Phase 4 Results

 

Part 4A - Photo Scavenger Hunt

Plywood sheathing

1. Does the panel have wood filler or veneer plugs?  rarely
2. Sized for spacing?  yes and no
3. Plies and layers?  5 and 5

OSB sheathing or Sturd-I-Floor

1. Sized for spacing?  yes and no
2. Discernable layers?  yes and no  (yes in T&G panels?)
3. How does the price compare to plywood sheathing of similar thickness?  ≈ 80%

Hardwood plywood

1. What is the stated species?  birch, maple, oak
2. How does the price compare to plywood sheathing of similar thickness?  ≈ 140 to 200%
3. How does the appearance compare to plywood sheathing?  sanded, rarely knots
4. Does it have a grade stamp?  yes and no

Wood siding.

1. How does the price compare to plywood sheathing of similar thickness?  ≈ 130%
2. Does it have a grade stamp? You do NOT have to photograph the grade stamp.  yes and no

Underlayment

1. How does the price compare to plywood sheathing of similar thickness?  ≈ 50 to 100%
2. Does it have a grade stamp? You do NOT have to photograph the grade stamp.  no

Particle board

1. How does the price compare to plywood sheathing of similar thickness?  ≈ 50 to 100%
2. Does it have a grade stamp? You do NOT have to photograph the grade stamp.  yes and no

 

General Comments

• stated and actual thickness often differs
• particle board is heavy
• stamps are hard to read

 

 

Part 4B - Panel Selection for Sheathing Loads

Roof

• 24/0 plywood panel
  • 3/8 in. thick
  • strong direction
  • no edge support

Floor

• 24/0 plywood panel
  • 3/8 in. thick
  • strong direction
  • no edge support
• 32/16 OSB panel
  • 15/32 in. thick
  • strong direction
  • no edge support