Best Sash Window Pulleys for Restoration: 2025 Expert Review
DR Joinery
Expert Joiner & Restoration Specialist
There is nothing quite as satisfying as a heavy Victorian sash window that glides effortlessly on its weights. Conversely, there is nothing more frustrating than a window that jams, squeals, or requires brute force to lift. The difference often lies in a small, overlooked component: the axle pulley.
Working on period properties across York, from the grand townhouses inside the walls to the terraces of South Bank, I often find original pulleys painted shut or rusted solid. Whilst we always try to salvage original ironmongery, sometimes the metal fatigue or wear is simply too great, and replacement is the only viable option to restore function.
In this review, I have selected three essential products contributing to the smooth running of a sash window. I have included a reliable budget pulley for utility sashes, a premium brass option for heritage restoration, and the crucial waxed cord that solves the problem of snapping lines.
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Specs vs. The Real World
The Spec: "Nylon vs Brass Wheels"
"Nylon wheels are purely a cost-saving measure suitable only for cheap windows."
Whilst brass is authentic for restoration, modern nylon wheels are actually quieter and self-lubricating. They are excellent for painted frames where the pulley isn't a decorative feature.
The Spec: "Load Bearing"
"Any pulley can handle a standard sash window."
Cheap, thin-gauge pulleys can buckle under the weight of heavy double-glazed sashes or hardwood frames. Always match the pulley rating to your sash weight.
My Top 3 Recommendations
Three options to cover different needs and budgets
Carlisle Brass AQ91 SASH Window AXLE Pulley NO 1 GALV FOREND with Nylon Wheel
Carlisle Brass
This represents excellent value for money for non-listed properties or painted frames. The galvanised forend offers decent rust resistance suitable for our damp climate, and the nylon wheel ensures silent running without the need for constant oiling.
The Good
- Very affordable replacement for rental repairs
- Nylon wheel is quieter than metal-on-metal
- Galvanised finish resists corrosion inside damp box frames
The Bad
- Not suitable for Grade II listed restoration where aesthetics matter
- Nylon can wear faster than brass under extreme heavy loads
Installer Tip:
When installing these, be very careful not to get oil-based paint on the nylon wheel. Unlike brass, the paint bonds to the plastic and creates a bumpy, jerky motion when you open the window.
Priced at £3.20 at the time of writing
Check Price on AmazonCarlisle Brass AQ93 Sash Window Axle Pulley Square Forfend with Brass Wheel (Pack of 2)
Carlisle Brass
For a proper Victorian or Georgian restoration, these are the industry standard. The solid brass construction not only looks magnificent against polished timber or a crisp white gloss, but it also has the structural integrity to handle heavy lead-weighted sashes found in larger properties.
The Good
- Authentic appearance for period properties
- Solid brass wheel handles heavy loads without deformation
- Square forend is easier to chisel out by hand than radius ends
The Bad
- Significantly more expensive than steel/nylon options
- Requires occasional lubrication to stop squeaking
Installer Tip:
Brass screws are soft and snap easily, especially in old, seasoned Oak frames. Always pilot drill your holes and perhaps run a steel screw in first to cut the thread, before fitting the final brass screws by hand.
Priced at £16.00 at the time of writing
Check Price on AmazonMerriway BH03162 Waxed Cotton Sash Window Pulley Cord, 12.5M
Merriway
Even the best pulley is useless with a bad cord. I've categorised this as 'problem-solving' because 90% of the 'pulley' issues I'm called to fix are actually snapped or stretched cords. This waxed cotton cord is vital; the wax provides weatherproofing and lubrication, allowing it to run smoothly over the pulley wheel without fraying.
The Good
- Wax coating reduces friction and extends lifespan
- Traditional cotton core stretches less than cheap nylon braids
- Correct diameter (4.8mm) for most standard pulleys
The Bad
- Can be stiff to knot initially due to the heavy waxing
- Cream colour might show dirt if handled with greasy hands
Installer Tip:
Don't just cut it to length immediately. Tie a weight to the cord and hang it up in your workshop overnight before installing. This 'pre-stretching' prevents the sash weights from hitting the bottom of the box a week after you've finished the job.
Priced at £5.81 at the time of writing
Check Price on AmazonFrequently Asked Questions
How do I know if my sash pulleys need replacing?
Can I replace a pulley without taking the window out?
Should I choose nylon or brass pulleys?
What size sash cord do I need?
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