Two weekends of roof repair for Thiện, a school janitor in Hồ Chí Minh City

I'm a school janitor living in Hồ Chí Minh City. During the last storm water started coming through the ceiling in 2 places, and the bathroom is no longer usable. A roofer quoted $680, which isn't something I can pay. The good news: a local hardware store has donated the tiles and battens. What I don't have is people to do the work. I'm looking for anyone handy who can help over three weekday mornings. Experience helps, but it isn't essential - I'll have a licensed roofer supervising for safety. All you need is work boots and a hat. I'll provide lunch, water and lots of thanks. The work will be done on the ground and roof with proper harnesses. If you can only help for a few hours, that's welcome too. Thank you for reading my story.