go to a reputable high end floor coverings retailer and discuss this with them. Especially ones that specialize in wovens and sewing. as long as there is a lengthwise pattern match in the runner, almmost any runner pattern can be made to line up but this can requires alot of angle cutting, seaming/sewing and pattern dropping because of the stair angles and radius'es, which end up consuming exponentially more runner material, and the larger the pattern match the more material is consumed to line up the patterns, because of waste factor in making the patterns line up. Expect alot of seaming or sewing. Expect to pay top dollar ... probably more than what you figure as top dollar. Most people specializing in this type of work will want or require you to purchase their materials. It's all custom work.

Deb, I am so glad you saw the pic. I attached a site where I have more pics. (I don't want to post pics here because I think people are sick of them. I am very needy I think.) I don't think the installer thought I was weird that I had a pic. I did my research! Thanks again! Hi squirrelheaven, Mine is a wool loop pile? (I just googled it.) I wanted something that would be very durable and a low pile because of the hounds. My dog Buddy is so relieved that I got carpet on there. He fell a few times and was nervous each time he came down the stairs. We did a few victory laps tonight. prairiegirlz, turquoise? I think we will need some pics, please. It is called california roll (vs waterfall.) I don't think I went bold. It is pretty close to the stair stain. lol. As far as the cost, I don't mind. The serging of the sides was $125 and the installation was $165. I can't remember the cost of the carpet but it wasn't inexpensive. I needed a 12 by 6 piece. I want to say $600? Anyway, I tried to find a remnant but didn't have any luck. Which is good because I really like what I picked out. Thank you! Here is a link that might be useful: FR

Were it mine, I'd consider having the one single railing on the right side, and on the left side I'd have either the existing two segments of railing or remove the upper section along the wall as no longer needed. Re the left newel post being too tall, I think the installer needs to verify that the railing height is adequate. The railing appears too low to me. I am not sure you understand the complexity of the installation nor the costs involved. I am of above average handyman skills, but I would never tackle a project such as this. Likely costs are in the thousands.

If your stairs do not curve the Shaw carpet should layout fine. I don't know if you are going wall to wall. If you are using this as a runner on stairs as you stated, you will serge the edges and they will come in about 3" on each side from wall exposing the wood of the stairs on each side. There will be the serge lines on each side that will create a frame for runner. Serging is when the carpeting is cut and then the ground color thread is used to wrap the unfinished edges.