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Curtains Too Long or Too Short – How to Fix the Length?

How to fix curtains – length, eyelets, blackout lining, hanging without drilling and more

At Kelly’s Blinds, we understand that even the most beautiful window treatments face wear and tear. Our London-based team offers professional solutions for floor-dragging fabric, broken hardware, or mounting on uPVC without drilling. This guide explains how to fix curtains to restore their former glory, ensuring a perfect, bespoke fit that handles the unique challenges of London homes.

How to fix curtains that are too long without sewing?

To fix curtains that are too long without picking up a needle, you should use high-quality hemming tape and a standard steam iron. This method allows you to adjust the drop of your fabric to avoid the “dust-trap” effect caused by excess material dragging across the floor. A curtain hem is the folded and finished edge of the fabric, usually located at the bottom, which provides the necessary weight for a graceful drape.

Before you begin any alterations, have you considered the fabric shrinkage rate? Most curtain materials can shrink by 3-5% during their first wash. As a trusted London craftsman, we always advise washing and drying your curtains before shortening them; otherwise, your perfectly measured hem may sit far too high after the next cleaning cycle.

How to use hemming tape for a seamless finish?

Hemming tape, often called “wonder web,” is a heat-activated adhesive that creates a crisp, professional edge without a single stitch. This method is ideal for quick repairs and DIY home improvements where sewing is not an option. To achieve a seamless finish, follow these simple steps:

  1. Measure the ideal clearance: aim for a clearance of 1-2cm above the floor or 5cm below the windowsill.
  2. Mark and fold: fold the fabric to your desired length, ensuring a recommended hem depth of 5-10cm for a weighted look.
  3. Apply the tape: place the tape inside the fold.
  4. Iron to seal: use steam to bond the fabric.

Expert warning: While hemming tape is excellent for lightweight fabrics, we have found it can struggle with the weight of heavy velvet or thick thermal-lined drapes. For those heavier materials, a professional bespoke made-to-measure curtain service remains the most durable option.

How to fix curtains with damaged eyelet rings and hardware?

You can fix curtains with failing hardware by replacing cracked plastic components with high-quality metal rings that match your pole diameter. Eyelet rings are specialized reinforcements, typically made of metal or plastic, that support the holes through which the curtain rod passes. In modern London apartments, plastic rings often seize or crack due to prolonged UV exposure from large, sun-facing windows.

If an eyelet has popped out or the fabric is fraying around the hole, it’s time for a repair. When choosing replacements, we recommend metal rings over cheap plastic alternatives to ensure long-term functionality. The following comparison highlights why professional installers prefer metal hardware:

Feature Plastic rings Metal rings
Durability Often crack due to UV exposure Better durability
Movement Can seize over time Smoother movement

Eyelet diameter comparison table

To ensure your curtains glide effortlessly, match your eyelet size to your curtain pole diameter. Choosing the correct size prevents snagging and ensures the fabric hangs correctly across the entire width of the window. Use the following guide to find the perfect fit for your hardware:

Eyelet diameter (inner) Recommended pole diameter Best use case
35mm Up to 28mm Lightweight fabrics and narrow windows
40mm Up to 32mm Standard weight curtains (most common)
50mm Up to 40mm Heavy velvet or thermal-lined curtains
63mm Up to 50mm Large-scale architectural windows

How to fix curtains for better light control and blackout performance?

Improving your light control usually requires inspecting the thermal lining for tears or upgrading the installation to eliminate light “leaks” around the edges. Thermal lining is an additional layer of opaque fabric attached to the back of a curtain to improve insulation and block light. Statistics show that 40% of blackout curtains fail to provide total darkness, often due to poor installation or lining degradation.

If your curtains are letting in light, check the reverse side. This additional layer not only blocks light but also significantly improves energy efficiency—a crucial factor for draughty Victorian terraces. If the lining is torn, it can often be patched with blackout repair tape, but for the best results, consider upgrading to high-quality blackout curtains that feature integrated light-blocking technology.

How to fix curtains to uPVC windows without drilling?

You can fix curtains to uPVC frames using tension rods or specialized no-drill brackets that clip directly onto the window sash. These solutions are essential for Londoners in rental properties where drilling into frames risks voiding the manufacturer’s warranty or violating tenancy agreements. When using these methods, keep the uPVC weight capacity in mind; most frames can safely support between 5-8kg per suspension point.

  • Tension rods: these fit inside the window recess and use spring pressure.
  • No-drill brackets: specialized clips that hook over the top of the sash.
  • Command hooks: these should be reserved for very lightweight decorative voiles only.

Hanging net curtains on uPVC frames

Net curtains remain a staple for street-level London homes, providing privacy without sacrificing natural light. To fix net curtains to uPVC without damage, use lightweight tension wires or small adhesive “end hooks.” These are designed specifically for low-weight nets and won’t put undue stress on the window seals.

How to fix curtains with gaps and alignment issues?

To fix curtains that don’t meet in the middle, you must adjust the tension on the heading cords or increase the fabric’s “fullness.” This is often a problem with pencil pleat headings where the cords haven’t been pulled evenly.

Ensure your curtains are at least double the width of the window to provide enough overlap. If a gap persists, a professional “trick of the trade” is to sew small, hidden magnets into the leading edges of the fabric. This ensures the curtains “snap” together when closed, providing a perfect seal against the morning sun.

If you are unsure about the best way to dress your windows, you can book a free in-home measurement with our local experts today to ensure a perfect, gap-free fit. 

Customer service
Marek Sztyma
Consult a Specialist

Unsure which blinds are the perfect fit for your space? Consult a specialist to receive expert advice, tailored recommendations, and personalized solutions that meet your style and functional needs, including roof blinds for unique spaces and more.

FAQ about how to fix curtains

 

How do I fix a gap between curtains that won’t meet in the middle?

Gaps usually occur due to insufficient fabric width or improper dressing of the pleats. You can fix this by adjusting the tension on the pencil pleat cords or using small, hidden magnetic closures. For a permanent solution, ensure your curtains are at least double the width of your window.

Can I hang curtains on uPVC windows without damaging the frame?

Yes, you can use tension rods or specialized no-drill brackets that clip onto the window frame. These solutions are safe as long as the total weight of the curtains does not exceed the 5-8kg limit typical for uPVC suspension points.

What is the best way to fix eyelet rings that have come off?

If an eyelet has pulled through the fabric, you may need to reinforce the area with a small patch of stiff interfacing before snapping a new ring into place. Ensure the replacement matches your rod diameter, with 40mm being the most common size.

How do I fix curtains that have shrunk after washing?

If your curtains are now too short, you can let down the bottom hem to gain an extra 5-10cm. If more length is needed, consider adding a decorative border of contrasting fabric at the bottom, which creates a bespoke look while solving the length issue.

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