Quote Originally Posted by Reakt20 View Post
Thanks for the info! I have a question: What are people's opinions on the rolls of construction grade rosin paper (either red or brown) that they sell at hardware stores, which is used to cover flooring and countertops on construction sites? I've read some places that they are fine, but I have also noticed that some are made with a type of formaldehyde, which can't be good. Any thoughts?
No formaldehyde is not good, often this type of paper contains insecticides and fungicides as well. There are many sources of substrates out there that are free of chemicals many for close to the same price.

Currently I am using coco coir I really like it although it is messy.