# Can a Sukkah have all-glass walls?

Would a Sukkah that has walls that are completely transparent be kosher for use?

-
Why should they not? – Shmuel Brin Oct 11 '11 at 16:22
@shmuel would you live in a transparent house? – yydl Oct 11 '11 at 16:54
Assuming I don't do anything private there, why not? – Shmuel Brin Oct 11 '11 at 17:02
@ShmuelBrill It's a question. I doubt it would be so obvious to most people... – yydl Oct 11 '11 at 17:04
If the transparent walls are silica based, stones would become muktza throughout the entire sukkos ;) – YDK Oct 11 '11 at 17:16

Yes. The gemara in the beginning of Sukkah discusses different factors that would invalidate a sukkah, but transparency isn't an issue. You can also make the walls with 4 horizontal strings, each within 3 tefachim from the other one. Though if it was completely transparent, i.e. invisible, perhaps there would be an issue that no one could tell they're in a sukkah.

-
How could you make a lavud wall out of only 3 strings? – Double AA Sep 30 '12 at 3:49
@DoubleAA, use strings each of which is at least 1/3 of a tefach wide, and then measure very carefully. – Ze'ev Felsen Sep 25 '13 at 1:53
@Zeev By that logic I can even make one out of one string that is 7 tefach wide. – Double AA Sep 25 '13 at 1:54
@Ze'evFelsen (Can you confirm if `@Zeev` pung you?) – Double AA Sep 25 '13 at 9:01
@DoubleAA, edited to 4. – Ariel K Sep 25 '13 at 11:39

Rabbi Yoshia (Sukka 7b) claims that walls must also provide shade and therefore may not be constructed from transparent material.

But I think you can decorate the walls enough to guarantee enough shade for comfort or lay plastic sheets like tarp. Since I am a female, I am not a posek, but just suggesting my idea to help solve the problem of a sukkah with transparent walls.

-
Hello Harsimrat Kaur and welcome to Mi.Yodeya! Thank you for your sourced answer. Are you sure the shade referred to couldn't be the kind that glass provides? – WAF Apr 25 '14 at 2:21
I don't understand the purpose of the phrase "Since I am a female, I am not a posek" in this answer. – Shmuel Apr 25 '14 at 8:57

In Maseches Suka daf dalet amud beis (copied below), Rava rejects Abaye's proposal for an platform without walls because there is a requirement that they be "ניכר". Therefore there may be a basis for transparent walls being invalid. היתה גבוהה מעשרים אמה ובנה בה עמוד שהוא גבוה עשרה טפחים ויש בו הכשר סוכה סבר אביי למימר גוד אסיק מחיצתא א"ל רבא בעינן מחיצות הניכרות וליכא

-
Ely, welcome to Mi Yodeya, and thanks very much for finding this interesting source! You could make your answer even more valuable by adding a translation of the gemara passage you quote. Please consider registering your account, which will give you access to more of the site's features. – Isaac Moses Jun 25 '13 at 14:25