NMFC 35480: Floor Underlayment Compounds | Class 60

Note 35482: NOTE-Applies only on compounds, mixed or not mixed, used for leveling of floors prior to application of floor coverings.

To find the correct freight class for your shipment:

1. Declare NMFC 35480 at tender and note Class 60; this item ships by weight, so record accurate gross weights per pallet and list bag/box/pail counts.
2. For bagged powders, use moisture barriers and tight stretch wrap; add corner boards and tier sheets to prevent split bags during compression at cross-docks.
3. For pails or drums of liquid/latex underlayment, keep upright, secure lids/bungs, and use UN-rated containers if your SDS indicates. Add “This Side Up” and “Hazmat” labels as required.
4. Reference Note, item 35482 in paperwork if applicable, attach the SDS, and arrange jobsite services (liftgate, appointment, limited access) to avoid re-delivery and handling damage.

Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.

• Single, predictable Class 60 minimizes rating disputes and speeds quoting for construction supply distributors and flooring contractors.
• Weight-based rating removes density calculations, reducing admin time and errors when mixing bags, boxes, pails, and drums on the same pallet.
• Proper hazmat documentation and packaging improve carrier acceptance, lowering spill cleanup risks and potential surcharge exposure.
• Packaging to the jobsite use-case (sturdy boxes or sealed pails) reduces damage, shortens install timelines, and curbs costly reconsignments.