sdkitchen,

Country Curtains has a few styles that are available for wider windows. I purchased the 3" Weaver's Tab Curtains for some sliders that were very good looking.

Here is a link that might be useful: CC Weaver's 3

This doesn't exactly answer your questions, but I would hope that your house and windows would be insulated well enough that you wouldn't need drapes to keep the heat in and the cold out.

You can get the JCPenney Supreme Drapes ready made in widths up to 150 inches wide for a pair (75 inches per panel). You can also get made-to-measure up to 177 inches per panel.

To answer your question, yes, many years ago, I placed multiple drapery panels on a traverse rod, and you could not see the division between them. Now, with decorative rods and clips and rings, it's a bit trickier to pull off.

JC Penney has pinch pleated drapes for wide windows. I have two windows that are as wide as yours will be and I got pinch pleated sheers for those windows. I think they might go up as wide as 120". I don't need them drawn for privacy because of where they're located but just need sun protection.

You'll probably want lined drapes for privacy, maybe even thermal lined if you're looking for insulation from cold.

You could certainly join ready made panels together. Just take out the side seams on the panels you're joining together, space the pleats out to the right distance from each other, then seam the two panels together. I've made many pairs of drapes and for wide windows it's necessary to seam lengths of fabric together to get the right width, so what you'd be doing is no different than would be done anyhow even by a custom fabricator.

On lined curtains, if you don't want the inside of the seam visible from the backside, you'll have to first seam the lining with the seam facing the inside, then seam the main fabric with the seam facing inside. There's a seam there on the outside, but with all the folds in the drapes you don't really notice it.

Hope this makes sense.

Thanks for the responses - graywings, that's exactly what I was wondering, and randita I appreciate the instructions. I was hoping to be able to just hang them with clip rings and maybe a whipstitch, but I will seam them if I must for them to look ok.
I had looked at the Supreme, but Penney's has other styles/colors I like better - but not in the wide width.

We have two sets of french doors in our Gentlemen's Parlor. I ordered eight-fifty by ninty six inch panels and hung them planning on shortening and sewing them together at a later date. It was just before Christmas and I didn't have the time to get to them then. Having done that I know I'd never ever do that on a permanent basis. No mater how I tried you could tell they were two separate panels on each side. I would have just made my own, but these were on clearance at JCP for less than what fabric alone would have cost. It just didn't look nice at all hung in panels.

I recently ripped the one of the side hems on each panel and the casings out, deciding instead of cutting off and re-hemming them I wanted the casing to be exagerated so they'd gather gracefully over the rod. Once they were all sewn it looked so much better. The picture below was taken before I steamed them, so please forgive the wrinkles. We'll be painting the walls next weekend in a color to blend with the panels.
{{!gwi}}