Plywood Floor Underlayment: Multiply Floor Underlayment (Birch): Product Guide

Using Multiply Floor Underlayment with Major Vinyl Brands

Multiply floor underlayment has been specifically designed for use under all types of vinyl floors. Multiply's warranty applies to all installations on Armstrong, Mannington, Congoleum, and Domco/Tarkett floors when both Multiply installation instructions and the vinyl manufacturer's instructions have been followed. Each major manufacturer has its own individual recommendations regarding the selection of floor underlayments. Multiply floor underlayment meet the requirements of all these vinyl manufacturers. The following information provides a summary of each of the major vinyl manufacturer's requirements and indicates how Multiply floor underlayment meets those requirements.

Flooring Manufacturer Requirements					Multiply Floor Underlayment
	Armstrong	Congoleum	Domco/Tarkett	Mannington	Specifications	Meets Requirments
Wood Type	Poplar or Birch Plywood B-C 2, 3	APA underlayment	Plywood	APA Underlayment	Baltic Birch 5 and 7 ply plywood	yes
Thickness	Minimum of 1/4	Minimum of 1/4	Minimum of 1/4 for residential; 3/8 for commercial	Minimum of 1/4	Baltic Birch 5 and 7 ply plywood	yes
Glue	Exterior grade	Exterior grade Classification	Exposure Durability Classification		Baltic Birch 5 and 7 ply plywood	yes
Face	Fully sanded	"B" face that has been filled and sanded	Plugged and fully sanded	Smooth, fully sanded	Solid wood plugged and fully sanded	yes
Back	Smooth enough so that texture not visible through vinyl	"C" back that has been filled and sanded	Sanded	Maintain uniform density porosity, and thickness	Solid core	yes
Core	Resist dents and punctures	Plugged crossbands under core	Plugged	Resist static and impact indentation	Ultrasonically tested for voids	yes
Stains	Free of staining inks, dyes, paints and other substances			Free of staining contaminants	Available with and without nail pattern	yes
Warranty			Recommends a warranty	Have written warranty	Multiply Lifetime Warranty	yes