Arbo and Everbuild products
- A sealant colour to suit the surroundings
- 20+ years of sealant experience
- We agree the colour with you first
See our cost guide and customer reviews.
What affects the cost of window mastic
The price is agreed before any work begins. It takes into account:
- Access and height
- How many areas need sealing
- The type of sealant required
- When we can work, for business premises
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first.
Helping us quote
When you contact us, these details help:
- A few photos by email, if you can
- The rough size of the job
- Any access issues, like height or stairs
- Where the job is, and your postcode
For window mastic in Hermiston, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Work for landlords, hotels and businesses
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.
From a single let to a portfolio, you get the same standard of work: old sealant fully removed, joints prepared properly and a one-year guarantee.
How it works
We bring everything the job needs with us, so there’s nothing for you to buy. After a quick look at the joints together, we protect the area and start. Most jobs take most of a day for a typical house, less for a few frames. Somewhere like Hermiston may be a longer drive, and the journey is planned ahead. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- First we look at every frame and agree the list.
- The old mastic is cut out and the surfaces cleaned back.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- Every joint is checked before we leave.
How to prepare
- Let us know if you’ve seen damp or leaks
- Mention if the joints have been sealed before
- Tell us if parking is tricky
Getting a quote
Getting a quote is simple: let us know the job and the location and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.
Advice
DIY versus a professional finish
If you are set on DIY, put the effort into 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.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
Different surfaces, different methods
Composite doors
Draughts round the door leaf normally come from worn seals or adjustment, not the mastic. We’ll tell you if that is what we find.
Aluminium frames
Coated aluminium needs a compatible sealant, and acetoxy silicones aren’t used, as they can attack some metals. We use a neutral-cure product.
Nearby places to Hermiston
What else we do in Hermiston
Frames and glazing around Hermiston
Edinburgh’s Old and New Towns 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. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
Around Hermiston, as everywhere, window mastic is only as good as the preparation behind it. If you let a flat or house near Edinburgh Park station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Hermiston is about 5 miles west of Edinburgh, in Edinburgh. If you need window mastic in Hermiston, please drop us a line at info@mrmastic.co.uk for a quick quote. We’re based in Crawley and cover Edinburgh. Hermiston is one of 175 towns and villages in Edinburgh where we work.
Our applicators cover all of the EH12 and EH14 postcode area for window mastic. Streets in the area include Gogar Station Road, Hermiston House Road and Hermiston Steading, all of which we cover. We also cover the places around Hermiston: Riccarton (1 mile south), Gogar (1 mile north-west), Maybury (1 mile north), Warriston (1 mile south-west) and West Craigs (1 mile north). Further out, we also cover Edinburgh (5 miles east), Leith (7 miles north-east), Bonnington (6 miles north-east), Greenside (6 miles north-east), Broughton (6 miles north-east) and Bellevue (6 miles north-east).
Around Hermiston
Hermiston’s nearest station is Edinburgh Park station, roughly 0.6 miles north-east of the centre. Well-known places in the area include ICE Scotland Museum (0.8 miles south) and The Gyle Shopping Centre (1.2 miles north). Not far away are The New Leaf Co-op and Warklaw Hill.