Roofing for drinking water collection?

Posted by SMB-1988@reddit | preppers | View on Reddit | 12 comments

I'm building a roof for my chicken's fenced area. Repurposing old plywood to keep this a minimal cost project. I have a water barrel that I'd like to fill with run-off from this roof for collecting rainwater. I'm wondering if there's a type of paint I can use to protect the wood and keep it safe for drinking/gardening? Shingles aren't ideal for drinking water, and metal roofing is way out of my budget currently. I thought about a tarp but I'd like it to look nicer if possible. Any advice? I'm currently thinking I'll do a tarp until I can spring for metal roofing but I'd like something more permanent from the get-go if possible.