Bear Creek Dome Cotton & Wool Insulation
 |
 |
 |
 |
 |
 |
 |
 |
 |
Wed. 3:30pm — Just received the recycled “blue jean” insulation – looks like very interesting stuff.
Thurs. The pictures below show us trying to cut the Ultra Touch recycled denim insulation.
Knife – doesn’t work Hand tearing – rough edges and hard to tear
Saws all – doesn’t work Skill saw – doesn’t work well
7″ Skill saw doesn’t cut thru 51/2″ thick insulation Saw guard fills up with fibers
Uneven edges are a problem getting a tight fit to eliminate air infiltration.
We thought a brand new electric knife would be the answer – it’s not. It hardly cut thru at all.
The batt is so rigid that it doesn’t conform to any irregularities in the panel. We’ll experiment more tomorrow.
Framing the inside stud wall, creating an 11 1/4″ thick wall that will be fully insulated with a R value of 39. The window opening has been framed on all 4 sides with 3/4″ plywood for ease of finishing.
We received the lambs wool insulation and we’re trying to figure out how to make this work as wall/roof insulation.
Fri. — Here is our final “in triangle” test for the recycled denim insulation. Because we do not divide our dome triangles into 16″ or 24″ o.c. spaces, these batts do not have any support. Without support, the batts “sag” and will not work in our open triangles. The extra cost for this insulation and the tremendous extra amount of framing that would be required to create supports at 16″ or 24″ on center requires us to reject these denim batts as a viable dome shell insulation. However, it will work very well in the riser walls which are rectangular and have studs at 16″/24″ o.c.
|
|
|
|
