Edinburgh · Scotland
Window & door mastic in Northfield, Edinburgh
Mastic around window and door frames, sills and patio doors for Northfield, backed by a 12-month guarantee. Ask us for a quote.
- Untidy mastic left by window fitters
- Rain getting in at the frame or under the sill
- Mastic that has split away from the wall
When something else is needed
We’d rather tell you now than do work that won’t last, so here’s what sealant can’t put right:
- Damp problems in the wall away from the window
- A frame that has rotted at the joint
- A failed sealed unit that has misted up
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly.
What we seal
- Window sills
- Aluminium frames
- Timber windows & doors
- Composite doors
- uPVC windows
- Patio & French doors
Window mastic in Northfield
Some gaps around frames are far deeper than they look. Filling it with sealant alone leaves a joint that cannot move properly, so deep gaps get backing rod first. That way the new bead bonds to the frame and the wall only. We are often asked to deal with leaking joints at the ends of sills and black, perished sealant on frames, across timber windows & doors, patio & French doors and window sills.
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.
All our work is covered by our 12-month guarantee, wherever you are in Edinburgh.
- Location
- Northfield (EH8, EH15, EH7)
- 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 happens on the day
We work through the job in order: protection first, then preparation, sealing and a tidy-up. For most jobs that takes most of a day for a typical house, less for a few frames and we leave things clean and tidy. Parking in city streets around Northfield can be tight or controlled, so it helps to know about permits or nearby bays. If you’re in a flat, let us know how we get in at the street door.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Preparing for the visit
- Clear items away from the joints we are working on
- Mention any leaks or damp you’ve noticed
- Keep pets and children clear of the area while we work
Ask for a quote
It all starts with a short chat. Tell us what’s wrong, where it is and how much there is, and we will explain how we’d tackle it. When it suits you, send an email to info@mrmastic.co.uk.
Advice
Why act early in Northfield
A cracked joint around a frame lets rain into the wall. Over time that can mean damp patches, damaged plaster and rotting timber. A reseal is a much smaller job. In a tenement flat in Northfield, a failed seal is rarely just your problem: a leak can come through the ceiling below, and gaps in shared walls or fire-rated joints matter to every flat.
Instead of a standard rate, we price the job in front of us: the amount of work, the old material and the access. You’ll know the price before we begin.
Why us?
- An ARBOMaster approved applicator
- Sealant colour chosen to suit
- Sanitary silicone with an anti-fungal additive in wet areas
- One-year guarantee on every job
Read what affects the cost and customer reviews.
Work for landlords, hotels and businesses
For anyone letting property in or around Northfield, several properties can go on one quote. Send us the addresses and the work at each, and pictures by email help.
We work for letting agents and landlords as well as homeowners. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
Common questions in Northfield
Does living near the coast affect window mastic in Northfield?
Near the sea, outside joints face more wind, rain and salt than they would inland, so preparation and the right sealant matter all the more. It’s worth checking the walls that face the sea first.
Do you work for landlords with property near Brunstane station?
Yes, landlords and agents are among the people we work for. Just drop us a line at info@mrmastic.co.uk with the address and what needs doing, and we will give you a clear price.
How do I get a quote for window mastic in Northfield?
Size, access and the old material all affect the cost. Call for a quick quote and we’ll talk you through it.
Can resealing stop a draught around my window?
In many cases. The gap between frame and wall is a common source of draughts, and resealing inside and out closes it.
Where is Mr Mastic based?
Our base is in Crawley, and we cover South East England, London and all of Scotland.
Does someone need to be in?
We need access to the joints, so we will agree that with you when we book. For inside work, that normally means someone being in.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures.
What should I tell you?
Just the basics: the address or postcode, what’s wrong and any access issues. After that, simply email us at info@mrmastic.co.uk.
What we are called out for in Northfield
Water runs down the glass onto the sill, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
Signs it’s time to call us include:
- Gaps between the frame and the inside reveal
- Cracked or shrunken mastic around the frame
- White mastic on grey or black frames
- Rushed sealant from a window installation
If you live in an older home near Willowbrae Parish Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint.
What your quote should include
- What the quote includes, VAT included or not
- How long to leave it before use
- Who does the work, and how experienced they are
- What insurance they hold
What the job involves on each surface
Composite doors
Front doors take the weather head on. Those corners get the most care.
Aluminium frames
Aluminium needs a sealant that bonds to coated metal. Neutral-cure sealant is the safe choice.
Nearby places to Northfield
Also in Northfield
Aftercare tips
To keep the joints looking good and working properly:
- Avoid blasting the frames with a pressure washer
- Make sure the drainage slots aren’t blocked
- Clean frames with a soft cloth and soapy water
- Air rooms to keep condensation down around windows
Silicone can’t generally be painted, so if you are planning to paint the frames or walls, tell us beforehand. There are paintable sealants for joints that need it.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so it pays to reseal before that happens.
What window mastic looks like in Northfield
Northfield is within about 2 miles of the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. The Old and New Towns of Edinburgh 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.
Rented homes near Brunstane station change hands often, and renewing tired window mastic between tenants heads off draught and damp complaints. Schools such as Portobello High School are buildings too, and its window and door frames need their mastic kept sound, just like a home’s.
Northfield is about 3 miles east of Edinburgh, in Edinburgh. For window mastic in and around Northfield, please email us at info@mrmastic.co.uk for a quick quote. We’re based in Crawley and cover Edinburgh. Our Edinburgh coverage runs to 175 places, Northfield among them.
We cover every part of EH8, EH15 and EH7 for window mastic and the streets around it. If you need window mastic at a property on Durham Avenue, Parker Avenue and Paisley Avenue or anywhere close by, we can help. With the A1 and A1140 close by, Northfield is easy for our applicators to reach. We also cover Mountcastle (1 mile north-east), Piershill (1 mile north-west), Willowbrae (1 mile west), Craigentinny (1 mile north) and South Portobello (1 mile east). Larger places within reach include Edinburgh (3 miles west), Leith (3 miles north-west), Silvermills (3 miles west), West End (3 miles west), Stockbridge (3 miles west) and North Leith (3 miles north-west).
Local landmarks in Northfield
Locally, jobs take us to homes and businesses close to Abercorn Park, Portobello Library and Public House. The nearest railway station is Brunstane station, about 1.4 miles east. Well-known places in the area include Craigmillar Castle (1.7 miles south) and Cameron Toll Shopping Centre (1.9 miles south-west). Not far away are The New Leaf Co-op and Whinny Hill.