Edinburgh · Scotland
Window Mastic in Polwarth
Window mastic for Polwarth, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Hard, cracked sealant around windows
- Draughty joints inside around the window
- White mastic on grey or black frames
About our window mastic in Polwarth
Most frames have an outside joint and an inside one. 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 timber windows & doors, uPVC windows and window sills, and common reasons people get in touch are black, perished sealant on frames and white mastic on grey or black frames.
Scotland’s cities are full of stone-built tenements and terraces, in sandstone or granite. Natural stone around older windows needs a sealant that won’t mark or attack it, so acetoxy silicones, which can attack some stone, are best avoided.
Every job comes with a 12-month guarantee.
- Location
- Polwarth (EH11, EH14, EH10)
- Wider area
- Edinburgh
- Guarantee
- A year, on every job
- Quotes
- A clear price before work begins
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
For landlords and businesses
From a single let to a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Letting agents and landlords in Polwarth can book us as well as householders. Resealing between tenancies is a simple way to keep a property in good order.
Frames and glazing around Polwarth
Polwarth is within about 3 miles of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is 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, and the Georgian New Town is known for its sash windows. For listed homes and conservation areas, check with the council before changing how windows or walls look.
In the older streets around Polwarth Parish Church and Hall, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Managing a site like Craiglockhart Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Slateford station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Polwarth is about 1 mile south-west of Edinburgh, in Edinburgh. Whether you are in the middle of Polwarth or further out, window mastic is available for homes and businesses alike. Polwarth is one of 175 towns and villages in Edinburgh we cover.
All of EH11, EH14 and EH10 is covered for window mastic, from the main roads to the quietest streets. We cover properties on Cowan Road, Spylaw Road and Ettrick Road. If you are just outside Polwarth, we cover Shandon (1 mile north), Gorgie (1 mile north-west), Slateford (1 mile west), Westfield (1 mile north-west) and Burghmuirhead (1 mile east). Further out, we also cover Leith (4 miles north-east), Bonnington (3 miles north-east), Gayfield (3 miles north-east), Pilrig (3 miles north-east), North Leith (4 miles north-east) and Queensferry (8 miles north-west).
What’s near Polwarth
We work in homes and buildings around Harrison Park, Boroughmuir High School and Gabrielle Keiller Library, among other places. Nearby too are The Athletic Arms (0.6 miles north) and Iain Tomlin School of Music (0.6 miles east). The nearest railway station is Slateford station, about 0.7 miles south-west. Nearby you will also find Murrayfield Experience (0.9 miles north-west) and Waverley Mall (2.1 miles north-east). For a walk, there’s Dunsapie Loch and Craiglockhart Hill.
DIY versus a professional finish
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is.
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
What sealant work can’t fix
Honest advice matters more to us than a booking, so here’s what sealant cannot fix:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Draughts through the window seals rather than the frame
- A frame that has rotted at the joint
Not sure which it is? You can send an email to info@mrmastic.co.uk and we will tell you honestly.
Where we work in Polwarth
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Aluminium frames
- Composite doors
- Window sills
How to look after the new joints
How long the joints last depends on use and care. We suggest:
- Don’t paint over the silicone
- Keep jet washers away from the mastic
- Air rooms to keep condensation down around windows
- Wash the frames with mild soapy water
Clean the frames with mild soapy water, and avoid solvent cleaners on the sealant.
Draughts get worse, not better. As old mastic keeps shrinking, the gap widens, and a cold room gets colder. A new joint closes it up.
Common questions in Polwarth
How is work on the outside of a tenement in Polwarth normally arranged?
Most tenements arrange shared repairs through the owners or a property factor. The Tenements (Scotland) Act 2004 covers the common parts where the deeds do not, and we can quote for the factor or the owners directly.
I let a flat near Slateford station. Can you help?
Yes, rental work is part of what we do. Just send an email to info@mrmastic.co.uk and tell us about the property, and we will give you a clear quote.
Where are you based?
Our base is in Crawley, West Sussex, and we cover South East England, London and all of Scotland.
Can new sealant go over the old?
No. Fresh sealant doesn’t stick to old sealant, and anything trapped underneath, including mould and water, stays there. It all has to come out first.
Do you guarantee window mastic?
Yes. All our work carries a 12-month guarantee, and we’re ARBOMaster approved applicators.
How long before the joint can be used?
That depends on the sealant used, so please follow the time we give you when we finish.
What does window mastic cost?
Size, access and the old material all affect the cost. Ask us for a quote and we’ll talk you through it.
Can you match the sealant to my frames?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames generally suit brown.
Why deal with it now?
Choosing the product is half the job. Decorators’ caulk and bathroom silicone are not designed for outside joints that move. A low-modulus exterior sealant keeps its stretch through hot and cold weather. Private landlords in Polwarth 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.
Instead of a standard rate, we price the job in front of us: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
Why book with us
- A sealant colour to suit the surroundings
- We never seal over old sealant
- Quality sealants from Arbo and Everbuild
- More than 20 years in sealant work
Take a look at what affects the cost or our reviews.
What the job involves on each surface
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match suits the frame.
Window sills
Where a sill meets brick or render, the ends often crack first. A tight seal at each end keeps rain out of the wall.
What we do, step by step
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and clear up. It generally takes most of a day for a typical house, less for a few frames. Parking in city streets around Polwarth can be tight or controlled, so it helps to know about permits or nearby bays. For flats, mention the door entry system and any shared-stair arrangements.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Preparing for the visit
- Tell us about any water getting in
- Mention any parking rules near the property
- Where the joints are inside, avoid wetting them before we arrive
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will talk you through what we’d do. Whenever you are ready, email us at info@mrmastic.co.uk.