Folding-up windows depend on their top hinges and gas struts (or friction arms) for safe daily operation, so regular maintenance of these components is especially important alongside general frame and glass care. Because the sash is constantly working against gravity every time it’s raised and lowered, the moving parts on a folding up window experience a more consistent mechanical load than those on many other window styles, which makes a consistent maintenance routine particularly worthwhile.
Why Regular Maintenance Matters
Folding-up windows contain several moving components, including the top hinge, locking systems, and gas-assisted or friction-based lifting mechanisms. These parts are exposed to daily use, the constant load of lifting and lowering the sash, and environmental conditions such as rain, dust, UV rays, and airborne debris.
Routine maintenance helps you:
- Ensure smooth, even lifting and lowering
- Extend the lifespan of gas struts, arms, and hardware
- Maintain weather resistance around the seal
- Preserve the powder-coated frame finish
- Improve energy efficiency
- Reduce unnecessary wear on the hinge line
- Prevent the sash from drifting shut or failing to hold its position
- Protect your investment in a window that carries load-bearing components
Spending just a few minutes on regular maintenance can significantly improve the long-term performance and safety of your window.
Cleaning the Glass
For routine cleaning:
- Remove loose dust using a soft microfiber cloth
- Clean the glass with warm water and a mild glass cleaner
- Wipe using a lint-free cloth or squeegee
- Dry the surface to prevent streaks and water spots
Avoid using abrasive pads, steel wool, razor blades, solvent-based cleaners, or harsh chemicals, as these products may scratch the glass or damage surrounding seals.
Cleaning the Aluminum Frame
Most folding up windows features powder-coated aluminum frames that require minimal maintenance. To clean the frame:
- Wash with warm water and mild detergent
- Use a soft sponge or microfiber cloth
- Rinse thoroughly with clean water
- Dry with a soft towel
Avoid abrasive cleaning products, bleach, acid-based cleaners, strong solvents, and pressure washers directed at seals, hinges, or struts. Regular cleaning helps maintain the finish and prevents the buildup of dirt and contaminants around the moving parts.
Inspect and Maintain the Gas Struts or Friction Arms
Gas struts and friction arms are responsible for supporting the window sash in the open position and ensuring smooth, controlled operation as it lifts and lowers.
Inspect them every few months for:
- Signs of corrosion
- Oil leakage, particularly around the strut seals
- Loose mounting brackets
- Reduced lifting performance or a sash that feels heavier than usual
- Physical damage or bending
- Uneven load sharing between multiple struts on wider sashes
Do not attempt to disassemble or modify the struts or arms yourself. If the window no longer stays open, requires excessive force to lift, or drops suddenly instead of lowering smoothly, have a qualified professional inspect the struts immediately. Because a failing strut can create a serious safety risk, replace any worn or damaged components as soon as possible.
Lubricate the Hinge and Moving Parts
Smooth operation depends on properly maintained hardware. Apply a silicone-based lubricant to:
- The top hinge
- Pivot points
- Locking mechanisms
- Handle mechanisms
Lubrication schedule: every six months under normal residential use, or every three months in coastal or high-use commercial environments. Avoid oil-based lubricants or heavy grease, as they attract dust and debris and can gum up the hinge over time.
Inspect Locks and Handles
Handles and locking mechanisms should be checked regularly to ensure safe and secure operation. Inspect for loose screws, stiff handles, difficulty locking, excessive wear, and damaged components. If necessary, tighten fasteners carefully and lubricate the locking mechanism. Any damaged hardware should be replaced promptly to maintain both security and weather resistance.
Check Weather Seals
Weather seals help protect against rain, wind, dust, noise, and heat loss. Inspect the seals for cracks, splits, compression loss, loose sections, and signs of ageing. Damaged seals should be replaced to maintain the window’s weather resistance and energy efficiency, and to prevent water tracking back toward the hinge mechanism.
Keep Drainage Channels Clear
Most folding up windows include drainage channels at the base of the frame designed to direct water away. Inspect these channels regularly and remove leaves, dirt, dust, insects, and construction debris. Blocked drainage holes may allow water to collect around the frame and sill, potentially affecting long-term performance.
Seasonal Maintenance
Spring: Wash the glass and frame, remove winter debris, inspect the struts or arms, and lubricate the hinge and moving hardware.
Summer: Remove dust and pollen regularly, check that the sash still lifts and lowers smoothly, and clean more frequently if the window is used daily.
Autumn: Remove leaves from drainage channels, inspect weather seals, and clean the frame before colder weather sets in.
Winter: Remove moisture from the hinge and strut area, check seals for effective insulation, avoid forcing a frozen or stiff sash, and inspect the hinge and strut mounting brackets after heavy storms.
Protect the Powder-Coated Finish
Powder-coated aluminum finishes are highly durable but still benefit from regular care. Wash regularly using mild detergent, remove bird droppings promptly, avoid impact from tools or outdoor furniture near the frame, protect the frame during renovation work, and rinse away salt deposits in coastal environments.
Common Issues and Simple Solutions
Sash feels heavy to lift: Possible causes include worn struts, a dry hinge, or lack of lubrication. Solution: inspect the hardware, lubricate moving parts, and arrange strut replacement if necessary.
Sash won’t stay open: Possible causes include strut wear or damaged mounting brackets. Solution: arrange professional inspection and replacement of the struts.
Sash drops suddenly rather than lowering smoothly: This indicates strut failure and should be treated as a safety issue. Stop using the window and arrange immediate professional inspection.
Lock feels stiff: Possible causes include dirt inside the mechanism or lack of lubrication. Solution: apply silicone-based lubricant and operate the lock several times.
Water around the frame or sill: Possible causes include blocked drainage holes or damaged weather seals. Solution: clean drainage channels and replace damaged seals where necessary.
Recommended Maintenance Schedule
| Task | Frequency |
|---|---|
| Clean glass | Monthly or as needed |
| Clean aluminum frame | Every 2–3 months |
| Inspect gas struts/arms | Every 6 months |
| Lubricate hinge and locks | Every 6 months |
| Check weather seals | Every 6 months |
| Clean drainage holes | Quarterly |
| Inspect handles and hardware | Every 6 months |
| Professional inspection | Every 2–3 years |
Maintaining this schedule helps maximize reliability and extend the lifespan of your folding up window.
Tips to Extend the Life of Your Folding Up Window
- Open and close the sash gently, avoiding sudden or forceful movements
- Avoid placing excessive weight on the open sash
- Never use the open sash as a shelf or support
- Keep drainage channels clear
- Lubricate hinge and strut hardware regularly
- Clean the frame and glass routinely
- In addition, inspect the struts for signs of wear before they fail completely
- Furthermore, address small issues early to prevent them from becoming major repairs
Frequently Asked Questions
How often should gas struts be checked?
Every six months, or sooner if the sash feels heavier to lift or doesn’t hold its position reliably.
Can I lubricate the struts themselves?
No — lubricate the hinge and hardware only; struts are sealed units and shouldn’t be opened, oiled, or modified.
How long do folding up windows last?
With regular maintenance and professional strut inspection, high-quality units can perform reliably for decades.
Is it normal for the struts to feel different in cold weather?
Yes, gas struts can feel slightly stiffer in cold conditions, but a significant change in performance should still be checked by a professional.
What should I do if the sash won’t close evenly?
This can indicate a hinge, strut, or frame alignment issue and should be inspected before the window is used again, as an uneven closure often points to a developing mechanical problem.
