"Cass" wisely wrote

Are you really committed to growing a rose with 20 foot canes that will
require you to climb up a ladder to deadhead, prune and attach to the
house?

You know, winter-hardy, repeat-blooming, red OGR climbers to more than
16 ft. aren't that easy to come by. Most roses of that size are most
often found in mild weather regions or are once-blooming. Paul Scarlet
Climber....doesn't really look like an OGR.

You might be better off with a modern-day imposter, i.e. a more modern
roses with an old-rose look.

Good luck in your quest. I'll be interested to see what others come up
with.

I must agree with Cass; zone 7 is not quite up there to encourage what
warmth does: growing, growing, growing. If what you are looking for is
to have your rose climb up all the way to the roof of your porch, I don't
know what I could recommend in the OG varieties to fit the bill.

Zephirine Drouhin is not red, in reasonably warm climate she can some
times shoot for the moon - providing the moon stays within 10 feet -
has very few prickles and is a gorgeous rose that also happens to be
a powdery mildew magnet. She goes about her business for about
3 to 4 years before handing anything remotely close to a bloom. But,
when she does you suddenly forget all about the cons and can only
think of the pros. Great fragrance, but more magenta than even pink.

As Cass has suggested, a modern climber is perhaps what you are
looking for. Kordes came out somewhere in the 60s with Sympathie,
a dark red climber that in Portland Oregon could reach about 10 feet.
Nice, soft fragrance, good repeat, nice form and other than a bit of
mildew problem in wet Springs, held her own quite well. But never
got higher than 10 feet, at least not here. Well fed, great for cutting
good foliage, but 10 feet.

Cadenza is another that can reach 15 feet under optimum conditions
and I guess optimum means mild winters, one of the best Armstrong
roses to come out also in the 60s. I don't remember if it had any
fragrance and I don't have my books here at the office, but I remember
a dark red, double bloom that was very attractive and I believe it
repeats. Have no idea if it will work for you in your area tho.

But these are all modern roses. As Cass said, you must realize that
for a climber to reach its full potential it must meet extreme and very
defined conditions. And for remontants deadheading is not optional.
I wouldn't climb up any ladder to deadhead a rose no matter how
much I love her. There are certain things that are naturally opposed:
drinking and driving and ladders and deadheading, particularly if
bees love your rose as much as you do.

I am sorry I cannot be of more help. We grow almost exclusively
ogr, and yet I am at a loss to give you any suggestion that I think
it could help. But maybe going to www.helpmefind.com and search
for what you are looking for may bring more and better answers than
this one. Whatever you do, please consider the idea of having to
climb up a ladder to deadhead and/or prune your climber.
Good luck and I hope you find what you are looking for, or a
reasonable and lovely substitute.

Allegra