I much prefer 3/4" aggregate for serious structural scoria bag.
Because we did not get an exterior coating on before winter, we tarped the building, and mice chewed all over the place to find shelter.
Nick Kitchener wrote:Just a heads up...
I grew up in a volcanic field and as a youth, I spent a lot of hours moving scoria for drainage etc.
The stuff is a nightmare to shovel unless it's in teeny weeny pieces.
Just like Paul recommends pounding tires for an hour with a sledge hammer before embarking on an earth ship, I recommend you spend an hour filling earth bags with scoria before embarking on a full scale project.
T Phillips wrote:We have had zero problems with mice since the final covering was applied. We are enormously pleased with the thermal performance of the building and it's ability to weather our local micro-burst winds. (The insurance company gave us enough money to pay for a well after the horse shed in that spot blew down. We knew that for that location we wanted a structure with an integrated roof.)
The scoria we ordered was 3/4" and it was like shoveling Fruity Pebbles after the gravel for the first two rows. The 15" x 25" bags weighed about 25-30 lbs. each with 6 #10 can scoops of scoria inside and stapled shut. They finished at about 12" wide. (Some bags were larger and some smaller.) I was a 57 yo couch potato who became the primary builder. My lower back hurt for 2 weeks, then was fine. I lost 10 lbs. in two months despite eating like a horse, working 4-6 hours/day. Most satisfying work I've ever done.