Underlayment Plywood

Coastal produces underlayment panels as defined in US Product Standard PS1-09 for Construction and Industrial Plywood.  Underlayment plywood is specially constructed for installation in flooring applications where puncture resistance is a requirement.  These panels are designed with thicker face veneer and/or limited voids in the ply beneath the face.  Our 19/32 and 23/32 Performance Category thicknesses are produced with Group 1 Southern Yellow Pine veneers and carry the “STURD-I-FLOOR” designation with the accompanying Span Ratings for single-layer floor construction.  The glue bond classification of our Underlayment is Exposure 1.

We offer 19/32 and 23/32 underlayment in both Square Edge and Tongue & Groove panels.  Our underlayment grades are also available in Structural-1 specifications and grademark.  Please contact the sales office for special orders.

Download Underlayment Plywood Spec Sheet

 

Production Item Performance Category #Plys Pcs/Unit Span Rating Construction Layup Notes
Underlayment 11/32
15/32
3
4
88
70
  C Plugged Face
D Back
D Inner plies
Our BC panels are approved for Underlayment
Underlayment
STURD-I-FLOOR
19/32
23/32
4
5
56
46
20oc
24oc
C Plugged face
C veneer under face
D Back
D inner plies
Available in square edge and T & G

Structural-1 is also available by special order


 


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