Absorber Ceiling Joist 2006/06/18
click on each picture to zoom in
Parts:
- two bags of Roxul Safe N Sound 16.25" x 48" x 3". ($30.97 each, 12 per bag)
- two bags of Owens Corning unfaced R13 14.75" x 47" x 3.5" ($27.47 each, 12 per bag)
- two bags of Mountain Mist Quality Quilt Batting (Polyester) 90" x 108" x 0.25"
- 0.5" staples for staple gun
| Product |
thickness |
density |
125hz |
250hz |
500hz |
1000hz |
2000hz |
4000hz |
NRC |
| Safe‘n’Sound |
3" (75mm) |
2.5 pcf (40 kg/m3) |
0.52 |
0.96 |
1.18 |
1.07 |
1.05 |
1.05 |
1.05 |
| R11 (not R13) |
3.5" |
|
0.34 |
0.85 |
1.09 |
0.97 |
0.97 |
1.12 |
0.95 |
I made a bit of a mistake on the Roxul Safe N Sound. I went looking for 16" centers and that's what I got. Unfortunately it was for steel studs, so it was a bit wide, but it seems to stay up there very well. Probably a bit more dust landed on the floor pushing it up there though.
I always wear this sort of thing when working with fiberglass.
The open joists
Cover up equipment
The insulation.
The first package of Roxul is up.
A few the other side of the i-beam too
The first package of Owens Corning is up.
Second packages of both are up
Whole ceiling
The other side of the i-beam
This side of i-beam
I used the cross braces as a starting point for the insulation
edge of neighbour wall untreated
stapled up the polyester to keep the fiberglass fibers off the floor. Cut out around electrical (fire). There's no polyester above the fluorescent light, but the fluorescent is touching the pink fiberglass. The fluorescent is cool except above the balast which is quite warm. I'm considering lowering the fluorescent by an inch.
The open joists
Cover up equipment
The insulation.
The first package of Roxul is up.
A few the other side of the i-beam too
The first package of Owens Corning is up.
Second packages of both are up
Whole ceiling
The other side of the i-beam
This side of i-beam
I used the cross braces as a starting point for the insulation
edge of neighbour wall untreated
stapled up the polyester to keep the fiberglass fibers off the floor. Cut out around electrical (fire). There's no polyester above the fluorescent light, but the fluorescent is touching the pink fiberglass. The fluorescent is cool except above the balast which is quite warm. I'm considering lowering the fluorescent by an inch.