Early Quenya
túpo
noun. roof, cover, lid
tel
noun. roof
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A word appearing as ᴱQ. tūpo “roof, cover, lid” in the Qenya Lexicon of the 1910s, derived from the early root ᴱ√TUPU having to do with things covered (QL/95).
Neo-Quenya: Since √TUP “cover over” survives in Tolkien’s later writings, I would retain the noun ᴺQ. túpo for purposes of Neo-Quenya, but only for the senses “cover, lid”. For “roof” I would use telumë or [ᴹQ.] tópa.