Thermal Curtains for Large Windows: Planning Panels and Tracks

A large window front brings plenty of daylight into the room. Once a dense thermal curtain is added, though, different questions come up than for a small window: how many panels make sense? Can the track carry the fabric weight? And where does the curtain go when it is open? Planning before you buy makes the window front easier to use every day.

Look at the window front and the ways through first

Don't just measure the panes – measure the whole area the curtain should cover. A step-by-step guide is in measuring a thermal curtain. If the window front includes a patio door, handle and passage must stay accessible. Also note on which side the panels can gather when open without covering furniture, sockets or radiators.

Match panels and fabric fullness

On wide windows, two or more panels are often easier to move than one very heavy piece of fabric. Check whether the stated product width applies per panel or per set. The fabric also needs extra width for its folds. How much depends on the heading and the drape you want; go by the specific product details.

Where two panels meet in the middle, a small overlap prevents an open light gap. Extra width at the sides can cover the edges of the window. Both belong in the total width.

Check track, load capacity and operation

A multi-layer or quilted thermal curtain can be much heavier than a light sheer. Track, rod, gliders and fixings must together suit the actual load. Follow the manufacturer's information and consider the surface. Long tracks need enough fixing points; the exact number depends on the system and the wall or ceiling.

Walk through the fabric's daily path in your head: can each panel slide without catching on door handles or furniture? Is there enough room for the folds to gather at the side? For very wide fronts, splitting into sections you can operate independently can be practical.

Control warmth and daylight day to day

Close the curtain where you want light control or a more comfortable feel by the window. Open it when you want daylight or to air the room. A dense curtain complements the window, but replaces neither an intact seal nor proper building insulation. Avoid covering radiators and vents permanently.

Checklist before ordering

• Measure the whole window front and the overlaps you want
• Check the number, individual width and fullness of the panels
• Check the load capacity of track, gliders and fixings
• Plan space for open panels and passages
• Keep radiators and ventilation paths clear

For large window fronts, a made-to-measure curtain is usually worth it: all models are in made-to-measure thermal curtains. Many of our made-to-measure curtains are available in widths up to 400 cm.

When panels, hanging system and operation fit together, even a large window front stays comfortable to use with a heavy thermal curtain.