Now that we are actually moved in (and since two more children will be here soon!), we realize that we need the space upstairs! So, we have started the process of finishing it ourselves and making a large playroom/homeschool area. This both saves money, and ensures that we use non-toxic products throughout!
We painted with Harmony Interior Acrylic Latex Paint (zero VOC formula) from Sherwin Williams. We used MB Global Quiet Walk as the underlayment and Kahrs Landobond Adhesive for gluing the wood pieces together (both non-toxic).
We decided to go with Lumber Liquidators for the flooring and get unfinished wood for about $1.69 a square foot. The comments on this flooring said to get 50% extra because there were so many major knots and dings, so we ordered the extra. We are so glad that we did! As you can see in the below picture, Bill was able to make a temporary table for his saw out of the spare pieces!
We'll be finishing with Rubio Monocoat sealant (clear) once it is finished, since that is also non-toxic and will strengthen the wood.
It's been a big job, but overall should only be about $3,000 for the 900 sqft space. The lowest quote that we could get to have it professionally done with non-toxic flooring was $8,000, so we have saved a bundle doing it ourselves! I'll post pictures when it is completed!