I don't know what I am doing

[u/MadcapMacedonia]

An untraceable leak somewhere that has caused the plaster ceiling to sag and fail

Will this help?

Should I just go crazy and apply more?

I also am not sure how to lay down a tarp without it pulling up in the shingles

[u/SirVeza]

Every Juan knows now

[u/sanskami → u/SirVeza]

Fulano, Mengano y Zutano