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Summary of Design Elements / UL listings of Hacker Floor Underlayments

UL Design No. Hacker Floor Underlayment Thickness No. of Hours SoundMat (optional) Subfloor Joists Resilient or Furring Channels Gypsum Board Batts & Blankets
G565 1" 2 X Steel Deck - Min 9/16" deep, 22 MSG galv corrugated fluted steel deck Channel-shaped, 9 1/4" min depth. Min No.16 MSG galv steel. Max 24" OC X (2)5/8" 3-1/2" thick
J917 1/2 - 1" 2 X Precast Concrete        
J919 3/4" 2-4 X Precast Concrete        
J920 3/4" 2-3 X Precast Concrete        
J924 1/2 - 3/4" 2-4 X Precast Concrete        
J927 3/4" 2 X Precast Concrete        
J931 1/2" 2-3 X Precast Concrete        
J957 1/2" 2-3 X Precast Concrete        
J966 1/2 - 3/4" 2-4 X Precast Concrete        
J991 1/2 - 1" 1-4 X Precast Concrete        
J994 1/2 - 1" 1-4 X Precast Concrete        
K906 3/4" 2 X Precast Concrete        
L001 1" 1 X 1x6" T&G or
15/32" plywood
2x10", 16"oc      
L004 1" 1 X 1x6" T&G or
15/32" plywood
2x10", 16"oc      
L005 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
2x10", 16"oc      
L006 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
2x10", 16"oc      
L201 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
2x10", 16"oc      
L202 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc      
L206 1" 1 X 15/32" plywood wood structural panels Nom. 2x10" wood joists, 16"oc   1/2"  
L208 1" 1-1/2 X 1x6" T&G or
1/2" plywood wood structural panels
3x8", 16" oc      
L209 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc      
L210 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc      
L211 1" 2 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc      
L212 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc      
L501 3/4" 1 X 19/32" wood structural panels Nom. 2x10" wood joists, 16"oc   5/8"  
UL Design No. Hacker Floor Underlayment Thickness No. of Hours SoundMat (optional) Subfloor Joists Resilient or Furring Channels Gypsum Board Batts & Blankets
L502 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc   1/2"  
L503 1" 1 X 1x6" T&G or
15/32" plywood or
7/16" OSB wood structural panels
Nom. 2x10" wood joists, 16"oc   1/2"  
L504 3/4" 1   5/8" structural interior with
exterior glue, C-D Grade
Douglas fir plywood
Stringers 12"oc of 1200-psi graded lumber measuring
1-11/16 by 5-1/4" or greater
  1/2"  
L505 3/4" or
1"
2 X 19/32" wood structural panels
15/32" wood structural panels
Nom. 2x10" wood joists, 16"oc   (2) 5/8"  
L506 1" 3/4 X 1x6" T&G or
1/2" wood structural panel
Nom. 2x10" wood joists, 16"oc   1/2"  
L507 1" 1 X 2x4" blocking under side joints Nom. 2x10" wood joists, 16"oc   1/2"  
L508 3/4" 1   Nom 1-1/8" thick wood
structural panels, min grade
"Underlayment"
4x10" or (2) 2x10"
wood joists, 12"oc
X 5/8" Optional
L509 1" 1/2* X 1x6" T&G or
1/2" wood structural panel
Nom. 2x10" wood joists, 16"oc   1/2"  
L510 3/4" 1.5*   1x6" T&G Nom. 2x10" wood joists, 16"oc X (2)1/2"  
L511 3/4" or
1"
2 X 19/32" wood structural panels
15/32" wood structural panels
Nom. 2x10" wood joists, 16"oc   (2) 5/8"  
L512 3/4" 1 X 19/32" wood structural panels Nom. 2x10" wood joists, 16"oc   1/2" or 5/8"  
L513 3/4" 1 X 3/4" wood structural panels Nom. 2x10" wood joists, 16"oc   5/8"  
L514 3/4" 1 X 19/32" wood structural panels Nom. 2x10" wood joists, 16"oc   1/2" or 5/8"  
L515 1" 1 X 1x6" T&G or
15/32" plywood
Nom. 2x10" wood joists, 16"oc X 1/2"  
L516 3/4" 1   1x6" T&G or 15/32" plywood
7/16" OSB wood structural panels
Nom. 2x10" wood joists, 16"oc X 5/8" Optional
L517 3/4" 1   1x6" T&G Norm. 2x10" wood joists, 16"oc   1/2"  
L518 3/4" 1 X 19/32" wood structural panels TRUS JOIST or TJI X (2) 1/2"  
L519 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc   1/2"  
L520 3/4" 3/4*   4'x8'x5/8" thick plywood Norm. 2x10" wood joists, 16"oc X 5/8" 3" thick
L521 3/4" 1   23/32" wood structural panels Parrallel chord truss, 24"oc X 5/8" Optional
L522 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc   1/2"  
L523 1" 1 X 5/8" plywood wood structural panels Nom. 2x10" wood joists, 16"oc Optional 5/8"  
*Gypsum Board not Type X (Fire rated)
UL Design No. Hacker Floor Underlayment Thickness No. of Hours SoundMat (optional) Subfloor Joists Resilient or Furring Channels Gypsum Board Batts & Blankets
L524 3/4" 1 X 19/32" wood structural panels Steel joists with 7" min. depth, 24"oc   (2) 5/8"  
L525 1" 1 X 1x6" T&G or
15/32" plywood wood structural panels
Nom. 2x10" wood joists, 16"oc   1/2" or 5/8"  
L526 1" 1 X 1x6" T&G or
15/32" plywood or
7/16" OSB wood structural panels
Nom. 2x10" wood joists, 16"oc   5/8"  
L527 3/4" 1.5*   3/4" thick plywood, min grade "Underlayment" Steel joists with 9-3/8" min. depth, 24"oc X (2)5/8"  
L528 3/4" 1 X 23/32" wood structural panels Parrallel chord truss, 24"oc X 5/8"  
L529 3/4" 1 X 23/32" wood structural panels Parrallel chord truss, 24"oc   5/8"  
L530 3/4" 1 X 3/4" plywood TRUS JOIST or TJI X 1/2" or 5/8" 1-1/4" thick
L531   1 X 23/32" wood structural panels Min. 9" deep "I" shaped wood joists, max. 24oc X 1/2" or 5/8" 1" thick
L532 3/4" 1.5*   19x32" wood structural panels Nom. 2x10" wood joists, 16"oc X 5/8" 3-1/2" thick
L533 3/4" 1   4'x8'x5/8" thick wood structural panels Nom. 2x10" wood joists, 16"oc X 5/8" Optional
L534 3/4" 1 X 23/32" plywood wood structural panels Parrallel chord truss, 24"oc X 5/8"  
L535 3/4" 1 X 19/32" wood structural panels Nom. 2x10" wood joists, 16"oc X 1/2" or 5/8"  
L536 1" 2 X   Nom. 2x10" wood joists, 16"oc   (2) 5/8"  
L537 3/4" 1 X 5/8" plywood Nom. 2x10" wood joists, 16"oc   1/2" or 5/8"  
L538 3/4" 2   1x6" T&G or 15/32" plywood or
7/16" OSB
TJI/H60,TJI/H60P,TJI/H90,
TJI/H90P,TJI/H90X,
TJI/L45P,TJI/L60,TJI/L90,
TJI/L90P,TJI/Pro(Tm)25P,
TJI/Pro(Tm)35P,
TJI/Pro(Tm)120TS,
TJI/Pro(Tm)150,
TJI/Pro(Tm)150TS,
TJI/Pro(Tm)250,
TJI/Pro(Tm)350,
TJI/Pro(Tm)350P,
TJI/Pro(Tm)550,
TJI/Pro(Tm)550P
X (3)5/8"  
L539 3/4" 1   1x6" T&G or 15/32" plywood Nom. 2x10" wood joists, 24"oc   5/8" Optional
L540 3/4" 1   1x6" T&G or 15/32" plywood Nom. 2x8" wood joists, 16"oc   5/8" Optional
L541 1" 2 X 15/32" or 19/32" plywood structural panels Nom. 2x10" wood joists, 16"oc X 5/8" 3" thick
L542 1" 1 X 23/32" T&G wood structural panels Parrallel chord truss, 24"oc   (2) 1/2"  
L543 3/4" 1   Nom 23/32" wood structural
panels, min grade
"Underlayment"
Cee-shaped sections, min 8"
deep, 1-9/16" flanges & 9/16"
lips.
  (2) 1/2"  
UL Design No. Hacker Floor Underlayment Thickness No. of Hours SoundMat (optional) Subfloor Joists Resilient or Furring Channels Gypsum Board Batts & Blankets
L544 1" 1 X 23/32" wood structural panels Min. 8" deep "I" shaped wood joists, max. 24oc X (2) 1/2"  
L545 3/4" 1   3/4" wood structural panels Nom. 2x10" wood joists, 16"oc X 5/8" Optional
L546 3/4" 1   15/32" wood structural panels Parallel chord truss, 24"oc with
nom 2x4 lumber. Min. truss depth
18"
X 5/8" Optional
L547 3/4" 1.5*   4'x8'x5/8" plywood Type TJI/Pro 150, TJI/Pro 250,
TJI/Pro 350, TJI/Pro 550
X (2)1/2" Optional
L548 3/4" 1 X 7/8" T&G wood structural
panels, min grade
"Underlayment"
11-3/8" deep, 16 gauge steel
floor truss, max 24"oc
X (2)5/8" Optional
L549 3/4" 1 X 23/32" wood structural panels Pre-fab light gauge steel truss, max 48oc X (2) 5/8" Optional
L550 3/4" 1 X 23/32" T&G plywood Parrallel chord truss, 24"oc X 5/8" Optional
L551 3/4" 1 X 23/32" wood structural panels Pre-fab light gauge steel truss, max 48oc X 5/8" Optional
L552 3/4" 1 X 23/32" T&G plywood Pre-fab light gauge steel truss, max 48oc X 5/8" Optional
L553 3/4" 1 X 23/32" wood structural panels Pre-fab light gauge steel truss, max 48oc X 5/8" Optional
L555 3/4" 1   23/32" T&G plywood Min. 11-7/8" pre-fab wood trusses, 24"oc X 1/2" Optional
L556 1" 2 X 23/32" wood structural panels Min. 8" deep "I" shaped wood joists, max. 24oc or
Nom. 2x10" wood joists, 16"oc
X (4) 5/8"  
L557 3/4" 1   1/2" or 15/32" plywood Nom. 2x10" wood joists, 16"oc   5/8"  
L558 3/4" 1   23/32" wood structural panels Parrallel chord truss, 24"oc X 5/8" X
L559 3/4" 1 X 23/32" wood structural panels Pre-fab light gauge steel truss, max 48oc X 5/8" Optional
L560 3/4" 1 X 23/32" wood structural panels Pre-fab light gauge steel truss, max 48oc X 5/8" Optional
L562 3/4" 1   23/32" T&G plywood Parrallel chord truss, 24"oc X 5/8" Optional
L563 3/4" 1 X 23/32" T&G wood structural panels Parallel chord truss, 24" oc with nom 2x4 lumber. Min. truss depth 18" X 5/8" Optional
L571 3/4" 1 X T&G wood structural panels Min. 9-1/4" deep "l" shaped wood joists, max 24" oc X 5/8" Optional
L585 3/4" 1 X 23/32" T&G wood structural panels Parallel chord truss, 24" oc with nom 2x4 lumber. Min. truss depth 18" X 5/8" Optional
L598 3/4" 1 X 5/8" plywood wood structural panels 2 by 10 in., spaced 16 in. OC X 5/8" 3-1/2" thick


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