Q. (Re question 2874 above). Does it make a difference if the roll was attached to the wall of the house or the suka?
A. Rema (O.H. 626: 3) writes that roof panels that are attached to the roof with hinges, can be closed or opened during Yom Tov, to protect the suka when it rains, as no ohel creating or removing prohibition is involved.
39 Melochos (p. 1077) writes; ‘A tarp-shlock that is built into the Sukkah (or the house to which it is connected) is considered an accessory to the structure, and may be opened and closed without the requirement to leave a Tefach of the tarp remaining unrolled.’ On note 140a, he adds that any kind of attachment would be equal to hinges.
Horav Shlomo Miller’s Shlit’a opinion is to be stringent and a tefach besides the thickness of the roll in necessary to remain open as mentioned in the question above.
Rabbi A. Bartfeld as advised by Horav Shlomo and Horav Aharon Miller Shlit’a