Roll the fabric up and reattach the legs before you put the awning back onto the rv.
How to fix awning fabric.
The combination of water and heat that awnings are exposed to can create fertile ground for mold growth.
When you take on fabric awning repair and reinforcing the seams you should use a cross or saddle stitch.
These are adequate stitches but not the strongest.
The longer answer is that you need to get quality repair tape for awnings and apply it properly.
There are two options depending on your budget.
Torn fabric as your awning ages it becomes more susceptible to wind damage if left open during a storm.
The absolute best option is made by eternabond.
Follow the same procedure as for rips in the fabric body cutting your repair fabric long enough and wide enough to extend beyond the rip.
Unlace the awning far enough that you can lift up the corner.
Unroll the spring with a vise grip slide the spring out of the roller tube and roll the old fabric off of it.
In general canvas awnings can be reinforced with tape and or sewn while vinyl awnings can be repaired with vinyl cement.
Most canvas patio awnings are laced on with awning line.
This is strong enough to patch roofs on rvs or campers and does marvelous on awnings for all fabric types.
The insidious growth of mold is one of the biggest enemies of a fabric awning.
You can fix and repair small tears using adhesives made specially for this purpose.
Insert the new awning into the channels on the roller tube and slide it all the way down to install it.